Tagosodes orizicolus: nuevo vector potencial del Mal de Río Cuarto virus

Mattio, María Fernanda; Cassol, Agustina; Lenicov, Ana María Marino de Remes; Truol, G.

doi:10.1590/s1982-56762008000300010

Cited by 7 publications

(5 citation statements)

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“…Besides maize, MRCV infects several monocotyledonous crops such as wheat ( Triticum aestivum ), oat ( Avena sativa ), rye ( Secale cereale ) and diverse species of weeds that act as winter reservoirs [ 4 , 5 ]. The virus is transmitted by a number of species of delphacid planthoppers in a persistent propagative manner [ 6 – 9 ]. Viral replication is phloem-limited and causes severe symptoms in plants, whereas replication in planthoppers is asymptomatic [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Mal de Río Cuarto virus infection causes hormone imbalance and sugar accumulation in wheat leaves

et al. 2019

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BackgroundMal de Río Cuarto virus (MRCV) infects several monocotyledonous species including maize and wheat. Infected plants show shortened internodes, partial sterility, increased tillering and reduced root length. To better understand the molecular basis of the plant-virus interactions leading to these symptoms, we combined RNA sequencing with metabolite and hormone measurements.ResultsMore than 3000 differentially accumulated transcripts (DATs) were detected in MRCV-infected wheat plants at 21 days post inoculation compared to mock-inoculated plants. Infected plants exhibited decreased levels of TaSWEET13 transcripts, which are involved in sucrose phloem loading. Soluble sugars, starch, trehalose 6-phosphate (Tre6P), and organic and amino acids were all higher in MRCV-infected plants. In addition, several transcripts related to plant hormone metabolism, transport and signalling were increased upon MRCV infection. Transcripts coding for GA20ox, D14, MAX2 and SMAX1-like proteins involved in gibberellin biosynthesis and strigolactone signalling, were reduced. Transcripts involved in jasmonic acid, ethylene and brassinosteroid biosynthesis, perception and signalling and in auxin transport were also altered. Hormone measurements showed that jasmonic acid, brassinosteroids, abscisic acid and indole-3-acetic acid were significantly higher in infected leaves.ConclusionsOur results indicate that MRCV causes a profound hormonal imbalance that, together with alterations in sugar partitioning, could account for the symptoms observed in MRCV-infected plants.Electronic supplementary materialThe online version of this article (10.1186/s12870-019-1709-y) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Mal de Río Cuarto virus infection causes hormone imbalance and sugar accumulation in wheat leaves

et al. 2019

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“…FDV is transmitted by Perkinsiella saccharicida Kirkaldy, Perkinsiella vituensis, and Perkinsiella vastatrix (Toohey and Nielsen, 1972;Mungomery and Bell, 1933;Hughes et al, 2008). Both MRDV Mungomery and Bell, 1933;Toohey and Nielsen, 1972;Chang, 1977;Egan and Ryan, 1986;Hughes et al, 2008 Subgroup 2 Lenicov et al, 1985;Velázquez et al, 2003Velázquez et al, , 2006Velázquez et al, , 2017Mattio et al, 2008 Maize rough dwarf virus (Achon et al, 2013;Nault, 1994). Two other planthoppers Unkanodes sapporona Matsumura and Unkanodes albifascia are not of great importance for RBSDV epidemic because of their low density in the field, though they also transmit RBSDV (Wu et al, 2020).…”

Section: Vector Insectsmentioning

confidence: 99%

“…Different planthopper species in Argentina can transmit MRCV, but Delphacodes kuscheli Fennah is the most plentiful and recurring species in areas where the virus is endemic (Remes Lenicov et al, 1985). Many other planthopper species, including Chionomus haywardi Muir, Peregrinus maidis Ashmead, Toya propinqua Fieber, Caenodelphax teapae Fowler, Pyrophagus tigrinus Remes Lenicov and Tagosodes orizicolus Muir are also known to transmit MRCV (Velázquez et al, 2003(Velázquez et al, , 2006(Velázquez et al, , 2017Mattio et al, 2008). MRCV epidemics are largely related to the abundance, frequency and transmission efficiency of the vectors in early stages of the maize crop (Ornaghi et al, 1999;Laguna et al, 2002;Velázquez et al, 2003).…”

Section: Vector Insectsmentioning

confidence: 99%

Insights Into Insect Vector Transmission and Epidemiology of Plant-Infecting Fijiviruses

Zhang

Ren

et al. 2021

Front. Microbiol.

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Viruses in genus Fijivirus (family Reoviridae) have caused serious damage to rice, maize and sugarcane in American, Asian, European and Oceanian countries, where seven plant-infecting and two insect-specific viruses have been reported. Because the planthopper vectors are the only means of virus spread in nature, their migration and efficient transmission of these viruses among different crops or gramineous weeds in a persistent propagative manner are obligatory for virus epidemics. Understanding the mechanisms of virus transmission by these insect vectors is thus key for managing the spread of virus. This review describes current understandings of main fijiviruses and their insect vectors, transmission characteristics, effects of viruses on the behavior and physiology of vector insects, molecular transmission mechanisms. The relationships among transmission, virus epidemics and management are also discussed. To better understand fijivirus-plant disease system, research needs to focus on the complex interactions among the virus, insect vector, insect microbes, and plants.

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“…The main vector, Delphacodes kuscheli Fennah, is the most abundant and frequent vector species in the endemic area of the disease (Laguna et al , 2002). Nonetheless, there are other species that can transmit MRCV: Chionomus haywardi (Muir) (Velázquez et al , 2003), Peregrinus maidis (Ashmead) (Virla et al , 2004), Toya propinqua (Fieber) (Mattio et al , 2005), Caenodelphax teapae Fowler (Velázquez et al , 2005), Pyrophagus tigrinus Remes Lenicov and Varela (Velázquez et al , 2006) and Tagosodes orizicolus (Muir) (Mattio et al , 2008). These species contribute distinctively in the epidemiology of MRCV because they vary in their distribution, frequency and transmission efficiency (Remes Lenicov & Virla, 1999; Laguna et al , 2002).…”

Section: Introductionmentioning

confidence: 99%

A molecular framework for the identification of planthopper vectors (Hemiptera: Delphacidae) of central Argentina

Argüello

Dumón

Mattio

et al. 2015

Bull. Entomol. Res.

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Planthoppers are important worldwide crop pests as well as vectors of numerous diseases. Different species transmit Mal de Río Cuarto virus, which causes the most economically important corn disease in central Argentina. Epidemiological studies rely on the accurate identification of the species present in the field. Presently, morphological identification of planthoppers requires taxonomic expertise and there are no taxonomic keys for females and nymphs. Nevertheless, no molecular protocols are available for accurate species identification of most frequent delphacid species from central Argentina. In this context, the aim of this study was to evaluate the utility of the cytochrome oxidase I gene (COI) as a DNA barcode and its digestion with restriction enzymes (Restriction Fragment Length Polymorphism, RFLP) for the identification of the most common species of planthoppers in central Argentina. We amplified and sequenced a 843 bp fragment of the COI gene of taxonomically identified specimens and evaluated its use as a DNA barcode. Restriction enzymes were also selected for digesting the COI fragment via RFLP. The high interspecific variability (20.79%; ± 2.32%) and low intraspecific divergence (0.12%; ± 0.17%) observed in the studied species, demonstrate the effectiveness of the COI gene for species identification of major vector delphacids affecting corn crops in Argentina. Moreover, the digestion of this COI gene fragment with Bfa I and Apo I enzymes allows a fast and cost-effective species identification method when numerous specimens need to be processed. Both molecular techniques developed here, allow the accurate identification of planthopper species at regional scale. These new tools would assist traditional identification of these insects, especially for aiding non-experts in morphological taxonomy.

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Tagosodes orizicolus: nuevo vector potencial del Mal de Río Cuarto virus

Cited by 7 publications

References 8 publications

Mal de Río Cuarto virus infection causes hormone imbalance and sugar accumulation in wheat leaves

Mal de Río Cuarto virus infection causes hormone imbalance and sugar accumulation in wheat leaves

Insights Into Insect Vector Transmission and Epidemiology of Plant-Infecting Fijiviruses

A molecular framework for the identification of planthopper vectors (Hemiptera: Delphacidae) of central Argentina

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