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首页> 外文期刊>Plant Physiology and Biochemistry >Biosynthetic considerations could assist the structure elucidation of host plant produced rhizosphere signalling compounds (strigolactones) for arbuscular mycorrhizal fungi and parasitic plants
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Biosynthetic considerations could assist the structure elucidation of host plant produced rhizosphere signalling compounds (strigolactones) for arbuscular mycorrhizal fungi and parasitic plants

机译：生物合成方面的考虑可能有助于阐明宿主植物产生的用于丛枝菌根真菌和寄生植物的根际信号化合物（松香内酯）的结构

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Parasitic plants cause devastating losses to crop yields in several parts of the world. The root parasites, Striga and Orobanche species, use chemical signalling molecules that are exuded by the roots of plants in extremely low concentrations, and that can induce germination of the seeds of these parasites, to detect the vicinity of a suitable host. The majority of the so far identified germination stimulants belong to the strigolactones. It was recently discovered that this class of compounds can also induce hyphal branching in the symbiotic arbuscular mycorrhizal fungi, a process involved in root colonisation. The elucidation of the structure of new strigolactones is hindered by their low abundance and instability. In the present paper, we have used existing knowledge on the structure of strigolactones and combined it with recently obtained insight in the biosynthetic origin of these signalling compounds. This enabled us to postulate structures for strigolactones that have been isolated but for which so far the structure has not been elucidated, but also to propose structures of strigolactones that may be discovered in the future. Considering the strongly increased importance of the strigolactones, we expect that more groups will look for these compounds and also in systems so far not exploited. This could lead to the discovery of new strigolactones for which we expect the present biogenetic considerations will facilitate identification and structure elucidation. (c) 2008 Elsevier Masson SAS. All rights reserved.
机译：寄生植物在世界一些地区给农作物的产量造成毁灭性的损失。根寄生虫（Striga和Orobanche物种）使用极低浓度的植物根系分泌的化学信号分子，并可以诱导这些寄生虫种子发芽，以检测合适宿主的附近。迄今为止，大多数鉴定出的发芽刺激剂均属于松香内酯。最近发现，这类化合物还可以在共生丛枝菌根真菌中诱导菌丝分支，这是根定居的过程。由于其低丰度和不稳定性，阻碍了对新的内酯内酯结构的阐明。在本文中，我们利用了有关松果内酯结构的现有知识，并将其与最近获得的有关这些信号传导化合物生物合成来源的见解相结合。这使我们能够提出已被隔离但迄今尚未阐明的松果内酯的结构，并且提出了将来可能发现的松果内酯的结构。考虑到荆芥内酯的重要性日益增加，我们预计会有更多的团体寻找这些化合物，并且在迄今尚未开发的系统中。这可能会导致发现新的迷迭香内酯，我们希望其目前的生物遗传学考虑因素将有助于鉴定和结构阐明。 （c）2008 Elsevier Masson SAS。版权所有。

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