Genome-wide identification and expression profiling of dehydrin gene family in Malus domestica.
The family of dehydrin genes has important roles in protecting higher plants against abiotic stress, such as drought, salinity and cold. However, knowledge about apple dehydrin gene family is limited. In the present study, we used a bioinformatics approach to identify members of that family in apple (Malus domestica). A total of 12 apple dehydrin genes (MdDHNs) were identified and located on various chromosomes. All putative proteins from those genes contained a typical K domain. Among 12 MdDHNs, nine were cloned and their expression patterns were investigated. Expression profiling indicated that the these nine dehydrin genes display differential expression patterns in various tissues. Moreover, transcript levels of some MdDHNs were up-regulated significantly under drought, low temperature, or ABA treatment, which indicated their important roles during stress adaptation. These results demonstrate that the apple dehydrin gene family may function in tissue development and plant stress responses.
State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
Dong
D
Liang
Hui
H
Xia
Shan
S
Wu
Fengwang
F
Ma
D000040:Abscisic Acid / Q000494:pharmacology; D000595:Amino Acid Sequence; D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics; D003080:Cold Temperature; D055864:Droughts; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D018745:Genome, Plant / Q000235:genetics*; D027845:Malus / Q000187:drug effects / Q000235:genetics* / Q000502:physiology; D008969:Molecular Sequence Data; D005810:Multigene Family; D009928:Organ Specificity / Q000187:drug effects / Q000235:genetics; D010802:Phylogeny; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D016415:Sequence Alignment; D013312:Stress, Physiological / Q000187:drug effects / Q000235:genetics
D010940:Plant Proteins; C070556:dehydrin proteins, plant; D000040:Abscisic Acid