Efecto de la adición de lectina específica sobre la simbiosis Rhizobium leguminosarum--Phaseolus vulgaris / Effect of the addition of specific lectin on the symbiosis of Rhizobium leguminosarum and Phaseolus vulgaris
Rev. argent. microbiol
;
31(2): 72-77, abr.-jun. 1999.
Article
in Spanish
| LILACS
| ID: lil-333170
RESUMO
The effect of specific lectin addition on Rhizobium leguminosarum-Phaseolus vulgaris symbiosis characteristics was studied. Two alternatives were selected for comparison: a) P. vulgaris seedling roots treated with lectin were inoculated with R. leguminosarum and b) P. vulgaris seedling roots were inoculated with R. leguminosarum incubated with lectin for 3 h and 72 h. The following parameters were evaluated: number and dry weight of nodules and dry matter and nitrogen content of shoot. In lectin treatments, the weight of nodules (from 13 to 35), dry matter (from 6 to 18) and nitrogen content (from 5 to 28) increased significantly. The results suggest a stimulation in the formation of functional-nodules, specially in root (a) and Rhizobium (b) 72 h treatments. That is consistent with a model in which the lectin functions as an extracellular matrix component of the root interacting with roots and Rhizobium s.p. receptors.
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Index:
LILACS (Americas)
Main subject:
Phytohemagglutinins
/
Plants, Medicinal
/
Symbiosis
/
Rhizobium leguminosarum
/
Fabaceae
/
Nitrogen Fixation
Type of study:
Prognostic study
Language:
Spanish
Journal:
Rev. argent. microbiol
Journal subject:
Microbiology
Year:
1999
Type:
Article
Affiliation country:
Argentina
Institution/Affiliation country:
Universidad Nacional de Córdoba/AR
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