Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran.
Department of Microbiology, PSGVP Mandal's S I Patil Arts, G B Patel Science and STKV Sangh Commerce College, Shahada, 425409, India.
Sci Rep. 2023 May 6;13(1):7378. doi: 10.1038/s41598-023-34359-6.
Salinity stress is the second most devastating abiotic factor limiting plant growth and yields. Climate changes have significantly increased salinity levels of soil. Besides improving the physiological responses under stress conditions, jasmonates modulate Mycorrhiza-Plant relationships. The present study aimed to evaluate the effects of methyl jasmonate (MeJ) and Funneliformis mosseae (Arbuscular mycorrhizal (AM) on morphology and improving antioxidant mechanisms in Crocus sativus L. under salinity stress. After inoculation with AM, pre-treated C. sativus corms with MeJ were grown under low, moderate, and severe salinity stress. Intense salinity levels damaged the corm, root, total leaf dry weight, and area. Salinities up to 50 mM increased Proline content and Polyphenol oxidase (PPO) activity, but MeJ increased this trend in proline. Generally, MeJ increased anthocyanins, total soluble sugars, and PPO. Total chlorophyll and superoxide dismutase (SOD) activity increased by salinity. The maximum catalase and SOD activities in + MeJ + AM were 50 and 125 mM, respectively, and the maximum total chlorophyll in -MeJ + AM treatment was 75 mM. Although 20 and 50 mM increased plant growth, using mycorrhiza and jasmonate enhanced this trend. Moreover, these treatments reduced the damage of 75 and 100 mM salinity stress. Using MeJ and AM can improve the growth of saffron under various ranges of salinity stress levels; however, in severe levels like 120 mM, this phytohormone and F. mosseae effects on saffron could be adverse.
盐胁迫是限制植物生长和产量的第二大非生物胁迫因素。气候变化显著增加了土壤的盐度。茉莉酸甲酯（MeJ）除了改善胁迫条件下的生理响应外，还调节丛枝菌根（AM）与植物的关系。本研究旨在评估茉莉酸甲酯（MeJ）和摩西管柄囊霉（AM）对盐胁迫下藏红花形态和抗氧化机制的影响。在接种 AM 后，用 MeJ 预处理藏红花球茎，然后在低盐、中盐和高盐胁迫下生长。强烈的盐度水平会损坏球茎、根、总叶干重和面积。盐度高达 50 mM 时会增加脯氨酸含量和多酚氧化酶（PPO）活性，但 MeJ 会增加脯氨酸的这种趋势。一般来说，MeJ 会增加花色苷、总可溶性糖和 PPO。盐度会增加总叶绿素和超氧化物歧化酶（SOD）活性。+MeJ+AM 的最大 CAT 和 SOD 活性分别为 50 和 125 mM，-MeJ+AM 处理的最大总叶绿素为 75 mM。虽然 20 和 50 mM 提高了植物生长，但使用菌根和茉莉酸甲酯增强了这一趋势。此外，这些处理降低了 75 和 100 mM 盐胁迫的损害。使用 MeJ 和 AM 可以改善藏红花在各种盐胁迫水平下的生长；然而，在 120 mM 这样的严重水平下，这种植物激素和摩西管柄囊霉对藏红花的影响可能是不利的。
