Molecular confirmation of Maize rayado fino virus as the Brazilian corn streak virus

Hammond, Rosemarie W.; Bedendo, Ivan Paulo

doi:10.1590/s0103-90162005000600015

Cited by 12 publications

(3 citation statements)

References 15 publications

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“…Thus, insects could be considered as both pest and reservoir, as well as vector of plant pathogen. To date, more than 700 plant diseases are known to be vector-borne threats to food health and security worldwide (Fletcher and Wayadande, 2002;Hammond and Bedendo, 2005;Hogenhout et al, 2008;Weintraub and Beanland, 2006). Vector density, feeding activity on the host, vector longevity during pre-and post-infection, incubation period, and vector competency are some of the factors affecting vectorial capacity that determine the effectiveness of vector-borne pathogens (Chuche et al, 2017).…”

Section: P R E S Smentioning

confidence: 99%

INSECT COMMUNITY ASSOCIATED WITH Ganoderma BASIDIOCARPS IN OIL PALM PLANTATIONS OF SABAH

SYARIF

2024

JOPR

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Ganoderma Basal Stem Rot (BSR) is currently one of the most important diseases in oil palm. The disease transmission is predominantly through root-to-root contact in soil. However, the role of Ganoderma basidiospores remains ambiguous in the transmission process despite millions being produced during active phase of fungus. Five plantations in Sabah with varying incidences of Ganoderma BSR (6.0% -9.8%) were selected for the study. A total of 543 basidiocarps were collected and assessed. At least 55 arthropods were associated with Ganoderma basidiocarps. Among these arthropods, 8 species were found carrying the basidiospores internally or externally. Handsome fungus beetles, Eumorphus spp. were found to be strongly associated as vector of Ganoderma disease, but this requires further investigation.This study could potentially provide an insight on the sporadic spread of BSR which was not conceivable via root-to-root contact.

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Section: P R E S Smentioning

confidence: 99%

INSECT COMMUNITY ASSOCIATED WITH Ganoderma BASIDIOCARPS IN OIL PALM PLANTATIONS OF SABAH

SYARIF

2024

JOPR

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“…Dalbulus maidis can cause up to 98% yield loss in maize by direct feeding on phloem sap and pathogen transmission (Nault & Bradfute, 1979;Pérez-López et al, 2018;Summers et al, 2004;Tsai, 2008). At least seven vector-borne diseases are known in maize, five of which are viral and two bacterial (Carloni et al, 2013;Hammond & Bedendo, 2005;Liu & Wang, 2018;Meyer & Pataky, 2010;Orlovskis et al, 2017;Zhang et al, 2011). Dalbulus maidis is the insect vector responsible for transmitting three of the most important maize disease agents, namely Maize rayado fino virus (MRFV), Maize bushy stunt phytoplasma, and Spiroplasma kunkelii (CSS), which it can acquire and transmit together or individually (Galvão et al, 2020;Mlotshwa et al, 2020;Sabato et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Assessing the Functionality of RNA Interference (RNAi) in the Phloem-feeding Maize pestDalbulus maidis

Medina

2021

Preprint

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Dalbulus maidis [(DeLong & Wolcott), corn leafhopper], a phloem-feeding insect, is the most efficient vector of maize stunting pathogens (Spiroplasma kunkelii, Maize bushy stunt phytoplasma, and Maize rayado fino virus) in the Americas. Studies involving gene editing in insects are rapidly providing information that can potentially be used for insect vector and plant disease control. RNA interference (RNAi), a sequence-specific gene silencing method, is one of the most widely used molecular tools in functional genomics studies. RNAi uses exogenous double-stranded RNA (dsRNA) or small interfering RNA (siRNA) to prevent the production of proteins by inhibiting the expression of their corresponding messenger RNA (mRNA). In this study, we measured the efficacy of gene silencing, and its effects on D. maidis mortality as proof of concept that RNAi is a viable tool for use in genetic pest control of phloem-feeding insects. Oral delivery of dsRNA using an artificial diet was used to silence two key insect genes, vacuolar ATP synthase subunit B, and subunit D (V-ATPase B and V-ATPase D). Our results showed reduced gene expression of V-ATPase B and V-ATPase D after ingestion of dsRNA, and significantly higher mortality, and wing deformation, associated with reduced gene expression, compared to control insects that were not orally fed dsRNA. These results reveal RNAi as a viable tool for use in genetic pest control of phloem-feeding insects, and a way for further functional genomic studies, such as identification of potential target genes for either population suppression or population replacement of this vector of maize diseases.

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“…More than 700 distinct plant diseases identified as vector-borne pose a significant threat to plant health and food security within agricultural systems all over the world [ 1 , 2 , 3 , 4 ]. The study of interactions between insect vectors, phytopathogens, and their shared plant hosts is fundamental for the elucidation of clues necessary for developing novel and sustainable control strategies to mitigate losses caused by vector-borne plant diseases.…”

Section: Introductionmentioning

confidence: 99%

Corn Stunt Disease: An Ideal Insect–Microbial–Plant Pathosystem for Comprehensive Studies of Vector-Borne Plant Diseases of Corn

Jones

Medina

2020

Plants

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Over 700 plant diseases identified as vector-borne negatively impact plant health and food security globally. The pest control of vector-borne diseases in agricultural settings is in urgent need of more effective tools. Ongoing research in genetics, molecular biology, physiology, and vector behavior has begun to unravel new insights into the transmission of phytopathogens by their insect vectors. However, the intricate mechanisms involved in phytopathogen transmission for certain pathosystems warrant further investigation. In this review, we propose the corn stunt pathosystem (Zea mays–Spiroplasma kunkelii–Dalbulus maidis) as an ideal model for dissecting the molecular determinants and mechanisms underpinning the persistent transmission of a mollicute by its specialist insect vector to an economically important monocotyledonous crop. Corn stunt is the most important disease of corn in the Americas and the Caribbean, where it causes the severe stunting of corn plants and can result in up to 100% yield loss. A comprehensive study of the corn stunt disease system will pave the way for the discovery of novel molecular targets for genetic pest control targeting either the insect vector or the phytopathogen.

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Molecular confirmation of Maize rayado fino virus as the Brazilian corn streak virus

Cited by 12 publications

References 15 publications

INSECT COMMUNITY ASSOCIATED WITH Ganoderma BASIDIOCARPS IN OIL PALM PLANTATIONS OF SABAH

INSECT COMMUNITY ASSOCIATED WITH Ganoderma BASIDIOCARPS IN OIL PALM PLANTATIONS OF SABAH

Assessing the Functionality of RNA Interference (RNAi) in the Phloem-feeding Maize pestDalbulus maidis

Corn Stunt Disease: An Ideal Insect–Microbial–Plant Pathosystem for Comprehensive Studies of Vector-Borne Plant Diseases of Corn

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