# Tangerine Snow F1 Fast Grow Report (Outdoor) 2024-09-12 ## Overview Tangerine Snow F1 Fast proved to be an exceptional strain from start to finish. This report focuses on the outdoor grow experience, as the indoor plant was harvested earlier and has its own separate harvest report. ## Strain Characteristics - **Ease of Growth:** Very easy to grow - **Structure:** Excellent, with a super structure - **Appearance:** Nice, glittery colas - **Bud Structure:** Open, very sativa-like - **Aroma:** Delicious scents ## Growth Performance - **Adaptability:** Mastered various obstacles throughout the growing season - **Weather Resilience:** - Thrived during a cold and wet early season - Adapted well to extreme heat and sun in early August - **Pest Resistance:** Easily withstood dogs, cats, birds, and insects ## Challenges The only significant drawback was its susceptibility to mold, which necessitated an earlier harvest of the outdoor plant. ## Growing Conditions - **Location:** Outdoor (with comparison to indoor grow) - **Season:** Experienced variable weather conditions ## Future Plans - Definite plans to grow again, both indoors and outdoors - Considered a "keeper" strain ## Additional Notes - The indoor plant's harvest report is available separately and recommended for review - The current plant is being revegetated: 1. Initially grown indoors 2. Harvested 3. Revegetated outdoors 4. Recently moved back indoors 5. Already showing promising bud development in its new indoor environment ## Conclusion Despite the mold issue, Tangerine Snow F1 Fast is highly recommended for its ease of growth, attractive structure, and overall performance in various conditions.

After 14 days drying, 7 days hanging and another 7 days on cardboard boxes 📦 at a temp between 61 and 65 degrees F and a humidity between 52-55 % I trimmed all the buds and jar them with Boveda 62. After 2 days in jars ( 16 days from cutting the plant down) I weighed in everything. I got 434g of grade A buds and 685g of Grade B ( perfectly smokable ) buds plus a lot of trim that I didn’t weight. I’m very pleased with everything and I enjoyed every single step along the way. Probably next time I will lollipop/defoliate more aggressively so I can get more top bud and less grade b bud.

14/7/26 day 43 of flowering,beginning week 7. second video-20 days old clone,roots forming in process,was taken bud(21 days flowering). 🌱 The clone was cut and planted directly into the soil, previously watered with Terra Vega and under a transparent dome with 18 hours of light.this method means manyfolding from one bud and ideally for scrog/LST technique.

Topped and transplanted into larger pots and removed a couple of large fan leafs to allow light to reach lower arms, I also chopped the lowest branches and have kept as clones for another setup.

she's growing super fast and getting amazing look i ever seen 😍😍😍 Smells delicious and already started tricom development😍😍

APRIL 18TH 2024 - The 3rd batch of clones was taken yesterday and mother plants stripped back aggressively now that focus will be going toward the beds and clones. The generation 2 mom's are going to be vegged up and ready to produce our second harvest's set of clones. We have taken 3 batches of clones kept them in half gallon bags in each of the beds so we can pick the absolute best of each to transplant into the beds & proceed into the grow with. Next update will be of each individual diary! We got @Seedsman Purple Ghost Candy in this cycle by splitting the Exotic Animal bed half Purple Ghost Candy ! On the Kitty cat front, Barns finally got the courage to approach us over a few days, Maybe a week. We where finally able to pick her up and bring her inside, She has been a happy new member of the family ever since, Making that another successful rescue animal adopted from outside. FOLLOW US ON X for EXCLUSIVE UPDATES : https://twitter.com/LegacyMrketFarm MAKE SURE TO CHECK OUT OUR YOUTUBE CHANNEL FOR IN DEPTH TUTORIALS : https://www.youtube.com/@LegacyMarketFarm SUBSCRIBE TO OUR GAMING CHANNEL TO JOIN OUR AWESOME COMMUNITY & GAME WITH US : https://www.youtube.com/@LegacyRadioGaming AND MOST IMPORTANTLY DON'T FORGET TO TAKE ADVANTAGE OF OUR PROMO CODES FOR EACH OF OUR GREAT SPONSORS ! PROMO CODE GREEN PLANET : LEGACY PROMO CODE MARS HYDRO : LEGACY PROMO CODE SEEDSMAN : LEGACY10

She is fattening up real nice. I made the mistake of not adding a filter and omg this girl smells loud asf. Skunky with a hint of sweet really cannot wait to harvest her. We are almost at that point. She get her last feed this week and then it’s off to flush. 4gs of full tilt per gallon at an ph of 6.0 to finish her off. Thank you all for watching you all are the real mvps thanks you.

