Begomovirus Menace and Its Management in Vegetable Crops

Sagar, Vidya; Karmakar, Pradip; Devi, Jyoti; Gupta, Nitika; Meena, B. L.

doi:10.1007/978-981-15-1322-0_26

Cited by 7 publications

(5 citation statements)

References 114 publications

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“…Indeed, Jacas et al (2010) reported that biological control has been very effective in managing whiteflies. The lacewings and Clitostethus arcuatus (Rossi, 1794), for instance, are the main predators of whiteflies (Sagar et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Preučevanje nihanja napada agrumovega ščitkarja (<i>Dialeurodes citri</i> [Ashmead, 1885]) in njegovih plenilcev v ekološki pridelavi pri različnih podnebnih razmerah: vzorčna raziskava iz severozahodne Alžirije

MAHMOUDI,

ALLAL BENFEKIH,

GOOSEN

2024

aas

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The citrus pest, Dialeurodes citri (Ashmead, 1885), poses a significant threat to citrus crops, impacting growth. Various control methods, including biological measures using natural predators like Clitostethus arcuatus (Rossi, 1794), Chrysoperla carnea (Stephens, 1836), and Semidalis aleyrodiformis (Stephens, 1836), were studied over a year in the Chlef region of northwest Algeria. Results indicated that a temperature range of 19.5 °C to 30.5 °C, with 65 % humidity and no precipitation, favored the emergence of D. citri adults. Throughout the study, S. aleyrodiformis and C. arcuatus emerged as the predominant predators. A strong negative correlation (r = -0.91) was observed between D. citri abundance and C. arcuatus caught on traps. The correlation between nymphal infestation rates and monthly average temperatures was negative (r = -0.72), with temperatures ranging from 13 °C to 27 °C and humidity between 47 % and 73 %, conducive to D. citri nymphal infestation. Precipitation negatively impacted D. citri and its predators, causing a decline in adult numbers during the rainy season. The overarching goal is to establish an integrated biological control system, bolstering the economic viability of citrus cultivation in the region.

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Section: Introductionmentioning

confidence: 99%

Preučevanje nihanja napada agrumovega ščitkarja (<i>Dialeurodes citri</i> [Ashmead, 1885]) in njegovih plenilcev v ekološki pridelavi pri različnih podnebnih razmerah: vzorčna raziskava iz severozahodne Alžirije

MAHMOUDI,

ALLAL BENFEKIH,

GOOSEN

2024

aas

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“…YMV can also persist in weed reservoirs, facilitating its survival and spread during off seasons. Efficient management strategies for YMV are crucial for sustainable green gram production [14,15]. These strategies encompass a combination of cultural practices, such as removing host and infected plants, crop rotation, and control of insect vectors [16].…”

Section: Introductionmentioning

confidence: 99%

Yellow Mosaic Virus (YMV) in Green Gram: Impacts, Management, and Future Perspectives

Kumar

Walia

Sandal

2023

IJECC

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Yellow mosaic virus (YMV) is a destructive viral pathogen that affects green gram (Vigna radiata) crops, leading to significant yield losses and economic repercussions. This review paper provides a comprehensive analysis of the impacts of YMV on green gram cultivation, explores the current management strategies employed to combat the disease, and discusses future perspectives for effective YMV control and prevention. YMV is primarily transmitted through whiteflies and infects green gram plants at various stages of growth, causing severe symptoms such as leaf yellowing, stunted growth, and mosaic patterns. These symptoms ultimately lead to reduced crop yield and quality. The virus poses a major threat to green gram production globally, demanding urgent attention and effective management practices. Various management approaches have been employed to mitigate the impact of YMV. Cultural practices, including proper field sanitation, weed control, and crop rotation, play a vital role in disease management. Insecticide application, use of yellow sticky traps, and whitefly population monitoring are important components of integrated pest management strategies aimed at reducing virus transmission. Additionally, the development and deployment of resistant cultivars through conventional breeding and biotechnological approaches have shown promise in minimizing YMV infection and its associated losses. Despite these efforts, YMV continues to pose significant challenges to green gram production, necessitating further research and innovative approaches. Future perspectives for YMV management involve the integration of advanced technologies such as molecular diagnostics, genome editing, and RNA interference to enhance disease resistance in green gram varieties. Additionally, promoting awareness among farmers about YMV symptoms, preventive measures, and adoption of integrated disease management strategies will contribute to sustainable green gram production. In conclusion, YMV represents a major threat to green gram cultivation, affecting crop productivity and economic sustainability. This review emphasizes the need for concerted efforts to develop comprehensive YMV management strategies. By combining conventional and modern techniques, effective disease control measures can be implemented to mitigate the impact of YMV and secure the future of green gram production.

