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Potato root exudation and release of Spongospora subterranea resting spore germination stimulants are affected by plant and environmental conditions

journal contribution
posted on 2023-05-19, 00:36 authored by Balendres, MA, David NicholsDavid Nichols, Robert TeggRobert Tegg, Calum WilsonCalum Wilson
Variation in plant and environmental conditions were studied to determine the effect thereof on the exudation of low-molecular-weight organic compounds by potato roots. The results of the phytochemical analyses showed that among the conditions investigated, root vigour, potato cultivar, nutrients in incubation solution and temperature influenced the number and the type of primary metabolites released. Moreover, these conditions influenced our detection of compounds known to stimulate germination of resting spores of the pathogen Spongospora subterranea, causal agent of powdery scab and root diseases of potato. We conclude that changes in plant and environmental conditions can affect the release of specific compounds that stimulate germination of S. subterranea resting spores. The impact of the factors affecting potato root exudation on subsequent disease development is discussed.

Funding

Horticulture Innovation Australia

History

Publication title

Journal of Phytopathology

Volume

165

Pagination

64-72

ISSN

0931-1785

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Blackwell Verlag Gmbh

Place of publication

Kurfurstendamm 57, Berlin, Germany, D-10707

Rights statement

Copyright 2016 Blackwell Verlag GmbH

Repository Status

  • Restricted

Socio-economic Objectives

Field grown vegetable crops

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    University Of Tasmania

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