Casuarina glauca Prenodule Cells Display the Same Differentiation as the Corresponding Nodule Cells
| Autor: | Didier Bogusz, Ton Bisseling, Katharina Pawlowski, Emile Duhoux, Laurent Laplaze, Sergio Svistoonoff, Thierry Frutz, Claudine Franche |
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| Rok vydání: | 2000 |
| Předmět: |
Nodule (geology)
Cell type Root nodule Nitrogen Physiology Frankia PLANTE TRANSGENIQUE Context (language use) Organogenesis Biology engineering.material Plant Roots Trees Transformation Genetic Nitrogen fixation Actinomycetales Botany Laboratorium voor Moleculaire Biologie PHYLOGENIE Primordium Hemoglobin SYMBIOSE Subtilisins Promoter Regions Genetic Symbiosis In Situ Hybridization Plant Proteins Actinorhiza nifH NODULE RACINAIRE FIXATION BIOLOGIQUE DE L'AZOTE Cell Differentiation General Medicine biology.organism_classification EVOLUTION DIFFERENCIATION Leghemoglobin engineering Laboratory of Molecular Biology MYCORHIZE EPS ANALYSE GENETIQUE Actinorhizal plant Agronomy and Crop Science |
| Zdroj: | Molecular Plant-Microbe Interactions 13 (2000) 1 Molecular Plant-Microbe Interactions, 13(1), 107-112 |
| ISSN: | 1943-7706 0894-0282 |
| Popis: | Recent phylogenetic studies have implied that all plants able to enter root nodule symbioses with nitrogen-fixing bacteria go back to a common ancestor (D. E. Soltis, P. S. Soltis, D. R. Morgan, S. M. Swensen, B. C. Mullin, J. M. Dowd, and P. G. Martin, Proc. Natl. Acad. Sci. USA, 92:2647–2651, 1995). However, nodules formed by plants from different groups are distinct in nodule organogenesis and structure. In most groups, nodule organogenesis involves the induction of cortical cell divisions. In legumes these divisions lead to the formation of a nodule primordium, while in non-legumes they lead to the formation of a so-called prenodule consisting of infected and un-infected cells. Nodule primordium formation does not involve prenodule cells, and the function of prenodules is not known. Here, we examine the differentiation of actinorhizal prenodule cells in comparison to nodule cells with regard to both symbionts. Our findings indicate that prenodules represent primitive symbiotic organs whose cell types display the same characteristics as their nodule counterparts. The results are discussed in the context of the evolution of root nodule symbioses. |
| Databáze: | OpenAIRE |
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