Systemic suppression of the shoot metabolism upon rice root nematode infection.

Systemic suppression of the shoot metabolism upon rice root nematode infection.
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DOI:
10.1371/journal.pone.0106858
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
De Meyer T
De Meyer T
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kyndt T;Denil S;Bauters L;Van Criekinge W;De Meyer T

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米氏Hirschmanniella oryzae是水稻淹水栽培系统中最常见的植物寄生线虫。这些迁徙的动物穿透植物的根,以根细胞为食,形成巨大的空洞,导致广泛的根坏死和腐烂。本研究的目的是研究该线虫对水稻根系侵染的全身反应。在接种后3天和7天对水稻植株地上部分进行RNA测序。数据显示,植物茎部的初级代谢发生了显著变化,例如叶绿素生物合成、油菜素内酯途径和氨基酸产生普遍受到抑制。在次生代谢中,我们检测到类异戊二烯和莽草酸途径的抑制。这些分子变化可能对水稻的生长和产量产生巨大影响,并可能改变它们对地上病原体和害虫的易感性。
Hirschmanniella oryzae is the most common plant-parasitic nematode in flooded rice cultivation systems. These migratory animals penetrate the plant roots and feed on the root cells, creating large cavities, extensive root necrosis and rotting. The objective of this study was to investigate the systemic response of the rice plant upon root infection by this nematode. RNA sequencing was applied on the above-ground parts of the rice plants at 3 and 7 days post inoculation. The data revealed significant modifications in the primary metabolism of the plant shoot, with a general suppression of for instance chlorophyll biosynthesis, the brassinosteroid pathway, and amino acid production. In the secondary metabolism, we detected a repression of the isoprenoid and shikimate pathways. These molecular changes can have dramatic consequences for the growth and yield of the rice plants, and could potentially change their susceptibility to above-ground pathogens and pests.
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