期刊
APPLIED SOIL ECOLOGY
卷 101, 期 -, 页码 152-164出版社
ELSEVIER
DOI: 10.1016/j.apsoil.2016.01.021
关键词
Verticillium dahliae; Disease tolerance; Water balance; Chlorophyll fluorescence; Strawberry; Arbuscular mycorrhiza
类别
资金
- Polish Ministry of Science and Higher Education [580/E-177/SPUB-M/COST/P-06/DZ 48/2002-2003]
Verticillium dahliae is a soil borne plant pathogen that causes Verticilium wilt disease in strawberry plants. Arbuscular mycorrhizal (AMF) symbiosis plays a major role in plant's ability to withstand numerous abiotic and biotic stresses, including pathogenic fungi infections. This study was conducted to test the effect of mycorrhization with arbuscular mycorrhizal fungi on reaction of strawberry plants susceptible (cv. 'Elsanta') and tolerant/resistant (cv. 'Senga Sengana' and K40 clone) to V. dahliae infection. Response of mycorrhized plants to pathogen infection was determined visually as disease severity and by measuring plant water status (leaf water potential, stomatal conductance, transpiration rate and relative water content) and photochemical activity, using chlorophyll a fluorescence method. AMF significantly suppressed disease development in highly susceptible 'Elsanta' and moderately in 'Senga Sengana' and somaclone K40. Inhibition of disease development in 'Elsanta' plants was accompanied by increased stomatal conductance, transpiration rate and, as result, leaf water potential. Photochemical activity, measured as chlorophyll a fluorescence parameters, decreased with disease development only in 'Elsanta' plants and AMF significantly counteracted this effect. AMF did not have an effect on photochemical activity in the cultivars tolerant/resistant to V. dahliae. (C) 2016 Elsevier B.V. All rights reserved.
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