Survival of Xanthomonas campestris pv. campestris in the phyllosphere and rhizosphere of crops

Autor(es)

da Silva, Joao Cesar ^[1] ; da Silva Junior, Tadeu Antonio Fernandes ^[1] ; Soman, Jose Marcelo ^[1] ; do Nascimento, Daniele Maria ^[1] ; de Melo, Luana Laurindo ^[1] ; Oliveira, Leticia Rodrigues ^[1] ; Sartori, Maria Marcia Pereira ^[2] ; Maringoni, Antonio Carlos ^[1]

Afiliação do(s) autor(es)

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

^[2] Univ Estadual Paulista Julio de Mesquita Filho UN, FCA, Dept Prod & Melhoramento Vegetal, Ave Univ 3780, BR-18610034 Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLANT AND SOIL; v. 462, n. 1-2 FEB 2021.
• Citações Web of Science: 0

Resumo

Aims Xanthomonas campestris pv. campestris (Xcc) survival was evaluated in the phyllosphere and rhizosphere of 20 crop species, as well as in the rhizosphere of cabbage cultivated in six soil types. Methods The crops aerial parts were inoculated, and the rhizosphere soil was infested with bacterial suspension (10(7) CFU.mL(-1)) of 3098C Xcc strain, which is rifampicin-resistant and pathogenic to brassica plants. Xcc recovery from the samples was performed in a semi-selective culture medium. Results The highest average survival periods of Xcc in the phyllosphere were obtained from cabbage (70 days), tomato (67 days), wheat and pumpkin (63 days), black oat and radish (56 days) and sweet pepper (49 days). Low Xcc survival occurred in the rhizosphere of most crops evaluated when compared to the soil in the absence of plants. The highest average period of survival in the rhizosphere was observed for cabbage (53 days). Survival periods in lettuce, pumpkin, wheat and mustard ranged from 21 to 28 days. In the rhizosphere of cabbage cultivated in six soils, survival periods ranged from 8 to 17 days. Conclusions Sunflower, carrot, zucchini, spinach, sunn hemp, sorghum, maize and chive are recommended for rotating systems with brassicas because Xcc showed low survival in the phyllosphere and rhizosphere of these crops. (AU)

• Processo FAPESP: 17/13822-0 - Nichos de sobrevivência e disseminação de Xanthomonas campestris pv. campestris, agente causal da podridão negra das brássicas
• Beneficiário: João César da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado