Format

Send to

Choose Destination
Trends Plant Sci. 2009 Feb;14(2):77-86. doi: 10.1016/j.tplants.2008.11.009. Epub 2009 Jan 21.

Evolution of root endosymbiosis with bacteria: How novel are nodules?

Author information

1
Genetics, Faculty of Biology, Ludwig Maximilians Universit├Ąt, Munich, Germany. kama@mb.au.dk

Abstract

Plants form diverse symbioses with nitrogen-fixing bacteria to gain access to ammonium, a product of the prokaryote-exclusive enzyme nitrogenase. Improving the symbiotic effectiveness of crop plants like maize, wheat or rice is a highly topical challenge and could help reduce the need for energy-intense nitrogen fertilizer in staple food production. Root nodule symbiosis (RNS) constitutes one of the most productive nitrogen-fixing systems, but it is restricted to a small group of related angiosperms. Here, we review the genetic regulation of RNS and its interconnections with other plant symbiosis or plant developmental programs. Since RNS uses genetic programs that are widely conserved in land plants, we evaluate the prospects for a transfer to plants that are currently non-nodulating.

PMID:
19167260
DOI:
10.1016/j.tplants.2008.11.009
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center