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红树内生细菌RS261防治辣椒疫病机理的初步研究
被引:16
作者
:
柳凤
论文数:
0
引用数:
0
h-index:
0
机构:
广东海洋大学农学院
柳凤
论文数:
引用数:
h-index:
机构:
欧雄常
论文数:
引用数:
h-index:
机构:
何红
胡汉桥
论文数:
0
引用数:
0
h-index:
0
机构:
广东海洋大学农学院
胡汉桥
论文数:
引用数:
h-index:
机构:
关秀琼
机构
:
[1]
广东海洋大学农学院
来源
:
植物病理学报
|
2010年
/ 40卷
/ 01期
基金
:
广东省科技计划;
关键词
:
红树;
内生细菌RS261;
辣椒疫病;
防治机理;
D O I
:
10.13926/j.cnki.apps.2010.01.015
中图分类号
:
S436.418 [辣椒病虫害];
学科分类号
:
090401 ;
090402 ;
摘要
:
本研究从菌株内生定殖、促生、抑制和诱导防御酶活性4方面探讨了红树内生细菌RS261菌株防治辣椒疫病的机理。结果表明,该菌株能进入辣椒等多种陆生植物体内定殖,在辣椒体内的定殖时间达26d以上,且对辣椒生长表现有明显的促进作用;抑制作用测定发现,RS261能够分泌产生抗菌物质抑制辣椒疫霉菌丝的生长和游动孢子囊的形成;辣椒体内丙二醛(MDA)含量及防御性酶活测定结果显示,经过RS261培养液处理后,辣椒苗体内丙二醛(MDA)含量和超氧化歧化酶(SOD)、过氧化物酶(POD)以及过氧化氢酶(CAT)的活性等均较仅接种疫霉病菌的处理低,但可显著诱导辣椒体内苯丙氨酸解氨酶(PAL)的活性。
引用
收藏
页码:74 / 80
页数:7
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[J].
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论文数:
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