Ralstonia Solanacearum Gene Regulation and Virulence Factors

A major virulence factor, facilitating pathogenesis and contributing to the plant's wilt or death.

As a major component of the outer membrane, it serves as the primary environmental interface.

The O-antigen repeating unit contains 3 rhamnose and 1 acetylglucosamine molecules, and its unique structure contributes to the bacterium's virulence.

<p>Flagella are not essential for pathogenesis once the bacteria are inside a tomato plant, but are produced in culture at high cell densities (10^7 and 10^9 cells ml^-1) and facilitate motility.</p> Signup and view all the answers

<p>The eps operon encodes many proteins involved in the EPS1 biosynthetic pathway, facilitating the production of this critical virulence factor.</p> Signup and view all the answers

<p>The EPS1 polymer is a major virulence factor, and approximately 80% of it is released as cell-free slime, facilitating the bacterium's ability to cause disease in plants.</p> Signup and view all the answers

<p>Pili (fimbriae) are protein appendages that contribute to the bacterium's virulence, although their specific role in pathogenesis is still unclear.</p> Signup and view all the answers

<p>Mutants of R. solanacearum unable to produce EPS1 are rarely able to wilt or kill plants, indicating the critical role of EPS1 in pathogenesis.</p> Signup and view all the answers

<p>The R. solanacearum-plant interaction is a critical model system for understanding the mechanisms of pathogenesis and developing strategies for crop protection.</p> Signup and view all the answers

<p>The T3SS is a critical component of R. solanacearum's pathogenic machinery, facilitating the delivery of bacterial virulence factors into the plant cell.</p> Signup and view all the answers