文献类型： 外文期刊

作者： Sheteiwy, Mohamed S. S. ¹ ; Ulhassan, Zaid ⁴ ; Qi, Weicong ⁶ ; Lu, Haiying ¹ ; AbdElgawad, Hamada ⁸ ; Minkina, Tatiana ³ ; Sushkova, Svetlana ³ ; Rajput, Vishnu D. D. ³ ; El-Keblawy, Ali ⁹ ; Josko, Izabela ¹⁰ ; Sulieman, Saad ¹¹ ; El-Esawi, Mohamed A. A. ¹² ; El-Tarabily, Khaled A. A. ¹³ ; AbuQamar, Synan F. F. ¹³ ; Yang, Haishui ¹⁶ ; Dawood, Mona ¹ ;

作者机构： 1.Nanjing Forestry Univ, Coll Biol & Environm, Nanjing, Peoples R China

2.Mansoura Univ, Fac Agr, Dept Agron, Mansoura, Egypt

3.Southern Fed Univ, Acad Biol & Biotechnol, Rostov Na Donu, Russia

4.Zhejiang Univ, Inst Crop Sci, Hangzhou, Peoples R China

5.Zhejiang Univ, Zhejiang Key Lab Crop Germplasm, Hangzhou, Peoples R China

6.Jiangsu Acad Agr Sci JAAS, Inst Agr Resources & Environm, Nanjing, Peoples R China

7.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing, Peoples R China

8.Univ Beni Suef, Fac Sci, Dept Bot, Bani Suwayf, Egypt

9.Univ Sharjah, Fac Sci, Dept Appl Biol, Sharjah, U Arab Emirates

10.Assiut Univ, Fac Sci, Dept Bot & Microbiol, Assiut, Egypt

11.Univ Khartoum, Fac Agr, Dept Agron, Khartoum, Sudan

12.Tanta Univ, Fac Sci, Dept Bot, Tanta, Egypt

13.United Arab Emirates Univ, Coll Sci, Dept Biol, Al Ain, U Arab Emirates

14.United Arab Emirates Univ, Khalifa Ctr Genet Engn & Biotechnol, Al Ain, U Arab Emirates

15.Murdoch Univ, Harry Butler Inst, Murdoch, WA, Australia

16.Nanjing Agr Univ, Coll Agr, Nanjing, Peoples R China

关键词： jasmonic acid; Na+ transporter-related gene expression; nutrient homeostasis; salinity; wheat

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Salinity is a global conundrum that negatively affects various biometrics of agricultural crops. Jasmonic acid (JA) is a phytohormone that reinforces multilayered defense strategies against abiotic stress, including salinity. This study investigated the effect of JA (60 mu M) on two wheat cultivars, namely ZM9 and YM25, exposed to NaCl (14.50 dSm(-1)) during two consecutive growing seasons. Morphologically, plants primed with JA enhanced the vegetative growth and yield components. The improvement of growth by JA priming is associated with increased photosynthetic pigments, stomatal conductance, intercellular CO2, maximal photosystem II efficiency, and transpiration rate of the stressed plants. Furthermore, wheat cultivars primed with JA showed a reduction in the swelling of the chloroplast, recovery of the disintegrated thylakoids grana, and increased plastoglobuli numbers compared to saline-treated plants. JA prevented dehydration of leaves by increasing relative water content and water use efficiency via reducing water and osmotic potential using proline as an osmoticum. There was a reduction in sodium (Na+) and increased potassium (K+) contents, indicating a significant role of JA priming in ionic homeostasis, which was associated with induction of the transporters, viz., SOS1, NHX2, and HVP1. Exogenously applied JA mitigated the inhibitory effect of salt stress in plants by increasing the endogenous levels of cytokinins and indole acetic acid, and reducing the abscisic acid (ABA) contents. In addition, the oxidative stress caused by increasing hydrogen peroxide in salt-stressed plants was restrained by JA, which was associated with increased alpha-tocopherol, phenolics, and flavonoids levels and triggered the activities of superoxide dismutase and ascorbate peroxidase activity. This increase in phenolics and flavonoids could be explained by the induction of phenylalanine ammonia-lyase activity. The results suggest that JA plays a key role at the morphological, biochemical, and genetic levels of stressed and non-stressed wheat plants which is reflected in yield attributes. Hierarchical cluster analysis and principal component analyses showed that salt sensitivity was associated with the increments of Na+, hydrogen peroxide, and ABA contents. The regulatory role of JA under salinity stress was interlinked with increased JA level which consequentially improved ion transporting, osmoregulation, and antioxidant defense.