NbGIS regulates glandular trichome initiation through GA signaling in tobacco

Plant Molecular Biology
Yihua LiuYinbo Gan

Abstract

A novel gene NbGIS positively regulates glandular trichome initiation through GA Signaling in tobacco. NbMYB123-like regulates glandular trichome initiation by acting downstream of NbGIS in tobacco. Glandular trichome is a specialized multicellular structure which has capability to synthesize and secrete secondary metabolites and protects plants from biotic and abiotic stresses. Our previous results revealed that a C2H2 zinc-finger transcription factor GIS and its sub-family genes act upstream of GL3/EGL3-GL1-TTG1 transcriptional activator complex to regulate trichome initiation in Arabidopsis. In this present study, we found that NbGIS could positively regulate glandular trichome development in Nicotiana benthamiana (tobacco). Our result demonstrated that 35S:NbGIS lines exhibited much higher densities of trichome on leaves, main stems, lateral branches and sepals than WT plants, while NbGIS:RNAi lines had the opposite phenotypes. Furthermore, our results also showed that NbGIS was required in response to GA signal to control glandular trichome initiation in Nicotiana benthamiana. In addition, our results also showed that NbGIS significantly influenced GA accumulation and expressions of marker genes of the GA biosynthesis, mig...Continue Reading

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Citations

Oct 28, 2019·The New Phytologist·Robert Schuurink, Alain Tissier
Jul 2, 2021·Horticulture Research·Zhongxuan FengXingwang Liu
Dec 21, 2020·Trends in Biotechnology·Francisco Javier Molina-HidalgoAlain Goossens
Oct 12, 2021·Frontiers in Plant Science·Guoliang HanBaoshan Wang

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Methods Mentioned

BETA
PCR
transgenic

Software Mentioned

MEGA
ClustalX
NbGIS
Statistic
chemstation
BLASTp
Pro Plus
SPINDLY
Image

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