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RpNACs transcription factors coordinate leaf margin development in Rosa persica.

Chenjie Zhang1, Xiaolong Zhang1, Zeyi Deng1

  • 1School of Landscape Architecture, Beijing Forestry University, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, Beijing Laboratory of Urban and Rural Ecological Environment, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education; State Key Laboratory of Efficient Production of Forest Resources, Beijing, China.

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Summary
This summary is machine-generated.

Researchers identified key NAC transcription factors in Rosa persica, revealing their role in leaf shape development. Overexpression of two genes in Arabidopsis resulted in altered leaf morphology and increased chlorophyll, offering insights into plant adaptation and breeding potential.

Keywords:
Rosa persicaFunctional analysisGene family analysisLeaf margin lobedNAC transcription factor

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Area of Science:

  • Plant biology
  • Genetics
  • Molecular biology

Background:

  • Leaf morphology is vital for plant photosynthesis, adaptation, and stress tolerance.
  • Most Rosa species have compound leaves, but Rosa persica uniquely possesses simple leaves.
  • A naturally occurring deep-lobed leaf variant in R. persica serves as a model for studying leaf development.

Purpose of the Study:

  • To characterize the NAC transcription factor family in Rosa persica.
  • To investigate the role of RpNAC genes in leaf margin morphogenesis.
  • To understand the genetic mechanisms underlying leaf development in Rosa.

Main Methods:

  • Bioinformatic analysis of the NAC gene family in R. persica.
  • Weighted gene co-expression network analysis (WGCNA) and expression profiling.
  • Subcellular localization, transcriptional activation assays, and heterologous overexpression in Arabidopsis thaliana.

Main Results:

  • Five candidate RpNAC genes were identified and characterized.
  • Candidate RpNAC proteins were found to be nuclear-localized and possess transcriptional activation activity.
  • Overexpression of RpNAP1 and RpNAC090.2 in Arabidopsis induced wavy leaf margins, increased leaf width, and enhanced chlorophyll content.

Conclusions:

  • RpNAC genes play significant roles in regulating leaf margin development and morphology in Rosa species.
  • These findings provide insights into the genetic control of leaf development and photosynthesis.
  • The identified genes may be valuable for targeted breeding of ornamental and stress-resilient Rosa varieties.