기원이 다른 저항성 유전자를 갖는 근동질 계통에서 Xanthomonas oryzae pv. oryzae의 증식과 이동

The multiplication and movement of Xanthomonas oryzae pv. oryzae in rice leaves of seven near-isogenic lines(NILs) derived from different genetic sources and from the susceptible cultivar Toyonishiki were examined. The bacterium populations increased rapidly in susceptible cultivar leaves of the inoculation sites but increased gradually in NIL leaves. X. oryzae pv. oryzae were detected at 20㎝ above the leaves of the inoculated sites in IREB 103 and Toyonishiki but were not detected in the other NILs at 25 days after inoculation. These results support that resistant genes restrict bacterial movement not multiplication.