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The PHYB–FOF2–VOZ2 module functions to finetune flowering in response to changes in light quality by modulating FLC expression in Arabidopsis

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Plant Communications 2024年第7期5卷 231-250页

作者： Lina Qu Ming Zhong Feifei Duan Xinmei Li Jiaxin Yang Quanyu Zhou Dongying Tang Reqing He Xuanming Liu Xiaoying Zhao College of Biology Hunan Province Key Laboratory of Plant Functional Genomics and Developmental RegulationHunan Engineering and Technology Research Center of Hybrid RapeseedHunan UniversityChangsha 410082China Shenzhen Institute Hunan UniversityShenzhen 518057China These authors contributed equally to this article

Proper timing of flowering under different environmental conditions is critical for plant *** quality is a pivotal environmental cue that plays a critical role in flowering *** tend to flower late under light with a high red(R)/far-red(FR)light ratio but early under light with a low R/FR light ***,how plants fine-tune flowering in response to changes in light quality is not well ***,we demonstrate that F-box of Flowering 2(FOF2),an autonomous pathway–related regulator,physically interacts with VASCULAR PLANT ONE-ZINC FINGER 1 and 2(VOZ1 and VOZ2),which are direct downstream factors of the R/FR light receptor phytochrome B(PHYB).We show that PHYB physically interacts with FOF2,mediates stabilization of the FOF2 protein under FR light and end-of-day FR light,and enhances FOF2 binding to VOZ2,which leads to degradation of VOZ2 by SCF^(FOF2) E3 *** contrast,PHYB mediates degradation of FOF2 protein under R light and end-of-day R *** interaction studies demonstrated that FOF2 functions downstream of PHYB to promote FLC expression and inhibit flowering under both high R/FR light and simulated shade conditions,processes that are partially dependent on VOZ *** together,our findings suggest a novel mechanism whereby plants fine-tune flowering time through a PHYB–FOF2–VOZ2 module that modulates FLC expression in response to changes in light quality.

关键词： PHYB FOF2 VOZ proteins FLC light quality flowering time

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light quality and temperature effects on antirrhinum growth and development

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第2期6卷 119-124页

作者： KHATTAK Abdul Mateen PEARSON Simon Department of Horticulture Marks and Spenser Public Limited Company NWFP Agricultural University Peshawar Pakistan Michael House Baker Street London WIA IDN UK

An experiment was carried out to examine the effects of light quality on the growth and development of antirrhinum under three different temperatures 19℃, 24℃ and 27℃ in glasshouses. Five different colour filters (i.e. 'Red absorbing', 'Blue absorbing', 'Blue and Red absorbing' and two 'partially Blue absorbing' materials) were tested, with one clear polythene as a control. Plant height, internode length and leaf area were significantly affected by the spectral filters as well as the *** of color filter's effect on presumed photoreceptors to exist indicated that antirrhinum plant height was regulated by the action of a blue acting photoreceptor (BAP) and not the phytochrome. There was no evidence for an effect ofphytochrome or BAP on time to flowering, however, increasing temperature levels effectively decreased the time to flowering. To predict the effects of different spectral qualities and temperature, simple models were created from data on plant height, internode length and time to flowering. These models were then applied to simulate the potential benefits of spectral filters and temperature in manipulation of growth control and flowering in antirrhinum.

关键词： Antirrhinum light quality Temperature Spectral filters Photoreceptors

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Crop photosynthetic response to light quality and light intensity

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Journal of Integrative Agriculture 2021年第1期20卷 4-23页

作者： Iram SHAFIQ Sajad HUSSAIN Muhammad Ali RAZA Nasir IQBAL Muhammad Ahsan ASGHAR Ali RAZA FAN Yuan-fang Maryam MUMTAZ Muhammad SHOAIB Muhammad ANSAR Abdul MANAF YANG Wen-yu YANG Feng College of Agronomy Sichuan Agricultural UniversityChengdu 611130P.R.China Sichuan Engineering Research Center for Crop Strip Intercropping Chengdu 611130P.R.China College of Resources Sichuan Agricultural UniversityChengdu 611130P.R.China Department of Agronomy Pir Mehr Ali Shah Arid Agriculture University RawalpindiPunjab 46300Pakistan

