Antimicrobial activities of momilactones against Xanthomonas oryzae and Pyricularia oryzae.

Abstract

Momilactones A and B were isolated as plant growth inhibitors from rice husks by Kato et al.1) In 1977, Cartwright et al.2) reported that momilactones A and B accumulated in rice leaves infected with rice blast fungus (Pyricularia oryzae) and were designated as the first phytoalexins from the Gramineae plants.

Stimulation of Mycelia Growth in Several Mushroom Species by Rice Husks

“…[8][9][10] Among these lipophilic antimicrobial compounds, momilactone A is more abundant than momilactone B, although it shows 5-10 times lower fungicidal activity than momilactone B. [10][11][12] Hence momilactone A (MLA) should be one of the components in the methanol extract and should play some role in the mycelia growth inhibition of C. cinereus. As shown in Fig.…”