Xanthomonas oryzae pv. oryzae XKK.12 contains an AroQgamma chorismate mutase that is involved in rice virulence

Phytopathology
Giuliano DegrassiVittorio Venturi

Abstract

Chorismate mutase (CM) is a key enzyme in the shikimate pathway which is responsible for the synthesis of aromatic amino acids. There are two classes of CMs, AroQ and AroH, and several pathogenic bacteria have been reported to possess a subgroup of CMs designated AroQ(gamma). These CMs are usually exported to the periplasm or outside the cell; in a few cases, they have been reported to be involved in virulence and their precise role is currently unknown. Here, we report that the important rice pathogen Xanthomonas oryzae pv. oryzae XKK.12 produces an AroQ(gamma) CM which we have purified and characterized from spent supernatants. This enzyme is synthesized in planta and X. oryzae pv. oryzae knock-out mutants are hypervirulent to rice. The role of this enzyme in X. oryzae pv. oryzae rice virulence is discussed.

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Citations

Jan 26, 2011·Molecular Plant-microbe Interactions : MPMI·Yinping GuoNian Wang
Oct 16, 2015·FEMS Microbiology Reviews·Neil A BrownKim E Hammond-Kosack
Oct 23, 2012·Molecular Plant Pathology·Juan F GonzálezVittorio Venturi
Jul 28, 2012·Journal of Proteomics·Juan F GonzálezVittorio Venturi
Nov 6, 2014·MBio·Abigail Manson McGuireAshlee M Earl
Oct 15, 2020·International Journal of Molecular Sciences·Cíntia H D SagawaAbhaya M Dandekar

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