Under natural conditions, plants constantly encounter various biotic and abiotic factors, which can potentially restrict plant growth and development and even limit crop productivity. Among various abiotic factors affecting plant photosynthesis, light serves as an important factor that drives carbon metabolism in plants and supports life on earth. The two components of light(light quality and light intensity) greatly affect plant photosynthesis and other plant's morphological, physiological and biochemical parameters. The response of plants to different spectral radiations and intensities differs in various species and also depends on growing conditions. To date, much research has been conducted regarding how different spectral radiations of varying intensity can affect plant growth and development. This review is an effort to briefly summarize the available information on the effects of light components on various plant parameters such as stem and leaf morphology and anatomy, stomatal development, photosynthetic apparatus, pigment composition, reactive oxygen species(ROS) production, antioxidants, and hormone production.

关键词： light intensity light quality photosynthesis stomatal development pigment composition reactive oxygen species antioxidants plant hormones

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Associative learning in plants:light quality history may matter

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BIOCELL 2022年第3期46卷 645-649页

作者： FATIMA CVRČKOVÁ HANA KONRÁDOVÁ Department of Experimental Plant Biology Faculty of ScienceCharles UniversityPragueCZ 12843Czech Republic

The possibility of associative learning in plants is a topic of ongoing *** one published study,growing pea plants were reported to associate two stimuli(airflow and light)and thereafter use one(airflow)as an indicator for the other(light),similar to dogs in Pavlov’s famous ***,this observation could not be independently *** we examine a possible reason for the failure of a published reproduction attempt,which used substantially different light quality during plant cultivation prior to experimental treatments than in the original *** could have resulted in dramatically different growth *** the relevance of the original report of plant associative learning remains questionable,greater attention should be paid to good documenting and standardizing the light conditions,in particular spectral quality,not only in studies of plant learning and memory,but also in other areas of experimental plant biology.

关键词： Classical conditioning light quality Phototropism Replicability Reproducibility

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Effect of light quality on Photosynthesis and Chlorophyll Fluorescence in Strawberry Leaves

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Agricultural Sciences in China 2004年第9期3卷 678-686页

作者： XUKai GUOYan-ping ZHANGShang-long ZHANGLiang-cheng ZHANGLing-xiao DepartmentofHorticulture ZhejiangUniversity／KeyLaboratoryofHorticulturalPlantGrowthDevelopmentandBiotechnologyMinistryofAgricultureHangzhou310029P.R.China DeltaResearchandExtensionCenter MississippiStateUniversityStonevilleMS38776USA

The photosynthetic characteristics of strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves under illumination of identical light intensity(55-57% natural light) withdifferent light quality were studied. It was showed that the chlorophyll content,maximal photochemical efficiency of PSⅡ(Fv/Fm), Fm/Fo, amount of inactive PSⅡreactioncenters (Fi-Fo) and rate of QA reduction were positively correlated with the red-light/blue-light ratios, but the chlorophyll (a/b) ratios were negatively correlated withthem. Carotenoid content of the leaves was maximum under the blue film, than under greenfilm, red film, white film and yellow film, and negatively correlated with the red/far-red ratios. The apparent quantum yield (AQY), photorespiratory rate (Pr) and carboxylationefficiency (CE) were also strongly affected by light quality. The photosynthetic rate(Pn) in strawberry leaves under green film was significantly lower than under all otherfilm. Our results suggested that light quality is an essential factor regulating thedevelopment of PSⅡ, and phytochrome and an independent blue light photoreceptor,possibly a cryptochrome, can regulate photosynthetic performance.

关键词： Strawberry light quality Chlorophyll fluorescence Photosynthesis Red/Far- red Red/Blue

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Effect of light quality on total gypenosides accumulation and related key enzyme gene expression in Gynostemma pentaphyllum

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Chinese Herbal Medicines 2018年第1期10卷 34-39页

作者： ting wang xiang-rong tian xiao-yu wu zhun luo gui li xiao-lie peng shi-biao liu College Biology and Environmental Science Jishou UniversityJishou 416000China

