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Related Experiment Video

Updated: Mar 14, 2026

Author Spotlight: Advancing Stomatal Research with Automated Aperture Measurement
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Plant virus infections control stomatal development.

Rose R Murray1, Mark S M Emblow1, Alistair M Hetherington1

  • 1School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, UK.

Scientific Reports
|October 1, 2016
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Summary
This summary is machine-generated.

Viral infection impacts plant stomata development and function in susceptible hosts, altering stomatal index and density. This study reveals a new facet of plant-virus interactions affecting gas exchange.

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Area of Science:

  • Plant Pathology
  • Plant Physiology
  • Molecular Plant-Virus Interactions

Background:

  • Stomata regulate gas exchange and are entry points for pathogens.
  • The role of stomata in viral infections is poorly understood.
  • Viral pathogens can manipulate plant physiology.

Purpose of the Study:

  • To investigate the influence of viral infection on stomatal development and function.
  • To compare effects in susceptible versus resistant plant-virus systems.
  • To determine if viral infection impacts transpiration rates.

Main Methods:

  • Infection of Nicotiana tabacum with Tobacco mosaic virus (TMV).
  • Infection of Arabidopsis thaliana with Turnip vein-clearing virus (TVCV).
  • Analysis of stomatal index, stomatal density, and transpiration rates in systemic leaves.

Main Results:

  • Susceptible hosts (N. tabacum, A. thaliana) showed reduced stomatal index (9.8-12.3%) and stomatal density (19.6% in A. thaliana) upon viral infection.
  • Resistant hosts (N. glutinosa, C. quinoa) did not exhibit significant changes in stomatal parameters.
  • Transpiration rate was significantly reduced in TMV-infected N. tabacum.

Conclusions:

  • Viral infection significantly influences stomatal development and density in susceptible plant hosts.
  • The observed changes in stomata suggest a mechanism for viral manipulation of plant physiology.
  • Reduced transpiration in infected plants may impact disease progression and plant health.