Characterization of Brassinazole resistant (BZR ) gene family and stress induced expression in Eucalyptus grandis

Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology
Chunjie FanBingshan Zeng

Abstract

Brassinosteroids (BRs) are a group of plant hormones which play a pivotal role in modulating cell elongation, stress responses, vascular differentiation and senescence. In response to BRs, BRASSINAZOLE-RESISTANT (BZR) transcription factors (TFs) accumulate in the nucleus, where they modulate thousands of target genes and coordinate many biological processes, especially in regulating defense against biotic and abiotic stresses. In this study, 6 BZR TFs of Eucalyptus grandis (EgrBZR) from a genome-wide survey were characterized by sequence analysis and expression profiling against several abiotic stresses. The results showed that BZR gene family in Eucalyptus was slightly smaller compared to Populus and Arabidopsis, but all phylogenetic groups were represented. Various systematic in silico analysis of these TFs validated the basic properties of BZRs, whereas comparative studies showed a high degree of similarity with recognized BZRs of other plant species. In the organ-specific expression analyses, 4 EgrBZRs were expressed in vascular tissue indicating their possible functions in wood formation. Meanwhile, almost all EgrBZR genes showed differential transcript abundance levels in response to exogenously applied BR, MeJA, and SA, ...Continue Reading

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Citations

Jun 9, 2019·International Journal of Molecular Sciences·Yujiao WangChunjie Fan
Feb 8, 2020·International Journal of Molecular Sciences·Fuai SunFengling Fu
Oct 23, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Baopeng DingLiulin Li

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Methods Mentioned

BETA
ChIP
PCR

Software Mentioned

Cobalt
MEME
mPLoc
STRING
MapChart
PlantCARE
Primer3
Plant

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