Passion Fruit (Passiflora spp.) species as sources of resistance to soil phytopathogens Fusarium solani and Fusarium oxysporum f. sp. Passiflorae complex

Abstract

The stem rot and fusarium vascular wilt are among the main factors the most limiting the passion fruit cultivation in the State of Mato Grosso. This study aimed to evaluate the resistance / susceptibility of the genus Passiflora species to soil pathogens from different biomes of Mato Grosso (Cerrado, Pantanal and Amazon). The part I evaluated the response of P. edulis Sims, P. foetida, P. nitida and P. quadrangularis on eight isolates of F. solani. In part II was evaluated the genotypes P. edulis Sims, P. mucronata, P. foetida, P. nitida and P. morifolia on three isolates of F. oxysporum f. sp. passiflorae. The experimental design was randomized blocks in factorial arrangement (genotypes x isolates). The statistical analysis used for both steps were the variance analyses by F test and grouping of averages of genotypes by Scott-Knott test (P =0.05). Among the isolates of F. solani was found that isolates FS8A and FS3P are more aggressive, indicating genetic variability among isolates. The most resistant genotypes to the pathogen were P. nitidaand P. foetida. Among the isolates of F. oxysporum f. sp. passiflorae there was no significant difference in aggressive levels, and the P. mucronata and P. nitida species are more resistant to Fusarium. Thus genotypes P. nitida, foetida and P. mucronatacan be indicated as a resistance source to improvement of commercial passionfruit programs.

Characterizing the Interaction Between Root-knot Nematodes and Soil-borne Fungi which are Pathogenic to Passion Fruit (Passiflora edulis)

“…Field observations in Brunei, Brazil, and Venezuela also led to suggestions that R. reniformis increases the severity of P. nicotianae f.sp. parasitica, F. nirenbergiae, and Fusarium sp., but no data were provided (Peregrine and Yunton, 1980;Liberato, 2002;Castellano et al, 2012). Synergy between pathogens has been mentioned but was never properly investigated for over 40 years.…”

Fusarium nirenbergiae (Fusarium oxysporum Species Complex) Causing the Wilting of Passion Fruit in Italy

“…Therefore, disease management should be focused mainly on preventative and pathogen exclusion measures, avoiding plantation in areas with a severe history of Fusarium wilt infections or selecting healthy propagation material in combination with adequate agronomic practices. Additionally, other sustainable strategies should include the use of resistant cultivars, as recommended by several authors [24,25]. Comprehensively, the increasing trend of tropical plantations in Italy leads us to focus more on fungal diseases that could represent limiting factors for future production.…”

REACTION OF PASSION FRUIT GENOTYPES TO THE COMPLEX Meloidogyne incognita AND Fusarium solani

“…Then, 40 mL of sterilized distilled water were added to the Petri dishes and, with the aid of a brush, the conidia were disaggregated. The suspension was filtered in a sterilized gauze, and the concentration of spores was calibrated in a hemacytometer to 1×10 6 spores/mL (CARVALHO, et al, 2021;ROCHA, et al, 2018;SILVA, et al, 2013).…”