Bioinformatics and Expression Analysis of CPMAX2 in Citrange

Autor: Feirong Yuan, Yaoming Yuan, Zhixin Li, Alessandra Gentile, Ziniu Deng
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Horticultural Plant Journal, Vol 2, Iss 3, Pp 126-132 (2016)
Druh dokumentu: article
ISSN: 2468-0141
DOI: 10.1016/j.hpj.2016.08.001
Popis: Transgenic citrange lines with rolABC genes behave rosette branching and extreme dwarfing. To explore the regulatory mechanism of plant hormones in axillary shoot growth of transgenic citrange, a full length cDNA of CPMAX2 was cloned from citrange [Citrus sinensis (L.) Osb × Poncirus trifoliate (L.) Raf.] by RT-PCR in this study. The expression of CPMAX2 was detected in axillary tender leaves of 3 transgenic citrange lines and the wild type. Additionally, we constructed an over-expression vector CPMAX2-pCAMBIA1301 for further study. The results showed that the cDNA sequence and its putative peptide sequence shared 99.66% and 99.14% of identity with its Citrus sinensis ortholog MAX2. The deduced amino acid sequence contained putatively one F-box and two LRR repeat domains that are highly conserved in MAX2 genes. CPMAX2 was obviously down-expressed in tender leaves of 3 transgenic citrange lines compared with the wild type. The results suggest CPMAX2 play an important role in regulating the rosette shoot growth in transgenic citrange with rolABC genes.
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