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ARS Home » Research » Publications at this Location » Publication #58441
Title: REGULATION OF METABOLITE PRODUCTION BY BIOCONTROL AGENTS IN LIQUID CULTURE: POTENTIAL IMPACT ON THE BIOEFFICACY AND PHYTOTOXICITY OF CELL HARVESTS FORMULATED FOR CROP PROTECTION

Author
item Slininger, Patricia - Pat
item Van Cauwenberge, James
item SHEA WILBUR, MAUREEN - 3620-65-00
item Bothast, Rodney

Submitted to: International Conference on Plant Growth Substances Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 7/18/1995
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Liquid culture technologies are being developed to mass produce fluorescent pseudomonads that can be applied as seed inoculants to biocontrol take-all, an important root disease of wheat. Nutritional and physical conditions of the culture environment were controlled in fermentors to regulate antibiotic and phytotoxin accumulations during production of Pseudomonas fluorescens 2-79. Culture harvests formulated in 0.5% methylcellulose wer applied as seed coatings, which provide an economical method of targeting the inoculation of emerging roots. Inoculum survival, as well as seed germination, take-all suppression, and seedling development observed in growth chamber bioassays were influenced by the liquid culture production conditions of the biocontrol agents.