scholarly journals PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (SOLANUM LYCOPERSICUM) UNDER SUB-HIGH TEMPERATURE AND HIGH LIGHT STRESS

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Keyword(s):  
High Temperature ◽  
Solanum Lycopersicum ◽  
Xanthophyll Cycle ◽  
Protein Turnover ◽  
Light Stress ◽  
D1 Protein ◽  
High Light ◽  
High Light Stress

scholarly journals Glutathione and zeaxanthin formation during high light stress in foliose lichens

2008 ◽  
Vol 53 (No. 8) ◽  
pp. 340-344 ◽  
Author(s):  
J. Štepigová ◽  
H. Vráblíková ◽  
J. Lang ◽  
K. Večeřová ◽  
M. Barták
Keyword(s):  
Xanthophyll Cycle ◽  
Light Exposure ◽  
Light Stress ◽  
High Light ◽  
Short Term ◽  
Xanthophyll Cycle Pigments ◽  
High Light Stress ◽  
Fluorescence Label ◽  
Thiol Binding ◽  
Pure Acetone

In the presented study, we describe techniques for glutathione and pigment determination in lichens used in our laboratory. Glutathione and xanthophyll cycle pigments, especially zeaxanthin, are important antioxidants protecting plants against various stresses. In our laboratory, the high light stress in lichens has been intensively studied for several years. We extract glutathione in HCl and determine it by thiol-binding fluorescence label monobromobimane. For pigment determination, homogenized lichen thalli are extracted with pure acetone. According to our results, the total amount of glutathione decreases after a short-term high light exposure, while the amount of zeaxanthin increases.

Cloning of the strawberry xanthophyll cycle genes VDE and ZEP and characterization of their responses to high light stress

2017 ◽  
Vol 82 (4) ◽  
pp. 211-220 ◽  
Author(s):  
Haisheng Zhu ◽  
◽  
Mindong Chen ◽  
Wang Bin ◽  
Qingfang Wen ◽  
...  
Keyword(s):  
Xanthophyll Cycle ◽  
Light Stress ◽  
High Light ◽  
High Light Stress

scholarly journals Response of linear and cyclic electron flux to moderate high temperature and high light stress in tomato

2017 ◽  
Vol 18 (7) ◽  
pp. 635-648 ◽  
Author(s):  
Tao Lu ◽  
Jie-wei Shi ◽  
Zhou-ping Sun ◽  
Ming-fang Qi ◽  
Yu-feng Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Electron Flux ◽  
Light Stress ◽  
High Light ◽  
High Light Stress

scholarly journals Papain-like cysteine proteases are required for the regulation of photosynthetic gene expression and acclimation to high light stress

2021 ◽  
Vol 72 (9) ◽  
pp. 3441-3454
Author(s):  
Sarah Alomrani ◽  
Karl J Kunert ◽  
Christine H Foyer
Keyword(s):  
Gene Expression ◽  
Large Subunit ◽  
Light Stress ◽  
D1 Protein ◽  
Carbon Assimilation ◽  
Cysteine Proteases ◽  
High Light ◽  
High Light Stress ◽  
Photosynthetic Gene ◽  
Transgenic Lines

AbstractChloroplasts are considered to be devoid of cysteine proteases. Using transgenic Arabidopsis lines expressing the rice cystatin, oryzacystatin I (OC-I), in the chloroplasts (PC lines) or cytosol (CYS lines), we explored the hypothesis that cysteine proteases regulate photosynthesis. The CYS and PC lines flowered later than the wild type (WT) and accumulated more biomass after flowering. In contrast to the PC rosettes, which accumulated more leaf chlorophyll and carotenoid pigments than the WT, the CYS lines had lower amounts of leaf pigments. High-light-dependent decreases in photosynthetic carbon assimilation and the abundance of the Rubisco large subunit protein, the D1 protein, and the phosphorylated form of D1 proteins were attenuated in the CYS lines and reversed in the PC lines relative to the WT. However, the transgenic lines had higher amounts of LHC, rbcs, pasbA, and pasbD transcripts than the WT, and also showed modified chloroplast to nucleus signalling. We conclude that cysteine proteases accelerate the reconfiguration of the chloroplast proteome after flowering and in response to high-light stress. Inhibition of cysteine proteases, such as AtCEP1, slows chloroplast protein degradation and stimulates photosynthetic gene expression and chloroplast to nucleus signalling, enhancing stress tolerance traits.

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