Conservation and innovation in plant signaling pathways

Article Abstract:

The distinctiveness of the signal trasduction pathways in plants as opposed to those in animals is presented. The unique needs of sessile organisms to sense the external environment are as important as intra-and inter-cellular communication within the organism. Auxin, phytochrome, and ethylene signal transduction pathways are discussed.

Research, Plant physiology, Phytochrome

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Plant responses to ethylene gas are mediated by SCF(sup)EBF1/EBF2 -dependent proteolysis of EIN3 transcription factor

Article Abstract:

Research shows that the key step in the response to ethylene is regulation of Arabidopsis EIN3 protein. Results indicate that a ubiquitin/proteasome pathway negatively regulates ethylene response by degrading EIN3 protein. Furthermore, EIN3 protein levels increase in response to ethylene.

Pesticide and Other Agricultural Chemical Manufacturing, Agricultural chemicals, not elsewhere classified, Plant Growth Regulators, Protein metabolism

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EIN3-dependent regulation of plant ethylene hormone signaling by two Arabidopsis F box proteins: EBF1 and EBF2

Article Abstract:

Research demonstrates that Arabidopsis F box proteins EBF1 and EBF2 interact with EIN3/EIL transcription factors. Data indicate that mutations in the ebf1 and ebf2 genes confer a constitutive response to ethylene and cause EIN3 protein accumulation in the absence of ethylene, suggesting that ethylene action requires EIN3 protein stabilization.

Germany, France

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