12/25/2023-Germination Day 1 Merry X-mas 2023 I decided to start a run of SolFIre Gardens Hoodz Candyz S1. I am going to do a cup filled with RO water a touch of Hydrogen peroxide and let it sit for 24-48 hours until I see tap root then I am going to put it into a rapid rooter.. Tap root Down and put it about 1/4 of the say down the Rapid rooter. I made some modifications to my basket on this run.. I have taken a few Pods that I use for my cloning machine and decided that I am going to try and use them as sure plants, so that I can take my water right up to the bottom of the basket this time and see if these can make my planting more consistent.   12/26/2023-Germination Day 2 Tap root achieved Planting Commencing 12/27/2023-Germination Day 3 Misted the dome lightly misted the rapid rooter and added a little water to the bottom of the pan to encourage root growth to the pan. 12/28/2023-Germination Day 4 Ground Hogs day 12/29/2023- Germination Day 5 She is up, she has broken surface, I misted the root riot, and around the bottom of the tray to try and entice root growth down rapidly. 12/31/2023- Germination Day 6 Ground Hogs Day 1/1/2024-Germination Day 7 HAPPY NEW YEARS!!.. I did it I planned it out so my planting day would fall on New Years and it worked.. Yay!!! 1/2/2024- Germination Day 8 Since the roots are not to the water yet, I am pouring one cup of water lightly on the hydroton around the lady to try and encourage root growth down to the water.. 1/3/2024- Germination Day 9 Ground Hogs day, will continue until roots hit the water. 1/4/2024- Germination Day 10 Ground Hogs day, will continue until roots hit the water. I will just continue to top feed until roots are in the water.. Shouldn't be more than a few more days. 1/5/2024- Germination Day 11 Ground Hogs day, will continue until roots hit the water. I am going to change the water Sunday and kick off Week 1, I will just continue to top feed until roots are in the water.. Shouldn't be more than a few more days. 1/6/2024- Germination Day 12 Ground Hogs day, will continue until roots hit the water. I will just continue to top feed until roots are in the water.. Shouldn't be more than a few more days. 1/6/2024- Germination Day 13 Ground Hogs day, will continue until roots hit the water. 1/7/2024- Germination Day 14 Ground Hogs day, will continue until roots hit the water.

Venga familia que ya viene la cosecha, que ganas que tenia ya de darles machetazo. No veas que pinta que tienen estas plantas. No son grandes pero si están bien gordas. No soy de plantar autoflorecientes pero e de comentar que con este cultivo e hasta disfrutado. Pronto la cataremos 💨💨💨. Agrobeta: https://www.agrobeta.com/agrobetatiendaonline/36-abonos-canamo Mars hydro: Code discount: EL420 https://www.mars-hydro.com/ Hasta aquí es todo , espero que lo disfrutéis, buenos humos 💨💨.

TROPICANA COOKIES FF/ FASTBUDS WEEK #15 OVERALL WEEK #7 FLOWER This week was a good week no issues to report she's looking good buds are tight super dense and covered in trichomes additionally she's smelling great!! Thank you for stopping by and taking a look it's much appreciated!!! Thank you FASTBUDS!! TROPICANA COOKIES FF/ FASTBUDS

NOTES: I stopped using the root stimulator as I fill the tanks, next full nutrient solution change to mid-bloom phase is at around 3rd to 4th week flowering. I'll I stop using the Grow nutrient and will increase Bloom the same amount. A lot of training on upper parts with the net and some light defoliating on lower parts of the plants. Day57 (12.12.) Day58 (13.12.) Defoliated and pruned my plants a bit more. Removed some big fan leaves covering large areas of becoming bud sites but mostly focused on lower leaves growing inwards, blocking growth, airflow etc.. Added a video afterwards. Day59 (14.12.) Day60 (15.12.) I continued doing the same as before, light defoliation mostly under the canopy. Day61 (16.12.) Day62 (17.12.) Everything looks good and my teenagers are finally beginning to flower, also no signs of any males or hermaphodites so that's good. Filling the net and keeping the tops and bud sites at the same level is a lot of work since they've stretched a lot. They've also needed some pruning and defoliating but I've tried to not remove too much before they've finished growing bigger. After that, propably on 4th week of flowering I can decide better on what to remove and what to keep for the rest of the grow. Day63 (18.12.) I started the last heavier defoliation process which includes removing around 50% of the upper leaves blocking airflow and light to the developing bud sites. I'll continue the process propably a couple days so I don't stress them too much. It's pretty time-consuming to dive in to each plant and remove anything that's unneccessary for the rest of the grow, keeping that in mind I don't even have the time to do everything at once. This includes the bottom nodes and branches that aren't going to reach even close to the net, the leaves that are blocking the light on top, and the leaves at the bottom of the canopy that aren't getting basically any light. Thanks for the tips! 💪

