Occurrences of Soybean Viruses, Fungal Diseases, and Pests in Illinois Soybean Rust Sentinel Plots

Hobbs, H. A.; Herman, Theresa K.; Slaminko, T. L.; Wang, Yi; Nguyen, Binh T.; McCoppin, Nancy K.; Domier, Leslie L.; Hartman, G. L.

doi:10.1094/php-2010-0827-01-br

Cited by 17 publications

(13 citation statements)

References 3 publications

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“…In 2008 and 2009, soybean leaf samples were collected without regard to disease symptoms at growth stages R5 to R7 (Fehr et al, 1971) from commercial soybean fields in 36 and 9 counties respectively, in Illinois, USA (Hobbs et al, 2010). Leaf samples (over 3,000 in total) were combined into groups of about 90 leaves, total RNA was extracted using the Qiagen (Valencia, CA) RNeasy Plant Mini Kit for 150 mg of leaf tissue from each pool.…”

Section: Plant Materials and Total Rnamentioning

confidence: 99%

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Novel mycoviruses discovered from metatranscriptomics survey of soybean phyllosphere phytobiomes

2016

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Mycoviruses can be beneficial to plants in that they can debilitate pathogenic fungi thereby reducing the severity of associated plant diseases. Studies to date have focused primarily on culturable fungi that represent a fraction of natural fungal populations. The nonculturable fungi, however, can harbor diverse populations of mycoviruses that reduce plant disease or enhance resistance to abiotic stress. Metatranscriptome analysis of field-grown plant samples using high-throughput sequencing offers the possibility of unbiased detection and quantification of mycoviruses regardless of the culturability of their fungal hosts together with the complete associated microbial consortia. In this study, we describe the fungal viromes of the phyllosphere of production soybean fields in Illinois, USA by analyzing the metatranscriptomes of thousands of soybean leaf samples collected during the 2008 and 2009 growing seasons. The analyses identified 25 partial genome sequences that represented at least 22 mycovirus genomes, only one of which had been described previously. The novel mycovirus genomes showed similarity to 10 distinct lineages including the genera Alphapartitivirus, Botybirnavirus, Endornavirus, Mitovirus, Mycoflexivirus, Ourmiavirus, Totivirus, Victorivirus, family Tombusviridae, order Mononegavirales, and the recently proposed genus Gemycircularvirus. The present study adds to the wealth of mycoviruses associated with plant phytobiomes and establishes groundwork needed for further characterization of the viruses.

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Section: Plant Materials and Total Rnamentioning

confidence: 99%

“…Leaf samples (over 3,000 in total) were combined into groups of about 90 leaves, total RNA was extracted using the Qiagen (Valencia, CA) RNeasy Plant Mini Kit for 150 mg of leaf tissue from each pool. RNA samples were treated with DNase I and evaluated for integrity by agarose gel electrophoresis (Hobbs et al, 2010).…”

Section: Plant Materials and Total Rnamentioning

confidence: 99%

Novel mycoviruses discovered from metatranscriptomics survey of soybean phyllosphere phytobiomes

2016

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“…Although SbDV has the ability to be a devastating disease and an aphid vector that colonizes soybean is now present in the United States, we have not seen evidence of a marked increase in SbDV incidence in soybean production fields (14,38).…”

Section: Discussionmentioning

confidence: 59%

Acquisition and Transmissibility of U.S. Soybean dwarf virus Isolates by the Soybean Aphid, Aphis glycines

