Journal
BIOLOGICAL CONTROL
Volume 56, Issue 1, Pages 2-8Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biocontrol.2010.09.012
Keywords
Papaya fruit; P. putida; C. gloeosporioides; Disease resistance; Defense enzymes
Categories
Funding
- National Natural Science Foundation of China [U0631004]
- Guangdong Science Foundation [06200670]
Ask authors/readers for more resources
An endophytic bacterium named Pseudomonas putida MGY2 was isolated from papaya fruit. The effect of MGY2 on reducing anthracnose caused by Colletotrichum gloeosporioides infection in harvested papaya fruit and the possible mechanisms involved were investigated. Fruit treated with MGY2 showed a significant lower disease index, disease incidence, and lesion diameter than the control. MGY2 reduced the decrease in firmness and delayed the peak of ethylene production of harvested papaya fruit stored at 25 degrees C. MGY2 also significantly enhanced the activities of phenylalanine ammonia-lyase (PAL), catalase (CAT), and peroxidase (POD) and increased the phenolic content. The expression levels of PAL1, CAT1, and POD genes were obviously elevated in MGY2-treated fruit. These results suggested that papaya fruit is capable of responding to the endophyte P. putida MGY2, which could activate defensive enzymes and genes and thereby induce host disease resistance. Crown Copyright (C) 2010 Published by Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available