PT  - JOURNAL ARTICLE
AU  - Anthony J. De Lucca
AU  - Maren Klich
AU  - Stephen Boue
AU  - Thomas E. Cleveland
AU  - Tien Sien
AU  - Thomas J. Walsh
TI  - Fungicidal Activity of Plant Saponin CAY-1 for Fungi Isolated from Diseased <em>Vitis</em> Fruit and Stems
AID  - 10.5344/ajev.2008.59.1.67
DP  - 2008 Mar 01
TA  - American Journal of Enology and Viticulture
PG  - 67--72
VI  - 59
IP  - 1
4099  - http://www.ajevonline.org/content/59/1/67.short
4100  - http://www.ajevonline.org/content/59/1/67.full
SO  - Am J Enol Vitic.2008 Mar 01; 59
AB  - Members of 10 fungal genera were isolated from diseased grape berries and stems collected in a local vineyard. These fungi were identified as Alternaria sp., Aspergillus japonicus, Cladosporium cladosporioides, Colletotrichum sp., Curvularia brachyspora, Epicoccum purpurascens, Greeneria uvicola, Nigrospora sphaerica, Trichoderma sp., Penicillium sclerotiorum and P. thomii. CAY-1, a fungicidal saponin in cayenne pepper (Capsicum frutescens) was significantly (p ≤ 0.05) lethal to the germinating (incubated 8 hr) but not the nongerminated (0 hr incubation) conidia of all the fungi except Alternaria and E. purpurascens at concentrations greater than 7.5 μM. CAY-1 was ineffective against the conidia of all the isolated fungi incubated 24 hr prior to mixing with the saponin. Results show that, in vitro, CAY-1 is lethal to these fungi only during their early germination cycle.