Objective： light quality has effect on the accumulation of gypenosides in the medicinal plant Gynosternma pentaphyllum in the family Cucurbitaceae, while the squalene synthase （SS） and squalene epoxidase （SE） are the key enzymes for gypenoside biosynthesis, The objective of this study was to elucidate the rela- tionship between light quality and biosynthesis key enzyme involving the regulation of gypenoside accu- mulation. Methods： The content of total gypenosides was measured by colorimetric method and the expression of SS and SE gene was determined by quantitative Real-time PCR in the seedlings of G. pentaphyllum which were grown with different light quality. Results： light quality showed remarkable impacts on the accumulation of total gypenosides. The highest content of total gypenosides in the plant under red light condition was determined, followed by blue light and white light, while the lowest content was recorded under dark condition, qRT-PCR analysis proved that the expression levels of SS and SE genes were also affected by light quality. The high-level gene expressions of SS and SE were found in the plant under red light condition, followed by blue light, with the least content in darkness. The statistical analysis revealed that the total gypenosides were significantly different in different light treatment and the content of total gypenosides was positively related to the expression of SS and SE genes. Conclusions： light quality regulates gypenoside accumulation via altering the expression of SS and SE in G. pentaphyllum.

关键词： gene expression Gynostemma pentaphyllum Gypenosides light quality squalene epoxidase squalene synthase

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Effects of light quality on Carbon and Nitrogen Assimilation and Root Activity of Eggplant

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Agricultural Science & Technology 2017年第12期18卷 2229-2231,2235页

作者： Yuefeng ZHAO Kun CHEN Qinghua ZHANG Yufeng HAN Cangong HAN Shangqiu Academy of Agriculture and Forestry Sciences Shangqiu 476000China

[Objective] This study was conducted to provide theoretical and data reference for high-quality high-yield production of Shangqie 1 under controlled light quality environment and light quality control of other eggplant varieties. [Method] With Shangqie1 as an experiment material, the effects of red light, blue light, red-blue light, red-blue light and white light(control) on the carbon-nitrogen metabolism and root vitality of eggplant were investigated. [Result] Different light quality significantly affected sugar and starch contents in leaves of eggplant. Under the red-blue light(5∶1) treatment, the sucrose, total sugar and starch contents were the highest, and the values were higher than those under the white light treatment by 3.47%, 13.61% and 33.49%,respectively. The fructose content was the highest under white light. Under red-blue light(3∶1) and red-blue light(5∶1), the nitrate nitrogen contents were higher than that under white light, indicating that compound light affects nitrate content not only by simple superposition of light quality, but also by other type of interaction effect. The free amino acid and soluble protein contents under blue, red-blue(3∶1), red-blue(5∶1) and red light treatments were all higher than those under the white light treatment, and the blue light treatment exhibited the highest values, which were higher than those under white light by 24.89% and 46.62%, respectively, with significant differences. The red-blue light(5 ∶1) treatment exhibited the highest root vitality of eggplant, which was higher than that under the white light treatment by 31.85%. The red light treatment had the second highest root vitality, which was higher than that under the white light treatment by 19.30%, followed by the red-blue light(5∶1) treatment, and the blue light treatment showed the lowest value. [Conclusion] Under red-blue light(5 ∶1) treatment, eggplant had vigorous carbon-nitrogen metabolism and the highest root vitality.

关键词： Shangqie 1 light quality Carbon-nitrogen metabolism Root vitality

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light quality-controlled Phytochemicals Biosynthesis in Vegetables and Fruits

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Agricultural Science & Technology 2015年第9期16卷 2029-2035页

作者：王虹王颖许爽朱为民上海市农业科学院设施园艺研究所上海市设施园艺技术重点实验室上海201403

Phytochemicals（including proteins, lipids, carbohydrates, vitamins, minerals,phenolic compounds and so on） are one of the most important groups of the bioactive compounds in vegetables and fruits, benefit for human health. The phytochemicals biosynthesis is affected by environmental factors, and light in particular. light effects can be categorized in photoperiod, intensity and quality. While it is widely known that light intensity can positively affect phytochemicals accumulation, the effects of light quality are more complex and often reported with mixed results. So this review focuses on the currently knowledge about different light quality on the control of phytochemicals biosynthesis. A better knowledge on these regulatory mechanisms will be useful for modifying phytochemicals biosynthesis in vegetables and fruits.

