Identification of Chili Pepper Genotypes (Capsicum spp.) Resistant to Meloidogyne enterolobii

Marques, Mônica Lau Silva; Chadud, J. V. G.; Oliveira, Menezes; Nascimento, A. R.; Rocha, Mara Rúbia da

doi:10.5539/jas.v11n8p165

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…Two pepper genotypes were chosen (Capsicum spp.) based on previous studies (Marques et al, 2019), which presented resistance and susceptibility to M. enterolobii, with RF equal to 0.08 (C. chinense -UFGCCH 24 'Bode Roxa') and 7.21 (Capsicum baccatum -UFGCBA 3 'Cambuci'). UFGCCH stands for Universidade Federal de Goiás, Capsicum chinense genotype 24 and UFGCBA 3 stands for Universidade Federal de Goiás, Capsicum baccatum genotype 3…”

Section: Methodsmentioning

confidence: 91%

Penetration and development of Meloidogyne enterolobii in resistant and susceptible Capsicum spp.

Marques¹,

Oliveira²,

Pereira³

et al. 2020

Europ.J.Hortic.Sci

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root-knots. The life cycle comprises the eggs, four juvenile stages and adult male or female. Eggs are enclosed in gelatinous egg sacs that are usually deposited on the surface of galled roots. The first moult occurs within the egg giving rise to the second-stage juvenile (J2), which is the infective stage. Three other moults occur within the roots allowing the nematode to go through the stages J3, J4, and adults (Karssen and Moens, 2006). The species M. enterolobii was detected for the first time in Brazil in the states of Pernambuco and Bahia, causing severe damages in guava orchards (Carneiro and Almeida, 2001). In vegetables, it was detected for the first time in the state of São Paulo, parasitizing green pepper (Capsicum annuum) cultivar Silver and tomato (Solanum lycopersicum) cultivars ' Andrea' and 'Debora', all known to be resistant to M. incognita and M. javanica (Carneiro et al., 2006). This ability of M. enterolobii to parasite plants resistant to other species of Meloidogyne makes it a difficult-to-control nematode (Bitencourt and Silva, 2010). This species presents a wide polyphagia and highly aggressive behavior for most vegetable species in comparison to M. incognita and M. javanica (Pinheiro and Pereira, 2012). Cultivars of tomato and pepper that have resistance to M. incognita, M. javanica and M. arenaria carry the Mi gene that gives the plant a hypersensitivity reaction (HR) causing histological changes, such as cell death near the infection site (Dropkin, 1969). This usually occurs 12 hours after attempted infection. However, the resistance conferred by the Mi-1 gene is unstable and can be compromised by soil temperatures above 28°C (Dropkin, 1969). In addition, there are species and races of Meloidogyne that have the ability to break the resistance conferred by the Mi gene, which makes

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Section: Methodsmentioning

confidence: 91%

Penetration and development of Meloidogyne enterolobii in resistant and susceptible Capsicum spp.

Marques¹,

Oliveira²,

Pereira³

et al. 2020

Europ.J.Hortic.Sci

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show abstract

“…Another species that has gained importance recently is M. enterolobii for which, the sources of resistance against the major species of Meloidogyne are ineffective on its control [273]. Two genotypes, named UFGFR 05 (C. frutescens) and UFGCH 24 (C. chinense) are recently identified as resistant to M. enterolobii [269].…”

Section: Root-knot Nematodesmentioning

confidence: 99%

Overview of Biotic Stresses in Pepper (Capsicum spp.): Sources of Genetic Resistance, Molecular Breeding and Genomics

Parisi¹,

Alioto

Tripodi³

2020

IJMS

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Pepper (Capsicum spp.) is one of the major vegetable crops grown worldwide largely appreciated for its economic importance and nutritional value. This crop belongs to the large Solanaceae family, which, among more than 90 genera and 2500 species of flowering plants, includes commercially important vegetables such as tomato and eggplant. The genus includes over 30 species, five of which (C. annuum, C. frutescens, C. chinense, C. baccatum, and C. pubescens) are domesticated and mainly grown for consumption as food and for non-food purposes (e.g., cosmetics). The main challenges for vegetable crop improvement are linked to the sustainable development of agriculture, food security, the growing consumers’ demand for food. Furthermore, demographic trends and changes to climate require more efficient use of plant genetic resources in breeding programs. Increases in pepper consumption have been observed in the past 20 years, and for maintaining this trend, the development of new resistant and high yielding varieties is demanded. The range of pathogens afflicting peppers is very broad and includes fungi, viruses, bacteria, and insects. In this context, the large number of accessions of domesticated and wild species stored in the world seed banks represents a valuable resource for breeding in order to transfer traits related to resistance mechanisms to various biotic stresses. In the present review, we report comprehensive information on sources of resistance to a broad range of pathogens in pepper, revisiting the classical genetic studies and showing the contribution of genomics for the understanding of the molecular basis of resistance.

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“…Table 2 shows differences between susceptible and resistant genotypes regarding RF and the Pf of the nematodes in the roots. According to the criterion of Oostenbrink (1966), it is considered a resistant plant with RF <1 and susceptible with RF >1.0, an expected result since these genotypes have been previously evaluated (Marques et al, 2019). However, there were no differences between the nematode density (number of nematodes per 10 g of roots), demonstrating that in both Capsicum spp.…”

Section: Discussionmentioning

confidence: 99%

“…After previous studies that found Capsicum spp. genotypes resistant to M. enterolobii (Marques et al, 2019) it is important to identify the mechanisms involved in the resistance, which may be related to the plant's biochemical defence. Therefore, the objective of this study was to compare the biochemical defence response of two chilli pepper ( Capsicum spp.)…”

Section: Introductionmentioning

confidence: 99%

Biochemical response of resistant and susceptible Capsicum spp. to Meloidogyne enterolobii

Marques

Jesus

Oliveira

et al. 2023

Journal of Phytopathology

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One of the most important events for the success of parasitism is the nematode recognition of chemical signals exuded by the host plant. In response to the establishment of interactions, plants have evolved improved defence mechanisms. The present study aimed to identify resistance mechanisms by comparing the biochemical defence response of two chilli pepper (Capsicum spp.) genotypes (Bode roxa A‐resistant and Cambuci‐susceptible) to Meloidogyne enterolobii. The activity of β‐1,3‐glucanase (GLU), peroxidase, chitinase (CHI), phenylalanine ammonia‐lyase and lipoxygenase (LOX) was evaluated in the leaves and the roots at 7, 14, 21, 28 and 35 days after inoculation. There was an increase of GLU and CHI in leaves, and LOX in leaves and roots activities, of the resistant genotype (Bode roxa A). These results allow a better understanding of the defence mechanisms involved in the resistance of Capsicum spp. to M. enterolobii, which is an important step in developing management strategies for this pathosystem.

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Identification of Chili Pepper Genotypes (Capsicum spp.) Resistant to Meloidogyne enterolobii

Cited by 7 publications

References 6 publications

Penetration and development of Meloidogyne enterolobii in resistant and susceptible Capsicum spp.

Penetration and development of Meloidogyne enterolobii in resistant and susceptible Capsicum spp.

Overview of Biotic Stresses in Pepper (Capsicum spp.): Sources of Genetic Resistance, Molecular Breeding and Genomics

Biochemical response of resistant and susceptible Capsicum spp. to Meloidogyne enterolobii

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