Vegetative compatibility grouping in Verticillium nigrescens and V-tricorpus

Citation
N. Korolev et T. Katan, Vegetative compatibility grouping in Verticillium nigrescens and V-tricorpus, MYCOL RES, 103, 1999, pp. 65-76
Citations number
40
Categorie Soggetti
Plant Sciences
Journal title
MYCOLOGICAL RESEARCH
ISSN journal
09537562 → ACNP
Volume
103
Year of publication
1999
Part
1
Pages
65 - 76
Database
ISI
SICI code
0953-7562(199901)103:<65:VCGIVN>2.0.ZU;2-O
Abstract
Isolates of Verticillium nigrescens and V. tricorpus were obtained from pot ato, cotton, eggplant, weeds and field soil in Israel. Chiorate-resistant n itrate-nonutilizing (nit) mutants were generated from each isolate and used in complementation (heterokaryon) tests. Eleven vegetative-compatibility g roups (VCGs) were found among 19 V. nigrescens isolates from nine sites, an d nine VCGs among 26 isolates of V. tricorpus from eight sites. Optimal gro wth temperature was 24-27 degrees C for V. nigrescens and 24 degrees for V. tricorpus. None of the isolates caused leaf symptoms or stunting in inocul ated eggplant and cotton seedlings, while severe symptoms were caused by V. dahliae. Colonization of inoculated seedlings by V. nigrescens and V. tric orpus occurred primarily in roots and hypocotyls, while V. dahliae heavily colonized upper stems as well.