Drought-induced changes in chlorophyll fluorescence, photosynthetic pigments, and thylakoid membrane proteins of Vigna radiata
By Neha Batra, Vinay Sharma, Nilima Kumari. 2014
143 citations recorded by the source corpus.
The effects of drought on chlorophyll fluorescence characteristics of PSII, photosynthetic pigments, thylakoid membrane protein (D1), and proline content in different varieties of mung bean plants were studied. Drought stress inhibits PSII activity and induces alterations in D1 protein. We observed a greater decline in the effective quantum yield of PSII, electron transport rate, and saturating photosynthetically active photon flux density (PPFDsat) under drought stress in var. Anand than var. K-851 and var. RMG 268. This may possibly be due to either downregulation of photosynthesis or photoinhibition process. Withholding irrigation resulted in gradual diminution in total Chl content at Day 4 of stress. HPLC analysis revealed that the quantity of β-carotene in stressed plants was always higher reaching maxima at Day 4. Photoinactivation of PSII in var. Anand includes the loss of the D1 protein, probably from greater photosynthetic damage caused by drought stress than the other two varieties.
Subfields: Molecular Biology, Plant Science
View Paper: https://www.semanticscholar.org/paper/126d162b5595088efbdbac2834d65efb838801c4
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Citations in the corpus
- Molecular responses to drought stress in plants (2017, unknown): “Unlike chlorophyll, an increase in xanthophyll pigments such as zeaxanthin and antheraxanthin in plants under water stress has been reported (Batra et al. 2014).”
- Special issue in honour of Prof. Reto J. Strasser - Chlorophyll a fluorescence parameters as indicators of a particular abiotic stress in rice (2020, background): “Osmotic stress reduces PSII activity, decreases the effective quantum yield of PSII, and causes degradation of D1 protein leading to the inactivation of PSII reaction center (Batra et al. 2014, Asrar et al. 2017).”