Thriving in the indoor tent. Leaf and node growth all showing well. There is some lower growth in will need to cut but these auto girls are at least 10 days behind so no stress for them.

~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~ Woo-wee!! The kief on this strain is like nothing I've ever seen, we've grown an insane amount of different strains (easily 3x what we've documented) and this one wins🏆.. I've included pictures but none can do it justice, the trichomes are visible to the naked eye and just falling over each other.. the smoke is very smooth (the little bit that's dry), this despite no cure yet, it melts in the pipe....we made another batch of tincture (for me lol), 12fl oz with 1oz Bruce Banger bud, oven dried slow and then decarbed at normal temps.. 10ml of this tincture made my knees weak lol, its been great for sleep at night..that last part was surprising to me, when smoked it definitely has all sativa qualities but the tincture is like Nyquil (I could have over cooked it)...as always accurate weights are out of the question, we dry only our half here and the rest goes to other houses to dry once harvested but if I had to guess I'd say we got around roughly a half lb, maybe 7ozs..the dry box smells like Fruit Loops cereal with a little bit of diesel ⛽ 🍓, its really pleasant..I'm really glad we grabbed clones of this, we have roughly 10 plants, some will be passed to family but we'll definitely be flowering a bunch more for ourselves... thanks as always for dropping by and happy harvests everyone!! ❤️💡🌱😽💨 ~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~_~

Hello gromies Week 11 goes to the end tropicana No3 is ready for cut...tomorrow tropicana No2 (dont believe that fast buds delivered tropicana) seem to need longer both grows with different living soil types...explanation see week1 by the way I like a bit overripped!

DREAM SHERBERT AUTO / KANNABIA WEEK #11 OVERALL WEEK #6 FLOWER This week she's doing good nothing negative to report this week, she's got a nice aroma to her, buds are looking dense she's got nice structure to her. Stay Growing!! Thank you for stopping by and taking a look it's much appreciated!! Thank you KANNABIA 😊!! Kannabia.com DREAM SHERBERT AUTO

Things are rolling right along for the frost bangers.Showing some nice bud development and some stretch as I have the light intensity at 50 percent power.I feel like they are loving it so I’ll keep the intensity the same for now.

Week 20, week 10 of flower started 10/18 and the lights are now off until next run! I'll be cutting them down later tonight! So blessed to have gotten this far! I'm at a loss for words after that, happy growing everyone ✌️🍀✌️ Harvest update to follow........

D42 F6 One week of 12/12 and she's stretching out real nice. I'll start to feed them from week 7. I've defoliated the central cola to allow the sides to catch up.

