Seasonal Dynamics of Cereal Aphids on Russian Wheat Aphid (Homoptera: Aphididae) Susceptible and Resistant Wheats

Schotzko, D. J.; Bosque‐Pérez, Nilsa A.

doi:10.1603/0022-0493-93.3.975

Cited by 36 publications

(26 citation statements)

References 17 publications

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“…Neither of the two D. noxia-resistant wheat accessions (Turtsikum and Strelinskaja Mestnaja) limited R. padi populations relative to control accessions. Similarly, Schotzko & Bosque-Pérez (2000) found no difference in field-population levels of R. padi between Centennial wheat and an advanced wheat line derived from the cross: Centennial/Strelinskaja Mestnaja.…”

Section: Discussionmentioning

confidence: 90%

“…It is not known whether the same or different gene(s) are responsible for resistance to R. padi and D. noxia in N1185, N1186, Okto Derzhavina, and Stniism 3. Use of accessions with resistance to both R. padi and D. noxia would seem advantageous, as these aphids can co-occur at relatively high levels in several regions (Hammon et al, 1996;Schotzko & Bosque-Pérez, 2000). The strong levels of resistance in triticale accessions we tested warrant further research to determine the genetic basis of their resistance to R. padi and to clarify their potential use in breeding programs for cereal-aphid resistance.…”

Section: Discussionmentioning

confidence: 99%

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Antibiosis and antixenosis to Rhopalosiphum padi among triticale accessions

Hesler

Tharp

2005

Euphytica

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Tests for antibiosis and antixenosis resistance to Rhopalosiphum padi L., the bird cherry-oat aphid, were conducted among four wheat (Triticum aestivum L.) and eight triticale (XTriticosecale Wittmack) accessions. Tests for antibiosis included measuring R. padi-population growth over 13 days, number of days to reproduction of individual R. padi, and number of aphid progeny produced in the first 7 days of adulthood. Antixenosis was measured in no-choice nymphiposition tests and in choice tests of host selection by winged R. padi. Three of seven triticale accessions limited R. padi populations relative to control accessions. Lower R. padi-population growth on N1185 and Okto Derzhavina could be explained partially by increased developmental times. Lower R. padi-population growth on triticale accessions N1185, N1186 and Okto Derzhavina could be explained at least partially by fewer aphid progeny on these accessions. Developmental time of R. padi on N1185 and Okto Derzhavina was greater than that on Stniism 3 triticale, identified previously as resistant to R. padi. There were less R. padi progeny on N1185 than on Stniism 3, and comparable numbers of R. padi progeny among N1186, Okto Derzhavina, and Stniism 3. None of the accessions limited nymphiposition by R. padi. Choice tests revealed heterogeneity in host selection by R. padi but an overall trend that triticale accessions Okto Derzhavina, N1185, N1186 and Stniism 3 were less preferred hosts than Arapahoe wheat. Relatively strong resistance in these triticale accessions warrant consideration of their future use in breeding programs for cereal-aphid resistance.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Antibiosis and antixenosis to Rhopalosiphum padi among triticale accessions

Hesler

Tharp

2005

Euphytica

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“…Host plant resistance against insects is recognized as an important component of integrated insect pest management (Gao 1994;Schotzko and Bosque-pérez 2000;Li et al 2001). Plant resistance is attributed largely to secondary metabolites such as phenolics, nonprotein amino acids, and alkaloids, which are documented to be deleterious to insect herbivores (Manuwoto and Scriber 1985;Ciepiela and Sempruch 1999;Wang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Detoxification of Gramine by the Cereal Aphid Sitobion avenae

et al. 2009

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Secondary metabolites play an important role in host plant resistance to insects, and insects, in turn, may develop mechanisms to counter plant resistance mechanisms. In this study, we investigated the toxicity of gramine to the cereal aphid Sitobion avenae and some enzymatic responses of S. avenae to this alkaloid. When S. avenae fed on an artificial diet containing gramine, mortality occurred in a dose-dependent manner. The LC 50 of gramine was determined to be 1.248 mM. In response to gramine, S. avenae developed increased activities of carboxylesterase and glutathione S-transferase, two important detoxification enzymes. The activities of both enzymes were positively correlated with the concentration of dietary gramine. In addition, the activities of peroxidase and polypheolic oxidase, two important oxidoreductase enzymes in S. avenae, increased in response to gramine; however, catalase activity decreased when insects were exposed to higher levels of dietary gramine. The potential role of gramine in host plant resistance and S. avenae counter-resistance is discussed.

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“…These are the greenbug, Schizaphis graminum, the Russian wheat aphid, Diuraphis noxia, and the bird cherry-oat aphid, Rhopalosiphum padi (Homoptera: Aphididae) (Turney & Hoelscher, 1986; Schotzko & Bosque-Perez, 2000; Bosque-Pérez et al ., 2002). It has been shown that S.…”

Section: Introductionmentioning

confidence: 99%

Interactions among three species of cereal aphids simultaneously infesting wheat

Qureshi¹,

Michaud²

2005

Journal of Insect Science

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Interactions among greenbug, Schizaphis graminum (Rondani), Russian wheat aphid, Diuraphis noxia (Mordvilko), and bird cherry-oat aphid Rhopalosiphum padi (L.) were examined on wheat plants (Triticum aestivum L., cultivar TAM 107). Nymphs were released on the plants as conspecific and heterospecific pairs of either first or fourth instars and evaluated for survival, developmental time, fecundity, intra-plant movement, and affinity to plant tissues. Survival from first instar to onset of reproduction averaged 90–100% across all pair combinations. Diuraphis noxia developed faster as conspecifics than in any heterospecific combination, and faster as conspecifics feeding on the same plant tissue than on different tissues. Fecundity of S. graminum was higher for conspecifics that developed on the same plant tissue than for those feeding separately. There was evidence of amensalism (one species was harmed while the other was unaffected) in that D. noxia experienced delayed development feeding in tandem with S. graminum, and reduced fecundity with both S. graminum and R. padi. Furthermore, S. graminum nymphs had reduced survival when their mothers matured on a same plant with R. padi. Both D. noxia and R. padi changed position on the plant more often when developing with S. graminum. Survival of second generation S. graminum nymphs was reduced when this species developed and reproduced in tandem with R. padi. Preferred feeding locations were S. graminum - primary leaf, D. noxia - tertiary leaf and R. padi - stem and these were not altered in any heterospecific combinations. Heterospecific aphids had no impact on fecundity or progeny survival in any species combination when fourth instars matured and reproduced on plants not previously exposed to aphid feeding, supporting the inference that systemic, aphid-induced changes in plant physiology mediated the effects observed when first instars developed and reproduced on the same plants.

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Seasonal Dynamics of Cereal Aphids on Russian Wheat Aphid (Homoptera: Aphididae) Susceptible and Resistant Wheats

Cited by 36 publications

References 17 publications

Antibiosis and antixenosis to Rhopalosiphum padi among triticale accessions

Antibiosis and antixenosis to Rhopalosiphum padi among triticale accessions

Detoxification of Gramine by the Cereal Aphid Sitobion avenae

Interactions among three species of cereal aphids simultaneously infesting wheat

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