title: Genome-Wide Identification of R2R3-MYB Genes and Expression Analyses During Abiotic Stress in Gossypium raimondii.
abstract: The R2R3-MYB is one of the largest families of transcription factors, which have been implicated in multiple biological processes. There is great diversity in the number of R2R3-MYB genes in different plants. However, there is no report on genome-wide characterization of this gene family in cotton. In the present study, a total of 205 putative R2R3-MYB genes were identified in cotton D genome (Gossypium raimondii), that are much larger than that found in other cash crops with fully sequenced genomes. These GrMYBs were classified into 13 groups with the R2R3-MYB genes from Arabidopsis and rice. The amino acid motifs and phylogenetic tree were predicted and analyzed. The sequences of GrMYBs were distributed across 13 chromosomes at various densities. The results showed that the expansion of the G. Raimondii R2R3-MYB family was mainly attributable to whole genome duplication and segmental duplication. Moreover, the expression pattern of 52 selected GrMYBs and 46 GaMYBs were tested in roots and leaves under different abiotic stress conditions. The results revealed that the MYB genes in cotton were differentially expressed under salt and drought stress treatment. Our results will be useful for determining the precise role of the MYB genes during stress responses with crop improvement.
authors.affiliation: Department of Biology, East Carolina University, Greenville, NC 27858, United States of America.|Department of Agronomy, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
authors.forename: Qiuling
authors.initials: Q
authors.lastname: He
authors.affiliation: Cotton Incorporated, Cary, NC 27513, USA.
authors.forename: Don C
authors.initials: DC
authors.lastname: Jones
authors.affiliation: Department of Agronomy, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.affiliation: Department of Biology, East Carolina University, Greenville, NC 27858, United States of America.
authors.forename: Fuliang
authors.initials: F
authors.lastname: Xie
authors.affiliation: Department of Biology, East Carolina University, Greenville, NC 27858, United States of America.
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
authors.affiliation: Department of Biology, East Carolina University, Greenville, NC 27858, United States of America.|Henan Institute of Science and Technology, Xinxiang, Henan 453003, China.
authors.forename: Runrun
authors.initials: R
authors.lastname: Sun
authors.affiliation: Henan Institute of Science and Technology, Xinxiang, Henan 453003, China.
authors.forename: Qinglian
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Department of Agronomy, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
authors.forename: Shuijin
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Department of Biology, East Carolina University, Greenville, NC 27858, United States of America.
authors.forename: Baohong
authors.initials: B
authors.lastname: Zhang
mesh_terms: D055864:Droughts; D020440:Gene Duplication; D015870:Gene Expression; D018506:Gene Expression Regulation, Plant; D020570:Genes, myb; D018745:Genome, Plant; D003368:Gossypium / Q000235:genetics* / Q000254:growth & development*; D005810:Multigene Family; D010802:Phylogeny; D010940:Plant Proteins / Q000235:genetics*; D054712:Salinity; D056916:Segmental Duplications, Genomic; D020539:Sequence Analysis, Protein; D013312:Stress, Physiological
chemical_list: D010940:Plant Proteins