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Oligosaccharide signals in plants: a current assessment
Annual Review of Plant Physiology and Plant Molecular Biology
Roles for oligosaccharides as signals for activating defensive and de velopmental processes have continued to be reported and supported in the recent literature. Studies of recognition events employing defined oligosac charides indicate that oligosaccharides interact with cellular membrane recep tors in a hormone-like manner to affect gene regulation. Recent studies concerning the regulation of signal production (e.g. studies of the roles PGIPs play in regulating the effective half-lives of oligouronides in infected tissue; and investigations of possible roles for cell wall fragments in morphogenesis, hypersensitivity, fruit ripening, and cell elongation) provide further evidence that oligosaccharides signal developmental responses. In plants, as in an imals , our understanding of how complex carbohydrates may function i n signaling and recognition systems is still in its infancy.
developmental signals, defense gene signals, signal transduction, oligouronide signaling, oligosaccharide elicitors
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