Characterization and Expression of KT/HAK/KUP Transporter Family Genes in Willow under Potassium Deficiency, Drought, and Salt Stresses.

ABSTRACT: The K⁺ transporter/high-affinity K⁺/K⁺ uptake (KT/HAK/KUP) transporters dominate K⁺ uptake, transport, and allocation that play a pivotal role in mineral homeostasis and plant adaptation to adverse abiotic stresses. However, molecular mechanisms towards K⁺ nutrition in forest trees are extremely rare, especially in willow. In this study, we identified 22 KT/HAK/KUP transporter genes in purple osier willow (designated as SpuHAK1 to SpuHAK22) and examined their expression under K⁺ deficiency, drought, and salt stress conditions. Both transcriptomic and quantitative real-time PCR (qRT-PCR) analyses demonstrated that SpuHAKs were predominantly expressed in stems, and the expression levels of SpuHAK1,

SUBMITTER: Liang M 

PROVIDER: S-EPMC7303730 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature