The role of glycerol in the pathogenic lifestyle of the rice blast fungus Magnaporthe oryzae

Foster, Andrew J., Ryder, Lauren S., Kershaw, Michael J. and Talbot, Nicholas J. (2017) The role of glycerol in the pathogenic lifestyle of the rice blast fungus Magnaporthe oryzae. Environmental Microbiology, 19 (3). pp. 1008-1016. ISSN 1462-2912

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Abstract

The rice blast fungus Magnaporthe oryzae elaborates a specialized cell called an appressorium, which is used to breach the tough outer cuticle of a rice leaf, enabling the fungus entry to host plant cells. The appressorium generates enormous turgor by accumulating glycerol to very high concentrations within the cell. Glycerol accumulation and melanization of the appressorium cell wall collectively drive turgor-mediated penetration of the rice leaf. In this review, we discuss the potential metabolic sources of glycerol in the rice blast fungus and how appressorium turgor is focused as physical force at the base of the infection cell, leading to the formation of a rigid penetration peg. We review recent studies of M. oryzae and other relevant appressorium-forming fungi which shed light on how glycerol is synthesized and how appressorium turgor is regulated. Finally, we provide some questions to guide avenues of future research that will be important in fully understanding the role of glycerol in rice blast disease.

Item Type: Article
Uncontrolled Keywords: mediated plant infection,glycerol-3-phosphate dehydrogenase,saccharomyces-cerevisiae,turgor regulation,aspergillus-nidulans,appressorium turgor,functional-analysis,analysis reveals,lipid droplets,osmotic-stress
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Depositing User: LivePure Connector
Date Deposited: 15 Feb 2019 13:30
Last Modified: 25 Jul 2019 02:07
URI: https://ueaeprints.uea.ac.uk/id/eprint/69949
DOI: 10.1111/1462-2920.13688

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