Chitosan Enhances Efficacy of Pseudomonas sp. Against Tomato Leaf Curl Virus
April 10, 2014| |
The tomato leaf curl virus (ToLCV) is one of the most destructive diseases in terms of quantitative and qualitative yield losses. There has been several researches done but no economically viable management practices are able to manage ToLCV.
However, a study was recently conducted in India to evaluate the potency of previously proven potent rhizobacterial isolates against ToLCV in the field. They used rhizobacterial isolates as well as different formulations of these isolates and chitosan, an elicitor molecule. It was found that the isolate Pseudomonas sp. in combination with chitosan reduces the severity of the ToLCV disease by as high as 90.33%. It also recorded the maximum plant height, total biomass, chlorophyll content, fruit number and yield over the diseased control. It was also found that using the bacterial isolate or chitosan alone was not effective.
The lowest viral load was also observed in plants inoculated with the combination of Pseudomonas isolates and chitosan. These results indicate that addition of chitosan has enhanced the biocontrol efficacy of Pseudomonas sp. against ToLCV.
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