关键词： light quality Ascorbic acid Tocopherols Nitrate Flavonoid

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Regulation of Reproduction in Delayed Gametophyte of Saccharina japonica (Laminariales, Phaeophyceae): Effects of light Intensity, quality and Photoperiod

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Journal of Ocean University of China 2023年第1期22卷 242-250页

作者： WANG Xiao LIANG Zhourui LIU Fuli ZHANG Pengyan YUAN Yanmin LIU Yi WANG Wenjun SUN Xiutao Key Laboratory of Sustainable Development of Marine Fisheries Ministry of AgricultureYellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdao 266071China Key Laboratory of Marine Genetics and Breeding Ministry of EducationCollege of Marine Life ScienceOcean University of ChinaQingdao 266003China

Saccharina japonica gametophytes can survive a long period under unfavorable environmental conditions,while they also delay in growth and/or *** the reproduction in delayed gametophyte of *** was known to be strongly influenced by light intensity,light quality,and photoperiod,no previous studies have evaluated their interactive effects on *** evaluate these effects,we used an orthogonal experiment to expose delayed gametophytes of *** to different light intensities,light qualities,and photoperiods for 12 *** results showed that changes in light intensity rather than light quality and photoperiod significantly affected the relative growth rates of the delayed *** light had the greatest promotion on reproduction *** optimal light conditions in the early vegetative growth phase in gametogenesis induction for the delayed gametophytes were at 60–80μmol photons m^(−2) s^(−1) with daylength of 12 or 16 hours under white or blue *** the delayed gametophytes were maintained in a constant light condition from delayed state to gametogenesis,the beneficial photoperiods for vegetative growth and reproductive rate were both 16L(16 hours of light):8D(8 hours of dark).However,when the delayed *** gametophytes achieve the optimal growth state during the first 6 days and then they were cultured at different light conditions for the following 6 days,the reproduction rate increased as the daylength decreased and attained a peak value in group of 8L:16D photoperiod,indicating that photoperiod adjustment at the transition period is crucial in the gametogenesis induction process of delayed gametophyte of ***.

关键词： Saccharina japonica light intensity light quality photoperiod gametogenesis vegetative growth

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Systematic Identification of the light-quality Responding Anthocyanin Synthesis-related Transcripts in Petunia Petals

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Horticultural Plant Journal 2020年第6期6卷 428-438页

作者： Zhenzhu Fu Hongquan Shang Hui Jiang Jie Gao Xiaoyu Dong Huijuan Wang Yanmin Li Limin Wang Jing Zhang Qingyan Shu Yacong Chao Menglan Xu Rui Wang Liangsheng Wang Hechen Zhang Horticultural Research Institute Henan Academy of Agricultural SciencesZhengzhou 450002China Key Laboratory of Plant Resources/Beijing Botanical Garden Institute of BotanyThe Chinese Academy of SciencesBeijing 100093China College of Forestry Henan Agricultural UniversityZhengzhou 450002China

Previous studies have shown that high light intensity can induce anthocyanin synthesis(AS)in petunia *** identifywhich kind of light quality plays a role in inducing such metabolic process,and what transcripts participate in controlling it,we carried out whole-transcriptome sequencing and analysis of petunia petals treated with different light-quality *** the red and white light treatments,a total of 2205 differentially expressed genes and 15,22,and 20 differentially expressed circRNAs,miRNAs,and lncRNAs,were identified *** AS-related genes,including the structural genes CHSj,F3H,F35H,DFR,and ANS,and the regulatory genes AN4,DPL,PHZ and MYBx were found to be downregulated under red light condition compared with their levels under white light ***,the light photoreceptor Cryptochrome 3(CRY3)and a series of light-dependent genes,such as PIF,HY5,andBBXs,were also determined to respond to the light *** anthocyanin contents in early petunia petals under red light were significantly lower than that under white and blue *** results of qRT-PCR further confirmed the expression pattern of some AS-related and light-response genes in response to different light *** two-hybrid results showed that the key elements in the light signal pathway,HY5 can interact with BBX19,BBX24 and *** PHZ,the important AS regulator can induce anthocyanin synthesis in response to blue light quality fromtransient expression analysis in petunia *** findings presented here not only deepen our understanding of how light quality controls anthocyanin synthesis,but also allow us to explore potential target genes for improving pigment production in petunia flower petals.

关键词： Petunia Anthocyanin Transcription factor light quality Transcriptome analysis

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