Salicylic acid induced changes on some physiological parameters symptomatic for oxidative stress and mineral nutrition in maize (Zea mays L.) grown under salinity
Salicylic acid induced changes on some physiological parameters symptomatic for oxidative stress and mineral nutrition in maize (Zea mays L.) grown under salinity
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DOI：
10.1016/j.jplph.2005.12.009
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发表时间：
2007-06-01
影响因子：
4.3
通讯作者：
Cicek, Nuray
中科院分区：
文献类型：
--
作者：
Gunes, Aydin;Inal, Ali;Cicek, Nuray
有人提出，水杨酸（SA）作为一种内源信号分子，负责诱导植物的非生物胁迫耐受性。研究了不同水杨酸 (SA) 供应量（0、0.1、0.5 和 1.0 mM）对 NaCl (40 mM) 胁迫玉米 (Zea mays L.) 生长、矿物质吸收、膜渗透性、脂质过氧化、H2O2 浓度、紫外线吸收物质、叶绿素和类胡萝卜素浓度的影响。外源施用 SA 在盐分和非盐分条件下均显着促进植物生长。由于盐度胁迫，脂质过氧化（以丙二醛（MDA）含量和膜通透性衡量）被 SA 降低。紫外线吸收物质 (UVAS) 和 H2O2 浓度随着 SA 水平的增加而增加。 SA 还强烈抑制 Na+ 和 Cl- 积累，但刺激盐胁迫玉米植物的 N、Mg、Fe、Mn 和 Cu 浓度。这些结果表明SA可以作为潜在的生长调节剂来提高植物的盐胁迫抗性。 (c) 2006 年爱思唯尔有限公司。版权所有。
It has been proposed that salicylic acid (SA) acts as an endogenous signal molecule responsible for inducing abiotic stress tolerance in plants. The effect of varying salicylic acid (SA) supply (0, 0.1, 0.5 and 1.0 mM) on growth, mineral uptake, membrane permeability, lipid peroxidation, H2O2 concentration, UV-absorbing substances, chlorophyll and carotenoid concentrations of NaCl (40 mM) stressed maize (Zea mays L.) was investigated. Exogenously applied SA increased plant growth significantly both in saline and non-saline conditions. As a consequence of salinity stress, lipid peroxidation, measured in terms of malondialdehyde (MDA) content and membrane permeability was decreased by SA. UV-absorbing substances (UVAS) and H2O2 concentration were increased by increasing levels of SA. SA also strongly inhibited Na+ and Cl- accumulation, but stimulated N, Mg, Fe, Mn and Cu concentrations of salt stressed maize plants. These results suggest that SA could be used as a potential growth regulator to improve plant salinity stress resistance. (c) 2006 Elsevier GmbH. All rights reserved.