Transcriptional response of the catharanthine biosynthesis pathway to methyl jasmonate/nitric oxide elicitation in Catharanthus roseus hairy root culture
文献类型: 外文期刊
第一作者: Zhou, Mei-Liang
作者: Zhou, Mei-Liang;Shao, Ji-Rong;Zhou, Mei-Liang;Wu, Yan-Min;Tang, Yi-Xiong;Zhu, Xue-Mei
作者机构:
关键词: Catharanthine;Metabolite regulation;Methyl jasmonate;Nitric oxide;Transcript profiling;Zinc finger-binding protein
期刊名称:APPLIED MICROBIOLOGY AND BIOTECHNOLOGY ( 影响因子:4.813; 五年影响因子:4.697 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Jasmonates and nitric oxide (NO) play important roles in the regulation of the signaling network leading to the biosynthesis of plant secondary metabolites. In this work, we explore the effect of constitutive overexpression of CrORCA3 (octadecanoid-responsive Catharanthus AP2/ERF domain), methyl jasmonate (MeJA), and sodium nitroprusside (SNP) on the differentiated tissue of Catharanthus roseus hairy roots. The changes in catharanthine concentration and in the levels of mRNA transcripts of pathway genes and regulators were tracked for 192 h. ORCA3 overexpression led to a slight decrease of the accumulation of catharanthine, while MeJA treatment caused a large increase in the levels of transcripts of pathway genes and the catharanthine concentration. SNP treatment alone or SNP in combination with MeJA treatment caused a dramatic decrease of the cathanranthine concentration, while at the same time the levels of transcripts of zinc finger-binding proteins genes (ZCTs) increased. The latter treatment also caused a decrease of the levels of transcripts of type-I protein prenyltransferase gene (PGGT-I). This response of transcriptional repressors and pathway genes may explain the antagonistic effects of NO and MeJA on catharanthine biosynthesis in C. roseus hairy roots.
分类号: Q939.9
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