scholarly journals Snap beans for organic farming and evaluation of resistance to the common bacterial blight

2017 ◽  
Vol 35 (3) ◽  
pp. 385-389 ◽  
Author(s):  
Felipe A Andrade ◽  
Leandro SA Gonçalves ◽  
Anderson Fukuji ◽  
Édison Miglioranza ◽  
Lúcia SA Takahashi ◽  
...  
Keyword(s):  
Organic Farming ◽  
Bacterial Blight ◽  
Field Experiments ◽  
Common Bacterial Blight ◽  
Breeding Programs ◽  
Income Source ◽  
Snap Beans ◽  
Progress Curve ◽  
Organic Farmers ◽  
The Common

ABSTRACT Snap beans have been widely used in organic farming as a good income source and an alternative to diversify production, with increasing use in crop rotation. This work reports the evaluation of 25 bush-type snap beans accessions for their suitability to integrate a breeding program for organic farming, as well as for their resistance to the common bacterial blight (CBB). Agronomic performance was assessed in two field experiments (September-December, 2013; April-June, 2014), in complete blocks at random, while resistance to CBB was assessed in greenhouse, in a completely randomized trial. Plants were challenged with two isolates, one from Xanthomonas axonopodis pv. phaseoli and another from X. fuscans subsp. fuscans. Accessions UEL 402, UEL 405, UEL 407, UEL 408, UEL 412, UEL 417 and UEL 420 were highly productive in both seasons (averages of 10.3, 8.7, 9.5, 9.2, 8.9, 9.3 and 9.2 t/ha, respectively), and are promising for use both as cultivars by organic farmers in the region of Londrina and also as germplasm in breeding programs for developing cultivars adapted to the region. Although all accessions were moderately susceptible to CBB, accessions UEL 407, UEL 409, UEL 411, UEL 412, UEL 424 and UEL 431 presented the lowest values for the area under CBB progress curve for both isolates.

scholarly journals Management of the Common Bacterial Blight of the Bean by Rhodotorula glutinis and Sporidiobolus johnsonii

2020 ◽  
Vol 12 (11) ◽  
pp. 141
Author(s):  
Jeferson C. Carvalho ◽  
Odair J. Kuhn ◽  
Renata F. Barabasz ◽  
Roosevelt M. F. Silva ◽  
Monica C. Sustakowski ◽  
...  
Keyword(s):  
Biological Control ◽  
Low Temperature ◽  
Bacterial Blight ◽  
Rhodotorula Glutinis ◽  
Crop Productivity ◽  
Common Bacterial Blight ◽  
Disease Progress Curve ◽  
Progress Curve ◽  
The Common ◽  
Sporidiobolus Johnsonii

Bean common bacterial blight reduces crop productivity and is difficult to control. However, biological control by yeast can be an efficient complementary measure in management. The objective was to evaluate the ability of Rhodotorula glutinis and Sporidiobolus johnsonii to reduce the severity of bean common bacterial blight. The cultivar used was IAPAR Tuiuiú. The first experiment was sown in March and repeated in October, in a 4 × 3 factorial scheme (zero, one, two and three applications and three treatments R. glutinis, S. johnsonii and Acibenzolar-S-Methyl (ASM)). For this purpose were evaluated the area under the disease progress curve (AACPD), number of pods per plant (NVP), number of grains per pod (NGV), thousand grain mass (MMG) and productivity. For the results of the March cultivation, due to the low temperature, the maximum severity of bean common bacterial blight was 8% and the applications of yeasts were not significant for AACPD. The isolate R. glutinis showed the highest average of productivity with two applications, being 1006.44 kg ha-1. For October cultivation, R. glutinis and S. johnsonii isolates reduced AACPD by 66.84 and 58.42%, respectively with three applications. For productivity, R. glutinis and S. johnsonii showed no difference between the number of applications. The ASM showed a productivity of 4418.56 kg ha-1 with three applications. The results indicate that the yeasts R. glutinis and S. johnsonii reduce the severity of bean common bacterial blight and the most appropriate number of applications are two for both isolates.

