Genome-Wide Analysis of the Lateral Organ Boundaries Domain Gene Family in Brassica Napus.

Genes
Tao XieYouping Wang

Abstract

The plant specific LATERAL ORGAN BOUNDARIES (LOB)-domain (LBD) proteins belong to a family of transcription factors that play important roles in plant growth and development, as well as in responses to various stresses. However, a comprehensive study of LBDs in Brassica napus has not yet been reported. In the present study, 126 BnLBD genes were identified in B. napus genome using bioinformatics analyses. The 126 BnLBDs were phylogenetically classified into two groups and nine subgroups. Evolutionary analysis indicated that whole genome duplication (WGD) and segmental duplication played important roles in the expansion of the BnLBD gene family. On the basis of the RNA-seq analyses, we identified BnLBD genes with tissue or developmental specific expression patterns. Through cis-acting element analysis and hormone treatment, we identified 19 BnLBD genes with putative functions in plant response to abscisic acid (ABA) treatment. This study provides a comprehensive understanding on the origin and evolutionary history of LBDs in B. napus, and will be helpful in further functional characterisation of BnLBDs.

References

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Methods Mentioned

BETA
RNA-seq
PCR

Software Mentioned

TBtools
HMMER
Amazing Super Circos Systeny Plotter
MCScanX
ProtComp
MEGA
Plant
KaKs Calculator
Map
MEME

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