Rhamnolipid produced by Pseudomonas aeruginosa SS14 causes complete suppression of wilt by Fusarium oxysporum f. sp. pisi in Pisum sativum

BioControl ◽  
2014 ◽  
Vol 60 (3) ◽  
pp. 375-385 ◽  
Author(s):  
Siddhartha Narayan Borah ◽  
Debahuti Goswami ◽  
Jiumoni Lahkar ◽  
Hridip Kumar Sarma ◽  
Mojibur Rahman Khan ◽  
...  
2016 ◽  
Vol 21 (1) ◽  
pp. 28-43
Author(s):  
Oscar Checa ◽  
Francisco Alpala

Uno de los problemas fitosanitarios limitantes del cultivo de arveja en Nariño, es el marchitamiento vascular causado por Fusarium oxysporum f. sp. pisi, que produce pérdidas entre el 30 y el 100% de la producción. El objetivo de esta investigación fue evaluar en condiciones de invernadero, la reacción de 18 genotipos de arveja volubles a tres aislamientos del hongo Fusarium oxysporum f. sp. pisi, procedentes de los municipios de Gualmatán, Ipiales y Pupiales ubicados en el departamento de Nariño. En lotes afectados, se realizó la colecta de muestras del tejido enfermo, a partir de plantas con síntomas de amarillamiento y presencia del hongo en la raíz, luego en laboratorio se obtuvieron cultivos monospóricos. La inoculación de los 18 genotipos de arveja se hizo con una concentración de 106 conidias por mililitro. La evaluación se realizó utilizando un diseño irrestrictamente al azar con arreglo factorial combinatorio para dos factores. El factor A correspondió a los genotipos de arveja y el factor B a las tres procedencias del inóculo. Los aislamientos de F. oxysporum no afectaron la altura de las plantas hasta los 30 días después de la inoculación. Se destacaron las líneas UN7231-1, UN7143-3 y UN7328 por presentar reacción moderadamente resistente a Fusarium oxysporum f. sp. pisi para al menos dos de los tres aislamientos del patógeno. Se observó variabilidad genética en la reacción a Fusarium oxysporum f. sp. pisi dentro de las líneas evaluadas que ofrece la posibilidad de hacer selecciones individuales para generar líneas con resistencia más uniforme. Palabras clave: genotipo, resistencia, inóculo, incidencia, escala, variabilidad, leguminosa, patógenos fungosos.


1966 ◽  
Vol 12 (2) ◽  
pp. 371-375 ◽  
Author(s):  
Richard S. Berk

The nutritional requirements for the growth of strains of Pseudomonas aeruginosa that produced autoplaques (AP+ strains) with and without the spontaneous production of turbid autoplaques was investigated. Self-lysis was most evident when the organisms were cultivated on complex growth media such as try p tone or brain–heart infusion agar. Partial to complete suppression of self-lysis was most evident when the cultures were grown on blood agar, chocolate agar, Seller"s differential medium, MacConkey, and other dye-containing media. In addition, lysis on a basal medium such as tryptone was suppressed by single supplements of nitrate, nitrite, normal serum, or basic fuchsin. The lytic response of cells grown on tryptone agar was duplicated when L-arginine, L-glutamate, L-glutamine, L-proline, or L-asparagine were singly supplemented to a vitamin-free salts basal medium devoid of a carbon and nitrogen source.


2011 ◽  
Vol 10 (65) ◽  
pp. 14348-14354 ◽  
Author(s):  
Li Bin ◽  
Yu Rongrong ◽  
Tang Qiaomei ◽  
Chen Xiaoling ◽  
Wu Zhiyi ◽  
...  

Author(s):  
Germán Andrés Guerra ◽  
◽  
Carlos Arturo Betancourth ◽  
Claudia Elizabeth Salazar ◽  
◽  
...  

2019 ◽  
Vol 31 (1) ◽  
pp. 89-96
Author(s):  
Syed K. Husnain ◽  
Sabir H. Hussain ◽  
Muhammad Atiq ◽  
Nasir A. Rajput ◽  
Waseem Abbas ◽  
...  

