Severity of Verticillium wilt in olive trees in Andalusia, southern Spain is associated with the spread of a highly virulent, defoliating (D) Verticillium dahliae pathotype of vegetative compatibility group 1A (VCG1A) but the extent of this spread and the diversity of the pathogen population have never been documented. VCG typing of 637 V. dahliae isolates from 433 trees in 65 orchards from fiv...

The development of Verticillium wilt epidemics in olive cv. Arbequina was studied from November 1999 to May 2003 in a drip-irrigated, nontillage orchard established in a soil without a history of the disease at Córdoba, southern Spain. Disease incidence measured at 1-month-intervals increased from 0.2 to 7.8% during this period. Verticillium dahliae infecting the trees was characterized as defo...

A fractions obtained from the culture fluids of a seven fungal species identified as Verticillium albo-atrum; V. lecanii; V. bulbillosum; V. dahliae; Fusarium solani; F. oxysporum, and Aspergillus sclerociarum were shown to contain a compounds with a biological activity against twenty two clinical bacterial strains including eleven isolates of gram positive and other were gram negative. Among t...

The fungal pathogen Verticillium dahliae has resulted in significant losses in numerous crops in coastal California, but lettuce remained unaffected until the mid-1990s. Since then outbreaks have decimated entire fields, but the causes of this sudden susceptibility of lettuce remain elusive. The population structure of V. dahliae isolated from coastal California (n=123) was investigated with 22...

Microorganisms from culture collections and isolates from nature were screened for the ability to catalyze the regioselective glucosylation of pyridoxine (PN) to produce pyridoxine 5'-alpha-D-glucoside (PN-5'-alpha-G) or pyridoxine 4'-alpha-D-glucoside (PN-4'-alpha-G). Transglucosylation activity specific to 5'-position of PN was found in fungi belonging to genera such as Coriolus and Verticill...

Verticillium dahlia Kleb. is a soil-borne pathogen which causes worldwide economically important plant and yield losses. So far no resistance preventing the fungus from growing in the plants could be found in the genus Fragaria. But there are cultivars with different levels of tolerance. In particular after the ban on chemical control with effective soil disinfectants (methylbromid) cultivation...

Bu çalışmada, Verticillium dahliae’nın gelişimi üzerine bazı fungal (Trichoderma harzianum, Trichoderma virens, asperellum, viride) ve maya (Saccharomyces cerevisiae) biyolojik kontrol etmenleri ile vermikompost salisilik asit organik maddelerin etkisi araştırılmıştır. Çalışma in vitro vivo koşullarda yürüyülmüş vitro’da antagonizmin derecesi yüzde olarak engelleme oranı belirlenmiştir. In inhi...