Allelopathic substance in rice root exudates: Rediscovery of momilactone B as an allelochemical
Allelopathic substance in rice root exudates: Rediscovery of momilactone B as an allelochemical
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DOI：
10.1078/0176-1617-01188
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发表时间：
2004-03-01
影响因子：
4.3
通讯作者：
Kato-Noguchi, H
中科院分区：
文献类型：
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作者：
Kato-Noguchi, H
水稻化感作用的研究主要集中在水稻化感品系的选择和水稻化感物质的鉴定上。本文简要综述了水稻化感作用的最新研究进展，重点介绍了米内酯B作为化感物质的重新发现。许多水稻品种在田间和/或实验室条件下一起生长时，会抑制几种植物的生长。这些发现表明，水稻可能产生并释放化感化学物质到环境中。最近从水稻根系分泌物中分离出一种被认为能引起水稻生长抑制作用的化合物，通过光谱数据确定该抑制剂的化学结构为莫内酯B。此外，研究发现莫内酯B从水稻根系释放到邻近环境中，并且从水稻中释放的莫内酯B的水平可能足以引起邻近植物的生长抑制。这些结果表明，莫内酯B可能在水稻化感作用中起重要作用。
Much research on rice allelopathy has been directed toward the selection of allelopathic rice strains and the identification of allelochemicals in rice. This paper briefly summarizes recent progress in the rice allelopathy and focuses on rediscovery of momilactone B as an allelochemical. A large number of rice varieties were found to inhibit the growth of several plant species when grown together under field and/or laboratory conditions. These findings suggest that rice probably produces and releases allelochemical(s) into the environment. The putative compound causing the inhibitory effect of rice was recently isolated from rice root exudates, and the chemical structure of the inhibitor was determined by spectral data as momilactone B. In addition, it has been found that momilactone B is released from rice roots into the neighboring environment, and the release level of momilactone B from rice may be sufficient to cause growth inhibition of neighboring plants. These findings suggest that momilactone B may play an important role in rice allelopathy.