scholarly journals Field Reaction of Landrace Components of Red Mottled Beans to Common Bacterial Blight

HortScience ◽  
1992 ◽  
Vol 27 (1) ◽  
pp. 50-51 ◽  
Author(s):  
James S. Beaver ◽  
James R. Steadman ◽  
Dermot P. Coyne
Keyword(s):  
Puerto Rico ◽  
Phaseolus Vulgaris ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Field Experiments ◽  
Common Bacterial Blight ◽  
Sources Of Resistance ◽  
Growing Seasons ◽  
Field Reaction ◽  
The Mean

Field reaction of 25 red mottled bean (Phaseolus vulgaris L.) genotypes to common bacterial blight [Xanthomonas campestris pv. phaseoli (Smith) Dye] was evaluated in Puerto Rico over 2 years. The average disease severity (percent leaf area with symptoms) was similar over years. The determinate red mottled genotypes had almost twice as much disease as indeterminate genotypes. Eight of the indeterminate genotypes had significantly less disease than the mean of the field experiments. These genotypes may serve as useful sources of resistance to common bacterial blight. The size of the chlorotic zone around necrotic lesions varied between growing seasons, showing that environment can influence the expression of common bacterial blight symptoms.

scholarly journals Detection and quantification of Xanthomonas axonopodis pv. phaseoli and its variant fuscans in common bean seeds

2013 ◽  
Vol 35 (4) ◽  
pp. 428-434 ◽  
Author(s):  
Norimar D'Ávila Denardin ◽  
Vanessa Andréia Agostini
Keyword(s):  
Bacterial Blight ◽  
Seed Quality ◽  
Culture Media ◽  
Common Bacterial Blight ◽  
Common Beans ◽  
Xanthomonas Axonopodis ◽  
Overnight Incubation ◽  
Efficient Detection ◽  
The Common

The common bacterial blight of common beans (CBCF), a disease caused by Xanthomonas axonopodis pv. phaseoli (Xap) and Xanthomonas axonopodis pv. phaseoli var. fuscans (Xapf), significantly reduces grain yield and seed quality. Because this bacterium is mainly disseminated through infected seeds, efficient detection of Xap and Xapf is important to assure the productivity and quality of the crop. In this study, various techniques that included different extraction techniques (two different incubation times, with and without centrifugation) and five culture media (Kado 523, GYCA, MXP, NSA, and PTSA) were tested for the detection of the seed-borne inoculum, using three different seed samples. Overnight incubation of the seeds, followed by centrifugation and incubation in Kado 523 resulted in higher extraction of Xap and Xapf. The best extraction technique was overnight incubation followed by centrifugation, and the best medium was PTSA. Among the tested culture media, PTSA provided better identification and counting of the bacterial colonies, thus allowing the quantification of the seed infection levels.

scholarly journals Foliar spraying with bacterial biocontrol agents for the control of common bacterial blight of bean

2018 ◽  
Vol 53 (10) ◽  
pp. 1101-1108 ◽  
Author(s):  
Maurício Sangiogo ◽  
Daniela Pimentel Rodriguez ◽  
Renata Moccellin ◽  
Johan Manuel Murcia Bermudez ◽  
Bianca Obes Corrêa ◽  
...  
Keyword(s):  
Bacterial Blight ◽  
Disease Incidence ◽  
Biocontrol Agents ◽  
Systemic Resistance ◽  
Common Bacterial Blight ◽  
Water Control ◽  
Progress Curve ◽  
Bean Plants ◽  
Before And After ◽  
Bean Leaves

