Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Mechanism of Photosynthesis Decrease by Verticillium dahliae in Potato.

R L Bowden1, D I Rouse, T D Sharkey

  • 1Department of Plant Pathology, University of Wisconsin, Madison, Wisconsin 53706.

Plant Physiology
|November 1, 1990
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Honoring Hartmut Karl Lichtenthaler, innovative pioneer of photosynthesis, on his 90<sup>th</sup> birthday.

Photosynthetica·2025
Same author

Performance of Four New Leaf Rust Resistance Genes Transferred to Common Wheat from Aegilops tauschii and Triticum monococcum.

Plant disease·2019
Same author

Effects of Soil Water Content and Soil Temperature on Efficacy of Metham-Sodium Against Verticillium dahliae.

Plant disease·2019
Same author

Multiple Disease Resistance in Interspecific Hybrids of Potato.

Plant disease·2019
Same author

Inheritance of Resistance to Verticillium dahliae in Diploid Interspecific Potato Hybrids.

Plant disease·2019
Same author

The Window of Risk for Emigration of Wheat streak mosaic virus Varies with Host Eradication Method.

Plant disease·2019
Same journal

Nissolia brasiliensis as a non-nodulating model legume.

Plant physiology·2026
Same journal

Auxin response factor OsARF22 controls rice seed vigor by suppressing ABA signaling.

Plant physiology·2026
Same journal

The primary nitrate response TGA1 and TGA4 transcription factors are negative regulators of sulfate uptake and metabolism.

Plant physiology·2026
Same journal

TaSPL14-D diverged from its ortholog to regulate tiller angle in rice: a caveat for orthology-based functional inference.

Plant physiology·2026
Same journal

From wrinkled seeds to plant oil accumulation networks: The legacy of a Plant Physiology classic.

Plant physiology·2026
Same journal

LcHXK1 mediates glucose signaling to inhibit fruit abscission by phosphorylating LcWRKY42, a feedback regulator in lignin polymerization.

Plant physiology·2026
See all related articles

Verticillium dahliae infection in potato plants initially reduces photosynthesis by causing stomatal closure, not by affecting respiration or light use efficiency. This leads to decreased carbon assimilation and intercellular CO2 levels.

Area of Science:

  • Plant pathology
  • Plant physiology

Background:

  • Verticillium dahliae is a fungal pathogen causing significant potato crop losses.
  • Early detection of plant stress is crucial for disease management.

Purpose of the Study:

  • To investigate the initial physiological impacts of Verticillium dahliae infection on visually symptomless potato leaves.
  • To determine the primary cause of reduced photosynthesis in infected plants.

Main Methods:

  • Measurement of carbon assimilation rate, stomatal conductance, and intercellular CO2 in infected and healthy potato leaves.
  • Analysis of dark respiration, light use efficiency, and leaf water potential.
  • (14)CO2 autoradiography to assess carbon assimilation distribution across leaf tissues.

Main Results:

Related Experiment Videos

  • Infected leaves showed reduced carbon assimilation rate, stomatal conductance, and intercellular CO2.
  • No significant changes were observed in dark respiration or light use efficiency.
  • Low stomatal conductance correlated with lower leaf water potentials, but osmotic potentials remained unaffected.

Conclusions:

  • The initial reduction in potato photosynthesis due to Verticillium dahliae is primarily caused by stomatal closure.
  • Stomatal closure leads to decreased carbon assimilation and intercellular CO2, independent of respiration or light use efficiency changes.