Damsteegt¹,

Stone²,

Kuhlmann³

et al. 2011

Plant Disease

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Damsteegt, V. D., Stone, A. L., Kublmann, M., Gildow, F E., Domier, L. L., Sherman, D. J., Tian, B., and Schneider, W. L. 2011. Acquisition and transmissibility of U.S. Soybean dwarf virus isolates by tbe soybean aphid. Aphis glycines. Plant Dis. 95:945-950.Soybean dwarf virus (SbDV) exists as several distinct strains based on symptomatology, vector specificity, and host range. Originally characterized Japanese isolates of SbDV were specifically transmitted by Aulacorthum solani. More recently, additional Japanese isolates and endemic U.S. isolates bave been shown to be transmitted by several different apbid species. The soybean aphid. Aphis glycines, tbe only aphid that colonizes soybean, has been shown to be a very inefficient vector of some SbDV isolates from Japan and the United States. Transmission experiments have shown that tbe soybean apbid can transmit certain isolates of SbDV from soybean to soybean and clover species and from clover to clover and soybean witb long acquisition and inoculation access periods. Although transmission of SbDV by tbe soybean apbid is very inefficient, tbe large soybean apbid populations that develop on soybean may have epidemiological potential to produce serious SbDV-induced yield losses.Soybean dwarf virus (SbDV) is the causal agent of an economically important disease of soybean (Glycine max (L.) Merr.) in Japan (34-37) and a minor disease of other crops elsewhere (21). The causal virus has been transmitted to more than 50 species of forage legumes, pulse crops, and other broadleaf plants representing three families (1,5,6,18,21).As a member of the Luteoviridae, SbDV is transmitted only by apbids in a circulative, persistent manner. It is pbloem-limited and occurs in low concentration in plants (32). Tbe virus consists of several distinct strains based on symptomatology in soybeans, specificity of transmission by apbid species, physiochemical properties, and nucleotide sequence (5,27-30,37). The originally described Japanese soybean strains (SbDV-DS and SbDV-YS), hereinafter called SbDV-D and SbDV-Y, and a subterranean clover red-leaf virus (SCRLV, now synonymous with SbDV) described in Australia (20) were transmitted almost exclusively by Aulacorthum solani Kaltenbacb. An isolate serologically related to SCRLV found in California (19), and other related isolates found worldwide, were transmitted by Acyrthosiphon pisum (Harris) and other aphid species (7,11,16,22,23), and not by A. solani. More recently, dwarfing and yellowing strains of SbDV (SbDV-DP and SbDV-YP) have been described from Japan tbat were transmitted by Acyrthosiphon pisum (37). Except for one report (15), all earlier attempts to transmit strains of SbDV by tbe soybean aphid Aphis glycines Matsumora have been unsuccessful (11,32,41). The soybean apbid has been reported to transmit several plant vinises (4,11) including tbe Indonesian Soybean dwarf virus (17). Tbe Indonesian SbDV was shown to be serologically distinct from Japanese SbDV isolates, and no further reports about this virus could be found.Corresp...

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“…In 1993, the aforementioned diseases were reported as the most frequently occurring foliar diseases in an evaluation period of 13 yr from disease‐monitoring plots in Illinois (Eathington et al, 1993). In a more recent report (Hobbs et al, 2010), the most common foliar diseases in Illinois were brown spot, reported in 100 and 96% of the survey samples in 2006 and 2007, respectively, followed by Cercospora leaf blight (89%, 2007), downy mildew (96 and 67% in 2006 and 2007, respectively), and frog‐eye leaf spot (60 and 78% in 2006 and 2007, respectively). Bacterial pustule was less common and was found in only 4% of the samples in 2007.…”

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Evaluation of Disease and Pest Damage on Soybean Cultivars Released from 1923 through 2008 under Field Conditions in Central Illinois

et al. 2015

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Diseases and pests of soybean [Glycine max (L.) Merr.] often reduce soybean yields. Targeted breeding that incorporates known genes for resistance and non‐targeted breeding that eliminates susceptible plants in breeding populations reduces the impact of soybean pathogens and pests. Maturity group (MG) III soybean cultivars released from 1923 through 2008 were grown in three field environments to determine if disease and insect ratings were associated with year of cultivar release. Disease and pest ratings were evaluated on 40 soybean cultivars at one location (Urbana, IL) planted in two rotation treatments in 2010 and on 59 cultivars in two locations (Urbana and Arthur) in 2011. During the season, foliar disease symptoms and insect foliar feeding damage were recorded. At harvest maturity, stem diseases were assessed. In at least one environment, foliar incidence reached 100% for bacterial diseases, brown spot (Septoria glycines Hemmi), and insect foliar feeding damage and 100% incidence for anthracnose [Colletotrichum truncatum (Schwein.) Andrus & W.D. Moore], Cercospora stem blight (Cercospora kikuchii T. Matsumoto & Tomoy.), and charcoal rot [Macrophomina phaseolina (Tassi) Goid.] on stems for all cultivars. For the nine different disease and pest severity assessments in 2010, seven had a significant (P < 0.05) negative correlation to year of cultivar release indicating that cultivars more recently released had lower severity ratings than cultivars with older release dates. This study demonstrated that incidence and severity of diseases were less pronounced on more newly‐released soybean cultivars, showing that decades of breeding has resulted in increased disease resistance in modern soybean cultivars.

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Occurrences of Soybean Viruses, Fungal Diseases, and Pests in Illinois Soybean Rust Sentinel Plots

Cited by 17 publications

References 3 publications

Novel mycoviruses discovered from metatranscriptomics survey of soybean phyllosphere phytobiomes

Novel mycoviruses discovered from metatranscriptomics survey of soybean phyllosphere phytobiomes

Acquisition and Transmissibility of U.S. Soybean dwarf virus Isolates by the Soybean Aphid, Aphis glycines

Evaluation of Disease and Pest Damage on Soybean Cultivars Released from 1923 through 2008 under Field Conditions in Central Illinois

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