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“…The characteristic symptomatology that begomoviruses generate in their hosts mainly includes yellowing, mosaic, curling and leaf curling (Sagar et al, 2020). Symptoms caused by the ToLCNDV-ES strain on cucurbits are similar to those caused by Asian isolates (Malathi et al, 2017), with leaf curling, intense mosaic, yellowing in leaves, vein thickening in young leaves, internodal shortening, dwarfing, and inhibition of plant development .…”

Section: Visual Evaluation Of Tolcndv Symptomatology In Cucurbitsmentioning

confidence: 99%

“…Cucurbits require specific climatic conditions for their cultivation. However, the increasingly widespread use of hybrid seeds and the prolongation of the warm seasons make it possible to continue cultivation during the year in a greenhouse or in extensive cultivation in the open air, favoring survival and overlap of generations of virus-transmitting vectors Sagar et al, 2020).…”

Section: Incidence and Virus Control In Cucurbitaceaementioning

confidence: 99%

“…These genes have been transferred to different commercial varieties (Rojas et al, 2018;Sagar et al, 2020). Although the resistance provided by each may differ depending on the growing environment, temperature, virulence of each isolate, or their capacity to provide immunity to begomoviruses with a single-partite genome, while failing to do so for those with a bipartite genome (Rojas et al, 2018).…”

Section: Genetic Resistance To Tolcndvmentioning

confidence: 99%

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First report of Cucurbit Chlorotic Yellows Virus (CCYV) and Tomato Leaf Curl New Delhi Virus (ToLCNDV) in Algeria and lack of evidence for seed transmission of ToLCNDV in melon and pumpkin.

Kheireddine

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Emerging plant viruses in the Mediterranean Basin have arisen in the last decades becoming an important threat to crop production in this region. The spread of new viral diseases has become one of the main factors limiting agronomic and economic yields of cultivated species of Cucurbitaceae family, the second in importance after Solanaceae. A wide cluster of elements modulates and favors the emergence of these pathogens, including biological, ecological, social, and cultural factors. Global warming favors vector movement to new geographies, while global commercial networks lead to germplasm trade among countries, allowing the long-distance dissemination of viruses. Moreover, the intensive agricultural model, in which prevail genetically homogeneous cultivars, prompts pathogens outbreaks within new geographic areas at a fast rate.One of the key components to develop control strategies, and secure horticultural production, is to identify the type and distribution of viruses present in crops. However, such information in Algeria is scarce and very limited. The objective of this Doctoral Thesis was to identify and determine the prevalence and distribution of the most common viruses on cultivated cucurbit plants (zucchini, cucumber, and melon), and get information about their genetic variability and mode of dispersion.In this work, cucurbit chlorotic yellows virus (CCYV) was first detected infecting cucumber and zucchini in Algeria. CCYV (genus Crinivirus, family Closteroviridae) is part of a complex of whitefly-transmitted viruses that cause yellowing disease in cucurbits. Determination of the complete CP, and partial RdRp and Hsp70 sequences of an Algerian CCYV isolate was conducted to unveil the evolutionary relationships with the published isolates in databases. The phylogenetic analysis showed that the Algerian isolate clustered into group I together with the majority of the reported CCYV isolates. The genetic variation within this group was very low (nucleotide identity higher than 99.5%) despite their extensive and discontinuous geographical distribution, plant species (cultivated or weeds) and year of collection. This low genetic divergence could be due to the recentness of this virus that did not face major changes for the present time. In our case, the presence of CCYV was only detected in mixed infection with tomato leaf curl New Delhi virus (ToLCNDV). In future works, it will be interesting to check the likely synergistic or antagonistic interaction between these two viruses that may affect the symptoms development and spread between crops. SUMMARY viiiToLCNDV (genus Begomovirus, family Geminiviridae) was also first detected infecting cucurbit plants in Algeria. ToLCNDV is a bipartite begomovirus that causes destructive epidemics on economically valuable cucurbit and solanaceous crops. The complete DNA-A and DNA-B genomic sequences of a ToLCNDV isolate from cucumber (ToLCNDV-Biskra) were obtained.Alignments of the nucleotide sequences of DNA-A and DNA-B revealed identities of 98.7 and 97.6%, respectively, ...

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Begomovirus Menace and Its Management in Vegetable Crops

Cited by 7 publications

References 114 publications

Preučevanje nihanja napada agrumovega ščitkarja (<i>Dialeurodes citri</i> [Ashmead, 1885]) in njegovih plenilcev v ekološki pridelavi pri različnih podnebnih razmerah: vzorčna raziskava iz severozahodne Alžirije

Preučevanje nihanja napada agrumovega ščitkarja (<i>Dialeurodes citri</i> [Ashmead, 1885]) in njegovih plenilcev v ekološki pridelavi pri različnih podnebnih razmerah: vzorčna raziskava iz severozahodne Alžirije

Yellow Mosaic Virus (YMV) in Green Gram: Impacts, Management, and Future Perspectives

First report of Cucurbit Chlorotic Yellows Virus (CCYV) and Tomato Leaf Curl New Delhi Virus (ToLCNDV) in Algeria and lack of evidence for seed transmission of ToLCNDV in melon and pumpkin.

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