Influence of sulphur plant nutrition on oviposition and larval performance of the cabbage root fly

Marazzi, Cristina; Städler, Erich

doi:10.1111/j.1461-9555.2005.00272.x

Cited by 10 publications

(11 citation statements)

References 30 publications

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“…For example, sulphur is an important prerequisite for the production of glucosinolates in Brassica, and the amount of sulphur supplied can alter the oviposition and performance of insect herbivores (Marazzi & Stadler 2005). Four of the five glucosinolates identified were present in substantially higher concentrations in organically fertilized plants in both years, and the same effect was shown by the fifth compound (neoglucobrassicin) in 2007.…”

Section: Discussionmentioning

confidence: 97%

Varying responses of insect herbivores to altered plant chemistry under organic and conventional treatments

et al. 2009

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The hypothesis that plants supplied with organic fertilizers are better defended against insect herbivores than those supplied with synthetic fertilizers was tested over two field seasons. Organic and synthetic fertilizer treatments at two nitrogen concentrations were supplied to Brassica plants, and their effects on the abundance of herbivore species and plant chemistry were assessed. The organic treatments also differed in fertilizer type: a green manure was used for the low-nitrogen treatment, while the highnitrogen treatment contained green and animal manures. Two aphid species showed different responses to fertilizers: the Brassica specialist Brevicoryne brassicae was more abundant on organically fertilized plants, while the generalist Myzus persicae had higher populations on synthetically fertilized plants. The diamondback moth Plutella xylostella (a crucifer specialist) was more abundant on synthetically fertilized plants and preferred to oviposit on these plants. Glucosinolate concentrations were up to three times greater on plants grown in the organic treatments, while foliar nitrogen was maximized on plants under the higher of the synthetic fertilizer treatments. The varying response of herbivore species to these strong differences in plant chemistry demonstrates that hypotheses on defence in organically grown crops have over-simplified the response of phytophagous insects.

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Section: Discussionmentioning

confidence: 97%

Varying responses of insect herbivores to altered plant chemistry under organic and conventional treatments

et al. 2009

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“…In contrast, aphids caused very large increases in root minerals which may have contributed to the positive effects on wireworm mass. In particular, aphids caused extremely large increases in root S which is known to promote the performance of some root‐feeding insects (Marazzi & Städler 2005). When aphid‐driven increases in root mineral concentrations were compared with increases in wireworm mass, significant relations were not detected.…”

Section: Discussionmentioning

confidence: 99%

“…Scutareanu & Loxdale 2006) and sulphur (S) (e.g. Marazzi & Städler 2004, 2005). Compared to plant N, these minerals have received less attention in terms of the nutritional ecology of herbivorous insects but some studies have shown that they can have either positive or negative impacts on herbivores depending on concentrations and herbivore taxa (Awmack & Leather 2002).…”

Section: Introductionmentioning

confidence: 99%

Reappraising the role of plant nutrients as mediators of interactions between root‐ and foliar‐feeding insects

