Vegetative compatibility in the entomopathogen Verticillium lecanii

Korolev, Nadia; Gindin, Galina

doi:10.1017/s0953756298007953

Cited by 17 publications

(9 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, two phenotypic classes of Nit mutants were identified among 102 mutants; 95% of these isolates were identified as nit 1/ nit 3, and 5% as NitM. Similar recovery frequencies of nit 1 and NitM classes were also found for V. lecanii (Korolev and Gindin, 1999), V. dahliae (Korolev et al., 1997) and Colletotrichum coccodes (Nitzan et al., 2002) on WAC medium, and for C. destructivum, C. gloesporioides and C. fragariae on PDC medium (Brooker et al., 1991).…”

Section: Discussionsupporting

confidence: 80%

Vegetative Compatibility and Pathogenicity of Verticillium dahliae Kleb. Isolates from Olive in Israel

Tsror

Levin

2003

Journal of Phytopathology

View full text Add to dashboard Cite

Fifty‐two isolates of Verticillium dahliae from olive trees grown at different locations in Israel were assigned to vegetative compatibility groups (VCGs), using nitrate non‐utilizing (Nit) mutants. A higher frequency of nit1/nit3 mutants (95%) was obtained compared with NitM (5%), with 81% of the isolates being assigned to VCG4B and 19% to VCG2A. The pathogenicity of 14 randomly selected isolates (seven of each VCG) was tested on olive twigs (cv. Picual) and tomato. VCG4B and VCG2A isolates were similarly aggressive on olive. However, VCG2A isolates were more aggressive on tomato (line 139) than the VCG4B isolates as indicated by a higher colonization index.

show abstract

Section: Discussionsupporting

confidence: 80%

Vegetative Compatibility and Pathogenicity of Verticillium dahliae Kleb. Isolates from Olive in Israel

Tsror

Levin

2003

Journal of Phytopathology

View full text Add to dashboard Cite

show abstract

“…In the present study, two phenotypic classes were identified among 193 nit mutants: 93% were nit1 and 7% were NitM. Similar recovery frequencies of nit1 and NitM classes were also found for V. lecanii (Korolev and Gindin 1999), V. dahliae (Korolev and Katan 1997) and Colletotrichum coccodes (Nitzan et al 2002) on WAC medium. A few mutants grew very slowly on CDA amended with nitrite, or developed moderately dense rather than expansive thin mycelium on this medium.…”

Section: Discussionsupporting

confidence: 84%

Vegetative compatibility and pathogenicity of Verticillium dahliae isolates from chrysanthemum in Turkey

Göre

2008

Phytoparasitica

View full text Add to dashboard Cite

A collection of 30 strains of Verticillium dahliae, recovered during 2004-2006 from 12 cultivars of chrysanthemum (Chrysanthemum morifolium) in five districts of İzmir province in Turkey, was assigned to vegetative compatibility groups (VCGs) based on pairings of complementary nitrate-nonutilizing (nit) mutants induced on a chlorate-containing medium. Of these strains, nine were assigned to VCG1, seven to VCG2A, 11 toVCG2B and one to VCG4B. The remaining two strains could not be tested for vegetative compatibility because of their inability to yield nit mutants. Pathogenicity tests conducted by the root-dip method, demonstrated that wilt of chrysanthemum in Turkey is caused by V. dahliae, and most strains in VCG1 were significantly more aggressive to chrysanthemum than those in VCGs 2 and 4B. This is the first known study in the world of the VCGs of V. dahliae isolates from chrysanthemum.

show abstract

“…Self-compatibility in B. cinerea strains has been demonstrated by heterokaryon formation between Nit mutants (Beever and Parkes 2003;Delcan and Melgarejo 2002), and by complementation between sul and Nit mutants derived from the same strain (Weeds et al 1998). Self-compatibility is usual but not universal among fungi, e.g., self-incompatibility is common in the entomopathogen Verticillium lecanii (Korolev and Gindin 1999). In this study, inter-strain incompatibility was widespread among B. cinerea strains.…”

Section: Discussionmentioning

confidence: 53%

Vegetative compatibility grouping in Botrytis cinerea using sulphate non-utilizing mutants

2008

View full text Add to dashboard Cite

Twenty-one strains of Botrytis cinerea isolated from six plant species on ten sites throughout Israel, as well as a strain from France, were tested for vegetative and mycelial incompatibility, pathogenicity, resistance to the fungicides carbendazim and iprodione, and colony morphology. Selenate-resistant mutants were isolated from the strains as spontaneous, fastgrowing sectors arising from restricted colonies on medium amended with sodium selenate with a mean frequency of 0.04 sectors/colony; 81% of the sectors were sulphate non-utilizing (sul) mutants. One hundred and four sul mutants were divided into two complementary groups: resistant (66 mutants) and sensitive to chromate. Based on compatibility reactions between chromate-resistant and chromate-sensitive sul mutants, 12 strains were compatible only with themselves and were each classified as belonging to different vegetative compatibility groups (VCGs). Nine strains were each compatible with one to three other strains, and were assembled into three multi-member VCGs. Mycelial incompatibility between wild-type strains (barrage), in the form of a zone of dark pigmentation or sparse mycelium with or without dark pigmentation of the agar along the line of confrontation, was observed for 70% of the inter-strain pairings. There was no correspondence in compatibility between strains revealed by two approaches: strains in different VCGs did not necessarily produce a barrage. However, self-compatibility was observed both as heterokaryon formation between complementary sul mutants and as an absence of barrages between mycelia of wild-type strains; wild-type strains belonging to the same VCG did not exhibit strong barrages, although weak antagonistic reactions were observed. Strains in two multimember VCGs showed the same patterns of resistance to carbendazim and iprodione; the third multi-member VCG contained isolates with different patterns of resistance. Four morphological types were revealed among wild-type strains: conidial (five strains), sclerotial (six strains), intermediate (ten strains), and mycelial (one strain). On bean leaves, conidial strains were more aggressive than sclerotial strains.

show abstract

Vegetative compatibility in the entomopathogen Verticillium lecanii

Cited by 17 publications

References 33 publications

Vegetative Compatibility and Pathogenicity of Verticillium dahliae Kleb. Isolates from Olive in Israel

Vegetative Compatibility and Pathogenicity of Verticillium dahliae Kleb. Isolates from Olive in Israel

Vegetative compatibility and pathogenicity of Verticillium dahliae isolates from chrysanthemum in Turkey

Vegetative compatibility grouping in Botrytis cinerea using sulphate non-utilizing mutants

Contact Info

Product

Resources

About