Genome-wide identification and characterization of FAD family genes in barley

被引:1
|
作者
Cao, Tingting [1 ]
Du, Qingwei [2 ]
Ge, Rongchao [1 ]
Li, Ruifen [2 ]
机构
[1] Hebei Normal Univ, Coll Life Sci, Shijiazhuang, Hebei, Peoples R China
[2] Beijing Acad Agr & Forestry Sci, Inst Biotechnol, Beijing, Peoples R China
来源
PEERJ | 2024年 / 12卷
关键词
FAD; Barley; Gene family; Gene expression; Subcellular localization; FATTY-ACID DESATURASE; EXPRESSION; RESISTANCE; PROMOTER; SUPPRESSION; NETWORKS; RICE;
D O I
10.7717/peerj.16812
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Fatty acid desaturases (FADs) play pivotal roles in determining plant stress tolerance. Barley is the most salt-tolerant cereal crop. In this study, we performed genome-wide identification and characterization analysis of the FAD gene family in barley (Hordeum vulgare). A total of 24 HvFADs were identified and divided into four subfamilies based on their amino acid sequence similarity. HvFADs unevenly distributed on six of seven barley chromosomes, and three clusters of HvFADs mainly occurred on the chromosome 2, 3 and 6. Segmental duplication events were found to be a main cause for the HvFAD gene family expansion. The same HvFAD subfamily showed the relatively consistent exon-intron composition and conserved motifs of HvFADs. Cis-element analysis in HvFAD promoters indicated that the expression of HvFADs may be subject to complex regulation, especially stress-responsive elements that may involve in saline-alkaline stress response. Combined transcriptomic data with quantitative experiments, at least five HvFADs highly expressed in roots under salt or alkali treatment, suggesting they may participate in saline or alkaline tolerance in barley. This study provides novel and valuable insights for underlying salt/alkalitolerant mechanisms in barley.
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页数:20
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