干旱胁迫下水杨酸对香茅部分生理生化指标的积极影响

B. Mohammadi, M. Rezayian, H. Ebrahimzadeh, J. Hadian, M. Mirmasoumi
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引用次数: 2

摘要

香茅是马鞭草科的一种珍贵药用植物。本研究旨在评价水杨酸(SA)在减少干旱胁迫对柠檬草有害影响方面的潜在作用。在胁迫(5%、10%、15%和20% PEG)和非胁迫条件下,用SA(0.5和1 mM)处理柠檬草植株。水分亏缺胁迫下,鲜重和相对含水量显著降低。过氧化氢(H2O2)和丙二醛(MDA)含量的增加表明干旱诱导了柠檬的氧化应激。水分亏缺胁迫显著提高了蛋白质含量、脯氨酸含量和抗氧化酶活性。外源施用SA降低了干旱胁迫植株的MDA和H2O2含量,提高了超氧化物歧化酶(SOD)、过氧化物酶(POX)和叶绿素含量。结果表明,SA能最大限度地减少干旱胁迫的负面影响,可用于改善柠檬草的干旱胁迫。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Positive effects of salicylic acid on some biochemical and physiological parameters of Aloysia citrodora under drought stress
Lippia citriodora H.B.K. is a valuable medicinal plant of Verbenaceae family. This study was calculated to evaluate potential role of salicylic acid (SA) in diminish the harmful effects of drought stress on L. citriodora plants. SA (0.5 and 1 mM) was used to L. citriodora plants grown under stressed (5, 10, 15 and 20% PEG) and unstressed conditions. Fresh weight (FW) and relative water content (RWC) significantly decreased under water deficit stress. Increase in hydrogen peroxide (H2O2) and malondialdehyde (MDA) content indicated drought-induced oxidative stress in L. citriodora. Water deficit stress significantly increased the protein content, proline content and antioxidative enzymes activities. The exogenous application of SA to drought-stressed plants reduced the content of MDA and H2O2 and increased superoxide dismutase (SOD), peroxidase (POX) and chlorophyll content. It is suggested that SA minimizes the negative effects of drought stress and could be used for amelioration of drought stress in L. citriodora.
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