scholarly journals Application of Rhizobacteria for Induction of Systemic Resistance to Bacterial Blight of Cotton Caused by Xanthomonas Campestris PV. Malvacearum Using Fluorescent Pseudomonads of Rhizosphere

2009 ◽  
Vol 49 (4) ◽  
Author(s):  
Vahid Fallahzadeh ◽  
Masoud Ahmadzadeh ◽  
Alireza Marefat ◽  
Keivan Ghazanfary
Keyword(s):  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Fluorescent Pseudomonads ◽  
Systemic Resistance

scholarly journals Antagonistic potential of some bacterial strains against Xanthomonas campestris, the cause of bacterial blight in Hordeum vulgare

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 4205-4216
Author(s):  
Deiaa A. El-Wakil ◽  
Ashraf M. M. Essa
Keyword(s):  
Hordeum Vulgare ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Bioactive Molecules ◽  
Systemic Resistance ◽  
Infested Soil ◽  
Bacterial Strains ◽  
Hordeum Vulgare L ◽  
Wide Range ◽  
Antagonistic Potential

Bacterial blight disease due to Xanthomonas campestris pv. translucens results in yield losses in barley, Hordeum vulgare L., especially in warm climates. Bio-based bactericides represent a safe alternative to harmful chemicals for controlling a wide range of phytopathogens. The bacterial strains (Brevibacterium linens, Bacillus subtilis, B. thuringiensis) were tested as antagonistic potential against X. campestris disease in barley seedlings. Antagonists were applied as seed biopriming and soil drench in X. campestris infested soil. Soil-drenching treatment was more efficient than the biopriming application. A significant increase in shoot length with a clear decrease in seed germination was recorded. Fresh and dry weights of shoot and root lengths of the treated plants were markedly improved. The remarkable antagonistic activity of B. linens, B. subtilis, and B. thuringiensis against X. campestris could be attributed to the capability to produce bioactive molecules that can trigger systemic resistance in the infected seedlings.

scholarly journals Induction of Systemic Resistance by Biocontrol Agents against Bacterial Blight of Cotton Caused by Xanthomonas campestris pv. malvacearum

2013 ◽  
Vol 2 (1) ◽  
pp. 59-69
Author(s):  
Vinay B. Raghavendra ◽  
Lokesh Siddalingaiah ◽  
Nagesh K. Sugunachar ◽  
Chandra Nayak ◽  
Niranjana S. Ramachandrappa
Keyword(s):  
Defense Mechanisms ◽  
Bacterial Blight ◽  
Seed Treatment ◽  
Xanthomonas Campestris ◽  
Growth Parameters ◽  
Direct Action ◽  
Systemic Resistance ◽  
Challenge Inoculation ◽  
Stimulate Plant Growth ◽  
Blight Disease

Bioagents such as Trichoderma harzianum, Pseudomonas fluorescens and Bacillus subtilis were isolated from cotton rhizosphere soil and tested individually for their effectiveness in controlling bacterial blight of cotton caused by Xanthomonas campestris pv. malvacearum (Xcm). Talc based formulations were prepared and used for seed treatment at different concentrations for assessing their ability to stimulate plant growth and to control bacterial blight disease. Among bioagents, P. fluorescens and T. harzianum proved to be effective in controlling disease under field conditions.  Other than direct action, these bioagents triggered the defense related enzymes involved in synthesis of phenols. Higher activity of peroxidase, phenylalanine ammonia-lyase, polyphenol oxidase and b-1,3-glucanase was observed in P. fluorescens and T. harzianum treated cotton plants after challenge inoculation with Xcm. Seed treatment with these bioagents enhanced the seed germination and growth parameters against blight disease and they also induced systemic resistance in plant for defense mechanisms. 

scholarly journals Coinoculation Effects of the Pathogens Causing Common Bacterial Blight, Rust, and Bean Common Mosaic in Phaseolus vulgaris

1990 ◽  
Vol 115 (2) ◽  
pp. 319-323 ◽  
Author(s):  
H.Z. Zaiter ◽  
D.P. Coyne ◽  
J.R. Steadman
Keyword(s):  
Phaseolus Vulgaris ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Bean Common Mosaic Virus ◽  
Host Susceptibility ◽  
Uromyces Appendiculatus ◽  
Common Bacterial Blight ◽  
Dry Bean ◽  
Screening For Resistance ◽  
Prior Infection

