文献类型：期刊文献

中文题名：S-诱抗素对不同盐胁迫下水稻生理特性及产量的影响

英文题名：Effects of S-ABA on Physiological Characteristics and Yield of Rice Under Different Salt Stresses

作者：蒋文鑫[1];马国辉[1,2];赵黎明[1];黄安琪[1];冯乃杰[2];郑殿峰[1];邹武龙[3]

机构：[1]广东海洋大学滨海农业学院,广东湛江524088;[2]湖南杂交水稻研究中心杂交水稻国家重点实验室,湖南长沙410125;[3]江西新瑞丰生化股份有限公司,江西吉安343000

年份：2023

卷号：37

期号：12

起止页码：2485

中文期刊名：核农学报

外文期刊名：Journal of Nuclear Agricultural Sciences

收录：CSTPCD、、CSCD2023_2024、北大核心、CSCD、北大核心2020

基金：广东省重点领域研发计划项目(2020B020219004);广东省普通高校创新团队项目(2021KCXTD011);湛江市创新创业团队引育领航计划项目(2020LHJH01);广东省教育厅普通高校重点领域专项(2021ZDZX4027)。

语种：中文

中文关键词：水稻;S-诱抗素;盐胁迫;抗氧化损伤;产量

外文关键词：rice;S-ABA;salt stress;oxidative damage;yield

中文摘要：为探讨S-诱抗素(S-ABA)对调控水稻(Oryza sativa L.)应对逆境胁迫、促进作物逆境生长的作用,以湘两优900为试验材料,在两叶一心及分蘖盛期喷施0.03 mg·L^(-1)S-ABA(稀释1000倍),于三叶一心和移栽后返青第5天进行0(CK)、0.3%(N1)和0.6%(N2)NaCl胁迫处理,分析S-ABA对不同生育时期(分蘖期、拔节期和抽穗期)盐胁迫下水稻表型和生理特性的影响。结果表明,盐胁迫抑制水稻植株生长,且抑制效果随盐浓度的增加和生育期的延长而增强;与对照(CK)相比,N1、N2处理抑制各生育期光合作用,使各生育期内抗氧化酶活性显著升高,丙二醛(MDA)、过氧化氢(H_(2)O_(2))和可溶性蛋白含量增加,并提高了非酶促抗氧化物质含量;与CK相比,N1、N2处理分别减产21.09%和55.16%;叶面喷施SN1(S-ABA+0.3%NaCl)和SN2(S-ABA+0.6%NaCl)能促进盐胁迫下水稻植株生长,提高各生育期内的光合能力和叶绿素含量,进一步增强各生育时期内的抗氧化物酶活性、非酶促抗氧化物质含量和可溶性蛋白含量,抑制活性氧积累,降低MDA和H_(2)O_(2)含量,SN1较N1、SN2较N2处理分别增产37.47%和70.18%。综上所述,叶面喷施S-ABA可通过增强各生育时期内的光合特性、抗氧化水平和渗透调节能力来有效缓解水稻盐害,最终实现盐胁迫下水稻增产。本研究结果为水稻耐盐性研究及提高盐胁迫下水稻产量提供了理论指导。

外文摘要：Salt stress severely restricts the growth and yield of rice(Oryza sativa L.).S-ABA plays an important role in regulating plant response to various stresses and promoting crop growth in adversity.This study used Xiangliangyou 900 as the experimental material to explore the effects of S-ABA on the phenotypic and physiological characteristics of rice at different growth stages(Tillering,Jointing and Heading)under salt stress.During the two-leaf one-heart stage and tillering stage,the samples were sprayed with a 0.03 mg·L^(-1) S-ABA(diluted 1000 times)solution,while the 0(CK),0.3%(N1)and 0.6%(N2)NaCl stress treatments were carried out at the three-leaf one-heart stage and on the Day 5 after transplanting.As the results,salt stress significantly inhibited the growth of rice plants,and the inhibition effect increased with the increase of salt concentration and the prolonging of growth period.Compared with control(CK)group,samples treated with N1 and N2 inhibited photosynthesis at each growth stage,but the treatments greatly increased antioxidant enzyme activity during each growth period,and the values of malondialdehyde(MDA),hydrogen peroxide(H_(2)O_(2)),soluble protein content non-enzymatic antioxidants were also increased.In addition,compared with CK,the yield of N1 and N2 treatments decreased by 21.09%and 55.16%,respectively.Foliar spraying of SN1(S-ABA+0.3%NaCl)and SN2(S-ABA+0.6%NaCl)promoted the growth of rice plants under salt stress,improved the photosynthetic capacity and chlorophyll content in each growth period,and further enhanced the antioxidant enzyme activity,non-enzymatic antioxidant content and soluble protein content in each growth period.However,these treatments inhibited the accumulation of reactive oxygen species,reduced the content of MDA and H_(2)O_(2),and finally increased the yield of SN1 and SN2 by 37.47%and 70.18%,respectively,compared with N1 and N2 treatments.In summary,foliar spraying S-ABA can effectively alleviate rice salt damage by enhancing photosynthetic characteristics,antioxidant level and osmoregulation ability in each growth period,and ultimately increased rice yield under salt stress.The results of this study provided theoretical guidance for the study of rice salt tolerance and the improvement of rice yield under salt stress.