|本期目录/Table of Contents|

[1]刘晓青,赵晖,耿兴敏,等.高温胁迫下杜鹃叶片AsA-GSH循环的亚细胞定位分析[J].江苏农业科学,2021,49(18):128-133.
 Liu Xiaoqing,et al.Study on sub-cellular distribution of AsA-GSH cycle in rhododendron leaves under high temperature stress[J].Jiangsu Agricultural Sciences,2021,49(18):128-133.
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高温胁迫下杜鹃叶片AsA-GSH循环的亚细胞定位分析(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第49卷
期数:
2021年第18期
页码:
128-133
栏目:
园艺与林学
出版日期:
2021-09-20

文章信息/Info

Title:
Study on sub-cellular distribution of AsA-GSH cycle in rhododendron leaves under high temperature stress
作者:
刘晓青1 赵晖2 耿兴敏2 李畅1 肖政1 苏家乐1
1.江苏省农业科学院休闲农业研究所/江苏省高效园艺作物遗传改良重点实验室,江苏南京 210014;
2.南京林业大学风景园林学院,江苏南京 210037
Author(s):
Liu Xiaoqinget al
关键词:
杜鹃高温胁迫抗坏血酸-谷胱甘肽循环
Keywords:
-
分类号:
S685.210.1
DOI:
-
文献标志码:
A
摘要:
为明确杜鹃AsA-GSH循环在亚细胞水平上对高温胁迫的响应机制,以耐热性不同的杜鹃品种胭脂蜜、红珊瑚、红月为试验材料,分析高温胁迫下AsA-GSH循环中还原型抗坏血酸(AsA)、还原型谷胱甘肽(GSH)、抗坏血酸过氧化物酶(APX)和谷胱甘肽还原酶(GR)活性在细胞溶质、叶绿体和线粒体中的变化。结果表明:胭脂蜜耐热性高于红珊瑚和红月,高温胁迫后MDA含量仅在红月中显著升高。高温胁迫下胭脂蜜和红珊瑚的AsA、APX和GSH主要存在于细胞溶质中,其次是线粒体和叶绿体,GR的亚细胞分布为线粒体>叶绿体>细胞溶质。红月中4个AsA-GSH循环指标的亚细胞分布与其他2个杜鹃品种不同,APX和GR在叶绿体中活性最高,AsA主要存在于线粒体,GSH则主要存在于细胞溶质中。高温胁迫下,3个杜鹃品种AsA含量在3个亚细胞组分中都有所升高,仅在胭脂蜜叶绿体中显著下降;APX活性都有所升高,但仅在胭脂蜜和红月细胞溶质和红月叶绿体中升高显著;GR仅在胭脂蜜叶绿体中显著升高,在红月的细胞溶质和线粒体中显著下降;GSH在胭脂蜜叶绿体、红珊瑚和红月的细胞溶质中显著降低,在其他亚细胞中变化不显著。本研究未发现杜鹃耐热性强度与抗氧化指标亚细胞分布之间存在相关性。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2020-12-16
基金项目:国家自然科学基金(编号:31700627);江苏省自然科学基金(编号:BK20170607);中央财政林业科技推广示范资金(编号:苏 [2018]TG02);江苏省林业发展专项资金(编号:苏财资环[2020] 26号)。
作者简介:刘晓青(1970—),女,山东青岛人,研究员,主要研究方向为杜鹃花育种与栽培。E-mail:1376660436@qq.com。
通信作者:李畅,硕士,副研究员,主要从事观赏植物种质资源与遗传育种研究。E-mail:changli529@foxmail.com。
更新日期/Last Update: 2021-09-20