Effect of L‐3,4‐dihydroxyphenylalanine, ornithine and γγ‐aminobutyric acid on winter wheat resistance to grain aphid

Ciepiela, A P; Sempruch, C.

doi:10.1046/j.1439-0418.1999.00356.x

Cited by 27 publications

(19 citation statements)

References 21 publications

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“…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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Section: Introductionmentioning

confidence: 99%

Detoxification of Gramine by the Cereal Aphid Sitobion avenae

et al. 2009

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“…Some studies using different tissues of cotton plant and diets-containing secondary compounds (Wang, 1997;Wang et al, 1997a) indicate that gossypol and tannic acid in cotton determine the relative growth rate and efficiency of conversion of ingested food by Helicoverpa armigera (Hbn). In wheat secondary substances, such as phenolics, indole alkaloids and non-protein amino acids, are important in the resistance to insects (Ciepiela & Sempruch, 1999). Wheat with high resistance to aphids contains high levels of total phenolics and tannin (Chen et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Effect of the secondary substances from wheat on the growth and digestive physiology of cotton bollworm Helicoverpa armigera (Lepidoptera: Noctuidae)

Wang¹,

Cai²,

Zhang³

et al. 2006

Eur. J. Entomol.

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Abstract. Three secondary compounds, pyrocatechol, gramine and ferulic acid from wheat were separately incorporated into artificial diets and fed to cotton bollworm Helicoverpa armigera (Hübner) larvae to determine their effects on larval and pupal weights and the nutritional indices of the larvae. The results show that these three secondary compounds can decrease the mean larval and pupal weights of cotton bollworm, with the mean larvae weights differing significantly between treatments. Mean pupal weight was only significantly reduced by ferulic acid and gramine, but not pyrocatechol. There were significant correlations between mean larval weight and concentration of the three secondary compounds tested, and between mean pupal weight and concentration of ferulic acid and gramine. The three secondary compounds tested affected the nutritional indices of cotton bollworm larvae differently. Compared with the control, ferulic acid and gramine significantly decreased RGR (the relative growth rate), AD (approximate digestibility) and ECD (conversion efficiency) of cotton bollworm larvae, and pyrocatechol only reduced ECD. All three indices were the lowest for cotton bollworm larvae fed on the diet with gramine (0.0984 ± 0.0114 g/g/day, 14.2670 ± 1.1541% and 31.1337 ± 1.1213%).

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“…This may suggest specific ODC participation in particular aphidehost interactions, with strong dependence on the plant as well as the insect species. The significance of the enzyme may be associated with biodegradation of ornithine, since its high content has been negatively correlated with the growth and development of S. avenae on wheat (Ciepiela and Sempruch, 1999). ODC is also involved in putrescine biosynthesis.…”

Section: Discussionmentioning

confidence: 99%