Identification of Novel Sources of Host Plant Resistance to Known Soybean Aphid Biotypes

Bansal, Raman; Mian, M. A. Rouf; Michel, Andy

doi:10.1603/ec12453

Cited by 20 publications

(19 citation statements)

References 33 publications

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“…2). Furthermore, it was reported that PI 200538 (Rag2) expressed resistance to aphid biotype 3 at 21 and 28°C (Richardson, 2012), which directly contradicts the fact that the aphid biotype 3 was virulent on PI 200538 and has been maintained on other soybean genotypes with Rag2 as susceptible checks at temperatures within 21 to 28°C in several studies (Alt and Ryan-Mahmutagic, 2013;Bansal et al, 2013;Fox et al, 2014;Hill et al, 2010;Kim et al, 2014). Richardson also reported that the antixenosis-type resistance against aphid biotypes 1 and 3 in PI 567597C was reduced at 28°C, which was not found in this study (Fig.…”

Section: No-choice Experimentsmentioning

confidence: 99%

Stability of Soybean Aphid Resistance in Soybean Across Different Temperatures

2014

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The soybean aphid (Aphis glycines Matsumura) is the most important insect pest posing a threat to soybean [Glycine max (L.) Merr.] grain production in the United States. Soybean cultivars with resistance are currently being deployed to aid in management of the pest. Temperature has been reported to influence the expression of host plant resistance against crop pests. The objective of this study was to determine if temperatures, 14, 21, and 28°C, altered resistance expression in four aphid‐resistant soybean genotypes, LD05‐16611 (with the Rag1 resistance gene), PI 200538 (Rag2), PI 567541B (rag1c, rag4), and PI 567597C (antixenosis) compared to a susceptible soybean genotype (Williams 82) when challenged with soybean aphid. A replicated no‐choice experiment was conducted and aphid populations of the three soybean aphid biotypes, 1, 2, and 3, were enumerated 14 d after inoculating the five soybean genotypes. Significant interactions were found in the analysis of the effects of temperature, soybean genotype, and aphid biotype on aphid populations. Responses between soybean genotypes and aphid biotypes were consistent with previous reports with the exception of PI 567541B, which had lower resistance against aphid biotype 1 than found in an earlier study. At 14°C, there was limited aphid population growth on all soybean genotypes, including Williams 82. At 21 and 28°C, resistance expression was stable in LD05‐16611 (Rag1), PI 567541B (rag1c, rag4), and PI 567597C (antixenosis), relative to susceptible Williams 82; however, resistance expressed in PI 200538 (Rag2) was significantly stronger at 28°C than at 21°C, as indicated by differences in aphid population size that were found. Results of this study indicated that soybean aphid virulence variability had a stronger influence on the effectiveness of soybean aphid resistance than did temperature, and that the aphid resistance tested in this study would remain stable or be stronger in temperatures ranging between 21 and 28°C.

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Section: No-choice Experimentsmentioning

confidence: 99%

Stability of Soybean Aphid Resistance in Soybean Across Different Temperatures

2014

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“…It is also important to consider this work in light of different soybean aphid biotypes . As the durability of Rag1 is reduced by virulent aphid biotypes, growers will continue to look for sources of host-plant resistance that can reduce damage by soybean aphid populations, and research is already being undertaken to identify new aphid-resistant soybean varieties (Bansal et al 2013). Future research should assess effects on nontarget insects for these novel forms of host-plant resistance.…”

Section: Discussionmentioning

confidence: 99%

Effects of <I>Rag1</I> on the Preference and Performance of Soybean Defoliators

2013

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The Rag1 gene confers antibiotic resistance to soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), and in 2010, varieties expressing Rag1 were released for commercial use in the United States. We do not know how Rag1 varieties will influence the broader community of defoliating insects that inhabit soybean fields. In 2010 and 2011, the preference and performance of pest insects that defoliate soybeans [Glycines max (L.) Merr] were tested using Rag1 and aphidsusceptible varieties. Three coleopterans and four lepidopterans were used: northern corn rootworm, Diabrotica barberi Smith & Lawrence (Coleoptera: Chrysomelidae); southern corn rootworm, Diabrotica undecimpunctata howardi Barber (Coleoptera: Chrysomelidae); bean leaf beetle, Ceratoma trifurcata Förster (Coleoptera: Chrysomelidae); fall armyworm, Spodoptera frugiperda ( J. E. Smith) (Lepidoptera: Noctuidae); corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae); soybean looper, Chrysodeix includens (Walker) (Lepidoptera: Noctuidae); and velvetbean caterpillar,Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae). The preference of insects was evaluated in choice and no-choice tests using Rag1 and susceptible soybeans. Lepidopterans also were evaluated on Rag1 leaves using four nutritional indices: relative growth rate, approximate digestibility, and efficiency of conversion of ingested material. In the majority of preference tests, no effect of Rag1 was detected, and in cases where preferences were found, there was no consistent pattern of preference for Rag1 vs. susceptible leaf tissue. Helicoverpa zea demonstrated a preference for resistant leaf tissue, but this was dependent on the genetic background of the variety. Evaluations of nutritional indices indicated that three species of Lepidoptera, S. frugiperda, H. zea, and A. gemmatalis, displayed reduced conversion efficiency for Rag1 soybeans, suggesting effects of antibiosis. RightsThis article is the copyright property of the Entomological Society of America and may not be used for any commercial or other private purpose without specific permission of the Entomological Society of America.This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/ent_pubs/178BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Effects of Rag1 on the Preference and Performance of Soybean DefoliatorsAuthor (s) ABSTRACT The Rag1 gene confers antibiotic resistance to soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), and in 2010, varieties expressing Rag1 were released for commercial use in the United States. We do not know how Rag1 varieties will inßuence the broader community of defoliating insects that inhabit soybean Þelds. In 2010 and 2011, the preference and performance of pest insects that defoliate soybeans [Glycines max (L.) Merr] were t...

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“…Another form of single-gene resistance to A. glycines was found in PI2243540, which became known as Rag2 (Mian et al 2008a). The genes are labeled from Rag1 to Rag5 with three receiving provisional designations (Rag1, rag1b (provisional), rag1c, Rag2, Rag3, rag3 (provisional), rag4, and Rag5 (provisional) (Bansal et al 2013).…”

Section: Rag Genesmentioning

confidence: 99%

Impact of soybean trichomes on Aphis glycines (Hemiptera: Aphididae) and their interaction with natural enemy abundance and predation

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Identification of Novel Sources of Host Plant Resistance to Known Soybean Aphid Biotypes

Cited by 20 publications

References 33 publications

Stability of Soybean Aphid Resistance in Soybean Across Different Temperatures

Stability of Soybean Aphid Resistance in Soybean Across Different Temperatures

Effects of <I>Rag1</I> on the Preference and Performance of Soybean Defoliators

Impact of soybean trichomes on Aphis glycines (Hemiptera: Aphididae) and their interaction with natural enemy abundance and predation

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