Article Abstract:
The EIR1 gene of Arabidopsis, expressed only in roots, is in a family of plant genes similar in some ways to bacterial membrane transporters. The roots are agrabitropic and have less sensitivity to ethylene. Expression only in the root is consistent with the phenotypes of the eir1 mutants. Data indicate that the EIR1 protein has a root-specific role in transporting auxin. In Saccharomyces cerevisiae expression of the EIR1 gene gives resistance to fluorinated indolic compounds. Externally applied auxin gets a response from roots of eir1 mutants; they do not respond to the auxin generated internally.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
A quorum signaling pathway is described that links environmental sensing to morphogenesis in Saccharomyces cerevisiae. Saccharomyces cells secrete aromatic alcohols that stimulate morphogenesis by inducing the expression of FLO11 through a Tpk2p-dependent mechanism by which a quorum-sensing circuit is defined that allows Saccharomyces to respond to both cell density and the nutritional state of the environment.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
Plant growth homeostasis has been found to be controlled by the Arabidopsis BON1 and BAP1 genes. Data suggest the copine gene family, conserved from protozoa to humans, may act in the pathway of membrane trafficking as a response to external conditions. Expression of BON1 and BON1-associated protein (BAP1) is changed as temperature changes.
User Contributions:
Comment about this article or add new information about this topic: