In vitro Antagonism of Phytophthora cinnamomi and P. dtricola by Isolates of Trichoderma spp. and Gliocladium virens
Chambers. S. M Scott. E. S
Journal of Phytopathology ; 1995 [Vol.143] Pages:471-477
Abstract
Three fungi, isolated from soil from which Phytophthora was not obtained, were evaluated for antagonism of Phytophlhora spp, shown to cause root rot of chestnut in South Australia, Trichoderma iiatnatum and T. pseudokoningii appeared to inhibit P. cinnamomi by mycoparasitism. with evidence of parallel growth and coiling, and both Trichoderma spp, and Gliocladium lirciis grew over P cinnamomi in vitro, preventing further growth of this pathogen. Antibiotics produced by young T. hamatum cultures and G. lirens in culture filtrate experiments inhibited growth of P. cinnamomi and P. citricola. with filtrate from 4-day-old cultures of G. rirens showing the greatest potential for biocontrol, Al! three antagonists prevented F. cinnamomi and P. citricola from causing infection symptoms on micropropagated shoots of chestnut cvs Goldsworthy and Buffalo Queen in an in vitro excised shoot bioassay for biocontrol,
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