geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Enhanced biological control of phytophthora blight of pepper by biosurfactant-producing pseudomonas


, : Enhanced biological control of phytophthora blight of pepper by biosurfactant-producing pseudomonas. Plant Pathology Journal 29(4): 418-426

Pseudomonas isolates from different crop plants were screened for in vitro growth inhibition of Phytophthora capsici and production of biosurfactant. Two in vivo experiments were performed to determine the efficacy of selected Pseudomonas strains against Phytophthora blight of pepper by comparing two fungicide treatments [acibenzolar-S-methyl (ASM) and ASM + mefenoxam]. Bacterial isolates were applied by soil drenching (1 × 10(9) cells/ml), ASM (0.1 μg a.i./ml) and ASM + mefenoxam (0.2 mg product/ml) were applied by foliar spraying, and P. capsici inoculum was incorporated into the pot soil three days after treatments. In the first experiment, four Pseudomonas strains resulted in significant reduction from 48.4 to 61.3% in Phytophthora blight severity. In the second experiment, bacterial treatments combining with olive oil (5 mL per plant) significantly enhanced biological control activity, resulting in a reduction of disease level ranging from 56.8 to 81.1%. ASM + mefenoxam was the most effective treatment while ASM alone was less effective in both bioassays. These results indicate that our Pseudomonas fluorescens strains (6L10, 6ba6 and 3ss9) that have biosurfactant-producing abilities are effective against P. capsici on pepper, and enhanced disease suppression could be achieved when they were used in combination with olive oil.

US$19.90

PMID: 25288970

DOI: 10.5423/PPJ.OA.11.2012.0176


Other references

Malviya, S.; Tait, A.R.; Voepel-Lewis, T.; Maxwell, L.G., 2001: Oranges and Apples: Sedation and Analgesia. Pediatrics 108(3): 824-824

Kraus, F.; Brown, W.M., 1998: Phylogenetic relationships of colubroid snakes based on mitochondrial DNA sequences. We used a 694 bp length of the mitochondrial ND4 gene from 40 genera to infer phylogenetic relationships among colubroid snakes. The goals of this study were to identify conserved subsets of ND4 sequence data that could be used to address (1) whic...

Denuault, G.; Milhano, Célia.; Pletcher, D., 2005: Mesoporous palladium-the surface electrochemistry of palladium in aqueous sodium hydroxide and the cathodic reduction of nitrite. The voltammetry of nanostructured palladium layers electrodeposited from a hexagonal liquid crystal phase onto platinum microdiscs show well defined peaks for the adsorption/desorption of hydrogen and surface oxidation/reduction in 2 M NaOH. These...

Rezai, T.; Bock, J.E.; Zhou, M.V.; Kalyanaraman, C.; Lokey, R.Scott.; Jacobson, M.P., 2006: Conformational flexibility, internal hydrogen bonding, and passive membrane permeability: successful in silico prediction of the relative permeabilities of cyclic peptides. We report an atomistic physical model for the passive membrane permeability of cyclic peptides. The computational modeling was performed in advance of the experiments and did not involve the use of "training data". The model explicitly t...

Velluz, A.; Bronner, H.; Naf, R.; Wuest, H.; Buchi, G.; Pickenhagen, W., 1994: Some 5,6-dihydro-4H-1,3,5-dithiazines in peanut butter. In an extract of peanut butter, prepared by a Likens-Nickerson extraction, 16 alkyl-substituted 5,6-dihydro-4H-1,3,5-dithiazines were identified. Their structures were confirmed by specific synthesis.

Kim, B.Hoon.; Byeon, K-Jae.; Kim, J.Young.; Kim, J.; Jin, H.Min.; Cho, J-Yeon.; Jeong, S-Jun.; Shin, J.; Lee, H.; Kim, S.Ouk., 2014: Negative-tone block copolymer lithography by in situ surface chemical modification. Negative-tone block copolymer (BCP) lithography based on in situ surface chemical modification is introduced as a highly efficient, versatile self-assembled nanopatterning. BCP blends films consisting of end-functionalized low molecular weight pol...

Stone L.A., 1968: Judged constitutionality of functional psychosis disorder classifications human. Scandinavian Journal of Psychology 9(4): 252-256

Behere, R.V., 2009: Conference proceedings: Biological psychiatry symposium on "Endophenotypes in Psychiatry". Asian Journal of Psychiatry 2(2): 80-81

J.Y.L.e; B.J.K.m; S.P.L.e; M.S.P.rk; M.J.O.; J.W.P.eng; B.J.L.e; D.C.C.oi, 2008: Toxocariasis is an important cause of atopic myelitis. Journal of Allergy and Clinical Immunology 121(2-supp-S1)

Gandar, M.V., 1983: Wood as a source of energy. At present about 4% of South Africa's primary energy is wood, most of which is non-commercial firewood. Serious shortages of firewood occur in many areas. The development of woodlots for fuel is discussed, with emphasis on social factors. In...