Journal
NEW PHYTOLOGIST
Volume 181, Issue 4, Pages 913-923Publisher
WILEY
DOI: 10.1111/j.1469-8137.2008.02723.x
Keywords
ineffective nodules; infection thread; nodule meristem; nodule primordium; pea-Rhizobium symbiosis; symbiotic genes
Categories
Funding
- Russian Foundation for Basic Research [06-04-89000, 07-04-01171, 07-04-01558, 07-04-13566, 08-04-01710, 08-04-01656, 09-04-91293-INIS_a, 09-04-91054-NTsNI_a]
- President of the Russian Federation [HIII-5399.2008.4]
- Russian governmental contracts for research [02.512.11.2182, 02.512.11.2254]
- Council of Burgundy [07.9201 AA040 S3623]
- NWO [047.018.001]
- Alexander von Humboldt Research Fellowship [IV-RUS/1113591]
Ask authors/readers for more resources
A comparative analysis of nodule morphogenesis was carried out for three symbiotically defective pea (Pisum sativum) mutants that show abnormalities in nodule development. In the wild-type lines, resumption of cell proliferation in the pericycle and inner cortex results in the development of a nodule primordium, within which are found proliferating cells that harbour infection threads. However, this class of cell is not observed in the mutants RisFixA (sym41) and SGEFix(-)-2 (sym33) where nodule development is arrested at the point of formation of the apical nodule meristem. It is proposed that the presence of proliferating cells harbouring infection threads is a prerequisite for normal formation of the nodule meristem. In mutant SGEFix(-)-1 (sym40), nodule development does not differ from that of wild-type plants in the early stages but is blocked at the stage after nodule meristem persistence. A scheme is proposed for the sequential functioning of pea symbiotic genes Sym33, Sym40 and Sym41 in the programme of nodule development. New Phytologist (2009) 181: 913-923doi: 10.1111/j.1469-8137.2008.02723.x.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available