Identification of the causal agent of powdery mildew in pumpkin plants (Cucurbita pepo L.) in Tehuacán, México

Main Article Content

Jorge Francisco León De La Rocha
Cosme Bojórquez-Ramos
Nazario Francisco-Francisco
Arturo Olivar-Hernandez
Ricardo G. López-España
Yusimy Reyes-Duque
Pedro Pérez-Olvera

Abstract

Pumpkin cultivation (Cucurbita pepo L.) is relevant because it is one of the most important vegetables due to its consumption worldwide. However, a limitation for its production is the incidence of diseases, among which is the powdery mildew, causing losses of 50 % to 100 % in yield. Literature identifies two genera causing this disease worldwide: Golovinomyces cichoracearum (DC.) V.P. Heluta and Podosphaera xanthii (Castagne) U. Braun &Shishkoff. Both genera were identified in different crops in Sinaloa, Mexico, but the causal agent of powdery mildew in pumpkin in Tehuacán has not been identified. Therefore, the objective of this research was to corroborate the presence of this pathogen in Tehuacán. The morphological and molecular identification was carried out considering the anamorph and telomorph states. The morphological analysis was made by means of optical microscopy and the molecular analysis by means of PCR. The ITS region of the ribosomal DNA (ITS1 5.8 S and ITS2) was amplified and its sequence was compared with the records of the Genbank NCBI. Powdery mildew showed simple conidiophores, mainly ovoid conidia with fibrosin bodies inside. The sexual phase showed spherical casmotecia with septated mycelial appendages, with an ovoid asca with an eye opening of 18.5 µm in diameter and eight ascospores inside. These characteristics and the sequences obtained coincided with those described for Podosphaera xanthii, which allowed the identification of this pathogen as the causal agent of powdery mildew in pumpkin in Tehuacán, Puebla.

Article Details

How to Cite
León De La Rocha, J. F., Bojórquez-Ramos, C., Francisco-Francisco, N., Olivar-Hernandez, A., López-España, R. G., Reyes-Duque, Y., & Pérez-Olvera, P. (2020). Identification of the causal agent of powdery mildew in pumpkin plants (Cucurbita pepo L.) in Tehuacán, México. Revista De Protección Vegetal, 35(2). Retrieved from https://revistas.censa.edu.cu/index.php/RPV/article/view/1097
Section
ORIGINAL ARTICLES

References

SAGARPA. 2019. Secretaria de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación. [en línea] 2019 octubre 24 [Fecha de acceso 17 de diciembre de 2019]. URL disponible en: URL disponible en: http://www.sagarpa.gob.mx .

SAGARPA. 2018. Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación. [en línea] 2018 octubre 24 [Fecha de acceso 17 de diciembre de 2019]. URL disponible en: URL disponible en: http://www.sagarpa.gob.mx .

Cebreros SF, Sánchez CMA, Acosta MI. Supervivencia de Erysiphe cichoracearum de Candolle causante de la cenicilla de las cucurbitáceas en el Valle de Culiacán. Memorias del XVIII Congreso Nacional de la Sociedad Mexicana de Fitopatología. Puebla, Puebla, México. 1991. 120 p.

Leonard P, Gianessi NR. 2005. The value of fungicides in U.S. In: Crop production. CropLife Foundation. Washington, USA. [en línea] 2019 octubre 24 [Fecha de acceso 17 de diciembre de 2019]. URL disponible en: URL disponible en: https://croplifefoundation.files.wordpress .

Braun U, Shishkoff N, Takamatsu S. Phylogeny of Podosphaer sect. Sphaerotheca subsect Magnicellulatae (Sphaerotheca fuliginea auct. s.lat.) inferred from rDNA ITS sequences - a taxonomic interpretation. Schlechtendalia. 2001; 7: 45-52.

Braun U, Cook RTA, Inman AJ, Shin D. The taxonomy of the powdery mildew fungi. In Bélanger (eds) The powdery mildews a comprehensive treatise. APS Press, St. Paul, MN, USA. 2002; pp. 13-55.

Glawe DA. The powdery mildews: a review of the world´s most familiar (yet poorly known) plant pathogens. Annu. Rev. Phytopathology. 2008; 46: 27-51.

Cho SE, Zhao TT, Choi IYY, Choi J, Shin HD. Primer informe de moho polvoriento causado por Podosphaera xanthii sobre Ramie en Corea. The American Phytopathological Society. 2016; 100(7):1943-7692.

Bojórquez RC, León FJ, Allende MR, Muy RMD, Carrillo FJA, Valdez TJB, et al. Characterization of powdery mildew in cucumber plants under greenhouse conditions in the Culiacan Valley, Sinaloa, Mexico. African Journal of Agricultural Research. 2012; 7(21):3237-3248.

González MN, Martínez CB, Infante MD. Mildiu polvoriento en las cucurbitáceas. Rev. Protec. Veg. 2010; 25(1): 44-50.

McCreight JD. Melon-powdery mildew interactions reveal variation in melon cultigens and Podosphaera xanthii races 1 and 2. J Amer Soc Hort Sci. 2006;131: 59-65.

Gastélum RF, Apodaca SMA, Martínez VMC, Espinosa MS. Podosphaera Sect. Sphaerotheca) xanthii (Castagne). Brawn, U. y Shishkoff, N. en cucurbitáceas en el norte de Sinaloa, México. Rev. Mex. Fitopatología. 2005; 23:162-168.

Gastélum RF, Maldonado MIE, Beltrán PH, Apodaca SMA, Espinoza MS, Martínez VMC, Longoria ERM, Olivas PNG. Powdery mildews in agricultural crops of Sinaloa: Current status on their identification and future research lines. Rev. Mex. Fitopatología . 2017; 35:106-129.

Braun U, Cook RTA. Taxonomy manual of the Erysiphales (Powdery mildews).CBS. Biodiversity Series No.11. 2012, pp. 1-707.

Tovar PJM, Rosas SGH, García RMT, Camacho TM, Leyva MSG. Observaciones con MEB de cinco especies de Erysiphales en plantas ornamentales y frutales en el Estado de México. Rev. Scientiafungorum. 2018; 48: 33-4.

Martínez CJ, Romero D, de la Torre F, Fernández OD, Tores JA, de Vicente A, et al. The functional characterization of Podosphaera xanthii candidate effector genes reveals novel target functions for fungal pathogenicity. Rev. Molecular Plant-Microbe Interactions. 2018, 31(9): 914-931.

Chen RS, Chu C, Cheng CW, Chen WY, Tsay JG. Differentiation of two Powdery mildews of sunflower (Helianthus annuus) by PCR mediated method based on ITS sequences. Eur. J. Plant Pathol.2008; 121:1-8.

Velarde FS, Ortega MPF, Fierros LGA, Padilla VI, Gutiérrez PE, Rodríguez CFG, et al. Molecular and biological identification of physiological races 0 and 5 of Fusarium oxysporum Schlechtend.: Fr f.sp.ciceris (Padwick) Matuo & K. Sato of chickpea in northwest México. Revista Mexicana de Ciencias Agrícolas. 2015; 6(4):735-748.

Bojórquez RC, Maruthachalam K, McCreight DJ, Estrada JSR. Podosphaera xanthii but not Golovinomyces cichoracearum infects Cucurbits in a Greenhouse at Salinas, California. Cucurbit Genetics Cooperative Report. 2011; 33-34: 24-28.

Saenz GS, Taylor JW. Phylogeny of the erysiphales (powdery mildews) inferred from internal transcribed spacer ribosomal DNA sequences. Can. J. Bot. 1999; 77: 150-168.

Nayak AK, Babu BK. First report of powdery mildew on Lagenaria siceraria caused by Podosphaera xanthii in India. Journal of Plant Pathology. 2017; 99 (1): 287-304.

Cui H, Wu C, Zhu Q, Fan C, Gao P. First Report of Powdery Mildew Caused by Podosphaera xanthii on Lagenaria siceraria in China. Rev. Plant Disease. 2018; 102(11): 2374-2374.

Dorneles KR, Dallagnol LJ, Brunetto AE, Pazdiora PC. First report of powdery mildew caused by Podosphaera xanthii on Lagenaria siceraria in Brazil. Rev. Plant Disease . 2018;102(4): 823-824.

Chen YM, Huang TC, Liu HL, Chao CH. 2015. First report of the powdery mildew Podosphaera xanthii on Gynura bicolor. Australas Plant Dis Notes 10:27. [en línea] 2015 septiembre 28 [Fecha de acceso 17 de diciembre de 2019]. URL disponible en: URL disponible en: https://link.springer.com/article/10.1007/s13314-015-0177-y .

Most read articles by the same author(s)