Histopathological evidence of concomitant sexual and asexual reproduction of Elsinoë ampelina in grapevine under subtropical climate

Braga, Zélia Valente; Santos, R. F.; Amorim, Lílian; Appezzato‐da‐Glória, Beatriz

doi:10.1016/j.pmpp.2020.101517

Cited by 9 publications

(6 citation statements)

References 42 publications

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“…When the sexual stage occurs, ascospores are produced in asci (12.9–34.3 × 12.6–29.6 µm), which contain eight ascospores each. Asci are globose or elliptical bitunicate and distributed irregularly in the upper part of the ascoma (Braga et al, 2020 ; Magarey, Coffey, et al, 1993 ). Ascospores are hyaline, one‐ to three‐septate and measure 15–16 × 4–5 µm (Braga et al, 2020 ; Shear, 1929 ).…”

Section: Characterization Of E Ampelinamentioning

confidence: 99%

“…Afterwards, moniliform hyphae are formed (Figure 2h ) and enlarged in intercellular and intracellular spaces of grape tissues during the colonization (Li et al, 2019 ). The collapse of epidermal and parenchyma cells is observed in the centre of lesions, where infected tissues become necrotic (Braga et al, 2020 ). As colonization develops, acervuli are formed on the lesions and new conidia are produced, which are dispersed by rain splash and infect other healthy grape tissues (Braga et al, 2020 ; Li et al, 2019 ).…”

Section: Disease Cycle Epidemiology and Managementmentioning

confidence: 99%

“…The collapse of epidermal and parenchyma cells is observed in the centre of lesions, where infected tissues become necrotic (Braga et al, 2020 ). As colonization develops, acervuli are formed on the lesions and new conidia are produced, which are dispersed by rain splash and infect other healthy grape tissues (Braga et al, 2020 ; Li et al, 2019 ). Suitable environmental conditions, such as high humidity and temperature, are required for intense conidia production, while light has little effect on sporulation (Kore & Gurme, 1978 ).…”

Section: Disease Cycle Epidemiology and Managementmentioning

confidence: 99%

“…However, the sexual stage is not found in many countries, which is possibly due to the absence of suitable mating types or the lack of harsh winter conditions that can promote ascocarp formation in grape tissues as an overwinter survival strategy (Magarey, Coffey, et al, 1993). Nevertheless, a recent study has shown that the asexual and the sexual stages have occurred concomitantly since the beginning of the epidemic under subtropical climates, but the role of ascospores in the epidemiology of the disease is unclear (Braga et al, 2020). Besides E. ampelina, a number of Colletotrichum species have been isolated from anthracnose lesions in the UK, Brazil, and India (Baroncelli et al, 2015;Santos et al, 2018a;Sawant et al, 2012aSawant et al, , 2012b.…”

Section: Introductionmentioning

confidence: 99%

“…Although some studies have been conducted to elucidate the molecular interactions between grape and E. ampelina (Ahn, Kim, Jo, et al, 2014;Gao et al, 2020), the underlying mechanisms remain unclear. In the past, most of the studies focused on pathogen identification and pathogenicity (Santos et al, 2018a(Santos et al, , 2018c, sporulation induction (Li et al, 2018;Santos et al, 2018b), characterization of the infection and colonization processes (Braga et al, 2019(Braga et al, , 2020Li et al, 2019), identification of resistant cultivars and hybrids (Hopkins & Harris, 2000;Poolsawat et al, 2012), development of molecular markers linked to disease resistance genes (Kim et al, 2008), and expression and screening of disease resistance-related genes (Gao et al, 2012;Seehalak et al, 2011;Vasanthaiah et al, 2010). Although many relevant studies have been published on grapevine anthracnose in recent years, in particular on the two genomes of E. ampelina recently published (Haridas et al, 2020;, a recent review of the literature for this pathosystem is not available.…”

Section: Introductionmentioning

confidence: 99%

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Current status and future prospects of grapevine anthracnose caused by Elsinoe ampelina: An important disease in humid grape‐growing regions

