Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang 233100, China.
State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
Int J Mol Sci. 2023 Jan 26;24(3):2437. doi: 10.3390/ijms24032437.
() encodes a protein localized to the endoplasmic reticulum (ER) and cell wall. This gene plays a key role in responding to phosphate (Pi) deprivation, especially in remodeling the root system architecture (RSA). An identification and expression analysis of the family in rice () has been previously reported, and , functioning in Pi uptake and translocation, is required for the normal growth and development of rice. However, the role of , one of the five members of this family in rice, in response to Pi deficiency and/or in the regulation of plant growth and development is unknown. Therefore, in this study, the roles of in these processes were investigated, and some functions were found to differ between and . was found to be induced in the leaf blades, leaf sheaths, and roots under Pi deprivation. overexpression strongly inhibited the growth and development of the rice but did not affect the Pi homeostasis of the plant. However, mutants improved RSA and Pi utilization, and they exhibited a higher tolerance to low Pi stress in rice. The agronomic traits of the mutants, such as 1000-grain weight and seed length, were stimulated under Pi-sufficient conditions, indicating that plays roles different from those of during plant growth and development, as well as in the maintenance of the Pi status of rice.
() 编码一种定位于内质网 (ER) 和细胞壁的蛋白质。该基因在响应磷酸盐 (Pi) 缺乏方面起着关键作用，特别是在重塑根系结构 (RSA) 方面。先前已经报道了水稻 () 中 家族的鉴定和表达分析， 和 ，在 Pi 吸收和转运中起作用，是水稻正常生长和发育所必需的。然而，该家族的五个成员之一 ，在响应 Pi 缺乏和/或在植物生长和发育的调节中的作用尚不清楚。因此，在本研究中，研究了 在这些过程中的作用，发现 和 之间的一些功能存在差异。 在 Pi 缺乏下，叶片、叶鞘和根中诱导 。 过表达强烈抑制水稻的生长和发育，但不影响植物的 Pi 稳态。然而， 突变体改善了 RSA 和 Pi 利用，并且在水稻中表现出对低 Pi 胁迫更高的耐受性。 在 Pi 充足条件下， 突变体的农艺性状，如千粒重和种子长度，受到刺激，表明 在植物生长和发育以及水稻 Pi 状态的维持中发挥的作用不同于 在这些过程中的作用。
