外源NO和SA处理对玉米苗期盐胁迫的缓解效应
万文华 , 白明兴 , 雷恭鑫 , 杨小雯 , 姬祥卓 , 庄泽龙 , 张云芳 , 彭云玲
甘肃农业大学学报 ›› 2024, Vol. 59 ›› Issue (03) : 108 -116.
外源NO和SA处理对玉米苗期盐胁迫的缓解效应
Mitigating effects of exogenous NO and SA on salt stress in maize seedlings
目的 探讨外源一氧化氮(NO)和水杨酸(SA)单独及复配施用对盐胁迫下玉米幼苗表型及抗氧化特性的调控效应。 方法 本研究以盐敏感自交系PH4CV为试验材料,在苗期以180 mmol/L NaCl溶液作为胁迫条件,设置两个对照蒸馏水(CK+)、盐胁迫(CK-),盐胁迫下单独和复配根施不同浓度外源NO供体硝普纳(SNP)和SA,旨在探讨SNP和SA对玉米苗期盐胁迫的缓解效应。 结果 与盐处理相比,根施1/2×(0.05 mmol/LSNP+0.5 mmol/L SA)对PH4CV的各指标有显著提高作用(P<0.05),其苗长、根长、地上鲜质量、地下鲜质量、根数分别增加了64.83%、73.00%、73.81%、71.43%、58.63%,CAT、POD、SOD活性分别增加了69.60%、22.40%、32.90%。然而根施0.05 mmol/L SNP其苗长、根长、地上鲜质量、地下鲜质量、根数分别增加了61.62%、72.64%、67.65%、62.50%、58.63%,CAT、POD、SOD活性分别增加了32.14%、20.47%、5.69%,根施0.5 mmol/L SA其苗长、根长、地上鲜质量、地下鲜质量、根数分别增加了63.27%、68.68%、70.67%、68.97%、57.13%,CAT、POD、SOD活性分别增加了44.93%、3.76%、21.76%。 结论 单独和复配施用最佳浓度的外源SNP和SA均可缓解PH4CV受到的盐胁迫,且以复配处理效果更好,说明复配根施SA和SNP在提高玉米幼苗抗盐能力方面具有协同增效作用。
Objective To investigate the regulatory effects of exogenous nitric oxide (NO) and salicylic acid (SA) on the phenotype and antioxidant properties of maize seedlings under salt stress. Method In this study,the salt-sensitive inbred line PH4CV was used as the test material.At the seedling stage,180 mmol/L NaCl solution was used as the stress condition.Two controls,distilled water (CK+) and salt stress (CK-),were established. Result Compared with salt treatment,root application of 1/2×(0.05 mmol/L SNP+0.5 mmol/L SA) significantly increased the indices of PH4CV (P<0.05): seedling length,root length,above-ground fresh weight,below-ground fresh weight and root number increased by 64.83%,73.00%,73.81%,71.43% and 58.63%,respectively.The activities of CAT,POD and SOD increased by 69.60%,22.40% and 32.90% respectively.However,seedling length,root length,aboveground fresh weight,underground fresh weight and root number of 0.05 mmol/L SNP increased by 61.62%,72.64%,67.65%,62.50% and 58.63%,respectively,and the activities of CAT,POD and SOD increased by 32.14%,20.47% and 5.69%,respectively.Seedling length,root length,aboveground fresh weight,underground fresh weight and root number at 0.5 0.5 mmol/L SA increased by 63.27%,68.68%,70.67%,68.97% and 57.13% respectively,while CAT,POD and SOD activities increased by 44.93%,3.76% and 21.76% respectively. Conclusion Both single and combined application of exogenous SNP and SA at optimal concentrations could alleviate salt stress on PH4CV,and the combined treatment had a better effect,indicating that the combined application of SA and SNP had a synergistic effect in improving salt resistance of maize seedlings.
maize / nitric oxide / salicylic acid / salt stress / coordination efficiency
Uij =(Xij -Xijmin)/(Xijmax-Xijmin)
| [1] |
金兵兵,姬祥卓,庄泽龙, |
| [2] |
刘洁,阎世江.盐碱地对玉米植株生长及产量的影响[J].天津农林科技,2020(5):19-21. |
| [3] |
王丽红,豆昕桐,王英杰, |
| [4] |
丁建文,张晓辰,杨兴, |
| [5] |
王华笑,刘环,杨国平, |
| [6] |
张春宵,李淑芳,金峰学, |
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
李燕,张敏,宁朋, |
| [11] |
钟程,田鑫,冉露霞, |
| [12] |
杨艺,常丹,王艳, |
| [13] |
周伟江,吴旺嫔,唐才宝, |
| [14] |
张丽.吲哚乙酸对盐胁迫下草莓试管苗生长的影响[J].农业工程技术,2017,37(5):24. |
| [15] |
朱营营,张倩,董元杰.外源NO缓解花生盐胁迫的效果及机理[J].中国农业大学学报,2020,25(12):30-39. |
| [16] |
陈花,王建武,王建军, |
| [17] |
华智锐,姚丹妮,李小玲.外源水杨酸对NaCl胁迫下桔梗幼苗生理生化指标的影响[J].江西农业学报,2021,33(6):13-18. |
| [18] |
曹林山.外源水杨酸对盐胁迫下四季锦带生理特性的影响[J].陕西林业科技,2021,49(4):5-8. |
| [19] |
孙德智,杨恒山,彭靖, |
| [20] |
陈奋奇,方鹏,白明兴, |
| [21] |
|
| [22] |
|
| [23] |
狄红艳.一氧化氮对盐胁迫下玉米种子萌发及幼苗生长的影响[J].农业科学研究,2017,38(4):20-23. |
| [24] |
高山.水杨酸和脱落酸对氯化钠胁迫下玉米幼苗生理生化指标和DNA甲基化的影响[D].长春:吉林农业大学,2017. (下转第128页) |
| [25] |
李世玉,程登虎,闫星, |
| [26] |
张敏,李燕,宁朋, |
| [27] |
王芳,王汉宁.外源NO对NaCl胁迫下玉米幼苗氧化损伤的保护作用[J].草地学报,2012,20(6):1117-1122. |
| [28] |
曾丽萍,王楠琪,李新国.外源水杨酸对盐胁迫下巴西蕉生理的影响[J].热带作物学报,2022,43(6):1160-1165. |
| [29] |
刘建福,王明元,唐源江, |
| [30] |
张倩,贺明荣,陈为峰, |
| [31] |
孙德智,韩晓日,彭靖, |
| [32] |
任艳芳,薛宇豪,田丹, |
| [33] |
孙德智,韩晓日,彭靖, |
中央引导地方科技发展专项基金项目(ZCYD-2021)
兰州市科技局项目(2020-RC-122)
/
| 〈 |
|
〉 |