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Updated: Nov 8, 2025

Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean
Published on: December 23, 2017
Occurrence of nodulation in the Leguminosae.
S M DE Faria1, G P Lewis2, J I Sprent3
1EMBRAPA-UAPNPBS, Km 47 Seropédica, RJ, Brazil.
Legume family (Leguminosae) nodulation patterns were analyzed. Most subfamilies show consistent nodulation, with specific tribes and genera exhibiting exceptions, revealing uniform yet varied nitrogen-fixing symbiosis across the family.
Area of Science:
- Botany
- Plant Science
- Microbiology
Background:
- Legume (Leguminosae) nodulation is a crucial symbiotic process involving nitrogen fixation.
- Understanding nodulation patterns aids in legume taxonomy and agricultural applications.
Purpose of the Study:
- To review and analyze reports of nodulation within the Leguminosae family.
- To correlate nodulation occurrence with current taxonomic classifications.
Main Methods:
- Literature review of nodulation studies in Leguminosae.
- Comparison of nodulation data with family taxonomy.
Main Results:
- Nodulation in Caesalpinioideae is mainly in Caesalpinieae and Chamaecrista (Cassieae), with rhizobia retained in infection threads.
- Mimosoideae generally nodulate, with exceptions in Mimoseae and Acacia.
- Papilionoideae show exceptions in Dipterygeae and some Swartzieae genera.
Conclusions:
- Nodulation within the Leguminosae family exhibits a largely uniform pattern.
- Specific clades within subfamilies consistently nodulate or do not nodulate, reflecting taxonomic relationships.
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