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Plant Molecular Biology

, Volume 98, Issue 1–2, pp 153–167 | Cite as

NbGIS regulates glandular trichome initiation through GA signaling in tobacco

  • Yihua Liu
  • Dongdong Liu
  • Ali Raza Khan
  • Bohan Liu
  • Minjie Wu
  • Linli Huang
  • Junyu Wu
  • Ge Song
  • Hongwei Ni
  • Haiming Ying
  • Hao Yu
  • Yinbo GanEmail author
Article
  • 441 Downloads

Abstract

Key message

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.

Abstract

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, might result in the changes of growth and maturation in tobacco. Lastly, our results also showed that NbMYB123-like regulated glandular trichome initiation in tobacco by acting downstream of NbGIS. These findings provide new insights to discover the molecular mechanism by which C2H2 transcriptional factors regulates glandular trichome initiation through GA signaling pathway in tobacco.

Keywords

Glandular trichome NbGIS GA signaling NbMYB123-like Tobacco 

Abbreviations

bHLH

Basic helix-loop-helix

CKs

Cytokinins

Ct

Cycle threshold

GA

Gibberellin acid

GIS

Glabrous inflorescence stems

JAs

Jasmonates

SA

Salicylic acid

VIGS

Virus-induced gene silencing

Notes

Acknowledgements

The research was funded by National Natural Science Foundation of China (Grant Nos. 31529001; 31570183; 31661143004); Zhejiang Provincial Natural Science Foundation of China (Grant No. LZ15C020001); Major State Basic Research Development Program (973 Program, Grant No. 2015CB150200) and the National Key R & D Program of China (2016YFD0100701).

Author contributions

YL contributed to all experiments and manuscript preparation. YG, YH and YL conceived and designed the study and wrote the manuscript; DL and BL analyzed data; YL, JW and GS involved in gene cloning, gene transformation and hormone experiments; MW, ARK, HY, HN and LH contributed to gene expression analysis and trichome phenotype analyses. All authors read and approved the final manuscript.

Compliance with ethical standards

Conflict of interest

The authors have no conflicts of interest to declare.

Research involving human and animal rights

This study did not involve human and animal subjects.

Supplementary material

11103_2018_772_MOESM1_ESM.doc (4.4 mb)
Supplementary material 1 (DOC 4476 KB)
11103_2018_772_MOESM2_ESM.xls (31 kb)
Supplementary material 1 (XLS 31 KB)

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Yihua Liu
    • 1
  • Dongdong Liu
    • 1
  • Ali Raza Khan
    • 1
  • Bohan Liu
    • 1
  • Minjie Wu
    • 1
  • Linli Huang
    • 1
  • Junyu Wu
    • 1
  • Ge Song
    • 1
  • Hongwei Ni
    • 1
  • Haiming Ying
    • 1
  • Hao Yu
    • 2
  • Yinbo Gan
    • 1
    Email author
  1. 1.Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina
  2. 2.Department of Biological Sciences and Temasek Life Sciences LaboratoryNational University of SingaporeSingaporeSingapore

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