ANTHOCYANIN production is primarily controlled by the Cryptochrome (CR1) Photoreceptor ( !! UV and Blue Spectrums are primary drivers in the production of the pigment that replaces chlorophyll, isn't that awesome! 1. Diverse photoreceptors in plants Many civilizations, including the sun god of ancient Egypt, thought that the blessings of sunlight were the source of life. In fact, the survival of all life, including humans, is supported by the photosynthesis of plants that capture solar energy. Plants that perform photosynthesis have no means of transportation except for some algae. Therefore, it is necessary to monitor various changes in the external environment and respond appropriately to the place to survive. Among various environmental information, light is especially important information for plants that perform photosynthesis. In the process of evolution, plants acquired phytochrome, which mainly receives light in the red light region, and multiple blue light receptors, including his hytropin and phototropin, in order to sense the light environment. .. In addition to these, an ultraviolet light receptor named UVR8 was recently discovered. The latest image of the molecular structure and function of these various plant photoreceptors (Fig. 1), focusing on phytochrome and phototropin. Figure 1 Ultraviolet-visible absorption spectra of phytochrome, cryptochrome, phototropin, and UVR8. The dashed line represents each bioactive absorption spectrum. 2. Phytochrome; red-far red photoreversible molecular switch What is phytochrome? Phytochrome is a photochromic photoreceptor, and has two absorption types, a red light absorption type Pr (absorption maximum wavelength of about 665 nm) and a far-red light absorption type Pfr (730 nm). Reversible light conversion between the two by red light and far-red light, respectively(Fig. 1A, solid line and broken line). In general, Pfr is the active form that causes a physiological response. With some exceptions, phytochrome can be said to function as a photoreversible molecular switch. The background of the discovery is as follows. There are some types of plants that require light for germination (light seed germination). From that study, it was found that germination was induced by red light, the effect was inhibited by subsequent far-red light irradiation, and this could be repeated, and the existence of photoreceptors that reversibly photoconvert was predicted. In 1959, its existence was confirmed by the absorption spectrum measurement of the yellow sprout tissue, and it was named phytochrome. Why does the plant have a sensor to distinguish between such red light and far-red light? There is no big difference between the red and far-red light regions in the open-field spectrum of sunlight, but the proportion of red light is greatly reduced due to the absorption of chloroplasts in the shade of plants. Similar changes in light quality occur in the evening sunlight. Plants perceive this difference in light quality as the ratio of Pr and Pfr, recognize the light environment, and respond to it. Subsequent studies have revealed that it is responsible for various photomorphogenic reactions such as photoperiodic flowering induction, shade repellent, and deyellowing (greening). Furthermore, with the introduction of the model plant Arabidopsis thaliana (At) and the development of molecular biological analysis methods, research has progressed dramatically, and his five types of phytochromes (phyA-E) are present in Arabidopsis thaliana. all right. With the progress of the genome project, Fi’s tochrome-like photoreceptors were found in cyanobacteria, a photosynthetic prokaryotes other than plants. Furthermore, in non-photosynthetic bacteria, a homologue molecule called bacteriophytochrome photoreceptor (BphP) was found in Pseudomonas aeruginosa (Pa) and radiation-resistant bacteria (Deinococcus radiodurans, Dr). Domain structure of phytochrome molecule Phytochrome molecule can be roughly divided into N-terminal side and C-terminal side region. PAS (Per / Arndt / Sim: blue), GAF (cGMP phosphodiesterase / adenylyl cyclase / FhlA: green), PHY (phyto-chrome: purple) 3 in the N-terminal region of plant phytochrome (Fig. 2A) There are two domains and an N-terminal extension region (NTE: dark blue), and phytochromobilin (PΦB), which is one of the ring-opening tetrapyrroles, is thioether-bonded to the system stored in GAF as a chromophore. ing. PAS is a domain involved in the interaction between signal transduction-related proteins, and PHY is a phytochrome-specific domain. There are two PASs and her histidine kinase-related (HKR) domain (red) in the C-terminal region, but the histidine essential for kinase activity is not conserved. 