SlHY5 Integrates Temperature, Light, and Hormone Signaling to Balance Plant Growth and Cold Tolerance

Wang, Feng; Zhang, Luyue; Chen, Xiaoxiao; Wu, Xiaodan; Xiao, Xiang; Zhou, Jie; Xia, Xiaojian; Shi, Kai; Yu, Jingquan; Foyer, Christine H.; Zhou, Yanhong

doi:10.1104/pp.18.01140

Cited by 82 publications

(82 citation statements)

References 56 publications

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“…Endogenous ABA and JA were extracted from tomato leaves and determined by LC/MS‐MS on an Agilent 1290 Infinity HPLC system coupled to an Agilent 6460 Triple Quad LC‐MS device (Agilent Technologies, Amstelveen, the Netherlands), as described previously (Wang et al , ). GA was extracted from 1‐g samples of tomato leaves and quantified by a derivation approach coupled with nano‐LC‐ESI‐Q‐TOF‐MS analysis as described previously (Chen et al ., ; Wang et al , ). For the determination of GA levels, D 2 ‐GA 1 , D 2 ‐GA 3 , D 2 ‐GA 4 , D 2 ‐GA 9 , D 2 ‐GA 19 and D 2 ‐GA 20 were added to the extraction solution as internal standards.…”

Section: Methodsmentioning

confidence: 99%

“…Total proteins were extracted from tomato leaves by homogenization in extraction buffer as described previously (Wang et al, 2019). Protein concentrations were measured using Coomassie stain (Bradford, 1976).…”

Section: Immunoblotting Assaysmentioning

confidence: 99%

“…It has been reported that light is essential for the development of cold acclimation in plants (Kim et al, 2002). Furthermore, the circadian clock, photoperiod and light quality also regulate plant cold tolerance (Dong et al, 2011;Franklin and Whitelam, 2007;Lee and Thomashow, 2012;Li et al, 2016b;Wang et al, 2016Wang et al, , 2018Wang et al, , 2019. CIRCADIAN CLOCK-ASSOCIATED 1 (CCA1)-mediated and LATE-ELONGATED HYPOCOTYL (LHY)-mediated outputs from the circadian clock positively regulate plant cold tolerance through the CBF pathway in Arabidopsis (Dong et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Although we found that phytochrome A (phyA) and phyB function antagonistically to regulate cold tolerance in tomato , whether phyA or other photoreceptors are sensors for low temperature remains to be investigated. LONG HYPOCOTYL 5 (HY5), a bZIP transcription factor, acts downstream of phytochromes and integrates light and cold signalling to optimize plant survival under cold stress (Catal a et al, 2011;Wang et al, 2018Wang et al, , 2019. Therefore, plants have evolved a delicate system that perceives light and temperature signals, allowing them to exquisitely detect and predict changes in the natural environment (Franklin, 2009) light-regulated plant development and plant responses to multiple environmental signals (Leivar and Monte, 2014;Leivar and Quail, 2011;Pham et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Crosstalk of PIF4 and DELLA modulates CBF transcript and hormone homeostasis in cold response in tomato

Wang

Chen

Dong

et al. 2019

Plant Biotechnology Journal

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Summary The ability to interpret daily and seasonal fluctuations, latitudinal and vegetation canopy variations in light and temperature signals is essential for plant survival. However, the precise molecular mechanisms transducing the signals from light and temperature perception to maintain plant growth and adaptation remain elusive. We show that far‐red light induces PHYTOCHROME‐INTERACTING TRANSCRIPTION 4 (SlPIF4) accumulation under low‐temperature conditions via phytochrome A in Solanum lycopersicum (tomato). Reverse genetic approaches revealed that knocking out SlPIF4 increases cold susceptibility, while overexpressing SlPIF4 enhances cold tolerance in tomato plants. SlPIF4 not only directly binds to the promoters of the C‐REPEAT BINDING FACTOR (SlCBF) genes and activates their expression but also regulates plant hormone biosynthesis and signals, including abscisic acid, jasmonate and gibberellin (GA), in response to low temperature. Moreover, SlPIF4 directly activates the SlDELLA gene (GA‐INSENSITIVE 4, SlGAI4) under cold stress, and SlGAI4 positively regulates cold tolerance. Additionally, SlGAI4 represses accumulation of the SlPIF4 protein, thus forming multiple coherent feed‐forward loops. Our results reveal that plants integrate light and temperature signals to better adapt to cold stress through shared hormone pathways and transcriptional regulators, which may provide a comprehensive understanding of plant growth and survival in a changing environment.

