Drought-induced changes in chlorophyll fluorescence, photosynthetic pigments, and thylakoid membrane proteins of Vigna radiata

Journal of plant interactions

article

Neha Gheek Batra¹  Vinay Sharma¹  Nilima Kumari¹ 

[1] Department of Bioscience and Biotechnology, Banasthali University;Department of Biotechnology, The IIS University

关键词: chlorophyll;    chlorophyll a fluorescence;    D1;    drought;    photosynthesis;   

DOI  :  10.1080/17429145.2014.905801

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

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.

【 授权许可】

CC BY|CC BY-NC