Twenty Peas (Pisum sativum L.) varieties/ lines were evaluated against Fusarium wilt caused by Fusarium oxysporum .Sp.pici by sowing them in sick plot during the year of 2016-17 at the Plant Pathology Research Institute, Faisalabad. Each cultivar/line was planted in a single row of three meter length, with plant to plant and row to row distances of 15cm and 30 cm respectively and replicated thrice by following Randomized Complete Block Design (RCBD). Out of these twenty varieties/ lines 13 including check variety Olympia were found highly susceptible ranging from 53.2 to 83.5% plant mortality. Six varieties/lines were susceptible ranging from 30.3 to 44.1 % plant mortality. Only a single variety Garrow performed as moderately resistant by showing 21% plant mortality in the field. Efficacy of five fungicides against Fusarium oxysporum .Sp.pici, at various concentrations was evaluated in-vitro and significant variations among treatments was observed. In general there was a significant decrease in mycelial growth of the fungus with an increase in concentration of fungicides. Tilt (Propiconazol),( Daconil (Chlorothalonil) and Crest (Carbendazim) were the most effective fungicides in inhibiting the growth of the fungus in descending order. The Tilt almost 90% inhibited the growth @ 50µg/ml concentration, Daconil and Crest exhibited intermediate effectiveness. Topsin-M (Thiophanate-methyl) and Score (Difenoconazole) were the least effective fungicides.Ahmad, M. A., S. M. Iqbal, N. Ayub, Y. Ahmad and A. Akram. 2010. Identification of resistant sources in chickpea against Fusarium wilt. Pak. J. Bot, 42: 417-426.Borum, D. E. and J. Sinclair. 1968. Evidence for systemic protection against Rhizoctonia solani with vitavax in cotton seedlings. Phytopathology, 58: 976-&.Davies, D., G. Berry, M. Heath and T. Dawkins. 1985. Pea (Pisum sativum L.). Grain Legume Crops. Collins, London, UK: 147-198.Food and Agriculture Organization of the United Nations. 2011Hagedorn, D. 1984. Compendium of pea diseases. 57 p. Am. Phytopathol. Soc., St. Paul, Minnesota, USA.Hannan, A., S. T. Sahi, I. Ahmed and A. A. Choudhry. 2014. Differential impact of Fusarium oxysporum f. sp. pisi on resistance source of pea genotypes and its chemical management. Pakistan Journal of Phytopathology, 26: 91-96.Haware, M. P. 1978. Eradication of Fusarium oxysporum f. sp. ciceri Transmitted in Chickpea Seed. Phytopathology, 68: 1364.Haware, M.P. and Nene, Y.L., 1982. Races of Fusarium oxysporum f.sp. ciceri. Plant disease, 66 (9), pp.809-810.Hulse, J. H. 1994. Nature, composition, and utilization of food legumes. Expanding the Production and Use of Cool Season Food Legumes. Springer Netherlands, pp. 77-97.Ilyas, M., M. Iqbal and K. Iftikhar. 1992. Evaluation of some fungicides against Fusarium oxysporum f. sp. ciceris and chickpea wilt. Pakistan Journal of  Phaytopahtology, 4: 5-8.Iqbal, S. M. 2005. Screening of chickpea genotypes for resistance against Fusarium wilt. Mycopath (Pakistan).Javaid, I. A., A. Ghafoorm and R. Anwar. 2002. Evaluation of local and exotic pea Pisum sativum germplasm for vegetable and dry grain straits. Pak. J. Bot, 34: 419-427.Khan, I., S. Alam and A. Jabbar. 2002. Selection for resistance to Fusarium wilt and its relationship with phenols in chickpea.Khan, S. A., A. Awais, N. Javed, K. Javaid, A. Moosa, I. U. Haq, N. A. Khan, M. U. Chattha and A. Safdar. 2016. Screening of pea germplasm against Fusarium oxysporum f. sp. pisi and invitro management through chemicals. Pakistan Journal of Phytopathology, 28: 127-131.Khokhar, M. 2014. Production status of major vegetables in Pakistan, their problems and suggestions. Agric. Corner, 9.Kraft, J. M. 1994. Fusarium wilt of peas (a review). Agronomie, 14: 561-567.Maitlo, S., R. Syed, M. Rustamani, R. Khuhro and A. Lodhi. 2014. Comparative efficacy of different fungicides against fusarium wilt of chickpea (Cicer arietinum L.). Pakistan Journal of Botany, 46: 2305-2312.McPhee, K. 2003. Dry pea production and breeding. Food, Agri Environ, 1: 64-69.Nawab, N. N., G. M. Subhani, K. Mahmood, Q. Shakil and A. Saeed. 2008. Genetic variability, correlation and path analysis studies in garden pea (Pisum sativum L.). J. Agric. Res, 46: 333-340.Nene, Y., M. Haware and M. Reddy. 1981. Chickpea diseases: resistance-screening techniques.Pande, S., J. N. Rao and M. Sharma. 2007. Establishment of the Chickpea Wilt Pathogen Fusarium oxysporum f. sp. ciceris in the Soil through Seed Transmission. The Plant Pathology Journal, 23: 3-6.Persson, L., L. Bødker and M. Larsson-Wikström. 1997. Prevalence and pathogenicity of foot and root rot pathogens of pea in Southern Scandinavia. Plant Disease, 81: 171-174.Steel, R. G. D. and J. H. Torrie. 1980. Principles and procedures of statistics, a biometrical approach. McGraw-Hill Kogakusha, Ltd.Sundar, A. R., N. Das and D. Krishnaveni. 1995. In-vitro antagonism of Trichoderma spp. against two fungal pathogens of Castor. Indian Journal of Plant Protection, 23: 152-155.Vyas, S. C. 1984. Systemic fungicides. Systemic fungicides.  


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