Differential photosynthetic responses in Riccia gangetica under heat, cold, salinity, submergence, and UV-B stresses

IF 3.261 Journal of Photochemistry and Photobiology Pub Date : 2022-12-01 DOI:10.1016/j.jpap.2022.100146

Upma Bhatt, Shubhangani Sharma, Vineet Soni

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引用次数: 2

Abstract

Chlorophyll fluorescence transients are recognized as one of the most efficient methods for assessing plant photosynthetic efficiency under stressful conditions. The focus of this research was to investigate R. gangetica's photosynthetic performance under several abiotic stressors, including cold, heat, flooding, salinity, and UV. Chlorophyll (chl), proline, malondialdehyde (MDA) contents, specific energy fluxes (per Q_A-reducing PSII reaction center) such as ABS/RC, TR₀/RC, ET₀/RC, DI₀/RC, phenomenological fluxes, (ABS/CSm, TR/CSm, ETo/CSm), quantum yields (ɸPo, ɸEo, ɸDo), and performance indices (PI_cs and PI_abs) were analyzed. Chl content, Fm, Fv/Fm, and PIcs were recognized as highly sensitive parameters to all abiotic stresses. The results of the present study clearly show that R. gangetica has distinct biochemical and physiological strategies for dealing with the negative effects of various abiotic stressors. On the basis of present investigations, tolerance potential against several abiotic stimuli in R. gangetica can be ranked as follows Sl, UV, Ht, Fd, and Cd.

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gangetica在热、冷、盐、淹水和UV-B胁迫下的差异光合反应

叶绿素荧光瞬态被认为是评估植物在逆境条件下光合效率的最有效方法之一。本研究的重点是研究在冷、热、淹水、盐和紫外线等几种非生物胁迫条件下gangetica的光合性能。分析了叶绿素(chl)、脯氨酸(脯氨酸)、丙二醛(MDA)含量、ABS/RC、TR0/RC、ET0/RC、DI0/RC的比能通量(每qa还原PSII反应中心)、现象通量(ABS/CSm、TR/CSm、ETo/CSm)、量子产率(h Po、h Eo、h Do)和性能指标(PIcs和PIabs)。Chl含量、Fm、Fv/Fm和PIcs被认为是对所有非生物胁迫高度敏感的参数。本研究结果清楚地表明，gangetica有不同的生化和生理策略来应对各种非生物应激源的负面影响。根据目前的研究，gangetica对几种非生物刺激的耐受性潜力可分为Sl、UV、Ht、Fd和Cd。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Photochemistry and Photobiology

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4.10

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