COMPOSITION AND DISTRIBUTION OF Xanthomonas oryzae pv. oryzae PATHOTYPES, THE PATHOGEN OF RICE BACTERIAL LEAF BLIGHT IN INDONESIA
Abstract: This research aimed
to determine the composition and pathotype distribution of Xanthomonas oryzae
pv. oryzae (Xoo) in several rice producing centers in Indonesia during the
growing season of 2010-2013. The studies were conducted into three phases of
activities, namely: sampling and collection of infected leaves from the
representative rice growing areas; isolation and purification of the Xoo
isolates; and evaluation of composition and pathotype of Xoo on five rice differential
varieties. Results indicated that a total of 2,658 isolates Xoo have been
isolated from 10 provinces representing rice ecosystem in Indonesia during the
growing season from 2010-2013. Evaluating these Xoo isolates against five
differential varieties revealed that these Xoo isolates consisted of three
pathotypes III, IV, and VIII with a total of 30, 36, and 34%, respectively. The
data also indicated that two pathotypes III and IV were dominant in three
provinces, while the pathotype VIII was dominant in four provinces. As
mentioned previously, such information are useful in designing strategy of
integrating components of technologies combined in the management of Bacterial
leaf blight (BLB) occurrences in a particular endemic areas.
Author: Sudir, Dini Yuliani
Journal Code: jppertaniangg160023