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Section: Methodsmentioning

confidence: 99%

Section: Immunoblotting Assaysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Crosstalk of PIF4 and DELLA modulates CBF transcript and hormone homeostasis in cold response in tomato

Wang

Chen

Dong

et al. 2019

Plant Biotechnology Journal

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“…SlPHYA and SlPHYB1/SlPHYB2 positively and negatively regulate the CBF pathway and the response to chilling stress by perceiving FR and R light, respectively (Wang et al 2016). Transcript of SlPHYA was significantly increased whereas that of SlPHYB1 and SlPHYB2 decreased dramatically in response to the decrease of temperature, day length, and R/FR ratio (Wang et al 2019) (Figure ). These studies indicate the important roles of phytochromes in regulating chilling and freezing tolerance in tomato and Arabidopsis , through integration of low temperature, light‐quality stimuli, and photoperiod information.…”

Section: Cross‐talk Between Light Signaling and Chilling Tolerance Rementioning

confidence: 99%

Coordination of light, circadian clock with temperature: The potential mechanisms regulating chilling tolerance in rice

Zhou

Fan

et al. 2019

JIPB

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Rice (Oryza sativa L.) is a major staple food crop for over half of the world's population. As a crop species originated from the subtropics, rice production is hampered by chilling stress. The genetic mechanisms of rice responses to chilling stress have attracted much attention, focusing on chilling-related gene mining and functional analyses. Plants have evolved sophisticated regulatory systems to respond to chilling stress in coordination with light signaling pathway and internal circadian clock. However, in rice, information about light-signaling pathways and circadian clock regulation and their roles in chilling tolerance remains elusive. Further investigation into the regulatory network of chilling tolerance in rice is needed, as knowledge of the interaction between temperature, light, and circadian clock dynamics is limited. Here, based on phenotypic analysis of transgenic and mutant rice lines, we delineate the relevant genes with important regulatory roles in chilling tolerance. In addition, we discuss the potential coordination mechanism among temperature, light, and circadian clock in regulating chilling response and tolerance of rice, and provide perspectives for the ongoing chilling signaling network research in rice.

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Plasticity of Arabidopsis rosette transcriptomes and photosynthetic responses in dynamic light conditions

Alameldin

Montgomery

2023

Plant Direct

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With the high variability of natural growth environments, plants exhibit flexibility and resilience in regard to the strategies they employ to maintain overall fitness, including maximizing light use for photosynthesis, while simultaneously limiting light‐associated damage. We measured distinct parameters of photosynthetic performance of Arabidopsis thaliana plants under dynamic light regimes. Plants were grown to maturity then subjected to the following 5‐day (16 h light, 8 h dark) regime: Day 1 at constant light (CL) intensity during light period, representative of a common lab growth condition; Day 2 under sinusoidal variation in light intensity (SL) during the light period that is representative of changes occurring during a clear sunny day; Day 3 under fluctuating light (FL) intensity during the light period that simulates sudden changes that might occur with the movements of clouds in and out of the view of the sun; Day 4, repeat of CL; and Day 5, repeat of FL. We also examined the global transcriptome profile in these growth conditions based on obtaining RNA‐sequencing (RNA‐seq) data for whole plant rosettes. Our transcriptomic analyses indicated downregulation of photosystem I (PSI) and II (PSII) associated genes, which were correlated with elevated levels of photoinhibition as indicated by measurements of nonphotochemical quenching (NPQ), energy‐dependent quenching (q E ), and inhibitory quenching (q I ) under both SL and FL conditions. Furthermore, our transcriptomic results indicated downregulation of tetrapyrrole biosynthesis associated genes, coupled with reduced levels of chlorophyll under both SL and FL compared with CL, as well as downregulation of photorespiration‐associated genes under SL. We also noticed an enrichment of the stress response gene ontology (GO) terms for genes differentially regulated under FL when compared with SL. Collectively, our phenotypic and transcriptome analyses serve as useful resources for probing the underlying molecular mechanisms associated with plant acclimation to rapid light intensity changes in the natural environment.

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SlHY5 Integrates Temperature, Light, and Hormone Signaling to Balance Plant Growth and Cold Tolerance

Cited by 82 publications

References 56 publications

Crosstalk of PIF4 and DELLA modulates CBF transcript and hormone homeostasis in cold response in tomato

Crosstalk of PIF4 and DELLA modulates CBF transcript and hormone homeostasis in cold response in tomato

Coordination of light, circadian clock with temperature: The potential mechanisms regulating chilling tolerance in rice

Plasticity of Arabidopsis rosette transcriptomes and photosynthetic responses in dynamic light conditions

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