The Dynamic of Endophytic Bacteria at Different Growth Stage of Tomato and Biological Control of Tomato Bacterial Wilt
- VernacularTitle:抗感青枯病番茄的内生细菌数量动态分析及其对青枯病的生物防治
- Author:
Gang-Quan ZHOU
;
Xiu-Dong ZHANG
;
Qiong-Guang LIU
;
Hang FENG
;
- Publication Type:Journal Article
- Keywords:
Tomato, Endophytic bacteria, Bacterial wilt, Biological control
- From:
Microbiology
1992;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
The dynamic of endophytic bacteria at different growth stage of tomato and use of these endophytic bacteria to control tomato bacterial wilt were studied. The results showed that endophytic bacteria could be found in the tomato seeds and their quantities reached the highest peak in the adult plants both in resistant and susceptible cultivars. The amount of endophytic bacteria in adult plants of resistant tomato cultivars was 2.43?10~5CFU/g FW in the root and 22.9?10~4 CFU/g FW in the stem, while the amount of endophytic bacteria in adult plants of susceptible tomato cultivars was 9.8?10~4CFU/g FW in the root and 13.4?10~4CFU/g FW in the stem respectively. Seventeen strains of endophytic bacteria from resistant cultivars and only seven strains from susceptible cultivars were found to be antagonistic to Ralstonia solanacearum. In addition, some strains of endophytic bacteria had the abilities of promoting tomato seed germination and controlling tomato bacterial wilt, among which, strain 5R and 3R had better control effect of 91.7% and 81.3% respectively.
