Occurrence of pyrrocidine and dihydroresorcylide production amongAcremonium zeaepopulations from maize grown in different regions

Autor:	Richard C. Summerbell, Stephen M. Poling, Donald T. Wicklow
Rok vydání:	2008
Předmět:	biology Acremonium zeae fungi food and beverages Plant Science Fungus biology.organism_classification Endophyte Zea mays chemistry.chemical_compound Agronomy chemistry Botany Temperate climate Dihydroresorcylide Mycotoxin Agronomy and Crop Science
Zdroj:	Canadian Journal of Plant Pathology. 30:425-433
ISSN:	1715-2992 0706-0661
DOI:	10.1080/07060660809507540
Popis:	Acremonium zeae is recognized as a protective endophyte of maize (Zea mays). Thus, it is a potential confounding variable in maize variety trials for resistance to pathogenic microbes and their mycotoxins. This fungus grows systemically in maize and produces pyrrocidines A and B, polyketide – amino acid derived antibiotics exhibiting potent in vitro activity against major stalk- and ear-rot pathogens of maize. An evaluation of a number of A. zeae isolates accessioned by the USDA Agricultural Research Service Culture Collection (NRRL) and CBS Culture Collections from 1969 to 1992 revealed that pyrrocidines were produced by 5 of 11 isolates from maize grown in regions sharing a milder temperate climate with cold winters (e.g., Illinois, Nebraska, and Germany) and by 10 of 12 isolates from maize grown in warmer regions (e.g., North Carolina and Georgia, USA; Iran; and India). Cultures of A. zeae representing 13 populations isolated from maize seeds harvested from different regions and years were grown on pot...
Databáze:	OpenAIRE
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