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Metabolomes of potato root exudates: compounds that stimulate resting spore germination of the soil-borne pathogen Spongospora subterranea

Citation

Balendres, MA and Nichols, DS and Tegg, RS and Wilson, CR, Metabolomes of potato root exudates: compounds that stimulate resting spore germination of the soil-borne pathogen Spongospora subterranea, Journal of Agricultural and Food Chemistry, 64, (40) pp. 7466-7474. ISSN 0021-8561 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 American Chemical Society

DOI: doi:10.1021/acs.jafc.6b03904

Abstract

Abstract Image

Root exudation has importance in soil chemical ecology influencing rhizosphere microbiota. Prior studies reported root exudates from host and nonhost plants stimulated resting spore germination of Spongospora subterranea, the powdery scab pathogen of potato, but the identities of stimulatory compounds were unknown. This study showed that potato root exudates stimulated S. subterranea resting spore germination, releasing more zoospores at an earlier time than the control. We detected 24 low molecular weight organic compounds within potato root exudates and identified specific amino acids, sugars, organic acids, and other compounds that were stimulatory to S. subterranea resting spore germination. Given that several stimulatory compounds are commonly found in exudates of diverse plant species, we support observations of nonhost-specific stimulation. We provide knowledge of S. subterranea resting spore biology and chemical ecology that may be useful in formulating new disease management strategies.

Item Details

Item Type:Refereed Article
Keywords:powdery scab, root infection, Plasmodiophorid, HILIC UPLC-MS, zoospore release, metabolomics, root exudates, potato disease
Research Division:Agricultural and Veterinary Sciences
Research Group:Horticultural Production
Research Field:Horticultural Crop Protection (Pests, Diseases and Weeds)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural Crops
Objective Field:Vegetables
Author:Balendres, MA (Mr Mark Balendres)
Author:Nichols, DS (Dr David Nichols)
Author:Tegg, RS (Dr Robert Tegg)
Author:Wilson, CR (Associate Professor Calum Wilson)
ID Code:112132
Year Published:2016
Web of Science® Times Cited:3
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2016-10-27
Last Modified:2017-11-06
Downloads:0

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