Water availability affects extracellular hydrolytic enzyme production by Aspergillus flavus and Aspergillus parasiticus
نویسندگان
چکیده
منابع مشابه
Aflatoxin production in peanut varieties by Aspergillus flavus Link and Aspergillus parasiticus Speare.
Levels of aflatoxin produced in peanuts differed with the genetic variety of plant and with the species and strain of invading fungus. Possibilities for identifying groundnut varieties partially resistant to aflatoxin production are discussed.
متن کاملSubstrate-induced lipase gene expression and aflatoxin production in Aspergillus parasiticus and Aspergillus flavus.
AIMS To establish a relationship between lipase gene expression and aflatoxin production by cloning the lipA gene and studying its expression pattern in several aflatoxigenic and nontoxigenic isolates of Aspergillus flavus and A. parasiticus. METHODS AND RESULTS We have cloned a gene, lipA, that encodes a lipase involved in the breakdown of lipids from aflatoxin-producing A. flavus, A. parasi...
متن کاملInteraction of strains of non - toxigenic Aspergillus flavus with Aspergillus parasiticus on aflatoxin production
Aflatoxins production is affected by abiotic, biotic and genetic parameters. Eugenesic and dysgenetic condition for aflatoxinogenesis are relatively well studied, such as: the influence of temperature, pH, Aw, Oxigen tension, osmotic pression, organic and inorganic nutrients, substance with fungistatic effects: however there are relatively few knowledge about endogenous regulator mechanisms, th...
متن کاملمقایسهی رشد قارچ Aspergillus parasiticus و Aspergillus flavus در شرایط مختلف دما، رطوبت و pH
چکیده قارچ‌های Aspergillus parasiticusو Aspergillus flavusاز مهمترین عوامل آلودهکنندهی موادغذایی و دارای قابلیت تولید توکسینهای سرطانزا میباشند. آگاهی از شرایط بهینهی رشد، به کنترل و ممانعت از آلودگی و سمزایی این قارچ‌ها کمک می‌کند. این آزمایش به منظور بررسی تأثیر دما، pH و میزان رطوبتبذر بر رشد این دو گونه قارچ اجرا شد. تاثیر رطوبت بذر (در سطوح 15، 18، 21، 24، 27 و 30 درصد) و دما (...
متن کاملControl of Aflatoxin Production of Aspergillus flavus and Aspergillus parasiticus Using RNA Silencing Technology by Targeting aflD (nor-1) Gene
Aspergillus flavus and Aspergillus parasiticus are important pathogens of cotton, corn, peanuts and other oil-seed crops, producing toxins both in the field and during storage. We have designed three siRNA sequences (Nor-Ia, Nor-Ib, Nor-Ic) to target the mRNA sequence of the aflD gene to examine the potential for using RNA silencing technology to control aflatoxin production. Thus, the effect of...
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ژورنال
عنوان ژورنال: World Mycotoxin Journal
سال: 2009
ISSN: 1875-0710,1875-0796
DOI: 10.3920/wmj2008.1108