Genome-wide study of pineapple (Ananas comosusL.) bHLH transcription factors indicates that cryptochrome-interacting bHLH2 (AcCIB2) participates in flowering time regulation and abiotic stress response
文献类型： 外文期刊
作者： Aslam, Mohammad 1 ; Jakada, Bello Hassan 1 ; Fakher, Beenish 3 ; Greaves, Joseph G. 4 ; Niu, Xiaoping 1 ; Su, Zhenx 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Key Lab Genet Breeding & Multiple Utilizat Crops, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Minist Educ,Coll Life Sci,State Key Lab Ecol Pest, Fuzhou 350002, Fujian, Peoples R China
2.Guangxi Univ, Coll Agr, Guangxi Key Lab Sugarcane Biol, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning 530004, Guangxi, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Agr, Fuzhou 350002, Fujian, Peoples R China
4.Fujian Agr & Forestry Univ, Coll Plant Protect, Fuzhou 350002, Fujian, Peoples R China
5.Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou 350002, Fujian, Peoples R China
6.Guangxi Acad Agr Sci, Hort Res Inst, Nanning Invest Stn South Subtrop Fruit Trees, Minist Agr, Nanning 530007, Peoples R China
关键词： bHLH; CIB2; Flowering time; Abiotic stress; Pineapple
期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）
ISSN： 1471-2164
年卷期： 2020 年 21 卷 1 期
页码：
收录情况： SCI
摘要： Background Transcription factors (TFs) are essential regulators of growth and development in eukaryotes. Basic-helix-loop-helix (bHLHs) is one of the most significant TFs families involved in several critical regulatory functions. Cryptochrome-interacting bHLH (CIB) and cryptochromes form an extensive regulatory network to mediate a plethora of pathways. Although bHLHs regulate critical biological processes in plants, the information about pineapple bHLHs remains unexplored. Results Here, we identified a total of 121 bHLH proteins in the pineapple genome. The identified genes were renamed based on the ascending order of their gene ID and classified into 18 subgroups by phylogenetic analysis. We found that bHLH genes are expressed in different organs and stages of pineapple development. Furthermore, by the ectopic expression ofAcCIB2 inArabidopsisand complementation ofAtcib2mutant, we verified the involvement ofAcCIB2 in photomorphogenesis and abiotic stress response. Conclusions Our findings revealed thatAcCIB2 plays an essential role in flowering time regulation and abiotic stress response. The present study provides additional insights into the current knowledge of bHLH genes and suggests their potential role in various biological processes during pineapple development.
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