Journal
TRENDS IN PLANT SCIENCE
Volume 13, Issue 3, Pages 115-120Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2008.01.003
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Funding
- Biotechnology and Biological Sciences Research Council [BB/G023832/1] Funding Source: Medline
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The symbiotic interaction between Rhizobium bacteria and legumes leads to the induction of a new root organ: the nitrogen-fixing nodule. Recent findings have uncovered that cytokinin is instrumental in this developmental process, but they also suggest a broader role for cytokinin in mediating rhizobial infection. In this opinion article, we propose that cytokinin is the key differentiation signal for nodule organogenesis. Furthermore, we discuss a model in which cytokinin might also influence bacterial infection by controlling the expression of NIN (Nodule Inception) and other transcriptional regulators through mechanisms operating both locally and systemically.
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