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Phytohormones and their crosstalk in regulating stomatal development and patterning.

Hongbin Wei1,2, Yifeng Jing2, Lei Zhang3

  • 1School of Life Sciences, Southwest University, Chongqing 400715, China.

Journal of Experimental Botany
|January 29, 2021
PubMed
Summary

Phytohormones regulate plant stomatal development and patterning. Understanding these plant hormone interactions in Arabidopsis can improve crop stress adaptation.

Keywords:
Arabidopsis thalianacotyledonhypocotylphytohormonessignaling convergencespacing patternstomatal development

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Area of Science:

  • Plant Biology
  • Developmental Biology
  • Hormone Signaling

Background:

  • Stomata regulate gas exchange and are crucial for plant survival.
  • Phytohormones are key regulators of plant growth, development, and stress responses.
  • Specific phytohormones like abscisic acid and auxin influence stomatal development.

Purpose of the Study:

  • To review shared and distinct mechanisms controlling stomatal development in Arabidopsis cotyledons and hypocotyls.
  • To summarize how phytohormone signaling integrates with core stomatal development pathways.
  • To explore phytohormone crosstalk in regulating stomatal density and spacing.

Main Methods:

  • Review of existing scientific literature on phytohormone regulation of stomatal development.
  • Comparative analysis of stomatal development mechanisms in different Arabidopsis tissues.
  • Synthesis of knowledge on hormonal signaling integration and crosstalk.

Main Results:

  • Identified shared and distinct regulatory mechanisms for stomatal development in Arabidopsis cotyledons and hypocotyls.
  • Detailed how various phytohormones (abscisic acid, jasmonic acid, brassinosteroids, auxin, cytokinin, ethylene, gibberellic acid) modulate stomatal patterning.
  • Highlighted differential responsiveness of Arabidopsis tissues to phytohormones.

Conclusions:

  • Phytohormone signaling pathways are intricately integrated into stomatal development.
  • Understanding these pathways provides insights into tailoring stomatal patterns for improved crop traits.
  • Arabidopsis research can inform strategies for enhancing cereal grass adaptive responses to environmental stress.