Posts Tagged ‘Plants’

TRANSGENIC TOBACCO PLANTS FOR ENHANCED BIOETHANOL PRODUCTION

Genetically modified tobacco plants are provided having altered hexose accumulation. Methods are provided for producing ethanol from fermentation of tobacco biomass derived from the tobacco plants having altered hexose accumulation. The altered hexose …

Bacteria establish an aqueous living space in plants crucial for virulence

High humidity has a strong influence on the development of numerous diseases affecting the above-ground parts of plants (the phyllosphere) in crop fields and natural ecosystems, but the molecular basis of this humidity effect is not understood. Previous studies have emphasized immune suppression as a key step in bacterial pathogenesis. Here we show that humidity-dependent, pathogen-driven establishment of an aqueous intercellular space (apoplast) is another important step in bacterial infection of the phyllosphere. Bacterial effectors, such as Pseudomonas syringae HopM1, induce establishment of the aqueous apoplast and are sufficient to transform non-pathogenic P. syringae strains into virulent pathogens in immunodeficient Arabidopsis thaliana under high humidity. Arabidopsis quadruple mutants simultaneously defective in a host target (AtMIN7) of HopM1 and in pattern-triggered immunity could not only be used to reconstitute the basic features of bacterial infection, but also exhibited humidity-dependent dyshomeostasis of the endophytic commensal bacterial community in the phyllosphere. These results highlight a new conceptual framework for understanding diverse phyllosphere–bacterial interactions.

Antarctotrechus balli sp. n. (Carabidae, Trechini): the first ground beetle from Antarctica

ZooKeys 635: 109-122
DOI: 10.3897/zookeys.635.10535
Authors: Allan C. Ashworth, Terry L. Erwin
Abstract: Fossil elytra of a small trechine carabid are reported from the Oliver Bluffs on the Beardmore Glacier at lat. 85°S. They wer…

Powered by WordPress | Designed by: video game | Thanks to search engine optimization, seo agency and Privater Sicherheitsdienst