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FLORA AND FAUNA Email Express http://www.terradaily.com/ 24/7 Coverage Of FLORA AND FAUNA in the 21st Century Now reproduction will not be possible without the geneticists. Auto Immune Response Creates Barrier To Fertility; Could Be A Step In Speciation Plant biologists at the Max Planck Institute of Developmental Biology and the University of North Carolina at Chapel Hill have discovered that an autoimmune response, triggered by a small number of genes, can be a barrier to producing a viable offspring. Studying Arabidopsis thaliana, sometimes called thale cress, the researchers identified a phenotype that, when paired together from a male and female, produced plants that survived only long enough to produce a few leaves, then died - a phenomenon called hybrid necrosis; literally, death. The dead plants resembled what would result from a mortal infection, despite the absence of a pathogen. CONTACT US: Editorial/Advertising 310-373-3169 (Los Angeles) or Mail: PO Box A447 - Sydney South, NSW Australia 1235 XML/RSS FEEDS NOW AVAILABLE + SpaceDaily XML :: TerraDaily XML :: SpaceWar XML Sign Up For More Of Our Daily Newsletters + GPS News - Disaster Management + Solar Energy - Nuclear Energy + Space Industry News - Mars Daily Express + Click here for our one-stop sign up page!