Johnson¹,

Hawes²,

Karley³

2009

Functional Ecology

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Summary 1.There is increasing evidence that many above-ground and below-ground processes are tightly linked through plant-mediated mechanisms, including indirect interactions between foliar and root herbivores underpinned by changes in host plant chemistry (e.g. defensive or nutritional status). To date, studies addressing interactions involving nutritional mechanisms have relied on rudimentary chemical measurements (e.g. total/soluble nitrogen), overlooking other nutrients such as minerals and specific amino acids. 2. This study investigated how the nutrient composition of barley ( Hordeum vulgare ) responded to separate and simultaneous attack by root-feeding wireworms ( Agriotes spp.) and foliar-feeding aphids ( Rhopalosiphum padi ) after short and long exposures to herbivory, and determined whether the two insects indirectly interacted with each other. 3. Wireworms significantly reduced total plant mass and leaf dry mass by up to 25%, but had little impact on nutritional chemistry compared with aphids. Aphids did not affect plant growth but caused significant reductions in most leaf minerals: nitrogen (N), sulphur (S), calcium (Ca) and phosphorus (P). In contrast, aphids increased root mineral concentrations: N, S, Ca and potassium (K). Aphid-induced changes occurred in both short and long exposure experiments, with the exception of leaf Ca, and root N and K which were only significantly affected in the short exposure experiment. 4. Above-ground and below-ground herbivory had several interactive (often reversible) effects on plant nutrients. For example, wireworms strengthened the aphid-driven increases in root S by 35% after short exposure, but reduced aphid-induced increases by 10% after longer exposure. 5. There was evidence for positive bi-directional interactions between above-ground and below-ground herbivores, with wireworms promoting aphid numbers by 30% and aphids increasing wireworm mass by 25%. 6. Contrary to previous mechanistic explanations, below-ground herbivory had little impact on foliar amino acid concentrations, whereas aphids caused significant (approximately 50%) reductions in essential amino acids. However, after longer exposure to wireworm herbivory, aphid-driven reductions in essential amino acids were attenuated. Aphids caused significant increases in root mineral concentrations (especially root S) which potentially promoted wireworm performance. 7. The significance of these findings is discussed in the context of current hypotheses of aboveground × below-ground herbivore interactions. In particular, examining specific plant nutrients could be critical to understanding conditional outcomes of insect × plant interactions.

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“…The authors reported signiÞcant differences in concentrations of 10 different nutrient concentrations in potato leaves collected from the manure-amended and nonmanured plots with boron and phosphorous having a negative effect on L. decemlineata numbers, whereas zinc had a positive effect. Marazzi and Städler (2005) showed that larval development rate, survival to pupation and eclosion, and adult mass of the cabbage root ßy, Delia radicum (L.) were signiÞcantly and positively correlated with sulfur soil fertilization in oil rapeseed plants (Brassica napus L.).…”

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confidence: 99%

Conventional and Organic Soil Fertility Management Practices Affect Corn Plant Nutrition andOstrinia nubilalis(Lepidoptera: Crambidae) Larval Performance

Murrell¹,

Cullen²

2014

Environ Entomol

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Few studies compare how different soil fertilization practices affect plant mineral content and insect performance in organic systems. This study examined: 1) The European corn borer, Ostrinia nubilalis (Hübner), larval response on corn (Zea mays L.) grown in field soils with different soil management histories; and 2) resilience of these plants to O. nubilalis herbivory. Treatments included: 1) standard organic--organically managed soil fertilized with dairy manure and 2 yr of alfalfa (Medicago sativa L.) in the rotation; 2) basic cation saturation ratio--organically managed soil fertilized with dairy manure and alfalfa nitrogen credits, plus addition of gypsum (CaSO4·2H2O) according to the soil balance hypothesis; and 3) conventional--conventionally managed soil fertilized with synthetic fertilizers. Corn plants were reared to maturity in a greenhouse, and then infested with 0-40 O. nubilalis larvae for 17 d. O. nubilalis exhibited negative competitive response to increasing larval densities. Mean development time was significantly faster for larvae consuming basic cation saturation ratio plants than those on standard organic plants, with intermediate development time on conventional plants. Neither total yield (number of kernels) nor proportion kernels damaged differed among soil fertility treatments. Soil nutrients differed significantly in S and in Ca:Mg and Ca:K ratios, but principal components analysis of plant tissue samples taken before O. nubilalis infestation showed that S, Fe, and Cu contributed most to differences in plant nutrient profiles among soil fertility treatments. Results demonstrate that different fertilization regimens can significantly affect insect performance within the context of organic systems, but the effects in this study were relatively minor compared with effects of intraspecific competition.

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Influence of sulphur plant nutrition on oviposition and larval performance of the cabbage root fly

Cited by 10 publications

References 30 publications

Varying responses of insect herbivores to altered plant chemistry under organic and conventional treatments

Varying responses of insect herbivores to altered plant chemistry under organic and conventional treatments

Reappraising the role of plant nutrients as mediators of interactions between root‐ and foliar‐feeding insects

Conventional and Organic Soil Fertility Management Practices Affect Corn Plant Nutrition andOstrinia nubilalis(Lepidoptera: Crambidae) Larval Performance

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