Survival of Xanthomonas campestris pv. campestris associated with soil and cauliflower crop debris under Brazilian conditions

Autor(es)

Silva Junior, T. A. F. ^[1] ; Silva, J. C. ^[1] ; Goncalves, R. M. ^[1] ; Soman, J. M. ^[1] ; Passos, J. R. S. ^[2] ; Maringoni, A. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista Julio de Mesquita Filho UN, Dept Protecao Vegetal, FCA, Ave Univ 3780, BR-18610034 Botucatu, SP - Brazil

^[2] Univ Estadual Paulista, Dept Bioestat, Inst Biociencias, POB 510, BR-18618970 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: European Journal of Plant Pathology; v. 156, n. 2 NOV 2019.
• Citações Web of Science: 0

Resumo

This study investigated the survival of Xanthomonas campestris pv. campestris (Xcc) in the soil, under field and controlled conditions, and associated with cauliflower crop debris. Under field conditions, the soil temperature influenced the survival of Xcc, and the bacterium survived from 4 to 7 days. Under controlled conditions, the soil type and temperature influenced Xcc survival. Depending on the texture, pH and organic matter content of the soil, the bacterium survived from 10 to 24 days. Xcc survived in the soil for 14 days at 20 degrees C, and for 4 days when incubated at 30 degrees C. The soil moisture did not influence Xcc survival of 14 days at the three moisture contents evaluated. Similar behaviour was observed regarding the survival of four Xcc strains in the soil. The longest period of Xcc survival associated with cauliflower debris was 255 days. Our results suggest that the soil is not an important source of inoculum for Xcc. Considering the survival periods of Xcc in cauliflower crop residues under the Brazilian conditions studied, we recommend crop rotation with non-host species of Xcc for 1 year. This information may also be useful for the management of black rot in other brassica-producing countries. (AU)

• Processo FAPESP: 11/18527-0 - Xanthomonas campestris pv. campestris: sobrevivência e detecção de nichos ecológicos em campos de cultivo de brássicas com ocorrência de podridão-negra
• Beneficiário: Tadeu Antônio Fernandes da Silva Júnior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 12/13298-5 - Capacidade de sobrevivência de Xanthomonas campestris pv. campestris associada ao solo sob condições controladas e de campo
• Beneficiário: Antonio Carlos Maringoni
• Modalidade de apoio: Auxílio à Pesquisa - Regular