FLUCTUATING-LIGHT-ACCLIMATION PROTEIN1, Conserved in Oxygenic Phototrophs, Regulates H+ Homeostasis and Non-Photochemical Quenching in Chloroplasts

Satō, Ryōichi; Kono, Mitsuhiko; Harada, Kyohei; Ohta, Hiroyuki; Takaichi, Shinichi; Masuda, Shinji

doi:10.1093/pcp/pcx110

Cited by 17 publications

(35 citation statements)

References 40 publications

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“…Far‐red light increased the photoprotection of PSI against fluctuating light possibly due to the beneficial effects of far‐red light on photosynthesis thereby accelerating NPQ relaxation and PSII yield (Kono, Yamori, Suzuki, & Terashima, 2017). In a recent study, a FLUCTUATING LICHT ACCLIMATION PROTEIN1 (FLAP1) was identified controlling NPQ formation during fluctuating light (Sato et al, 2017).…”

Section: Light As a Stressormentioning

confidence: 99%

Light acts as a stressor and influences abiotic and biotic stress responses in plants

Roeber

Bajaj

Rohde

et al. 2020

Plant Cell & Environment

155

104

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Light is important for plants as an energy source and a developmental signal, but it can also cause stress to plants and modulates responses to stress. Excess and fluctuating light result in photoinhibition and reactive oxygen species (ROS) accumulation around photosystems II and I, respectively. Ultraviolet light causes photodamage to DNA and a prolongation of the light period initiates the photoperiod stress syndrome. Changes in light quality and quantity, as well as in light duration are also key factors impacting the outcome of diverse abiotic and biotic stresses. Short day or shady environments enhance thermotolerance and increase cold acclimation. Similarly, shade conditions improve drought stress tolerance in plants. Additionally, the light environment affects the plants' responses to biotic intruders, such as pathogens or insect herbivores, often reducing growth‐defence trade‐offs. Understanding how plants use light information to modulate stress responses will support breeding strategies to enhance crop stress resilience. This review summarizes the effect of light as a stressor and the impact of the light environment on abiotic and biotic stress responses. There is a special focus on the role of the different light receptors and the crosstalk between light signalling and stress response pathways.

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Section: Light As a Stressormentioning

confidence: 99%

Light acts as a stressor and influences abiotic and biotic stress responses in plants

Roeber

Bajaj

Rohde

et al. 2020

Plant Cell & Environment

155

104

View full text Add to dashboard Cite

show abstract

“…Although the mechanisms of qE induction are well understood, the detailed mechanisms by which the lumen pH is appropriately adjusted according to light intensity have yet to be elucidated. We recently screened for Arabidopsis genes that are co-expressed with NPQ-related genes that are specifically conserved in oxygenic phototrophs; we identified a gene that encodes an uncharacterized NPQ-regulatory protein, which we named Fluctuating-Light Acclimation Protein1 (FLAP1) (Sato et al, 2017). The Arabidopsis flap1 mutant has a larger NPQ value than does the wild type (WT) and has a pale-green leaf phenotype, but only when grown under light of fluctuating intensity (fluctuating light) (Sato et al, 2017;Trinh et al, 2019), indicating that FLAP1 helps plants acclimate to fluctuating light.…”

Section: Introductionmentioning

confidence: 99%

DAY-LENGTH-DEPENDENT DELAYED-GREENING1, the Arabidopsis Homolog of the Cyanobacterial H+-Extrusion Protein, Is Essential for Chloroplast pH Regulation and Optimization of Non-Photochemical Quenching

Harada

Arizono

Satō

et al. 2019

Plant and Cell Physiology

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Plants convert solar energy into chemical energy through photosynthesis, which supports almost all life activities on earth. Because the intensity and quality of sunlight can change dramatically throughout the day, various regulatory mechanisms help plants adjust their photosynthetic output accordingly, including the regulation of light energy accumulation to prevent the generation of damaging reactive oxygen species. Non-photochemical quenching (NPQ) is a regulatory mechanism that dissipates excess light energy, but how it is regulated is not fully elucidated. In this study, we report a new NPQ-regulatory protein named Day-Length-dependent Delayed-Greening1 (DLDG1). The Arabidopsis DLDG1 associates with the chloroplast envelope membrane, and the dldg1 mutant had a large NPQ value compared with wild type. The mutant also had a pale-green phenotype in developing leaves but only under continuous light; this phenotype was not observed when dldg1 was cultured in the dark for ≥8 h/d. DLDG1 is a homolog of the plasma membrane-localizing cyanobacterial proton-extrusion-protein A that is required for light-induced H+ extrusion and also shows similarity in its amino-acid sequence to that of Ycf10 encoded in the plastid genome. Arabidopsis DLDG1 enhances the growth-retardation phenotype of the Escherichia coli K+/H+ antiporter mutant, and the everted membrane vesicles of the E. coli expressing DLDG1 show the K+/H+ antiport activity. Our findings suggest that DLDG1 functionally interacts with Ycf10 to control H+ homeostasis in chloroplasts, which is important for the light-acclimation response, by optimizing the extent of NPQ.

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“…This might be due to the beneficial effects of FR light on photosynthesis thereby accelerating NPQ relaxation and PSII yield (Kono et al, 2017). In a recent study, a FLUCTUATING-LIGHT-ACCLIMATION PROTEIN1 (FLAP1) was identified probably controlling NPQ formation during FL (Sato et al, 2017).…”

Section: Stress Caused By Fluctuating Lightmentioning

confidence: 99%

Light as a stressor and its impact on biotic and abiotic stress responses in plants

Roeber

Bajaj

Rohde

et al. 2020

Preprint

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Light is important for plant life as a source of energy to drive photosynthesis but also as an environmental signal regulating development or cellular events such as resetting of the circadian clock. Light itself can cause stress such as excess light, fluctuating light, photoperiod and ultraviolet light stress. Light quality, quantity and light duration are important sources of information to prepare plants for future light stress events. Recurring light stress results in acclimation processes to the changing light environment. Furthermore, light regulates the responses of plants to diverse biotic and abiotic stresses. For example, short day conditions or shady environments prime thermotolerance and increase cold acclimation. Similarly, during drought stress, light signaling is important for the plant s stress response. Additionally, the light environment affects the plant s responses to biotic intruders such as pathogens or insect herbivores. Light influence many stress responses resulting in positive growth-defense trade-offs. Under shade, however, plants prioritize growth over defense and stress responses. In this review, we summarize the impact of light as a stressor and its influences on abiotic and biotic stress responses with special focus on the role of the different light receptors and the crosstalk between light signaling components and stress response pathways. ACKNOWLEDGEMENTSWe acknowledge funding by Deutsche Forschungsgemeinschaft (DFG) through Collaborative Research Centre 973 (www.sfb.973) and project Schm 814/29-1. There are no conflicts of interests.

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FLUCTUATING-LIGHT-ACCLIMATION PROTEIN1, Conserved in Oxygenic Phototrophs, Regulates H+ Homeostasis and Non-Photochemical Quenching in Chloroplasts

Cited by 17 publications

References 40 publications

Light acts as a stressor and influences abiotic and biotic stress responses in plants

Light acts as a stressor and influences abiotic and biotic stress responses in plants

DAY-LENGTH-DEPENDENT DELAYED-GREENING1, the Arabidopsis Homolog of the Cyanobacterial H+-Extrusion Protein, Is Essential for Chloroplast pH Regulation and Optimization of Non-Photochemical Quenching

Light as a stressor and its impact on biotic and abiotic stress responses in plants

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