The resistance of spores of resistant strains of <i>Botrytis cinerea</i> to quintozene, tecnazene and dicloran

Esuruoso, O. F.; Wood, R. K. S.

doi:10.1111/j.1744-7348.1971.tb04646.x

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…Several authors have suggested that variations in fungicide resistance among isolates of B. fuckeliana could be due to the coexistence of genetically different nuclei in a heterokaryotic mycelium (Webster et al, 1970;Esuruoso & Wood, 1971;Summers et ai, 1984;Akutsu et aL, 1988aAkutsu et aL, , 1988b. Heterokaryosis enables fungi to • adapt to changing environmental conditions.…”

Section: Inheritance Of Dicarboximide Resistance and Osmotic Sensitivitymentioning

confidence: 99%

Separation and interference of strains from a citrus tristeza virus isolate evidenced by biological activity and double‐stranded RNA (dsRNA) analysis

Moreno¹,

Guerri²,

Ballester-Olmos³

et al. 1993

Plant Pathology

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Separation of strains of citrus tristeza virus (CTV), differentiated by their double-stranded RNA (dsRNA) profiles, was obtained by graft-inoculating citron plants from a Mexican lime that had been recently aphid-or graft-inoculated with a mild CTV isolate (T-385). Up to 24 sub-isolates with differing dsRNA profiles were obtained from the aphid-inoculated lime. Some of these sub-isolates induced stronger symptoms in several citrus species than the original T-385 isolate. One sub-isolate, T-385-33, was mild in Mexican lime, but induced stem pitting on sweet orange. Inoculation of this isolate on Mexican lime, sour orange and Eureka lemon induced mild or no symptoms when inoculum was taken from citron, but very severe symptoms when the inoculum was from sweet orange. Mexican lime and sweet orange plants co-inoculated with T-385-33 from sweet orange in combination with the other 23 sub-isolates showed mild symptoms. The results obtained suggest that there is natural cross-protection among sub-isolates in the original T-385 isolate. RESULTS dsRNA profilesA mild CTV isolate from the IVIA collection, T-385 (Moreno etal., 1991), was graft-inoculated to two citron plants, which were kept in the greenhouse. When these plants were periodically analysed for dsRNA content, variations in the electrophoretic profiles could be observed (Fig. 1).The original T-385 field isolate was aphidtransmitted to a Mexican lime plant and 2 months later, when the lime first reacted positively io CTV by ELISA, was graft-inoculated to 40 citron plants. When these citron plants were individually analysed 2 years after inoculation, up to 24 different dsRNA profiles could be identified (Fig, Plant Pathology 42,(48)(49)(50)(51)(52)(53)(54)(55)(56)(57)

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Section: Inheritance Of Dicarboximide Resistance and Osmotic Sensitivitymentioning

confidence: 99%

Separation and interference of strains from a citrus tristeza virus isolate evidenced by biological activity and double‐stranded RNA (dsRNA) analysis

Moreno¹,

Guerri²,

Ballester-Olmos³

et al. 1993

Plant Pathology

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“…cinerea strains to tolerate low dosages of benomyl, it is surprising that in all the tests pursued no such strains appeared despite the relative ease with which this fungus adapts to other fungicides (Esuruoso and Wood, 1971;Webster et al, 1970). Further study on the induction of tolerance among sensitive strains seems worthwhile,…”

Section: Discussionmentioning

confidence: 94%

Tolerance to benomyl in Botrytis cinerea and Fusarium oxysporum

et al. 1977

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In 1974, a field survey revealed a widespread occurrence of benomyl tolerance in Botrytis cinerea. When young mycelium discs were transferred to media with different benomyl concentrations, various tolerance groups could be distinguished, Cultures obtained by hyphal tip isolations from these isolates and replicated by means of a multipin replicator showed only two types of response: inhibition by 0

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