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Activity against plant pathogenic fungi of phomalactone isolated from Nigrospora sphaerica
Author(s) -
Kim JinCheol,
Choi Gyung Ja,
Park JoongHyeop,
Kim Heung Tae,
Cho Kwang Yun
Publication year - 2001
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.318
Subject(s) - phytophthora infestans , sporangium , biology , zoospore , mycelium , blight , phytophthora capsici , botany , phycomycetes , germination , inoculation , phytophthora , horticulture , spore
Phomalactone, 5,6‐dihydro‐5‐hydroxy‐6‐prop‐2‐enyl‐2 H ‐pyran‐2‐one, produced by the fungus Nigrospora sphaerica , was tested in vitro against nine plant pathogenic fungi, and specifically inhibited the mycelial growth of Phytophthora infestans , with an MIC value of 2.5 mg litre −1 . Its inhibitory activities against sporangium and zoospore germination of P infestans were similar to those against Phytophthora capsici. In vivo , at 100 and 500 mg litre −1 , it reduced the development of tomato late blight caused by P infestans . © 2001 Society of Chemical Industry