Identification and expression analysis of the DREB transcription factor family in pineapple ( Ananas comosus (L.) Merr.)

PeerJ

article

Mengnan Chai¹  Han Cheng¹  Maokai Yan⁴  SVGN Priyadarshani¹  Man Zhang¹  Qing He¹  Youmei Huang¹  Fangqian Chen¹  Liping Liu⁵  Xiaoyi Huang⁵  Linyi Lai¹  Huihuang Chen¹  Hanyang Cai¹  Yuan Qin¹ 

[1] State Key Lab of Ecological Pest Control for Fujian and Taiwan Crops;Key Lab of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education;Fujian Provincial Key Lab of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province;State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Lab of Sugarcane Biology, College of Agriculture, Guangxi University, Nanning, Guangxi Province;College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province

关键词: Pineapple;    DREB transcription factors;    Phylogenetic analysis;    Expression profiles;   

DOI  :  10.7717/peerj.9006

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Background Dehydration responsive element-binding (DREB) transcription factors play a crucial role in plant growth, development and stress responses. Although DREB genes have been characterized in many plant species, genome-wide identification of the DREB gene family has not yet been reported in pineapple (Ananas comosus (L.) Merr.). Results Using comprehensive genome-wide screening, we identified 20 AcoDREB genes on 14 chromosomes. These were categorized into five subgroups. AcoDREBs within a group had similar gene structures and domain compositions. Using gene structure analysis, we showed that most AcoDREB genes (75%) lacked introns, and that the promoter regions of all 20 AcoDREB genes had at least one stress response-related cis-element. We identified four genes with high expression levels and six genes with low expression levels in all analyzed tissues. We detected expression changes under abiotic stress for eight selected AcoDREB genes. Conclusions This report presents the first genome-wide analysis of the DREB transcription factor family in pineapple. Our results provide preliminary data for future functional analysis of AcoDREB genes in pineapple, and useful information for developing new pineapple varieties with key agronomic traits such as stress tolerance.

【 授权许可】

CC BY