We study the action of the mapping class group of an oriented genus g surface Sg,n with n punctures on a Poisson algebra which arises in the combinatorial description of Chern-Simons gauge theory on R × Sg,n when the gauge group is a semidirect product G ⋉ g . We prove that the mapping class group acts on this algebra via Poisson isomorphisms and express the action of Dehn twists in terms of an...

Los Oomycetes son un grupo de organismos que alberga géneros y especies destructivas plantas cultivadas silvestres. En México, especialmente en el Estado Sinaloa, la información sobre esos su presencia aguas superficiales empleadas para uso agrícola es escasa. Esta investigación se realizó con objetivo determinar del género Pythium irrigación Valle Culiacán, México. De septiembre 2018 a enero 2...

The objectives were to evaluate the effects of increasing metal micronutrient concentrations and silicon (Si) on plant growth susceptibility Pythium root rot with hydroponically grown lettuce (Lactuca sativa). In first experiment, was in hydroponic solutions micronutrients iron (Fe), manganese (Mn), copper (Cu), zinc (Zn) supplied at either 0, 2.5, 5, or 10 mg∙L−1. A standard commercial solutio...

Pilasporangium apinafurcum, formerly classified as Pythium apinafurcum, is a unique oomycete that infects plants asymptomatically. Here, we present the draft genome sequences of two variants of P. apinafurcum, JCM 30513 and JCM 30514, isolated from uncultivated field soil in Wakayama Prefecture, Japan.

Orfamide-type cyclic lipopeptides (CLPs) are biosurfactants produced by Pseudomonas and involved in lysis of oomycete zoospores, biocontrol of Rhizoctonia and insecticidal activity against aphids. In this study, we compared the biosynthesis, structural diversity, in vitro and in planta activities of orfamides produced by rhizosphere-derived Pseudomonas protegens and related Pseudomonas species....