Genome-wide characterization and expression profiling of NAC transcription factor genes under abiotic stresses in radish (Raphanus sativus L.)

Autor: Yang Xie, Everlyne M’mbone Muleke, Bernard Kinuthia Karanja, Yan Wang, Liwang Liu, Bashir Mohammed Jabir, Xianwen Zhu, Liang Xu, Wanwan Cheng
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: PeerJ, Vol 5, p e4172 (2017)
ISSN: 2167-8359
Popis: NAC (NAM, no apical meristem; ATAF,Arabidopsistranscription activation factor and CUC, cup-shaped cotyledon) proteins are among the largest transcription factor (TF) families playing fundamental biological processes, including cell expansion and differentiation, and hormone signaling in response to biotic and abiotic stresses. In this study, 172 RsNACs comprising 17 membrane-bound members were identified from the whole radish genome. In total, 98RsNACgenes were non-uniformly distributed across the nine radish chromosomes.In silicoanalysis revealed that expression patterns of severalNACgenes were tissue-specific such as a preferential expression in roots and leaves. In addition, 21 representativeNACgenes were selected to investigate their responses to heavy metals (HMs), salt, heat, drought and abscisic acid (ABA) stresses using real-time polymerase chain reaction (RT-qPCR). As a result, differential expressions among these genes were identified whereRsNAC023andRsNAC080genes responded positively to all stresses except ABA, whileRsNAC145responded more actively to salt, heat and drought stresses compared with other genes. The results provides more valuable information and robust candidate genes for future functional analysis for improving abiotic stress tolerances in radish.
Databáze: OpenAIRE