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Transcriptome profiling of Vitis amurensis, an extremely cold-tolerant Chinese wild Vitis species, reveals candidate genes and events that potentially connected to cold stress.
Xu, Weirong; Li, Ruimin; Zhang, Ningbo; Ma, Fuli; Jiao, Yuntong; Wang, Zhenping.
Afiliación
  • Xu W; School of Agronomy, Ningxia University, Yinchuan, 750021, Ningxia, People's Republic of China.
Plant Mol Biol ; 86(4-5): 527-41, 2014 Nov.
Article en En | MEDLINE | ID: mdl-25190283
Vitis amurensis Rupr. is an exceptional wild-growing Vitis (grape) species that can safely survive a wide range of cold conditions, but the underlying cold-adaptive mechanism associated with gene regulation is poorly investigated. We have analyzed the physiochemical and transcriptomic changes caused by cold stress in a cold-tolerant accession, 'Heilongjiang seedling', of Chinese wild V. amurensis. We statistically determined that a total of 6,850 cold-regulated transcripts were involved in cold regulation, including 3,676 up-regulated and 3,174 down-regulated transcripts. A global survey of messenger RNA revealed that skipped exon is the most prevalent form of alternative spicing event. Importantly, we found that the total splicing events increased with the prolonged cold stress. We also identified thirty-eight major TF families that were involved in cold regulation, some of which were previously unknown. Moreover, a large number of candidate pathways for the metabolism or biosynthesis of secondary metabolites were found to be regulated by cold, which is of potential importance in coordinating cold tolerance with growth and development. Several heat shock proteins and heat shock factors were also detected to be intensively cold-regulated. Furthermore, we validated the expression profiles of 16 candidates using qRT-PCR to further confirm the accuracy of the RNA-seq data. Our results provide a genome-wide view of the dynamic changes in the transcriptome of V. amurensis, in which it is evident that various structural and regulatory genes are crucial for cold tolerance/adaptation. Moreover, our robust dataset advances our knowledge of the genes involved in the complex regulatory networks of cold stress and leads to a better understanding of cold tolerance mechanisms in this extremely cold-tolerant Vitis species.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Estrés Fisiológico / Adaptación Fisiológica / Frío / Regulación de la Expresión Génica de las Plantas / Perfilación de la Expresión Génica / Vitis Tipo de estudio: Prognostic_studies Idioma: En Revista: Plant Mol Biol Asunto de la revista: BIOLOGIA MOLECULAR / BOTANICA Año: 2014 Tipo del documento: Article Pais de publicación: Países Bajos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Estrés Fisiológico / Adaptación Fisiológica / Frío / Regulación de la Expresión Génica de las Plantas / Perfilación de la Expresión Génica / Vitis Tipo de estudio: Prognostic_studies Idioma: En Revista: Plant Mol Biol Asunto de la revista: BIOLOGIA MOLECULAR / BOTANICA Año: 2014 Tipo del documento: Article Pais de publicación: Países Bajos