Comparación de métodos de inoculación de Fusarium solani f. sp. passiflorae en plántulas de maracuyá (Passiflora edulis f. flavicarpa)

Ángel-García, Carolina; Robledo-Buriticá, Jacobo; Castaño-Zapata, Jairo

doi:10.31910/rudca.v21.n1.2018.659

Cited by 10 publications

(3 citation statements)

References 5 publications

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“…These methods show greater success in inducing symptom development in plants under controlled conditions, but they fail to mimic the natural infection process triggered by F.sp. in plants (Ángel et al, 2018;Forero et al, 2015).…”

Section: Results and Discusionmentioning

confidence: 99%

Artificial infection with Fusarium solani f.sp. passiflorae in plants of passion fruit under controlled conditions

Martinez-Lemus,

Osorio-Cardona,

Hio

et al. 2023

rcia

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Controlled infection systems constitute a valuable tool in the study of pathosystems, as they enable the observation and measurement of specific characteristics with greater precision and ease compared to natural conditions. Additionally, they are useful for exploring and identifying sources of resistance in host populations. However, the plant's response to infection can vary depending on the inoculation method; invasive methods can damage plant parts, thus facilitating pathogen entry even in the presence of certain resistance mechanisms. The purpose of this study was to evaluate the reproducibility of an artificial infection protocol and an assessment scale for primary symptoms at the stem base/root collar, as well as secondary symptoms in leaves and roots of two Passiflora species. We evaluated the effects of inoculating planting substrates of sweet granadilla and purple passion fruit plants with three concentrations of F. solani f. sp. passiflorae (0.5 × 106, 1 × 106, and 2 × 106 conidia gram-1 of substrate), using non-inoculated plants as controls under controlled conditions. These treatments were tested in two separate experiments performed in 2017 and 2020. The study included symptom development readings integrated in a disease severity index (SI) for collar rot. Both experiments showed severity indices greater that 56%, indicating a high level of efficacy of the inoculation system for replicating disease symptoms in greenhouse settings. Our inoculation method reflects the conditions of natural infection of F. solani in sweet granadilla and purple passion fruit plants; it could be suitable for epidemiological and disease control studies, as well as for routine germplasm screening to identify sources of resistance.

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Section: Results and Discusionmentioning

confidence: 99%

Artificial infection with Fusarium solani f.sp. passiflorae in plants of passion fruit under controlled conditions

Martinez-Lemus,

Osorio-Cardona,

Hio

et al. 2023

rcia

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“…Tests were carried out by performing a stem incision on completely healthy plants. A deep cut was made at the base of the stem with a sterile blade and the inoculum was added per 5 ml per plant with a concentration of 3x10 6 macroconidia/ml (Ángel-García et al, 2018).…”

Section: Activation Of F Oxysporum To Produce the Inoculummentioning

confidence: 99%

Responses of landraces and commercial cultivars of yellow passion fruit to the prevalence of Fusarium oxysporum

Bernal Moreno,

Rodríguez

2023

Agron. Colomb.

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Yellow passion fruit (Passiflora edulis f. flavicarpa) is a fruit of high economic potential in Colombia, but the prevalence of some diseases often makes growers stop cultivating it. Also, varieties´ tolerance against some pathogens that have high prevalence in Colombia have not been released. The objective of this study was to contribute to the characterization of 63 populations of yellow passion fruit, including 46 cultivars and 17 landraces. The plants were evaluated using morphoagronomic descriptors (leaves, flowers, and fruits) as well as ecophysiological parameters (stomatal conductance, chlorophyll content, and degree of chlorosis) evaluated against the 21-02129 strain of Fusarium oxysporum isolated from purple passion fruit (gulupa, in Spanish). Results showed low levels of germination (55% landraces and 50% cultivars). The landraces populations showed greater morphological variability and greater tolerance to the pathogen expressed by the chlorophyll concentration from intact leaf samples on 28 d post inoculation (dpi) (landraces: 458±108 μmol m-2 and cultivars: 411±125 μmol m-2) and stomatal conductance (landraces: 90.8±14.9 mmol m-2 s-1 and cultivars: 87.1±34.1 mmol m-2s-1). The study revealed a good potential for tolerance to this pathogen in landraces, so it is necessary to carry out research aimed at preserving this diversity in situ and ex situ as well as a continuous analysis of these populations.

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“…The damage caused by F. solani to the passion fruit culture is serious, resulting in reduced production, cultivated area and orchard longevity. In addition to Brazil (Preisigke et al, 2015;Marostega et al, 2019), other producing countries recorded economic damage caused by this fungus, as in Colombia, where they reported losses between 90% and 100% in commercial crops (Ángel-García et al, 2018) and China (Wang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Different strategies for estimating genetic parameters for collar rot resistance characteristics in Passiflora spp.

Marostega

Preisigke

Chimello

et al. 2021

Chil. j. agric. res.

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The use of several strategies for estimating genetic parameters in passion fruit (Passiflora spp.) segregating populations has important implications for understanding the nature of variances, especially the traits of resistance to collar rot. The objective of this study was to estimate genetic parameters and predict gains with the selection of genotypes resistant to collar rot in a population of interspecific passion fruit hybrids. For the analysis of restricted maximum likelihood/ best linear unbiased prediction (REML/BLUP), 40 interspecific hybrids obtained by crossing resistant wild species with Passiflora edulis Sims genotypes were analyzed. The Comstock and Robinson Design II methodology used two male parents (P. nitida Kunth and P. quadrangularis L.) and two female parents of P. edulis. The evaluations took place for 33 d and 10 variables of resistance to collar rot were characterized. The expression of most variables was due to the genetic effect. Dominance effects predominated. High estimates of heritability based on clone average and selective accuracy were observed, which provides favorable gains in reducing the severity of collar rot by selecting the genotypes 115-5,

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Comparación de métodos de inoculación de Fusarium solani f. sp. passiflorae en plántulas de maracuyá (Passiflora edulis f. flavicarpa)

Cited by 10 publications

References 5 publications

Artificial infection with Fusarium solani f.sp. passiflorae in plants of passion fruit under controlled conditions

Artificial infection with Fusarium solani f.sp. passiflorae in plants of passion fruit under controlled conditions

Responses of landraces and commercial cultivars of yellow passion fruit to the prevalence of Fusarium oxysporum

Different strategies for estimating genetic parameters for collar rot resistance characteristics in Passiflora spp.

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