SAUR蛋白作为植物生长中激素和环境信号的效应因子
SAUR Proteins as Effectors of Hormonal and Environmental Signals in Plant Growth.
作者信息
Ren Hong, Gray William M
机构信息
Department of Plant Biology, University of Minnesota, 250 Biological Sciences Center, 1445 Gortner Avenue, St. Paul, MN 55108, USA.
Department of Plant Biology, University of Minnesota, 250 Biological Sciences Center, 1445 Gortner Avenue, St. Paul, MN 55108, USA.
出版信息
Mol Plant. 2015 Aug;8(8):1153-64. doi: 10.1016/j.molp.2015.05.003. Epub 2015 May 15.
The plant hormone auxin regulates numerous aspects of plant growth and development. Early auxin response genes mediate its genomic effects on plant growth and development. Discovered in 1987, small auxin up RNAs (SAURs) are the largest family of early auxin response genes. SAUR functions have remained elusive, however, presumably due to extensive genetic redundancy. However, recent molecular, genetic, biochemical, and genomic studies have implicated SAURs in the regulation of a wide range of cellular, physiological, and developmental processes. Recently, crucial mechanistic insight into SAUR function was provided by the demonstration that SAURs inhibit PP2C.D phosphatases to activate plasma membrane (PM) H(+)-ATPases and promote cell expansion. In addition to auxin, several other hormones and environmental factors also regulate SAUR gene expression. We propose that SAURs are key effector outputs of hormonal and environmental signals that regulate plant growth and development.
植物激素生长素调节植物生长和发育的多个方面。早期生长素响应基因介导其对植物生长和发育的基因组效应。小生长素上调RNA（SAURs）于1987年被发现，是早期生长素响应基因中最大的家族。然而，SAUR的功能仍然难以捉摸，大概是由于广泛的基因冗余。不过，最近的分子、遗传、生化和基因组研究表明，SAURs参与了广泛的细胞、生理和发育过程的调控。最近，通过证明SAURs抑制PP2C.D磷酸酶以激活质膜（PM）H(+) -ATP酶并促进细胞扩张，对SAUR功能有了关键的机制性认识。除了生长素外，其他几种激素和环境因素也调节SAUR基因表达。我们认为，SAURs是调节植物生长和发育的激素和环境信号的关键效应输出。
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