Microsatellite markers linked to six Russian wheat aphid resistance genes in wheat

Liu, X. M.; Smith, C. Michael; Gill, Bikram S.; Tolmay, V.

doi:10.1007/s001220051674

Cited by 128 publications

(150 citation statements)

References 31 publications

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“…7 Soon after discovery of D. noxia in the US in 1986, an expedited effort to develop aphidresistant wheat and barley cultivars began 8 and continues today. Ten Dn (Diuraphis noxia resistance) genes from wheat [9][10][11][12][13] and one gene from rye 14 governing resistance to D. noxia have been characterized. The wheat cultivar 'Halt' 15 with resistance based on the single dominant gene Dn4 was introduced for cultivation, followed by 'Prairie Red,' 'Yumar,' 'Prowers,' 'Prowers 99' 16 and 'Ankor' 17 all of which express Dn4.…”

Section: Introductionmentioning

confidence: 99%

Barley tolerance of Russian wheat aphid (Hemiptera: Aphididae) biotype 2 herbivory involves expression of defense response and developmental genes

Murugan

Smith

2012

Plant Signaling & Behavior

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The Russian wheat aphid, Diuraphis noxia (Kurdjumov), is an invasive insect pest that causes serious yield losses in bread wheat, Triticum aestivum L., durum wheat, T. turgidum L and barley, Hordeum vulgare L. Successful management of D. noxia has been achieved through resistant varieties via plant antixenosis (aphid non-preference), antibiosis (reduced aphid growth or fecundity), tolerance (plant compensatory growth after aphid feeding), or a combination of each. Previous phenotyping experiments revealed that plants of the variety Stoneham resist D. noxia damage via tolerance. In the present study, genes involved in upstream regulation of jasmonic acid (JA), salicylic acid (SA), ethylene (ET), auxin (AUX) and abscisic acid (ABA) biosynthetic pathways were monitored using qRT-PCR in Stoneham and susceptible Otis barley plants after D. noxia biotype 2 feeding. Results indicate that D. noxia tolerance in Stoneham plants is related to greater constitutive expression of JA-, ET-and AUX-biosynthetic pathway genes than in susceptible Otis plants, suggesting the possibility of immediate plant adjustments due to the stress of D. noxia feeding. There was limited induction of genes in the ET-(ACCS) and IAA (TDC) pathways in Stoneham tissues after D. noxia feeding. JA pathway genes upregulated in Otis tissues after D. noxia infestation failed to successfully defend Otis plants. AUX and ABA transcripts in Otis may be associated with developmental collapses resulting from source and sink adjustment failures.

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Section: Introductionmentioning

confidence: 99%

Barley tolerance of Russian wheat aphid (Hemiptera: Aphididae) biotype 2 herbivory involves expression of defense response and developmental genes

Murugan

Smith

2012

Plant Signaling & Behavior

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“…et al, 2003). With the exception of Dnx, all of the above were also reported to be present in P1294994, which therefore appears to be a highly heterogeneous resistance source (Saidi & Quick, 1996;Zhang, Quick & Liu, 1998;Liu et al, 2001, Liu et al, 2002. Genes in the 7DS proximal cluster ( Figure I) produced discrepant results in some genetic mapping and allelism studies.…”

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confidence: 99%

“…Genes in the 7DS proximal cluster ( Figure I) produced discrepant results in some genetic mapping and allelism studies. Dnl and Dn2 were found to segregate independently by du Toit (1989) and Marais & du Toit (1993) whereas Saidi & Quick (1996) and Liu et al (2001) concluded that they are either closely linked or alleles at a single locus. Dn6 segregated independently from Dnl and Dn2 (S,aidi & Quick, 1996).…”

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Effect of segregation distortion on genetic mapping of a PI 294994-derived Russian Wheat Aphid resistance gene

Marais

Boshoff²,

Toit³

2007

South African Journal of Plant and Soil

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“…ÔTregoÕ is a hard white winter wheat released by Kansas State University in 1999 that is highly susceptible to D. noxia (Jyoti et al 2006). ÔHaltÕ is a cultivar developed by Colorado State University and released in 1994 that was the Þrst commercial cultivar expressing the Dn4 gene for D. noxia resistance (Liu et al 2001). ÔStantonÕ was developed by Kansas State University and released in 2000 (Martin et al 2001).…”

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Positive Correlation of Fitness with Group Size in Two Biotypes of Russian Wheat Aphid (Homoptera: Aphididae)

Michaud

Jyoti

Qureshi

2006

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Changes in Þtness parameters as a function of colony size (one versus 10 aphids) were measured in two biotypes (RWA1 and RWA2) of the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Homoptera: Aphididae), feeding on three cultivars of wheat, Triticum aestivum L., at two temperatures. ÔTregoÕ is a cultivar with no speciÞc resistance to D. noxia, whereas, ÔStantonÕ and ÔHaltÕ express Dny and Dn4 resistance sources, respectively. Feeding in a group accelerated the development of RWA1 on Trego and Stanton at 20ЊC, but not at 24ЊC, whereas grouped RWA2 developed faster than solitary RWA2 on all three cultivars at 24ЊC, but not at 20ЊC. Survival (Þrst instarÐadult) of RWA2 also was improved by grouping on Stanton and Halt at 24ЊC, but solitary RWA2 survived better at 20ЊC on all three cultivars. The reproductive rate of RWA1 was improved by grouping on Trego and Stanton at both temperatures, but only on Halt at 24ЊC. Lifetime fecundity of RWA1 also was increased by grouping in all cases except for Trego at 20ЊC. Grouped development increased the reproductive rate of RWA2 on all three cultivars at 24ЊC, but had no effect at 20ЊC. Grouped RWA2 developed and reproduced faster than grouped RWA1 on all three cultivars at 24ЊC. Thus, the Þtness of D. noxia was positively correlated with group size during colony establishment, but the effects were sensitive to temperature, being more pronounced at 20ЊC for RWA1 and at 24ЊC for RWA2.

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Microsatellite markers linked to six Russian wheat aphid resistance genes in wheat

Cited by 128 publications

References 31 publications

Barley tolerance of Russian wheat aphid (Hemiptera: Aphididae) biotype 2 herbivory involves expression of defense response and developmental genes

Barley tolerance of Russian wheat aphid (Hemiptera: Aphididae) biotype 2 herbivory involves expression of defense response and developmental genes

Effect of segregation distortion on genetic mapping of a PI 294994-derived Russian Wheat Aphid resistance gene

Positive Correlation of Fitness with Group Size in Two Biotypes of Russian Wheat Aphid (Homoptera: Aphididae)

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