Knowledge of population dynamics of mating types is important for better understanding pathogen's evolutionary potential and sustainable management of natural and chemical resources such as host resistances and fungicides. In this study, 2250 Phytophthora infestans isolates sampled from 61 fields across China were assayed for spatiotemporal dynamics of mating type frequency. Self-fertile isolat...

Laboratory-derived life tables were used to determine the effect of delaying mating of adult female koa seedworm, Cryptophlebia illepida (Butler) (Lepidoptera: Tortricidae), 4 and 6 d on population growth rates. Leslie matrices were developed from the life tables and used to project the effects for approximately four generations. Delay of mating caused a decrease in population growth rate and a...

The incidence of garlic rot has constantly increased in France since the early 2000s. To set up an efficient method protection against this disease, we have clarified its aetiology. This was achieved by surveying from two main French basins production over 3 years. Fungi were isolated 5,493 cloves belonging to pink, purple, and white types. Sequencing translation elongation factor 1α gene 1,171...

Grouping of beta-hemolytic streptococcal isolates by staphylococcal coagglutination was performed with the Phadebact Streptococcus Test to determine whether such isolates could be accurately grouped serologically with 4 h after examination of the primary isolation plates. Of 132 clinical isolates, 131 were correctly grouped by the Phadebact method using the Lancefield precipitation method as th...

Pasteurella multocida is a gram-negative, opportunistic pathogen and the common inhabitant of the upper respiratory tract of domesticated and wild animal species. It is a causative agent of numerous economically important diseases worldwide, such as enzootic bronchopneumonia in ruminants and haemorrhagic septicemia in cattle and buffalo. The present study was undertaken to determine the prevale...

Fifteen of 22 clinical isolates of Enterococcus faecalis with high-level aminoglycoside resistance isolated in Greece, which were tested for mating ability, co-transferred pheromone response genes together with aminoglycoside resistance determinants to a sensitive recipient strain. Nine of them belonged to the same pulsotype, while the remaining six isolates were genetically unrelated. The prgB...

چکیده گونه های فوزاریوم یکی از بیمارگرهای مهم پیاز در ایران بوده که بعضا بذرزاد می باشند. بدین منظور بذور تولیدی در چهار شهرستان از استان-های خراسان رضوی و شمالی جمع آوری و مورد بررسی قرار گرفتند. در آزمایش اول بذور بدون ضدعفونی سطحی و ضد عفونی شده با هیپوکلریت سدیم 1درصد در محیط pda کشت گردیدند. در آزمایشی دیگر بذور ضدعفونی شده به مدت 3 دقیقه در خاک اتوکلاو شده و تحت شرایط گلخانه کاشته شدند و ...

Francisella tularensis, the etiologic agent of tularemia and a Class A Select Agent, is divided into three subspecies and multiple subpopulations that differ in virulence and geographic distribution. Given these differences, there is a need to rapidly and accurately determine if a strain is F. tularensis and, if it is, assign it to subspecies and subpopulation. We designed TaqMan real-time PCR ...

BACKGROUND AND PURPOSE Fusarium species are avid producers of secondary toxic and carcinogenic metabolites such as fumonisin. Contamination of food and feed products with fumonisin can be hazardous to the health of humans and animals and may lead to agricultural loss. Accordingly, in this study, we aimed to evaluate the effects of Candida parapsilosis on the growth and fumonisin production of F...

Disease caused by the pathogenic yeast Cryptococcus gattii begins with the inhalation of an infectious propagule. As C. gattii is heavily encapsulated, this propagule is most likely to be a basidiospore. However, most C. gattii strains are infertile in laboratory crosses, and population studies indicate that recombination and dispersal are very restricted. In addition, strains of the alpha mati...