First Report of <i>Phytophthora capsici</i> Causing Wilting and Root and Crown Rot on <i>Capsicum annuum</i> (Bell Pepper) in Ecuador

Vélez‐Olmedo, Jefferson Bertin; Cardozo, Luis Alberto; Corozo, Liliana; Bonfim, Bianca S. A.; Vélez‐Zambrano, Sergio Miguel; Arteaga, Francisco; García, Mario; Pinho, D. B.

doi:10.1094/pdis-11-19-2432-pdn

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…Therefore, this phenomenon could be associated with the combined action of various genes governing resistance in the aforementioned genotypes (Naegele and Hausbeck, 2020). In Ecuador, the presence of P. capsici has been reported as the causal agent of root and crown rot (Veĺez-Olmedo et al, 2020) and the evaluation of resistance in commercial pepper cultivars to the pathogen (Saltos et al, 2020). However, the resistance of Capsicum germplasm with resistance to P. capsici has not been explored.…”

Section: Discussionmentioning

confidence: 99%

“…Isolate Pc3 of P. capsici was used as inoculum for pathogenicity tests (Veĺez-Olmedo et al, 2020). The pseudo-fungus was cultured in V8 agar culture medium (20%) at room temperature 24 ± 2 °C and under constant fluorescent light (Foster and Hausbeck, 2010).…”

Section: Phytophthora Capsicimentioning

confidence: 99%

“…Capsicum crops can be affected by pest and disease problems caused by various arthropods and pathogens. Diseases include root and crown rot and stem blight caused by Phytophthora capsici Leonian (Peronosporaceae) (Retes-Manjarrez et al, 2020;Veĺez-Olmedo et al, 2020) and damage caused by the whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) (Singh and Joshi, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Can Capsicum spp. genotypes resist simultaneous damage by both Phytophthora capsici and Bemisia tabaci? Can natural enemies of Bemisia complement plant resistance?

Corozo-Quiñónez,

Chirinos,

Saltos-Rezabala

et al. 2024

Front. Ecol. Evol.

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Capsicum (Solanaceae) includes peppers and chilies. Phytophthora capsici (Peronosporaceae) and Bemisia tabaci (Hemiptera: Aleyrodidae) are two relevant problems in the production of this genus. Among the sustainable alternatives for disease and pest control, plant resistance and biological control stand out. The main objective of this research was to evaluate the resistance of Capsicum genotypes to damage by P. capsici and infestation by B. tabaci, as well as to diagnose whether the action of predators and parasitoids against B. tabaci could complement the resistance of the plants. The progression of disease caused by P. capsici and infestation by B. tabaci was estimated in 23 Capsicum genotypes, corresponding to the species: Capsicum annuum, Capsicum baccatum, Capsicum chinense, Capsicum frutescens and Capsicum. pubescens, from the GenBank of the National Institute of Agricultural Research (INIAP-Ecuador). Three genotypes: ECU-11993 (C. baccatum), ECU-11991 and ECU-2244 (C. pubescens) showed high susceptibility to both P. capsici damage and B. tabaci infestation. C. baccatum, C. chinense and C. frutescens genotypes showed the highest resistance to both pests, suggesting multiple resistance. Six taxa of predators and parasitoids reduced B. tabaci populations that developed in the most infested genotypes. Plant resistance is a control alternative that could allow the use of biological control, making it environmentally friendly. These results provide the basis for breeding programs in Capsicum.

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Section: Discussionmentioning

confidence: 99%

Section: Phytophthora Capsicimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Can Capsicum spp. genotypes resist simultaneous damage by both Phytophthora capsici and Bemisia tabaci? Can natural enemies of Bemisia complement plant resistance?

Corozo-Quiñónez,

Chirinos,

Saltos-Rezabala

et al. 2024

Front. Ecol. Evol.

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“…Peppers have great economic and cultural importance in Mexico and around the world, and as the population grows, so does the demand for food, which has led to extensive and intensive use of agrochemicals to increase agricultural production and control plant diseases [19,20]. In this sense, wilt in peppers can be caused by Rhizoctonia solani, Phytophthora capsici, F. oxysporum complex, and F. solani complex [6,7,59,60]. In this study, six Fusarium isolates were obtained from symptomatic Jalapeño pepper plants in commercial fields located in the Yaqui Valley, Mexico; however, based on Koch's postulates, only strain F. languescens CE2, which belongs to FOSC, was identified as pathogenic, being the responsible of this disease under the used experimental conditions.…”