3. Phototropin; photosynthetic efficiency optimized blue light receptor What is phototropin? Charles Darwin, who is famous for his theory of evolution, wrote in his book “The power of move-ment in plants” published in 1882 that plants bend toward blue light. Approximately 100 years later, the protein nph1 (nonphoto-tropic hypocotyl 1) encoded by one of the causative genes of Arabidopsis mutants causing phototropic abnormalities was identified as a blue photoreceptor. Later, another isotype npl1 was found and renamed phototropin 1 (phot1) and 2 (phot2), respectively. In addition to phototropism, phototropin is damaged by chloroplast photolocalization (chloroplasts move through the epidermal cells of the leaves and gather on the cell surface under appropriate light intensity for photosynthesis. As a photoreceptor for reactions such as escaping to the side of cells under dangerous strong light) and stomata (reactions that open stomata to optimize the uptake of carbon dioxide, which is the rate-determining process of photosynthetic reactions). It became clear that it worked. In this way, phototropin can be said to be a blue light receptor responsible for optimizing photosynthetic efficiency. Domain structure and LOV photoreaction of phototropin molecule Phototropin molecule has two photoreceptive domains (LOV1 and LOV2) called LOV (Light-Oxygen-Voltage sensing) on the N-terminal side, and serine / on the C-terminal side. It is a protein kinase that forms threonine kinase (STK) (Fig. 4Aa) and whose activity is regulated by light. LOV is one molecule as a chromophore, he binds FMN (flavin mononucleotide) non-covalently. The LOV forms an α/βfold, and the FMN is located on a β-sheet consisting of five antiparallel β-strands (Fig. 4B). The FMN in the ground state LOV shows the absorption spectrum of a typical oxidized flavin protein with a triplet oscillation structure and an absorption maximum wavelength of 450 nm, and is called D450 (Fig. 1C and Fig. 4E). After being excited to the singlet excited state by blue light, the FMN shifts to the triplet excited state (L660t *) due to intersystem crossing, and then the C4 (Fig. 4C) of the isoaroxazine ring of the FMN is conserved in the vicinity. It forms a transient accretionary prism with the tain (red part in Fig. 4B Eα) (S390I). When this cysteine is replaced with alanine (C / A substitution), the addition reaction does not occur. The effect of adduct formation propagates to the protein moiety, causing kinase activation (S390II). After that, the formed cysteine-flavin adduct spontaneously dissociates and returns to the original D450 (Fig. 4E, dark regression reaction). Phototropin kinase activity control mechanism by LOV2 Why does phototropin have two LOVs? Atphot1 was found as a protein that is rapidly autophosphorylated when irradiated with blue light. The effect of the above C / A substitution on this self-phosphorylation reaction and phototropism was investigated, and LOV2 is the main photomolecular switch in both self-phosphorylation and phototropism. It turns out that it functions as. After that, from experiments using artificial substrates, STK has a constitutive activity, LOV2 functions as an inhibitory domain of this activity, and the inhibition is eliminated by photoreaction, while LOV1 is kinase light. It was shown to modify the photosensitivity of the activation reaction. In addition to this, LOV1 was found to act as a dimerization site from the crystal structure and his SAXS. What kind of molecular mechanism does LOV2 use to photoregulate kinase activity? The following two modules play important roles in this intramolecular signal transduction. Figure 4 (A) Domain structure of LOV photoreceptors. a: Phototropin b: Neochrome c: FKF1 family protein d: Aureochrome (B) Crystal structure of auto barley phot1 LOV2. (C) Structure of FMN isoaroxazine ring. (D) Schematic diagram of the functional domain and module of Arabidopsis thaliana phot1. L, A’α, and Jα represent linker, A’α helix, and Jα helix, respectively. (E) LOV photoreaction. (F) Molecular structure model (mesh) of the LOV2-STK sample (black line) containing A’α of phot2 obtained based on SAXS under dark (top) and under bright (bottom). The yellow, red, and green space-filled models represent the crystal structures of LOV2-Jα, protein kinase A N-lobe, and C-robe, respectively, and black represents FMN. See the text for details. 1) Jα. LOV2 C of oat phot1-to α immediately after the terminus Rix (Jα) is present (Fig. 4D), which interacts with the β-sheet (Fig. 4B) that forms the FMN-bound scaffold of LOV2 in the dark, but unfolds and dissociates from the β-sheet with photoreaction. It was shown by NMR that it does. According to the crystal structure of LOV2-Jα, this Jα is located on the back surface of the β sheet and mainly has a hydrophobic interaction. The formation of S390II causes twisting of the isoaroxazine ring and protonation of N5 (Fig. 4C). As a result, the glutamine side chain present on his Iβ strand (Fig. 4B) in the β-sheet rotates to form a hydrogen bond with this protonated N5. Jα interacts with this his Iβ strand, and these changes are thought to cause the unfold-ing of Jα and dissociation from the β-sheet described above. Experiments such as amino acid substitution of Iβ strands revealed that kinases exhibit constitutive activity when this interaction is eliminated, and that Jα plays an important role in photoactivation of kinases. 