Toughing It Out--Disease-Resistant Potato Mutants Have Enhanced Tuber Skin Defenses

Phytopathology
Tamilarasan ThangavelCalum Rae Wilson

Abstract

Common scab, a globally important potato disease, is caused by infection of tubers with pathogenic Streptomyces spp. Previously, disease-resistant potato somaclones were obtained through cell selections against the pathogen's toxin, known to be essential for disease. Further testing revealed that these clones had broad-spectrum resistance to diverse tuber-invading pathogens, and that resistance was restricted to tuber tissues. The mechanism of enhanced disease resistance was not known. Tuber periderm tissues from disease-resistant clones and their susceptible parent were examined histologically following challenge with the pathogen and its purified toxin. Relative expression of genes associated with tuber suberin biosynthesis and innate defense pathways within these tissues were also examined. The disease-resistant somaclones reacted to both pathogen and toxin by producing more phellem cell layers in the tuber periderm, and accumulating greater suberin polyphenols in these tissues. Furthermore, they had greater expression of genes associated with suberin biosynthesis. In contrast, signaling genes associated with innate defense responses were not differentially expressed between resistant and susceptible clones. The resistance p...Continue Reading

References

Jan 1, 1992·Plant Molecular Biology·S W LeeJ Robb
Apr 12, 2000·Plant Physiology·M QuirogaV Valpuesta
Feb 16, 2002·Methods : a Companion to Methods in Enzymology·K J Livak, T D Schmittgen
Sep 21, 2004·Annual Review of Plant Biology·Klaus Apel, Heribert Hirt
Feb 3, 2005·Molecular Microbiology·Johan A KersRosemary Loria
Sep 29, 2005·Journal of Experimental Botany·Nathalie NicotDanièle Evers
Mar 14, 2007·Plant Physiology·Marçal SolerMercè Figueras
Nov 14, 2007·Proceedings of the National Academy of Sciences of the United States of America·Steven H SpoelXinnian Dong
Oct 11, 2011·Plant & Cell Physiology·Francisco Amil-RuizJosé L Caballero
Apr 3, 2012·Current Opinion in Plant Biology·Fred BeissonMike Pollard
Feb 14, 2014·TheScientificWorldJournal·Tamilarasan ThangavelCalum Rae Wilson
Apr 1, 2014·Molecular Plant-microbe Interactions : MPMI·Dawn R D BignellRosemary Loria
May 14, 2014·Annual Review of Phytopathology·Qiao Zhao, Richard A Dixon

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Citations

Apr 4, 2018·The New Phytologist·Anna WunderlingLaura Ragni
Feb 3, 2021·Current Biology : CB·Tonni Grube AndersenNiko Geldner

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