Genome-wide analysis of HAK/KUP/KT potassium transporter genes in banana (Musa acuminata L.) and their tissue-specific expression profiles under potassium stress

Potassium is one of the most essential inorganic cations for plant growth and development. The high affinity K + (HAK)/K + uptake (KUP)/K + transporter (KT) family plays essential roles in the regulation of cellular K + levels and the maintenance of osmotic balance. However, the roles of these genes...

Full description

Saved in:
Bibliographic Details
Published in:Plant growth regulation 2022-05, Vol.97 (1), p.51-60
Main Authors: Liu, Siwen, Wu, Bangting, Xie, Yanling, Zheng, Sijun, Xie, Jianghui, Wang, Wei, Xiang, Dandan, Li, Chunyu
Format: Article
Language:English
Subjects:
Agriculture
Bananas
Biomedical and Life Sciences
Cations
Fruits
Functional analysis
Genes
Genomes
Life Sciences
Musa acuminata
Original Paper
Phylogeny
Plant Anatomy/Development
Plant growth
Plant Physiology
Plant Sciences
Potassium
Potassium transporter
Transcriptomes
Yeasts
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Potassium is one of the most essential inorganic cations for plant growth and development. The high affinity K + (HAK)/K + uptake (KUP)/K + transporter (KT) family plays essential roles in the regulation of cellular K + levels and the maintenance of osmotic balance. However, the roles of these genes in the responses of bananas to low-potassium stress are unclear. In this study, 24 HAK/KUP/KT (MaHAK) genes were identified from banana. These genes were further classified into four groups based on phylogenetic analysis, gene structure and conserved domain analysis. Segmental duplication events played an important role in the expansion of the MaHAK gene family. Transcriptome analysis revealed the expression patterns of MaHAKs in various tissues under different K + conditions. MaHAK14b was upregulated under both short- and long-term K + -deficient conditions, suggesting that it plays crucial roles in K + uptake at low K + concentrations. Furthermore, MaHAK14b mediated K + uptake when it was heterologously expressed in the yeast mutant R5421 on low K + medium. Collectively, these findings provide a foundation for further functional analysis of MaHAK genes, which may be used to improve potassium stress resistance in bananas.
ISSN:0167-6903
1573-5087
DOI:10.1007/s10725-021-00793-7