Evolutionary duplication of lipo-oligochitin-like receptor genes in soybean differentiates their function in cell division and cell invasion

Indrasumunar, Arief and Gresshoff, Peter M. (2011) Evolutionary duplication of lipo-oligochitin-like receptor genes in soybean differentiates their function in cell division and cell invasion. Plant Signaling and Behavior, 6 4: 534-537. doi:10.4161/psb.6.4.14783


Author Indrasumunar, Arief
Gresshoff, Peter M.
Title Evolutionary duplication of lipo-oligochitin-like receptor genes in soybean differentiates their function in cell division and cell invasion
Journal name Plant Signaling and Behavior   Check publisher's open access policy
ISSN 1559-2316
1559-2324
Publication date 2011-04-01
Sub-type Other
DOI 10.4161/psb.6.4.14783
Volume 6
Issue 4
Start page 534
End page 537
Total pages 4
Place of publication Austin, TX, United States
Publisher Landes Bioscience
Language eng
Formatted abstract
Gene duplication in evolution has long been viewed as a mechanism for functional divergence. We recently cloned two related lipo-oligo-chitin receptor genes (GmNFR1α and GmNFR1β) in Glycine max(soybean) that allowed the distinction of two nodulation factor (NF) responses during early legume nodule ontogeny, namely invasion of the root hair and concomitant cortical cell divisions. Root-controlled GmNFR1αmutants nod49 and rj1 failed to form curled root hairs, infection threads and nodules but develop subepidermal cortical cell divisions (CCD) and mycorrhizal associations. In contrast GmNFR1β mutant PI437.654 had full symbiotic abilities. However, GmNFR1α mutants formed normal nodules at reduced frequency when inoculated with high Bradyrhizobium titers. The mutation was complemented in Agrobacterium rhizogenes K599 transformed roots using both CaMV 35S and the native GmNFR1promoters. GmNFR1α may encode a high affinity NF receptor responsible for the entire nodulation cascade while GmNFR1β with lower affinity to NF suffices to induce cell divisions but not early infection events.
© 2011 Landes Bioscience.
Keyword Cell division
Cell invasion
Gene duplication
Glycine max L. Merr.
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published under Article Addenda

Document type: Journal Article
Sub-type: Other
Collection: Centre for Integrative Legume Research Publications
 
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Created: Thu, 24 Feb 2011, 19:33:19 EST by Dr Arief Indrasumunar on behalf of Centre for Integrative Legume Research