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首页> 外文期刊>Trends in Plant Science >Uptake, allocation and signaling of nitrate
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Uptake, allocation and signaling of nitrate

机译:硝酸盐的吸收,分配和信号传递

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摘要

Plants need to acquire nitrogen (N) efficiently from the soil for growth. Nitrate is one of the major N sources for higher plants. Therefore, nitrate uptake and allocation are key factors in efficient N utilization. Membrane-bound transporters are required for nitrate uptake from the soil and for the inter- and intracellular movement of nitrate inside the plants. Four gene families, nitrate transporter 1/peptide transporter (NRT1/PTR), NRT2, chloride channel (CLC), and slow anion channel-associated 1 homolog 3 (SLAC1/SLAH), are involved in nitrate uptake, allocation, and storage in higher plants. Recent studies of these transporters or channels have provided new insights into the molecular mechanisms of nitrate uptake and allocation. Interestingly, several of these transporters also play versatile roles in nitrate sensing, plant development, pathogen defense, and/or stress response.
机译:植物需要从土壤中高效地获取氮素以进行生长。硝酸盐是高等植物的主要氮源之一。因此,硝酸盐的吸收和分配是有效利用氮的关键因素。膜结合转运蛋白是从土壤吸收硝酸盐以及植物体内硝酸盐在细胞内和细胞内移动所必需的。硝酸盐吸收,分配和存储涉及四个基因家族:硝酸盐转运蛋白1 /肽转运蛋白(NRT1 / PTR),NRT2,氯离子通道(CLC)和慢阴离子通道相关的1同源物3(SLAC1 / SLAH)。高等植物。这些转运蛋白或通道的最新研究提供了对硝酸盐吸收和分配的分子机制的新见解。有趣的是,这些转运蛋白中的几种在硝酸盐感测,植物发育,病原体防御和/或胁迫反应中也起着多种作用。

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