| polygalacturonase isozymes produced by phomopsis cucurbitae in relation to postharvest decay of cantaloupe fruit. | abstract production of polygalacturonase (pg), a cell wall-degrading enzyme, by phomopsis cucurbitae (latent infection fungus) was studied in relation to different carbon sources and various stages of cantaloupe fruit development. p. cucurbitae produced multiple pg isozymes both in vitro and in vivo. the fungus produced the highest pg activity and the greatest number of isozymes on pectin compared with those produced on glucose, galactose, and sucrose. eight p. cucurbitae pg isozymes (pis 3.7, 4 ... | 1997 | 18945035 |