Association of Gluconacetobacter diazotrophicus with roots of common bean (Phaseolus vulgaris) seedlings is promoted in vitro by UV light

2006 ◽  
Vol 84 (2) ◽  
pp. 321-327 ◽  
Author(s):  
Alejandra Trujillo-López ◽  
Oscar Camargo-Zendejas ◽  
Rafael Salgado-Garciglia ◽  
Horacio Cano-Camacho ◽  
Víctor M. Baizabal-Aguirre ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Secondary Metabolite ◽  
Uv Light ◽  
Root Hairs ◽  
Bacterial Cells ◽  
Gluconacetobacter Diazotrophicus ◽  
Seedling Roots ◽  
Metabolite Accumulation

Gluconacetobacter diazotrophicus is a diazotrophic endophyte that is a potential biofertilizer. Little is known about the mechanisms of G. diazotrophicus interaction with its host plants. We tested the effect of UV light, as an inducer of secondary metabolite accumulation, on the association between common bean ( Phaseolus vulgaris L.) seedling roots and G. diazotrophicus. UV light irradiation of seedlings 4 h prior to bacterial inoculation increased the number of bacterial cells associated with the roots by 5.65-fold with respect to a nonirradiated control (p < 0.05). Gluconacetobacter diazotrophicus associates with root hairs and root border cells. Aggregation of bacterial cells was observed in root structures from UV-induced seedlings. Secondary metabolite accumulation was also observed in roots from UV-irradiated seedlings.

Erratum: Association of Gluconacetobacter diazotrophicus with roots of common bean (Phaseolus vulgaris) seedings is promoted in vitro by UV light

2006 ◽  
Vol 84 (3) ◽  
pp. 514 ◽  
Author(s):  
Alejandra Trujillo-López ◽  
Oscar Camargo-Zendejas ◽  
Rafael Salgado-Garciglia ◽  
Horacio Cano-Camacho ◽  
Víctor M. Baizabal-Aguirre ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Uv Light ◽  
Gluconacetobacter Diazotrophicus

scholarly journals Method for evaluation of root hairs of common bean genotypes

2007 ◽  
Vol 42 (9) ◽  
pp. 1365-1368 ◽  
Author(s):  
Rogério Faria Vieira ◽  
Celestina Nhagupana Jochua ◽  
Jonathan Paul Lynch
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Trypan Blue ◽  
Rating Scale ◽  
Root Hairs ◽  
Phosphorus Addition ◽  
Simple Method ◽  
Breeding Programs ◽  
Primary Roots ◽  
The Mean

The objective of this work was to test a simple method for root hair evaluation of 21 common bean (Phaseolus vulgaris) genotypes, most of them used in breeding programs in Brazil. Hairs of basal and primary roots of 5-day old seedlings, produced on germination paper with no phosphorus addition, were visually evaluated by a rating scale after staining with 0.05% trypan blue. The method reveals variability among the genotypes, and the standard error of the mean is relatively low.

Gluconacetobacter diazotrophicus exopolysaccharide protects bacterial cells against oxidative stress in vitro and during rice plant colonization

2017 ◽  
Vol 416 (1-2) ◽  
pp. 133-147 ◽  
Author(s):  
C. Meneses ◽  
T. Gonçalves ◽  
S. Alquéres ◽  
L. Rouws ◽  
R. Serrato ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Rice Plant ◽  
Plant Colonization ◽  
Bacterial Cells ◽  
Gluconacetobacter Diazotrophicus

Effect of the Addition of Common Bean (Phaseolus vulgaris L.) Flour on the In Vitro Digestibility of Starch and Undigestible Carbohydrates in Spaghetti

2010 ◽  
pp. no-no ◽  
Author(s):  
Jose-Alberto Gallegos-Infante ◽  
Luis Arturo Bello-Perez ◽  
Nuria Elizabeth Rocha-Guzman ◽  
Ruben Francisco Gonzalez-Laredo ◽  
Martha Avila-Ontiveros
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
In Vitro Digestibility ◽  
Phaseolus Vulgaris L

scholarly journals MAMP-triggered resistance induced by elicitor protein PeBA1 derived from Bacillus amyloliquefaciens NC6 in common bean (Phaseolus vulgaris L.) against green peach aphid (Myzus persicae Sulzer)

2020 ◽  
Vol 48 (2) ◽  
pp. 705-715
Author(s):  
Abdul BASIT ◽  
Tala NAZIR ◽  
Abdul HANAN ◽  
Muhammad Z. MAJEED ◽  
Muhammad FARHAN ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Myzus Persicae ◽  
Bacillus Amyloliquefaciens ◽  
Insect Pests ◽  
Foliar Application ◽  
Green Peach Aphid ◽  
Management Tool ◽  
Expression Levels

Bacterial microbe-associated molecular patterns (MAMPs) play an important role in innate plant immunity. This in vitro study evaluated the putative role of protein elicitor PeBA1 derived from Bacillus amyloliquefaciens NC6 strain in eliciting induced resistance type responses in common bean (Phaseolus vulgaris) plants against green peach aphid Myzus persicae. Nymphal developmental time of aphids was significantly prolonged and the fecundity was significantly reduced by different concentrations of PeBA1 elicitor (i.e. 40.51, 24.91 and 16.38 µg mL-1) applied at three different temperature regimes (i.e. 21, 27 and 30 °C). Moreover, foliar application of PeBA1 elicitor protein strongly up-regulated the expression levels of salicylic acid (SA) pathway-associated genes, while the expression levels of jasmonic acid (JA) pathway-associated genes exhibited a moderate induction. Quantification by LC/MSMS revealed a linear increase of both SA and JA plant defense hormones along with the time of exposure. Our findings suggest that the bacterial elicitor protein PeBA1 could be used as an effective biological pest management tool against phloem-feeding insect pests such as green peach aphids M. persicae.

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