First report of sesame spot caused by Xanthomonas campestris pv. sesami in Sinaloa, Mexico

Rubén Félix-Gastélum, Ignacio E. Maldonado-Mendoza, Noel G. Olivas-Peraza, Ofelda Peñuelas-Rubio, Karla Y. Leyva-Madrigal, Rocio Cervantes-Gámez, Glenda J. Lizarraga-Sanchez, Rosa M. Longoria-Espinoza

Research output: Contribution to journalComment/debate

Abstract

A new disease on sesame (Sesamum indicum L.) plants was observed in the municipalities of Ahome, El Fuerte and Choix in the state of Sinaloa, Mexico during the summer of 2014. The disease occurred during the rainy season (August–September) when temperatures ranged between 27–40°C. The symptoms were lesions on leaves, petioles, stems and capsules. Up to 100% incidence was observed, and up to 50% of the foliage exhibited symptoms under field conditions. Isolations were made from leaves and a bacterium was consistently recovered on nutrient agar medium. Based on physiological and biochemical tests, as well as sequences from three different DNA regions, the bacterium was identified as Xanthomonas campestris pv. sesami. Pathogenicity tests confirmed the ability of select isolates to cause symptoms similar to those observed under field conditions.

Original languageEnglish
Pages (from-to)296-300
Number of pages5
JournalCanadian Journal of Plant Pathology
Volume41
Issue number2
DOIs
StatePublished - 3 Apr 2019

Keywords

  • Aetiology
  • Sesamum indicum
  • bacterial disease
  • bacterial leaf spot and blight
  • molecular identification
  • physiological and biochemical tests

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