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首页> 外文期刊>Journal of Experimental Botany >Microarray expression profiling of Arabidopsis thaliana L. in response to allelochemicals identified in buckwheat
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Microarray expression profiling of Arabidopsis thaliana L. in response to allelochemicals identified in buckwheat

机译：拟南芥对荞麦中鉴定的化感物质的响应的微阵列表达谱

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Buckwheat (Fagopyrum esculentum Moench) is an important annual plant cultivated for grain or as a cover crop in many countries, and it is also used for weed suppression in agro-economic systems through its release of allelochemicals. Little is known, however, concerning the mode of action of allelochemicals or plant defence response against them. Here, microarrays revealed 94, 85, and 28 genes with significantly higher expression after 6 h of exposure to the allelochemicals fagomine, gallic acid, and rutin, respectively, compared with controls. These induced genes fell into different functional categories, mainly: interaction with the environment; subcellular localization; protein with binding function or cofactor requirement; cell rescue; defence and virulence; and metabolism. Consistent with these results, plant response to allelochemicals was similar to that for pathogens (biotic stress) or herbicides (abiotic stress), which increase the concentration of reactive oxygen species (ROS; with consequent oxidative stress) in plant cells. The data indicate that allelochemicals might have relevant functions, at least in part, in the cross-talk between biotic and abiotic stress signalling because they generate ROS, which has been proposed as a key shared process between these two stress mechanisms.
机译：荞麦（Fagopyrum esculentum Moench）是许多国家种植的重要一年生植物，用于谷物或作为覆盖作物，并且还通过释放化感物质而在农业经济系统中用于抑制杂草。然而，关于化感物质的作用方式或针对它们的植物防御反应知之甚少。在这里，与对照组相比，微阵列显示94、85和28个基因分别在暴露于化感物质烟酰胺，没食子酸和芦丁6 h后具有明显更高的表达。这些诱导基因分为不同的功能类别，主要是：与环境的相互作用；与环境的相互作用。亚细胞定位具有结合功能或辅因子要求的蛋白质；细胞救援；防御和毒力；和新陈代谢。与这些结果一致，植物对化感物质的反应类似于病原体（生物胁迫）或除草剂（非生物胁迫）的反应，这会增加植物细胞中活性氧（ROS；随之产生的氧化胁迫）的浓度。数据表明，化感物质可能至少在生物和非生物应激信号之间的相互作用中具有相关功能，因为它们会产生ROS，这被认为是这两种应激机制之间的关键共享过程。

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