2) A’α / Aβ gap. Recently, several results have been reported showing the involvement of amino acids near the A’α helix (Fig. 4D) located upstream of the N-terminal of LOV2 in kinase photoactivation. Therefore, he investigated the role of this A’α and its neighboring amino acids in kinase photoactivation, photoreaction, and Jα structural change for Atphot1. The LOV2-STK polypeptide (Fig. 4D, underlined in black) was used as a photocontrollable kinase for kinase activity analysis. As a result, it was found that the photoactivation of the kinase was abolished when amino acid substitution was introduced into the A’α / Aβ gap between A’α and Aβ of the LOV2 core. Interestingly, he had no effect on the structural changes in Jα examined on the peptide map due to the photoreaction of LOV2 or trypsin degradation. Therefore, the A’α / Aβ gap is considered to play an important role in intramolecular signal transduction after Jα. Structural changes detected by SAXS Structural changes of Jα have been detected by various biophysical methods other than NMR, but structural information on samples including up to STK is reported only by his results to his SAXS. Not. The SAXS measurement of the Atphot2 LOV2-STK polypeptide showed that the radius of inertia increased from 32.4 Å to 34.8 Å, and the molecular model (Fig. 4F) obtained by the ab initio modeling software GASBOR is that of LOV2 and STK. It was shown that the N lobes and C lobes lined up in tandem, and the relative position of LOV2 with respect to STK shifted by about 13 Å under light irradiation. The difference in the molecular model between the two is considered to reflect the structural changes that occur in the Jα and A’α / Aβ gaps mentioned above. Two phototropins with different photosensitivity In the phototropic reaction of Arabidopsis Arabidopsis, Arabidopsis responds to a very wide range of light intensities from 10–4 to 102 μmol photon / sec / m2. At that time, phot1 functions as an optical sensor in a wide range from low light to strong light, while phot2 reacts with light stronger than 1 μmol photon / sec / m2. What is the origin of these differences? As is well known, animal photoreceptors have a high photosensitivity due to the abundance of rhodopsin and the presence of biochemical amplification mechanisms. The exact abundance of phot1 and phot2 in vivo is unknown, but interesting results have been obtained in terms of amplification. The light intensity dependence of the photoactivation of the LOV2-STK polypeptide used in the above kinase analysis was investigated. It was found that phot1 was about 10 times more photosensitive than phot2. On the other hand, when the photochemical reactions of both were examined, it was found that the rate of the dark return reaction of phot1 was about 10 times slower than that of phot2. This result indicates that the longer the lifetime of S390II, which is in the kinase-activated state, the higher the photosensitivity of kinase activation. This correlation was further confirmed by extending the lifespan of her S390II with amino acid substitutions. This alone cannot explain the widespread differences in photosensitivity between phot1 and phot2, but it may explain some of them. Furthermore, it is necessary to investigate in detail protein modifications such as phosphorylation and the effects of phot interacting factors on photosensitivity. Other LOV photoreceptors Among fern plants and green algae, phytochrome ɾphotosensory module (PSM) on the N-terminal side and chimera photoreceptor with full-length phototropin on the C-terminal side, neochrome (Fig. There are types with 4Ab). It has been reported that some neochromes play a role in chloroplast photolocalization as a red light receiver. It is considered that fern plants have such a chimera photoreceptor in order to survive in a habitat such as undergrowth in a jungle where only red light reaches. In addition to this, plants have only one LOV domain, and three proteins involved in the degradation of photomorphogenesis-related proteins, FKF1 (Flavin-binding, Kelch repeat, F-box 1, ZTL (ZEITLUPE)), LKP2 ( There are LOV Kelch Protein2) (Fig. 4Ac) and aureochrome (Fig. 4Ad), which has a bZip domain on the N-terminal side of LOV and functions as a gene transcription factor. 4. Cryptochrome and UVR8 Cryptochrome is one of the blue photoreceptors and forms a superfamily with the DNA photoreceptor photolyase. It has FAD (flavin adenine dinucle-otide) as a chromophore and tetrahydrofolic acid, which is a condensing pigment. The ground state of FAD is considered to be the oxidized type, and the radical type (broken line in Fig. 1B) generated by blue light irradiation is considered to be the signaling state. The radical type also absorbs in the green to orange light region, and may widen the wavelength region of the plant morphogenesis reaction spectrum. Cryptochrome uses blue light to control physiological functions similar to phytochrome. It was identified as a photoreceptor from one of the causative genes of UVR8 Arabidopsis thaliana, and the chromophore is absorbed in the UVB region by a Trp triad consisting of three tryptophans (Fig. 1D). It is involved in the biosynthesis of flavonoids and anthocyanins that function as UV scavengers in plants. Conclusion It is thought that plants have acquired various photoreceptors necessary for their survival during a long evolutionary process. The photoreceptors that cover the existing far-red light to UVB mentioned here are considered to be some of them. More and more diverse photoreceptor genes are conserved in cyanobacteria and marine plankton. By examining these, it is thought that the understanding of plant photoreceptors will be further deepened.