Interplay Impact of Exogenous Application of Abscisic Acid (ABA) and Brassinosteroids (BRs) in Rice Growth, Physiology, and Resistance under Sodium Chloride Stress
文献类型： 外文期刊
作者： Hussain, Sajid 1 ; Nanda, Satyabrata 1 ; Ashraf, Muhammad 4 ; Siddiqui, Ali Raza 5 ; Masood, Sajid 4 ; Khaskheli, Maqsood Ahmed 1 ; Suleman, Muhammad 2 ; Zhu, Lianfeng 1 ; Zhu, Chunquan 1 ; Cao, Xiaochuang 1 ; Kong, Yali 1 ; Jin, Qianyu 1 ; Zhang, Junhua 1 ;
作者机构： 1.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Peoples R China
2.Pak Arab Fertilizer Ltd, Soil & Water Testing Lab, Mkt Div, Multan 66000, Pakistan
3.Centurion Univ Technol & Management, MS Swaminathan Sch Agr, Paralakhemundi 761211, India
4.Bahauddin Zakariya Univ, Dept Soil Sci, Multan 60700, Pakistan
5.Univ Punjab, Fac Agr Sci, Dept Soil Sci, Quid Eazam Campus, Lahore 54590, Pakistan
6.Guizhou Univ, Agr Coll, Dept Plant Pathol, Guiyang 550001, Peoples R China
关键词： rice; phytohormone; salt stress; photosynthesis; SPAD value; grain yield
期刊名称：LIFE-BASEL （ 影响因子：3.2； 五年影响因子：3.2 ）
ISSN：
年卷期： 2023 年 13 卷 2 期
页码：
收录情况： SCI
摘要： The hormonal imbalances, including abscisic acid (ABA) and brassinosteroid (BR) levels, caused by salinity constitute a key factor in hindering spikelet development in rice and in reducing rice yield. However, the effects of ABA and BRs on spikelet development in plants subjected to salinity stress have been explored to only a limited extent. In this research, the effect of ABA and BRs on rice growth characteristics and the development of spikelets under different salinity levels were investigated. The rice seedlings were subjected to three different salt stress levels: 0.0875 dS m(-1) (Control, CK), low salt stress (1.878 dS m(-1), LS), and heavy salt stress (4.09 dS m(-1), HS). Additionally, independent (ABA or BR) and combined (ABA+BR) exogenous treatments of ABA (at 0 and 25 mu M concentration) and BR (at 0 and 5 mu M concentration) onto the rice seedlings were performed. The results showed that the exogenous application of ABA, BRs, and ABA+BRs triggered changes in physiological and agronomic characteristics, including photosynthesis rate (Pn), SPAD value, pollen viability, 1000-grain weight (g), and rice grain yield per plant. In addition, spikelet sterility under different salt stress levels (CK, LS, and HS) was decreased significantly through the use of both the single phytohormone and the cocktail, as compared to the controls. The outcome of this study reveals new insights about rice spikelet development in plants subjected to salt stress and the effects on this of ABA and BR. Additionally, it provides information on the use of plant hormones to improve rice yield under salt stress and on the enhancement of effective utilization of salt-affected soils.
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