Section: Discussionmentioning

confidence: 99%

Biological Control Mechanisms of Bacillus cabrialesii subsp. tritici TSO2T against Fusarium languescens, the Causal Agent of Wilt in Jalapeño Peppers

Montoya-Martínez,

Figueroa-Brambila,

Escalante-Beltrán

et al. 2023

Horticulturae

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Jalapeño peppers (Capsicum annuum var. Jalapeño) represent one of the most important crops in Mexico. However, many plant diseases, such as wilt caused by strains of the genus Fusarium, reduce its yield. A sustainable alternative to control diseases is the use of biological control agents (BCAs), for example, beneficial microorganisms such as strains of the genus Bacillus. This study aims to analyze the potential use of B. cabrialesii subsp. tritici TSO2T as a BCA and elucidate its potential modes of action against Fusarium strains causing wilt in Jalapeño peppers. For this, symptomatic samples were collected in a commercial field in the Yaqui Valley, Mexico. Six Fusarium isolates were morphologically and molecularly characterized. After pathogenicity tests, F. languescens CE2 was found to be pathogenic. In screening assays for biocontrol bacteria, strain TSO2T, which was isolated from soil in a wheat commercial field under an organic production system and preserved in the Culture Collection of Native Soil and Endophytic Microorganisms (COLMENA), had the best biocontrol effect against CE2, and its cell-free filtrate reduced mycelial growth by 30.95%. Genome mining (antiSMASH) of strain TSO2T allows us to identify gene clusters associated with biocontrol, such as fengycin, surfactin, bacillibactin, bacilysin, bacillaene, subtilosin A, and sporulation killing factor, which codify to antimicrobial metabolites and are associated with swarming motility of the studied beneficial strain. These results demonstrate the effectiveness of B. cabrialesii subsp. tritici TSO2T as a potential BCA for the control of Fusarium wilt, through competition and a complex of antifungal metabolites, which still need to be validated through metabolomic analysis. This study highlights the importance of the use of integrative genomic and bioactivity-guided methodologies in understanding biocontrol pathosystems.

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“…From 2002 onwards, the oomycete was reported affecting Capsicum spp. crops in different countries and regions such as Egypt [41], Spain [42], and Italy [43], China [44], Canada [45], Taiwan [46], Peru [47], Algeria [48], Mexico [49], Laos PDR [29], Pakistan, [50], Bhutan [22], Indonesia [51], Trinidad and Tobago [20] and Ecuador [52]. Despite the oomycete's reported geographical distribution affecting mainly chili and sweet peppers, some other countries could be affected, but official reports are missing.…”

Section: Occurrence Of Phytophthora Capsici Worldwidementioning

confidence: 99%

Phytophthora capsici on Capsicum Plants: A Destructive Pathogen in Chili and Pepper Crops

Moreira-Morrillo¹,

Monteros-Altamirano²,

Reis³

et al. 2023

Capsicum - Current Trends and Perspectives

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Capsicum from tropical and subtropical America, is an important genus for the nutritional, economic and cultural values of its species. At the same time, the Capsicum species are affected by diseases caused by viruses, bacteria, fungi and pseudofungi, in particular the oomycete Phytophthora capsici. This phytopathogen causes great damage and losses in different Capsicum species, because it infects all plant organs causing root, crown and fruit rot; and, leaf blight. The polycyclic dispersion through zoospores and sporangia, the limited availability of resistant genotypes, and the reduced diversity of effective oomyceticides (fungicides), make P. capsici one of the most complex phytopathogens to be managed worldwide specially in field conditions. However, successful management of P. capsici depends on the knowledge of the pathogen, its interaction with the susceptible host and the methods of control used. Thus, this chapter addressed the etiology, symptomatology, occurrence and management of the disease. Additionally, the cycle of the disease is discussed in a holistic and simple way.

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First Report of Phytophthora capsici Causing Wilting and Root and Crown Rot on Capsicum annuum (Bell Pepper) in Ecuador

Cited by 11 publications

References 4 publications

Can Capsicum spp. genotypes resist simultaneous damage by both Phytophthora capsici and Bemisia tabaci? Can natural enemies of Bemisia complement plant resistance?

Can Capsicum spp. genotypes resist simultaneous damage by both Phytophthora capsici and Bemisia tabaci? Can natural enemies of Bemisia complement plant resistance?

Biological Control Mechanisms of Bacillus cabrialesii subsp. tritici TSO2T against Fusarium languescens, the Causal Agent of Wilt in Jalapeño Peppers

Phytophthora capsici on Capsicum Plants: A Destructive Pathogen in Chili and Pepper Crops

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