Mitigation of salt stress and stimulation of growth by salicylic acid and calcium chloride seed priming in two barley species

Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology Pub Date : 2023-04-06 DOI:10.1080/11263504.2023.2200792

Rim Ben Youssef, N. Boukari, C. Abdelly, N. Jelali

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引用次数: 1

Abstract

Abstract The main objective of the current study is to underline the effects of salicylic acid or calcium chloride seed priming on plant growth, water content, chlorophyll content and photosynthetic activity of two barley species Hordeum marinum and Hordeum vulgare exposed to salinity (0, 100 and 200 mM NaCl). Results revealed that salinity decreased shoot and root growth, transpiration rate, chlorophyll concentration, stomata conductivity and water content in plants obtained from unprimed seeds. This reduction was dependent on the saline concentration used. However, Hordeum marinum species showed tolerance by maintaining tissue hydration, growth, photosynthetic assimilation and chlorophyll biosynthesis in stressed plants compared to controls. Moreover, priming seeds with salicylic acid or calcium chloride significantly improved all the above parameters under different salt treatments, suggesting that the effectiveness of this approach mainly depends on the priming agent applied and may vary with species and stress intensity applied.

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水杨酸和氯化钙灌种对两种大麦盐胁迫的缓解和生长刺激

摘要本研究旨在研究水杨酸或氯化钙灌种对盐(0、100和200 mM NaCl)胁迫下大麦Hordeum marinum和Hordeum vulgare植株生长、含水量、叶绿素含量和光合活性的影响。结果表明，盐度降低了未处理种子植株的茎和根生长、蒸腾速率、叶绿素浓度、气孔电导率和水分含量。这种减少取决于所使用的生理盐水浓度。然而，与对照相比，海洋Hordeum物种在逆境中通过维持组织水化、生长、光合同化和叶绿素生物合成表现出耐受性。此外，水杨酸或氯化钙在不同盐处理下均显著提高了上述参数，表明该方法的有效性主要取决于所施用的引发剂，并可能因施用的物种和胁迫强度而异。

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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Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology

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