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- W2890978924 abstract "Potassium is an essential nutrient for plant growth and productivity of crops. K<sup>+</sup> transporters are important for K<sup>+</sup> uptake and transport in plants. However, information on the function of K<sup>+</sup> transporters and K<sup>+</sup> channels in cotton is limited. The KT/KUP/HAK protein family is essential for a variety of physiological processes in plants, including nutrient acquisition and regulation of development. This study, identified a K<sup>+</sup> transporter gene, <i>GhKT2,</i> expressed in the roots of cotton (<i>Gossypium hirsutum</i>) cv. Liaomian17. The deduced transcript of <i>GhKT2</i> is highly homologous to Cluster II of KUP/HAK/KT K<sup>+</sup> transporters and is predicted to contain 11 transmembrane domains. <i>GhKT2</i> has been localized to the plasma membrane, and its transcripts were detected in roots, stems, leaves and shoot apices of cotton seedlings. Consistently, b-glucuronidase (GUS) expression driven by the GhKT2 promoter could be detected in roots, mesophyll cells, and leaf veins in transgenic <i>Arabidopsis</i>. In addition, the expression of <i>GhKT2</i> was induced by low K<sup>+</sup> stress in cotton roots and <i>pGhKT2</i>::GUS-transgenic <i>Arabidopsis</i> seedlings. The <i>GhKT2</i>-overexpression <i>Arabidopsis</i> lines plants were larger and showed greater K<sup>+</sup> accumulation than the wild type (WT) regardless of K<sup>+</sup> concentration supplied. The net K<sup>+</sup> influx rate, measured by the noninvasive micro-test technique, in root meristem zone of <i>GhKT2</i>-transgenic <i>Arabidopsis</i> lines was significantly greater than that of WT. Taken together, this evidence indicates that GhKT2 may participate in K<sup>+</sup> acquisition from low or high external K<sup>+</sup>, as well as K<sup>+</sup> transport and distribution in plants." @default.
- W2890978924 created "2018-09-27" @default.
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- W2890978924 date "2018-01-01" @default.
- W2890978924 modified "2023-09-24" @default.
- W2890978924 title "GhKT2: a novel K$lt;sup$gt;+$lt;/sup$gt; transporter gene in cotton (Gossypium hirsutum)" @default.
- W2890978924 doi "https://doi.org/10.15302/j-fase-2017170" @default.
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