期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 98, 期 26, 页码 15366-15371出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.251491698
关键词
-
The mutualistic symbiosis between flowering plants and arbuscular mycorrhizal fungi is extremely abundant in terrestrial ecosystems. In this symbiosis, obligately biotrophic fungi colonize the root of the host plants, which can benefit from these fungi by enhanced access to mineral nutrients in the soil, especially phosphorus. One of the main goals of research on this symbiosis is to find plant genes that control fungal development in the host plant. In this work, we show that mycorrhizal colonization is regulated by enod40, an early nodulin gene known to be involved in the nodule symbiosis of legumes with nitrogen-fixing bacteria. Medicago truncatula plants overexpressing enod40 exhibited stimulated mycorrhizal colonization in comparison with control plants. Overexpression of enod40 promoted fungal growth in the root cortex and increased the frequency of arbuscule formation. Transgenic lines with suppressed levels of enod40 transcripts, likely via a cosuppression phenomenon induced by the transgene, exhibited reduced mycorrhizal colonization. Hence, enod40 might be a plant regulatory gene involved in the control of the mycorrhizal symbiosis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据