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- Title
MeMYB26, a drought-responsive transcription factor in cassava (Manihot esculenta Crantz).
- Authors
Bin Wang; Xin Guo; Pingjuan Zhao; Wenbin Liao; Changying Zeng; Kai Li; Yuxun Zhou; Junhua Xiao; Mengbin Ruan; Ming Peng; Yang Bai; Ye Chen
- Abstract
Cassava (Manihot esculenta Crantz) is worldwide the sixth-largest food crop and highly drought resistant. The expression of the myeloblastosis (MYB) family protein MeMYB26 in cassava was previously reported to be significantly up-regulated under water deficit. To study the basic characterization, natural variations and potential functions of MeMYB26 for drought resistance in cassava, the protein was subjected to bioinformatics analysis, multiplex- PCR with next-generation sequencing and candidate association studies. The results indicated that MeMYB26 is a typical transcription factor, with two MYB DNA-binding and transcriptional activation domains. One stop-gained and five nonsynonymous variations in the genomic region of MeMYB26 were significantly associated with drought resistance traits. The results of the scale-free coexpression network showed that the MeMYB26 gene plays a critical role in plant stress resistance, growth and biomass development. It was concluded that MeMYB26 is a reliable candidate gene associated with drought tolerance and biomass storage in cassava.
- Subjects
CASSAVA; TRANSCRIPTION factors; FOOD crops; DROUGHT tolerance; POTENTIAL functions; GENES
- Publication
Crop Breeding & Applied Biotechnology, 2021, Vol 21, Issue 1, p1
- ISSN
1518-7853
- Publication type
Article
- DOI
10.1590/1984-70332021v21n1a4