共查询到9条相似文献,搜索用时 0 毫秒
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RhHB1 mediates the antagonism of gibberellins to ABA and ethylene during rose (Rosa hybrida) petal senescence 总被引:4,自引:0,他引:4
Peitao Lü Changqing Zhang Jitao Liu Xiaowei Liu Guimei Jiang Xinqiang Jiang Muhammad Ali Khan Liangsheng Wang Bo Hong Junping Gao 《The Plant journal : for cell and molecular biology》2014,78(4):578-590
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Spearmint R2R3‐MYB transcription factor MsMYB negatively regulates monoterpene production and suppresses the expression of geranyl diphosphate synthase large subunit (MsGPPS.LSU) 下载免费PDF全文
Vaishnavi Amarr Reddy Nadimuthu Kumar Prasanna Nori Venkatesh Chakravarthy Rajan Deepa Panicker Vishweshwaran Sridhar Hui‐Zhu Mao Rajani Sarojam 《Plant biotechnology journal》2017,15(9):1105-1119
Many aromatic plants, such as spearmint, produce valuable essential oils in specialized structures called peltate glandular trichomes (PGTs). Understanding the regulatory mechanisms behind the production of these important secondary metabolites will help design new approaches to engineer them. Here, we identified a PGT‐specific R2R3‐MYB gene, MsMYB, from comparative RNA‐Seq data of spearmint and functionally characterized it. Analysis of MsMYB‐RNAi transgenic lines showed increased levels of monoterpenes, and MsMYB‐overexpressing lines exhibited decreased levels of monoterpenes. These results suggest that MsMYB is a novel negative regulator of monoterpene biosynthesis. Ectopic expression of MsMYB, in sweet basil and tobacco, perturbed sesquiterpene‐ and diterpene‐derived metabolite production. In addition, we found that MsMYB binds to cis‐elements of MsGPPS.LSU and suppresses its expression. Phylogenetic analysis placed MsMYB in subgroup 7 of R2R3‐MYBs whose members govern phenylpropanoid pathway and are regulated by miR858. Analysis of transgenic lines showed that MsMYB is more specific to terpene biosynthesis as it did not affect metabolites derived from phenylpropanoid pathway. Further, our results indicate that MsMYB is probably not regulated by miR858, like other members of subgroup 7. 相似文献
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