nodule

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Related to nodulation: Root nodules

nodule:

see concretionconcretion,
mass or nodule of mineral matter, usually oval or nearly spherical in shape, and occurring in sedimentary rock. It is formed by the accumulation of mineral matter in the pore spaces of the sediment, usually around a fossil or fossil fragment acting as a nucleus.
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nodule

[′näj·ül]
(anatomy)
A small node.
A small aggregation of cells.
(botany)
A bulbous enlargement found on roots of legumes and certain other plants, whose formation is stimulated by symbiotic, nitrogen-fixing bacteria that colonize the roots.
(geology)
A small, hard mass or lump of a mineral or mineral aggregate characterized by a contrasting composition from and a greater hardness than the surrounding sediment or rock matrix in which it is embedded.
(medicine)
A primary skin lesion, seen as a circumscribed solid elevation.

nodule

1. any of the knoblike outgrowths on the roots of clover and many other legumes: contain bacteria involved in nitrogen fixation
2. Anatomy any small node or knoblike protuberance
3. a small rounded lump of rock or mineral substance, esp in a matrix of different rock material
References in periodicals archive ?
Evaluation of the best combination of fertilizer and cowpea varieties in order to optimum nodulation and highest amount of nitrogen fixation in Ahwaz, Iran, was purpose of this study.
Correlations between nodulation and biomass production were performed for each treatment by estimation of the correlation coefficient of Pearson (r).
It is expected that further research on rhizobial ecology will illustrate the relationship between population size in the rhizosphere and nodulation.
Increased nodulation may be good news for farmers who plant corn in rotation after soybeans.
16 Plant Hormones and Initiation of Legume Nodulation and Arbuscular Mycorrhization
Our previous study demonstrated increased nodulation in Trifolium exposed to root leachates from the Asiatic invasive tree Ailanthus altissima (Simaroubaceae).
Octopamine, a modulator of the haemocytic nodulation response of non-immune Galleria mellonella.
Effects of seed treatment with insecticide on the germination, nutrients, nodulation, yield and pest control in bean (Phaseolus vulgaris L.
These include transporters of major facilitator superfamily (MFS), small multidrug resistance family (SMR), resistance nodulation division family (RND) and multidrug and toxic compound extrusion family (MATE).
Nodulation, N2 Fixation (N) and N Nntrition relationships in Mycorrhizal and phosphate--amended alfalfa plants.
A phylogeny of the chloroplast gene rbcL in the Leguminosae: taxonomic correlations and insights into the evolution of nodulation.
Antagonistic to fungal pathogens has found to enhance nodulation by Mesorhizobium in chickpea (24).