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Optimizing In vitro Culture Conditions for the Biotrophic Fungi Exobasidium vexans Through Response Surface
Chayanika Chaliha1, Eeshan Kalita1, Praveen K Verma2
11Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam 784028 India.
Indian Journal of Microbiology
|April 8, 2020
Summary
This study optimized fungal culture media for Exobasidium vexans, the cause of tea blister blight. Findings enable successful in vitro cultivation of this important plant pathogen.
Area of Science:
- Plant Pathology
- Mycology
- Agricultural Science
Background:
- Blister blight, caused by Exobasidium vexans, significantly impacts tea quality.
- Limited research exists on E. vexans due to difficulties in in vitro cultivation.
- The fungus's obligate biotrophic nature hinders laboratory studies.
Purpose of the Study:
- To optimize culture media for Exobasidium vexans growth.
- To overcome challenges in establishing and maintaining in vitro cultures of E. vexans.
- To facilitate further research into blister blight pathogenesis.
Main Methods:
- Response Surface Methodology (RSM) using Central Composite Design.
- Modification of three media types: Czapek Dox, Potato Dextrose, and V8 juice.
- Assessment of mycelial biomass as the response parameter.
Main Results:
- Statistically optimized conditions for maximal fungal growth were determined.
- Identified significant uni- and bi-parametric interactions affecting E. vexans growth.
- Established protocols for successful in vitro culture of E. vexans.
Conclusions:
- Modified media formulations support robust in vitro growth of Exobasidium vexans.
- This research provides a foundation for detailed studies on blister blight.
- Enables further investigation into the pathogenesis of E. vexans.
