Identification and Expression Analysis of Cold Shock Protein 3 (BcCSP3) in Non-Heading Chinese Cabbage (Brassica rapa ssp. chinensis )

Plants
Feiyi HuangXilin Hou

Abstract

A cold-related protein, cold shock protein 3 (BcCSP3), was isolated from non-heading Chinese cabbage in this study. BcCSP3 can encode 205 amino acids (aa) with an open reading frame (ORF) of 618 base pairs (bp). Multiple sequence alignment and phylogenetic tree analyses showed that BcCSP3 contains an N-terminal cold shock domain and is highly similar to AtCSP2, their kinship is recent. Real-time quantitative polymerase chain reaction (RT-qPCR) showed that the expression level of BcCSP3 in stems and leaves is higher than that in roots. Compared with other stress treatments, the change in BcCSP3 expression level was most pronounced under cold stress. In addition, a BcCSP3-GFP fusion protein was localized to the nucleus and cytoplasm. These results indicated that BcCSP3 may play an important role in response to cold stress in non-heading Chinese cabbage. This work may provide a reference for the identification and expression analysis of other CSP genes in non-heading Chinese cabbage.

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Methods Mentioned

BETA
PCR
interaction prediction

Software Mentioned

WoLF PSORT
MEGA
ClustalW
TMHMM
SOPMA
TMpred
STRING
SignalP
ProtScale
DNAMAN

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