Abstract: The objective of this work was to evaluate the effect of foliar spraying with bacterial biocontrol agents (BBAs) on the control of common bacterial blight (CBB) of bean, and on the induction of systemic resistance in bean plants. CBB control by BBAs was evaluated by spraying bean leaves 48 and 24 hours before and after pathogen inoculation (BPI and API, respectively), with: DFs93, Bacillus cereus; DFs513, Pseudomonas veronii; DFs769, B. cereus; the C01 combination, DFs93 + DFs769 + DFs831 (Pseudomonas fluorescens); the C03 combination, DFs348 (Bacillus sp.) + DFs769 + DFs831; and water (control). Systemic effects were analyzed after spraying DFs513, DFs769, C03, and water 72 and 48 hours BPI. Phaseolin production induced by DFs348, DFs513, DFs769, DFs831, and water was also assessed. DFs513, DFs769, and C03 significantly reduced disease incidence (area under disease progress curve), regardless of spraying time and disease severity when sprayed 72 and 48 hours BPI. The DFs769 and DFs831 isolates induced the accumulation of phytoalexin (phaseolin). Therefore, DFs513, DFs769, and C03 show potential for the biocontrol of CBB when applied preventively on bean leaves, besides inducing systemic resistance.

scholarly journals Sources of Resistance to Common Bacterial Blight and Rust in Elite Phaseolus vulgaris L. Germplasm

HortScience ◽  
1993 ◽  
Vol 28 (6) ◽  
pp. 644-646 ◽  
Author(s):  
E. Arnaud-Santana ◽  
M.T. Mmbaga ◽  
D.P. Coyne ◽  
J.R. Steadman
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Uromyces Appendiculatus ◽  
Common Bacterial Blight ◽  
Phaseolus Vulgaris L ◽  
Sources Of Resistance ◽  
The Common

We studied leaf and pod reactions of 18 Phaseolus vulgaris germplasm lines (three temperate and 15 tropical) to four Xanthomonas campestris pv. phaseoli (XCP) (Smith) Dye strains and seven Uromyces appendiculatus (UA) (Pers.) Unger races. Line × XCP interaction was significant for leaf and pod reactions. The common bean lines XAN-159, BAC-6, and XAN-112 had the best combined leaf and pod resistance to XCP. Line × UA race interactions were significant (P = 0.05). Lines IAPAR-14 and BAC-6 had the best combined resistance to XCP and UA.

scholarly journals Use of Marker-assisted Selection to Breed for Resistance to Common Bacterial Blight in Common Bean

2007 ◽  
Vol 132 (3) ◽  
pp. 381-386 ◽  
Author(s):  
Patrick D. O'Boyle ◽  
James D. Kelly ◽  
William W. Kirk
Keyword(s):  
Common Bean ◽  
Marker Assisted Selection ◽  
Bacterial Blight ◽  
Field Experiments ◽  
Selection Process ◽  
Bacterial Pathogen ◽  
Common Bacterial Blight ◽  
Epistatic Interactions ◽  
Sequence Characterized Amplified Region ◽  
Selection Of

Common bacterial blight (CBB), incited by the bacterial pathogen Xanthomonas axonopodis pv. phaseoli (Smith) Vauterin et al., is one of the most serious seed-borne diseases of common bean (Phaseolus vulgaris L.) worldwide. Although previous attempts to breed CBB-resistant bean cultivars have had limited success due to the quantitative nature of resistance, progress in marker-assisted selection has created new opportunities for breeders to improve the selection process. The potential of independent linked markers for indirect selection of CBB resistance was evaluated in field experiments in East Lansing and Saginaw, Mich. The presence of the SU91 marker was correlated with lower CBB leaf scores in East Lansing (r = −0.50***) and Saginaw (r = −0.59***) and correlated with pod resistance in Saginaw (r = −0.48***). SU91 exhibited a slight negative correlation with yield (r = −0.20*) in East Lansing but showed no association with yield in Saginaw. Plant selections carrying SU91 were crossed with a different source of CBB resistance linked to the sequence-characterized amplified region marker BC420 on bean linkage group B6. The effects of SU91 and BC420 markers were examined in two greenhouse studies. The presence of SU91 was correlated with lower CBB disease ratings for leaves (r = −0.20*) and pods (r = −0.27***). Presence of BC420 was only correlated with low pod ratings (r = −0.19*) in one experiment and CBB leaf resistance (r = −0.18*) in the second experiment. Presence of both markers resulted in lower levels of CBB resistance than provided by either marker alone, possibly indicating epistatic interactions between the independent loci conditioning CBB resistance in common bean.

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