Santos

Gao

et al. 2021

Molecular Plant Pathology

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Section: Characterization Of E Ampelinamentioning

confidence: 99%

Section: Disease Cycle Epidemiology and Managementmentioning

confidence: 99%

Section: Disease Cycle Epidemiology and Managementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Current status and future prospects of grapevine anthracnose caused by Elsinoe ampelina: An important disease in humid grape‐growing regions

Santos

Gao

et al. 2021

Molecular Plant Pathology

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Prevalence of bean scab caused by Elsinoë phaseoli and challenges associated with bean cultivation in Kenya

Masheti,

Muthomi,

Muiru

et al. 2024

Plant Enviro Interactions

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This study investigated the prevalence of scab caused by Elsinoë phaseoli causing yield losses on beans in Kenya. The research focused on common practices and challenges faced by subsistence farmers with the aim of providing insights into scab prevalence, impact, and potential management challenges. A structured questionnaire was employed in a survey conducted in 2022 and 2023, covering major bean‐growing regions using a three‐stage sampling design. Data from 128 bean farmers included information on farm size, seed sources, cropping systems, awareness of challenges, and pest/disease management practices. Scab prevalence was determined by scouting for symptoms, with a total of 84 farms surveyed in 2021. The incidence of bean scab was confirmed in all surveyed clusters, indicating its widespread occurrence across various agro‐ecological zones. Farmers exhibited common practices such as preference for uniform bean seeds (61%), use of uncertified seeds (83%), intercropping (80%), and limited crop rotation. Challenges included disease and pest infestations, with limited diversity in management options. Confirmation of the presence of bean scab in diverse agro‐ecological zones emphasizes its importance and the need for further research on its impact and epidemiology. Challenges with crop rotation were evident due to small farm sizes and subsistence‐focused farming. The study recommends further research for a comprehensive understanding of the link between increased scab importance and current bean farming practices such as short rotation periods and the use of susceptible varieties. Training programs are also vital to improve farmers' knowledge on safe agro‐chemical use, ensuring sustainable constraint management in common bean cultivation in Kenya.

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Fungal Diseases of Green Organs

Viret,

Gindro

2024

Science of Fungi in Grapevine

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Globally, grapevines are grown on 7.3 million ha of land, producing 74 million tonnes of grapes for winemaking (45.7%), musts and juices (4.3%), fresh consumption (42.3%) and dried fruits (7.7%) (OIV 2022). Approximately 10,000 grapevine varieties are described, of which around 8000 are estimated to belong to Vitis vinifera, the most commonly planted species. Regardless of where grapes are grown and the specific cultivar, this species is vulnerable to the major fungal pathogens. This reality underscores the importance of fungi for viticulture—vines throughout the world face a more or less intense onslaught from fungal pathogens, depending on climatic conditions and vine and pathogen co-evolution. All green parts of the grapevine are potentially exposed to diseases that can trigger severe symptoms and economic losses.Although fungal pathogens have been well known since the mid-nineteenth century, their life cycles and relation to the grapevine remain partially shrouded in mystery. Consequently, fungicides are still used preventively, although the regular application of active ingredients is dependent on the unpredictable mid-to-long-term weather and disease forecast and may not always be necessary. Grapevine fungal pathogens are currently being researched worldwide, with new insights being reported for the most common and devasting diseases.

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Histopathological evidence of concomitant sexual and asexual reproduction of Elsinoë ampelina in grapevine under subtropical climate

Cited by 9 publications

References 42 publications

Current status and future prospects of grapevine anthracnose caused by Elsinoe ampelina: An important disease in humid grape‐growing regions

Current status and future prospects of grapevine anthracnose caused by Elsinoe ampelina: An important disease in humid grape‐growing regions

Prevalence of bean scab caused by Elsinoë phaseoli and challenges associated with bean cultivation in Kenya

Fungal Diseases of Green Organs

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