Rothamsted Research, Plant Science Department, West Common, Harpenden, Hertfordshire, UK.
Mol Plant. 2010 Mar;3(2):374-89. doi: 10.1093/mp/ssp119. Epub 2010 Jan 29.
Sulfate uptake and distribution in plants are managed by the differential expression of a family of transporters, developmentally, spatially, and in response to sulfur nutrition. Elucidation of the signaling pathways involved requires a knowledge of the component parts and their interactions. Here, the expression patterns of the full complement of sulfate transporters in wheat, as influenced by development and sulfur nutrition, are described. The 10 wheat sulfate transporters characterized here are compared to the gene families for both rice and Brachypodium, for whom full genome information is available. Expression is reported in young seedlings with a focus on roles in uptake from nutrient solution and differential expression in relation to sulfate deprivation. In addition, patterns of expression in all organs at the grain filling stage are reported and indicate differential responses to nutritional signals of the individual transporters in specific tissues and an overall coordination of uptake, storage, and remobilization to deliver sulfur to the developing grain.
硫酸盐在植物中的摄取和分布是通过一系列转运蛋白的差异表达来调控的，这些转运蛋白在发育过程中、在不同组织部位以及响应硫营养状况方面的表达水平存在差异。阐明涉及的信号通路需要了解其组成部分及其相互作用。本文描述了受发育和硫营养状况影响的小麦中完整硫酸盐转运蛋白家族的表达模式。本文还将 10 种小麦硫酸盐转运蛋白与水稻和短柄草的基因家族进行了比较，因为后两者的全基因组信息是可用的。本文重点研究了幼苗从营养液中摄取硫酸盐的作用以及与硫酸盐缺乏相关的差异表达。此外，本文还报告了在灌浆期所有器官中的表达模式，表明了在特定组织中单个转运蛋白对营养信号的不同响应以及摄取、储存和再利用以向发育中的籽粒输送硫的整体协调性。
