scholarly journals On the varietal difference to the resistance of paddy rice to the bacterial leaf-blight.

1953 ◽  
Vol 3 (2) ◽  
pp. 29-32
Author(s):  
Genkichi KONDO ◽  
Masaichi FUKUNAGA
Keyword(s):  
Paddy Rice ◽  
Leaf Blight ◽  
Varietal Difference ◽  
Bacterial Leaf Blight

Evaluation of Improvement Effect of Restorer Lines on Pyramiding Genes Re-sistant to Rice Blast, Bacterial Leaf Blight and Brown Planthopper

2016 ◽  
Vol 42 (1) ◽  
pp. 31 ◽  
Author(s):  
Jue LOU ◽  
Wen-Qing YANG ◽  
Zhong-Xing LI ◽  
Tian-Kuan LUO ◽  
Yong-Chu XIE ◽  
...  
Keyword(s):  
Rice Blast ◽  
Brown Planthopper ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Improvement Effect

scholarly journals Ginger Essential Oils-Loaded Nanoemulsions: Potential Strategy to Manage Bacterial Leaf Blight Disease and Enhanced Rice Yield

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3902
Author(s):  
Abdullahi Adamu ◽  
Khairulmazmi Ahmad ◽  
Yasmeen Siddiqui ◽  
Intan Safinar Ismail ◽  
Norhayu Asib ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Electron Microscope ◽  
Essential Oils ◽  
Disease Severity ◽  
Rice Yield ◽  
Cell Structure ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Control Treatment ◽  
Promising Alternative

The bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most serious rice diseases, causing huge yield losses worldwide. Several technologies and approaches have been opted to reduce the damage; however, these have had limited success. Recently, scientists have been focusing their efforts on developing efficient and environmentally friendly nanobactericides for controlling bacterial diseases in rice fields. In the present study, a scanning electron microscope (SEM), transmission electron microscope (TEM), and a confocal laser scanning microscope (CLSM) were utilized to investigate the mode of actions of ginger EOs on the cell structure of Xoo. The ginger EOs caused the cells to grow abnormally, resulting in an irregular form with hollow layers, whereas the dimethylsulfoxide (DMSO) treatment showed a typical rod shape for the Xoo cell. Ginger EOs restricted the growth and production of biofilms by reducing the number of biofilms generated as indicated by CLSM. Due to the instability, poor solubility, and durability of ginger EOs, a nanoemulsions approach was used, and a glasshouse trial was performed to assess their efficacy on BLB disease control. The in vitro antibacterial activity of the developed nanobactericides was promising at different concentration (50–125 µL/mL) tested. The efficacy was concentration-dependent. There was significant antibacterial activity recorded at higher concentrations. A glasshouse trial revealed that developed nanobactericides managed to suppress BLB disease severity effectively. Treatment at a concentration of 125 μL/mL was the best based on the suppression of disease severity index, AUDPC value, disease reduction (DR), and protection index (PI). Furthermore, findings on plant growth, physiological features, and yield parameters were significantly enhanced compared to the positive control treatment. In conclusion, the results indicated that ginger essential oils loaded-nanoemulsions are a promising alternative to synthetic antibiotics in suppressing Xoo growth, regulating the BLB disease, and enhancing rice yield under a glasshouse trial.

Bacterial leaf blight of sweet pepper (Capsicum annuum) caused by Pseudomonas cichorii in Japan

2013 ◽  
Vol 80 (1) ◽  
pp. 103-107 ◽  
Author(s):  
Rie Gappa-Adachi ◽  
Yasuaki Morita ◽  
Yoshifumi Shimomoto ◽  
Shigeharu Takeuchi
Keyword(s):  
Capsicum Annuum ◽  
Sweet Pepper ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Pseudomonas Cichorii

scholarly journals Genome-wide association study and transcriptome analysis discover new genes for bacterial leaf blight resistance in rice (Oryza sativa L.)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xinyue Shu ◽  
Aijun Wang ◽  
Bo Jiang ◽  
Yuqi Jiang ◽  
Xing Xiang ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Association Study ◽  
Transcriptome Analysis ◽  
Genome Wide Association Study ◽  
Leaf Blight ◽  
Genome Wide Association ◽  
Bacterial Leaf Blight ◽  
Significant Differential Expression ◽  
Genome Wide ◽  
A Genome

Abstract Background Rice (Oryza sativa) bacterial leaf blight (BLB), caused by the hemibiotrophic Xanthomonas oryzae pv. oryzae (Xoo), is one of the most devastating diseases affecting the production of rice worldwide. The development and use of resistant rice varieties or genes is currently the most effective strategy to control BLB. Results Here, we used 259 rice accessions, which are genotyped with 2 888 332 high-confidence single nucleotide polymorphisms (SNPs). Combining resistance variation data of 259 rice lines for two Xoo races observed in 2 years, we conducted a genome-wide association study (GWAS) to identify quantitative trait loci (QTL) conferring plant resistance against BLB. The expression levels of genes, which contains in GWAS results were also identified between the resistant and susceptible rice lines by transcriptome analysis at four time points after pathogen inoculation. From that 109 candidate resistance genes showing significant differential expression between resistant and susceptible rice lines were uncovered. Furthermore, the haplotype block structure analysis predicted 58 candidate genes for BLB resistance based on Chr. 7_707158 with a minimum P-value (–log 10 P = 9.72). Among them, two NLR protein-encoding genes, LOC_Os07g02560 and LOC_Os07g02570, exhibited significantly high expression in the resistant line, but had low expression in the susceptible line of rice. Conclusions Together, our results reveal novel BLB resistance gene resources, and provide important genetic basis for BLB resistance breeding of rice crops.

scholarly journals Activity of extracellular compounds of Pseudomonas sp. against Xanthomonas axonopodis in vitro and bacterial leaf blight in eucalyptus

2012 ◽  
Vol 37 (4) ◽  
pp. 233-238 ◽  
Author(s):  
Lucilene P. Lopes ◽  
Admiltom G. Oliveira Jr ◽  
Jamile P.O. Beranger ◽  
Cíntia G. Góis ◽  
Fernanda C.S. Vasconcellos ◽  
...  
Keyword(s):  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Pseudomonas Sp ◽  
Xanthomonas Axonopodis
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