Ten dry bean (Phaseolus vulgaris L.) cultivars/lines with differential reactions to rust were used in growth chamber experiments to determine rust [Uromyces appendiculatus (Pers.) Unger var. appendiculutus, (U a)], and common bacterial blight Xanthomonas campestris pv. phaseoli (E.F. Sm.) Dews. (X c p)] reactions on leaves when coinoculated with both pathogens. The X c p-U a necrosis symptoms were very different from those caused by X c p alone. Depending on the level of host susceptibility to rust, the X c p reaction remained confined within the rust pustule or spread beyond the pustule area, causing a necrosis of the entire leaf. Prior infection of bean seedlings with bean common mosaic virus (BCMV), NY-15 strain, reduced rust pustule size, but did not affect the reaction to X c p. Screening with X c p and BCMV can be done at the same time during the early vegetative stage, but the interactions of U a with X c p and of BCMV with U a need to be considered in screening for resistance.

scholarly journals Differential Pathogenicity of Xanthomonas campestris pv. phaseoli and X. fuscans subsp. fuscans Strains on Bean Genotypes with Common Blight Resistance

Plant Disease ◽  
2008 ◽  
Vol 92 (4) ◽  
pp. 546-554 ◽  
Author(s):  
N. Mutlu ◽  
A. K. Vidaver ◽  
D. P. Coyne ◽  
J. R. Steadman ◽  
P. A. Lambrecht ◽  
...  
Keyword(s):  
Common Bean ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
South American ◽  
Bacterial Strains ◽  
Genetic Changes ◽  
Germplasm Screening ◽  
Lack Of Information ◽  
Pathogenic Variation ◽  
The Common

Both the common bacterial blight (CBB) pathogen (Xanthomonas campestris pv. phaseoli) and X. fuscans subsp. fuscans, agent of fuscous blight, cause indistinguishable symptoms in common bean, Phaseolus vulgaris. Yield losses can exceed 40%. Lack of information about the specificity between X. campestris pv. phaseoli strains and major quantitative trait loci (QTL) or alleles conferring resistance makes the task of identifying genetic changes in host–pathogen interactions and the grouping of bacterial strains difficult. This, in turn, affects the choice of pathogen isolates used for germplasm screening and complicates breeding for CBB resistance. Common bean host genotypes carrying various sources and levels of resistance to CBB were screened with 69 X. campestris pv. phaseoli and 15 X. fuscans subsp. fuscans strains from around the world. Differential pathogenicity of the CBB pathogen was identified on the 12 selected bean genotypes. The X. fuscans subsp. fuscans strains showed greater pathogenicity than X. campestris pv. phaseoli strains having the same origin. African strains were most pathogenic. The largest variation in pathogenicity came from X. campestris pv. phaseoli strains that originated in Caribbean and South American countries. Pathogenic variation was greater within X. campestris pv. phaseoli than within X. fuscans subsp. fuscans strains. Implications for breeding for CBB resistance are discussed.

scholarly journals Relationship of Bacterial Leaf Blight Disease of Cotton with Different Weather Parameters Under South Gujarat Condition of India

2018 ◽  
Vol 51 (1) ◽  
pp. 45-50
Author(s):  
P.B. Sandipan ◽  
R.K. Patel ◽  
G.O. Faldu ◽  
D.M. Patel ◽  
B.G. Solanki
Keyword(s):  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Abiotic Factors ◽  
Environmental Parameters ◽  
Common Disease ◽  
Bacterial Disease ◽  
Cotton Production ◽  
Boll Rot ◽  
Bacterial Blight Disease ◽  
Blight Disease

Abstract Cotton is a soft, fluffy staple fiber that grows in a boll, around the seeds of the cotton plants of the genus Gossypium in the family Malvaceae. Bacterial blight of cotton, also know as angular leaf spot, boll rot, and black leg, is a potentially destructive bacterial disease of cotton production. The disease caused by Xanthomonas campestris pv. malvacearum (Smith) Dye (synonyms Xanthomonas malvacearum (E.F. Sm) Dowson) is one of the most important and serious disease in cotton crop. Main objective of present research is to study the progress of the bacterial blight disease of cotton (BLB), caused by Xanthomonas campestris pv. malvacearum (Smith) Dye, with relation to the environmental parameters. This is a common disease affecting the growth, development and yield of cotton. A field trial was conducted to determine the influence of environmental factors, viz. rainfall periods, temperature, sun shine hours and humidity on the development of disease. Bacterial blight disease was recorded with its appearance and subsequently at weekly interval till it prevailed on G. Cot. Hy.12 (Non Bt). The incidence of bacterial blight disease (BLB) was noticed during 28 to 49th standard week with the maximum disease intensity in third week of September (23.5% PDI). None of the abiotic factors had significant influence on bacterial blight disease progress and development.

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.

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