Abstract:
:ABSTRACT To explore the potential for nontoxic crop protection technologies based on the inhibition of fungal spore adhesion, we have tested the effect of synthetic zosteric acid (p-(sulfo-oxy) cinnamic acid), a naturally occurring phenolic acid in eelgrass (Zostera marina L.) plants, on spore adhesion and infection in two pathosystems: rice blast caused by Magnaporthe grisea and bean anthracnose caused by Colletotrichum lindemuthianum. We have shown that zosteric acid inhibits spore adhesion to model and host leaf surfaces and that any attached spores fail to develop appressoria, and consequently do not infect leaf cells. Low concentrations of zosteric acid that are effective in inhibiting adhesion are not toxic to either fungus or to the host. The inhibition of spore adhesion in the rice blast pathogen is fully reversible. On plants, zosteric acid reduced (rice) or delayed (bean) lesion development. These results suggest that there is potential for novel and environmentally benign crop protection technologies based on manipulating adhesion.
journal_name
Phytopathologyjournal_title
Phytopathologyauthors
Stanley MS,Callow ME,Perry R,Alberte RS,Smith R,Callow JAdoi
10.1094/PHYTO.2002.92.4.378subject
Has Abstractpub_date
2002-04-01 00:00:00pages
378-83issue
4eissn
0031-949Xissn
1943-7684journal_volume
92pub_type
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