Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University , Jinan, P.R. China.
Plant Signal Behav. 2020 Dec 1;15(12):1815980. doi: 10.1080/15592324.2020.1815980. Epub 2020 Aug 31.
Nitrate transporter 2.5 (NRT2.5) was originally characterized as the transporter for nitrogen (N) limitation. In is expressed mainly under extremely low NO and N starvation conditions, and this must work in conjunction with NAR2.1. is expressed both in the roots and leaves in , poplars, tea trees and cassava. This is also expressed in the seeds of and wheat. In wheat, is expressed in the embryo and shell and plays a role in the accumulation of NO in the seeds. In maize, this is also expressed in silk, cobs and tassel husk leaves. In rice, (also known as ) may help the species to remove NO from the roots to shoots. In addition, may interact with and other transcription factors and participate in the transmission of NO signals. The present review summarizes the functions of NRT2.5 in different plant species, which may help plant breeders and molecular biologists to improve crop yield. NRT, Nitrate transporter; NUE, nitrogen use efficiency; PTR, peptide transporter; NPF, nitrate peptide transporter family; CLC, chloride channel; LAC1/SLAH, slow anion channel-associated 1 homolog 3; LATS, low-affinity transporter systems; HATS, high-affinity transport systems; NNP, nitrate-nitrite-porter; MFS, major facilitator superfamily.
硝酸盐转运蛋白 2.5（NRT2.5）最初被描述为氮（N）限制的转运蛋白。在中，主要在极低的 NO 和 N 饥饿条件下表达，这必须与 NAR2.1 协同工作。在中，和在根和叶中表达，在杨树、茶树和木薯中也是如此。这也在和小麦的种子中表达。在小麦中，在胚胎和壳中表达，在种子中 NO 的积累中发挥作用。在玉米中，这也在丝、玉米穗和玉米须叶中表达。在水稻中，（也称为）可能有助于该物种将 NO 从根部转移到地上部分。此外，可能与和其他转录因子相互作用，并参与 NO 信号的传递。本综述总结了 NRT2.5 在不同植物物种中的功能，这可能有助于植物育种家和分子生物学家提高作物产量。NRT，硝酸盐转运蛋白；NUE，氮利用效率；PTR，肽转运蛋白；NPF，硝酸盐肽转运蛋白家族；CLC，氯离子通道；LAC1/SLAH，慢阴离子通道相关 1 同源物 3；LATS，低亲和力转运系统；HATS，高亲和力转运系统；NNP，硝酸盐-亚硝酸盐-转运蛋白；MFS，主要易化剂超家族。
