[1]赵慧,王文虎,文彬,等.干旱胁迫下84K杨与小黑杨苗木生理特性及相关响应基因表达模式分析[J].江苏农业科学,2026,54(8):170-178.
 Zhao Hui,et al.Study on physiological characteristics and related response gene expression patterns of Populus alba×Populus glandulosa and Populus simonii×Populus nigra seedlings under drought stress[J].Jiangsu Agricultural Sciences,2026,54(8):170-178.
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干旱胁迫下84K杨与小黑杨苗木生理特性及相关响应基因表达模式分析()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第54卷
期数:
2026年第8期
页码:
170-178
栏目:
干旱胁迫作物影响
出版日期:
2026-04-20

文章信息/Info

Title:
Study on physiological characteristics and related response gene expression patterns of Populus alba×Populus glandulosa and Populus simonii×Populus nigra seedlings under drought stress
作者:
赵慧1王文虎1文彬1马启航1何辉3党玉丽2
1.河南农业大学林学院,河南郑州 450046; 2.河南农业大学理学院,河南郑州 450003; 3.信阳农林学院林学院,河南信阳 464000
Author(s):
Zhao Huiet al
关键词:
干旱胁迫84K杨小黑杨生理特性响应基因
Keywords:
-
分类号:
S792.110.1
DOI:
-
文献标志码:
A
摘要:
为探究不同程度干旱胁迫下84K杨与小黑杨幼苗的适应性,以不同浓度PEG-6000处理2种杨树幼苗,测定其生长与生理指标以及相关响应基因表达情况。结果表明,轻度、中度干旱胁迫下小黑杨幼苗株高增长率更大,而重度干旱下情况相反。相同程度干旱胁迫下,2种杨树幼苗的叶绿素含量、净光合速率(Pn)、气孔导度(Gs)和蒸腾速率(Tr)均持续下降,且小黑杨降幅更大;2种杨树幼苗的超氧化物歧化酶(SOD)和过氧化物酶(POD)活性均先升后降,且84K杨峰值更高;2种杨树幼苗的丙二醛(MDA)和脯氨酸(Pro)含量持续上升,且胁迫20 d后小黑杨MDA、Pro含量更高。84K杨幼苗的耐旱隶属函数值(0.477)略高于小黑杨(0.445)。2种杨树幼苗PIP1-2、MYB4、ERF15、DREB1基因表达变化模式基本一致,但部分基因在小黑杨中的干旱应答速度滞后于84K杨。综上,相同程度干旱胁迫条件下,2种杨树幼苗干旱响应机制基本一致,但84K杨幼苗的光合作用能力、抗氧化酶调节能力强于小黑杨,说明前者对干旱的适应阈值更广,更适合在我国西北等干旱半干旱地区栽植。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2025-07-03
基金项目:国家自然科学基金(编号:32101547);河南省科技攻关项目(编号:252102110327)。
作者简介:赵慧(1990—),女,河南平舆人,博士,讲师,硕士生导师,主要从事林木抗逆育种研究。E-mail:zhao_hui_zh@163.com。
通信作者:党玉丽,硕士,高级实验师,主要从事植物生理学研究。E-mail:dangyuli2020@163.com。
更新日期/Last Update: 2026-04-20