Genome-wide analysis and identification of HAK potassium transporter gene family in maize (Zea                      mays L.).
The high-affinity K(+) (HAK) transporter gene family constitutes the largest family that functions as potassium transporter in plant and is important for various cellular processes of plant life. In spite of their physiological importance, systematic analyses of ZmHAK genes have not yet been investigated. In this paper, we indicated the isolation and characterization of ZmHAK genes in whole-genome wide by using bioinformatics methods. A total of 27 members (ZmHAK1-ZmHAK27) of this family were identified in maize genome. ZmHAK genes were distributed in all the maize 10 chromosomes. These genes expanded in the maize genome partly due to tandem and segmental duplication events. Multiple alignment and motif display results revealed major maize ZmHAK proteins share all the three conserved domains. Phylogenetic analysis indicated ZmHAK family can be divided into six subfamilies. Putative cis-elements involved in Ca(2+) response, abiotic stress adaption, light and circadian rhythms regulation and seed development were observed in the promoters of ZmHAK genes. Expression data mining suggested maize ZmHAK genes have temporal and spatial expression pattern. In all, these results will provide molecular insights into the potassium transporter research in maize.
Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China. happyzzb@126.com
Zhongbao
Z
Zhang
Jiewei
J
Zhang
Yajuan
Y
Chen
Ruifen
R
Li
Hongzhi
H
Wang
Jianhua
J
Wei
D020816:Amino Acid Motifs; D027682:Cation Transport Proteins / Q000235:genetics*; D002874:Chromosome Mapping; D019295:Computational Biology; D020440:Gene Duplication; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D023061:Gene Order; D018745:Genome, Plant; D005810:Multigene Family; D010802:Phylogeny; D010940:Plant Proteins / Q000235:genetics*; D011188:Potassium / Q000378:metabolism; D012045:Regulatory Sequences, Nucleic Acid; D003313:Zea mays / Q000145:classification / Q000235:genetics*
D027682:Cation Transport Proteins; D010940:Plant Proteins; D011188:Potassium