ISHS Acta Horticulturae 863: III International Symposium on Longan, Lychee, and other Fruit Trees in Sapindaceae Family
CONTROL EFFECTS ON LITCHI DOWNY BLIGHT DISEASE BY ENDOPHYTIC BACTERIAL STRAIN TB2 AND ITS PATHOGENESIS-RELATED PROTEINS |
| Authors: | X.Q. Cai, N. Lin, W. Chen, F.P. Hu |
| Keywords: | Bacillus amyloliquefaciens, endophytic bacteria, disease control mechanism, litchi downy blight disease |
| DOI: | 10.17660/ActaHortic.2010.863.89 |
| Abstract:
This study demonstrated that an endophytic bacterial strain TB2 (Bacillus amyloliquefaciens) had a good control effect on litchi downy blight disease (Peronophthora litchi). The control effect was 67.07% in 6 d after inoculation with strain TB2. The control mechanism could be that the endophytic bacterial increased the activities of  -1,3-glucanase and chitinase, 175.00 and 220.04%, higher than that of control in the 6 d after inoculation with the strain TB2, and also increased the contents of glutathione (GSH) and ascorbic acid (ASA), 10.66 and 86.65% separate.
However, the activities of peroxidase (POD) and polyphenol oxidase (PPO) (37.57 and 23.97%) were still lower.
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