Genome-Wide Identification, Expansion, Evolution, and Expression Analysis Reveals ABCB Genes Important for Secondary Cell Wall Development in Moso Bamboo (Phyllostachys edulis)

The ATP-binding cassette subfamily B (ABCB) is an important transporter family, and many members are well known for their auxin transport function. However, reports on the function of the ABCB genes during Moso bamboo development are few. In this study, we identified and characterized 37 PhABCB gene...

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Bibliographic Details
Published in:Agronomy (Basel) 2023-07, Vol.13 (7), p.1828
Main Authors: Que, Feng, Zhu, Yaqi, Liu, Qingnan, Wei, Qiang, Ramakrishnan, Muthusamy
Format: Article
Language:English
Subjects:
ABCB gene family
Auxins
Bamboo
Cell division
Cell walls
Developmental stages
Evolution
Evolutionary genetics
gene duplication
Gene expression
Genes
Genomes
Moso bamboo
Phyllostachys edulis
Phylogenetics
Proteins
secondary cell wall
Software
Subgroups
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Summary:The ATP-binding cassette subfamily B (ABCB) is an important transporter family, and many members are well known for their auxin transport function. However, reports on the function of the ABCB genes during Moso bamboo development are few. In this study, we identified and characterized 37 PhABCB genes in Moso bamboo and classified them into five subgroups, Ⅰ–Ⅴ. We further observed gene family expansion and gene loss events during the evolution of the PhABCB gene family. It was found that the expansion of the PhABCB family was mainly attributed to the whole-genome duplication and DNA-transposed duplication models. Gene co-expression analysis and quantitative real-time PCR revealed that several PhABCB genes may be involved in the development of the secondary cell wall (SCW) during the rapid growth of Moso bamboo. Through examining their expression in different parts of the bamboo internode where the cell walls exhibited different developmental stages, the roles of eight candidate PhABCBs in the SCW development were further characterized. Of the eight PhABCB genes, PhABCB7, PhABCB11, PhABCB14, and PhABCB21 may be involved in the SCW biogenesis in Moso bamboo. This study provides the basis for discovering the potential role of PhABCB genes in Moso bamboo cell wall development; further studies are needed to elucidate how these PhABCBs function in SCW development by regulating the polar transport of auxin.
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy13071828