Microbial Filtrates Improved Growth Parameters of In vitro PVX Infected Potato Plantlets
Rania S. Shehata
Department of Biology, Faculty of Science, Jazan University, Box 114, Jazan 45142, Kingdom of Saudi Arabia.
Hanan Moawod
Department of Biology, Faculty of Science, Jazan University, Box 114, Jazan 45142, Kingdom of Saudi Arabia.
Rehab A. Dawoud *
Department of Biology, Faculty of Science, Jazan University, Box 114, Jazan 45142, Kingdom of Saudi Arabia.
*Author to whom correspondence should be addressed.
Abstract
This study focuses on utilizing the phenomenon of systemic acquired resistance (SAR) to control plant viruses and increased growth in vitro. The study demonstrated the induction of SAR in potato plantlets against Potato Virus X by using bacterial culture filtrates invitro. These biotic inducers included Pseudomonas spp. and Bacillus spp. The study observed the occurrence of induced resistance and enhanced growth in potato plantlets treated with culture filtrates containing these microorganisms. This was evident through a reduction in PVX infection, disease severity and associated biochemical changes (such as elevated levels of endogenous salicylic acid, protein content, chlorophyll content, peroxidase and polyphenol oxidase activities), as well as improvements in growth parameters.
Keywords: PVX, Bacterial filtrate, micropropagation, growth parameters, protein content