Comparative transcriptomic analysis reveals gene expression associated with cold adaptation in the tea plant Camellia sinensis

BMC Genomics
Yeyun LiJeffrey L Bennetzen

Abstract

Low temperature restricts the planting range of all crops, but cold acclimation induces adaption to cold stress in many plants. Camellia sinensis, a perennial evergreen tree that is the source of tea, is mainly grown in warm areas. Camellia sinensis var. sinensis (CSS) has greater cold tolerance than Camellia sinensis var. assamica (CSA). To gain deep insight into the molecular mechanisms underlying cold adaptation, we investigated the physiological responses and transcriptome profiles by RNA-Seq in two tea varieties, cold resistant SCZ (classified as CSS) and cold susceptible YH9 (classified as CSA), during cold acclimation. Under freezing stress, lower relative electrical conductivity and higher chlorophyll fluorescence (Fv/Fm) values were detected in SCZ than in YH9 when subjected to freezing acclimation. During cold treatment, 6072 and 7749 DEGs were observed for SCZ and YH9, respectively. A total of 978 DEGs were common for both SCZ and YH9 during the entire cold acclimation process. DEGs were enriched in pathways of photosynthesis, hormone signal transduction, and transcriptional regulation of plant-pathogen interactions. Further analyses indicated that decreased expression of Lhca2 and higher expression of SnRK2.8 are co...Continue Reading

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Citations

Feb 6, 2020·International Journal of Molecular Sciences·Lingli WuXiaofeng Tan
Mar 5, 2021·Vavilovskiĭ Zhurnal Genetiki I Selekt︠s︡ii·L S SamarinaL S Malyukova
Mar 18, 2021·The Plant Journal : for Cell and Molecular Biology·Wei TongEnhua Xia

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Datasets Mentioned

BETA
PRJNA387105
CSA014553
SRP108833

Methods Mentioned

BETA
RNA-Seq

Software Mentioned

KEGG mapper
GOseq
Statistical Package for the Social Sciences ( SPSS )
Blastx Blast + package
StringTie
DESeq2
HiSAT2
KAAS
R package DESeq2

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