|本期目录/Table of Contents|

[1]沈昀,马甜,王梦雨.水杨酸对干旱胁迫下凤仙花生长、生理特性及相关基因表达的影响[J].江苏农业科学,2022,50(17):143-149.
 Shen Yun,et al.Impacts of salicylic acid on growth,physiological characteristics and related gene expression of Impatiens balsamina under drought stress[J].Jiangsu Agricultural Sciences,2022,50(17):143-149.
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水杨酸对干旱胁迫下凤仙花生长、生理特性及相关基因表达的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第50卷
期数:
2022年第17期
页码:
143-149
栏目:
园艺与林学
出版日期:
2022-09-05

文章信息/Info

Title:
Impacts of salicylic acid on growth,physiological characteristics and related gene expression of Impatiens balsamina under drought stress
作者:
沈昀马甜王梦雨
江苏农牧科技职业学院,江苏泰州 225300
Author(s):
Shen Yunet al
关键词:
干旱胁迫水杨酸氧化酶脯氨酸基因表达P5CS基因P5CR基因
Keywords:
-
分类号:
S681.101
DOI:
-
文献标志码:
A
摘要:
为探讨凤仙花对干旱胁迫的应答机制及水杨酸(SA)对凤仙花抗旱性的影响,以凤仙花幼苗为试材,研究外源SA不同浓度水平(0、1、2 mmol/L,分别记为SA0、SA1、SA2)对不同基质含水率(95%、75%、55%,分别记为WW95、WW75、WW55)下凤仙花幼苗生长发育、叶绿素含量、抗氧化酶活性、渗透调节物质及相关合成基因的影响。结果表明,随着干旱程度加剧,凤仙花植株地上部、根系生长参数及光合色素含量随之受到显著影响,在此基础上外源施用SA减轻了干旱胁迫带来的不利影响,并增加了植株水分利用及水势,且SA2处理整体优于SA1处理。与WW95处理相比,干旱胁迫处理(WW75、WW55)提高了植株丙二醛(MDA)、H2O2含量及CAT、SOD、APX活性,而SA施用处理(SA1、SA2)条件下脯氨酸含量呈相反趋势。此外,轻度和中度干旱(75%、55%)下,与SA0处理相比,SA2处理的P5CS基因相对表达量分别显著提高91.51%、4.58%,P5CR基因则分别显著上调47.65%、54.87%。综上,干旱胁迫下外源施用2 mmol/L水杨酸可有效改善凤仙花的生长发育,保护光合色素,提高抗氧化酶活性,上调P5CS、P5CR基因表达及促进脯氨酸合成,从而降低干旱胁迫导致的脂质过氧化和氧化损伤。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2022-03-17
基金项目:江苏农牧科技职业学院科研项目(编号:NSF2021RK04)。
作者简介:沈昀(1986—),女,江苏泰州人,硕士,讲师,主要从事园林植物应用研究。E-mail:sy_jsmy@163.com。
更新日期/Last Update: 2022-09-05