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 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 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 A Radiation-induced Mutant with Resistance to Common Bacterial Blight Disease in Common Beans

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 577-578 ◽  
Author(s):  
Mohamed F. Mohamed ◽  
Dermot P. Coyne ◽  
Paul E. Read
Keyword(s):  
Phaseolus Vulgaris ◽  
Dominican Republic ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Common Bacterial Blight ◽  
Common Beans ◽  
Radiation Induced ◽  
Bacterial Blight Disease ◽  
Blight Disease ◽  
Induced Mutant

The leaf reaction of the Phaseolus vulgaris L. germplasm—UNECA (M6 mutant derived from the cultivar Chimbolito, Costa Rica), `Chimbolito', BAC-6 (Brazil), XAN-159 (Centro Internacional de Agricultura Tropical, Cali, Colombia), and `PC-50' (Domican Republic)—to Xanthomonas campestris pv. phaseoli strain V4S1 (Dominican Republic) were determined in two replicated trials conducted in a greenhouse in Lincoln, Neb. (Feb.–Mar. and July–Aug. 1993). `PC-50' and `Chimbolito' were susceptible to Xcp strain V4S1 in both tests. UNECA, BAC-6, and XAN-159 had similar levels of resistance to Xcp in the July to August trial. However, in the February to March trial, the resistance of UNECA was greater than that of BAC-6 but less than that of XAN-159.

scholarly journals Induction of defense mechanisms from filtrates of saprophytic fungi against early blight disease in tomato

2016 ◽  
Vol 10 (44) ◽  
pp. 1849-1859 ◽  
Author(s):  
Jussiê da Silva Solino Antônio ◽  
Regina Freitas Schwan-Estrada Kátia ◽  
Santos Batista Oliveira Juliana ◽  
dos Santos Rodrigues Alencar Marianna ◽  
Martins Ribeiro Lilianne
Keyword(s):  
Defense Mechanisms ◽  
Early Blight ◽  
Saprophytic Fungi ◽  
Blight Disease

Silencing of an aquaporin gene diminishes bacterial blight disease in rice

2018 ◽  
Vol 48 (2) ◽  
pp. 143-158 ◽  
Author(s):  
Liyuan Zhang ◽  
Yiqun Hu ◽  
Ping Li ◽  
Xiaobing Wang ◽  
Hansong Dong
Keyword(s):  
Bacterial Blight ◽  
Aquaporin Gene ◽  
Bacterial Blight Disease ◽  
Blight Disease

scholarly journals Comparative Genomics Within the Bacillus Genus Reveal the Singularities of Two Robust Bacillus amyloliquefaciens Biocontrol Strains

2015 ◽  
Vol 28 (10) ◽  
pp. 1102-1116 ◽  
Author(s):  
M. C. Magno-Pérez-Bryan ◽  
P. M. Martínez-García ◽  
J. Hierrezuelo ◽  
P. Rodríguez-Palenzuela ◽  
E. Arrebola ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Biofilm Formation ◽  
Bacillus Amyloliquefaciens ◽  
Communication Systems ◽  
Defense Mechanisms ◽  
Ad Hoc ◽  
Cell Communication ◽  
Defense Responses ◽  
Microbial Pathogens ◽  
Stimulate Plant Growth

Bacillus amyloliquefaciens CECT 8237 and CECT 8238, formerly known as Bacillus subtilis UMAF6639 and UMAF6614, respectively, contribute to plant health by facing microbial pathogens or inducing the plant’s defense mechanisms. We sequenced their genomes and developed a set of ad hoc scripts that allowed us to search for the features implicated in their beneficial interaction with plants. We define a core set of genes that should ideally be found in any beneficial Bacillus strain, including the production of secondary metabolites, volatile compounds, metabolic plasticity, cell-to-cell communication systems, and biofilm formation. We experimentally prove that some of these genetic elements are active, such as i) the production of known secondary metabolites or ii) acetoin and 2-3-butanediol, compounds that stimulate plant growth and host defense responses. A comparison with other Bacillus genomes permits us to find differences in the cell-to-cell communication system and biofilm formation and to hypothesize variations in their persistence and resistance ability in diverse environmental conditions. In addition, the major protection provided by CECT 8237 and CECT 8238, which is different from other Bacillus strains against bacterial and fungal melon diseases, permits us to propose a correlation with their singular genetic background and determine the need to search for additional blind biocontrol-related features.

Plant growth regulators and signal molecules enhance resistance against bacterial blight disease of pomegranate

2017 ◽  
Vol 165 (11-12) ◽  
pp. 727-736 ◽  
Author(s):  
Konduvally Annegowda Lalithya ◽  
Girigowda Manjunatha ◽  
Besagarahally Raju ◽  
Mukund S. Kulkarni ◽  
Veeresh Lokesh
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Bacterial Blight ◽  
Signal Molecules ◽  
Bacterial Blight Disease ◽  
Blight Disease
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