Inhibitory activity of analogs of AM-toxin, a host-specific phytotoxin from the Alternaria alternata apple pathotype, on photosynthetic O2 evolution in apple leaves

Miyashita, M.; Nakamori, T.; Miyagawa, H.; Akamatsu, M.; Ueno, T.

Bioscience Biotechnology and Biochemistry 67(3): 635-638

2003


ISSN/ISBN: 0916-8451
PMID: 12723616
DOI: 10.1271/bbb.67.635
Accession: 003817832

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Abstract
The effect of the host-specific phytotoxins, AM-toxins, on the photosynthetic activity of leaves from susceptible apple cultivars was investigated by using an oxygen electrode. The photosynthetic O2 evolution was inhibited by AM-toxin I in a host-specific manner. The inhibitory activity of several AM-toxin analogs against photosynthesis was also evaluated and the findings were correlated with their necrosis-inducing activity.