2001•Acta Phytopathologica SinicaRequires access

PHENOMENON AND MECHANISM OF DEPRESSION OF Xanthomonas oryzae pv. oryzae MULTIPLICATION IN INCOMPATIBLE RICE SUSPENSION CELL LINE

Gao Xue

Abstract

Kinetics of Xanthomonas oryzae pv. oryzae multiplication in rice suspension cell and effect of various extracellular substances in rice suspension cell on X.oryzae pv. oryzae multiplication was studied. The results indicate that quantity of X.oryzae pv. oryzae multiplication was obviously less in the suspension cell of the incompatible IRBB4 than it was in suspension cells of the compatible IRBB3 or the compatible IR24. X.oryzae pv. oryzae multiplication was not depressed by extracellular crude protein of rice suspension cell. Bihydric phenol of rice suspension cell increased remarkably in incompatible interaction but unremarkably in compatible interaction. The transcription and the translation of PO and PAL gene were detected in incompatible interaction. The result indicated depression of X. oryzae pv. oryzae multiplication in suspension cells of IRBB4 was related to start of rice defence reaction.

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Key concepts: Xanthomonas oryzae pv. oryzae, Xanthomonas oryzae, Extracellular, Biology, Suspension culture, Suspension (topology), Oryza sativa, Cell culture