The role of alkaloids in the feeding behaviour of slugs (Gastropoda: Stylommatophora) as pests of narrow-leafed lupin plants

Kozłowski, Jan; Jaskulska, M.; Kozłowska, Maria

doi:10.1080/09064710.2016.1259423

Cited by 8 publications

(10 citation statements)

References 35 publications

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“…On the other hand, pine needles with high terpene concentrations as well as artificial diets laced with either one of the terpenes Δ 3 -carene or α-pinene were eaten significantly less by slugs (O’Reilly-Wapstra et al 2007 ). Similarly, high-alkaloid accessions of the legume Lupinus angustifolius suffered less feeding damage from three different slug species than those with low concentrations of lupin alkaloids (Kozlowski et al 2017 ). Together, these studies indicate that gastropods commonly respond to chemical variation within a plant species.…”

Section: Introductionmentioning

confidence: 99%

Glycoalkaloid composition explains variation in slug resistance in Solanum dulcamara

et al. 2018

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In natural environments, plants have to deal with a wide range of different herbivores whose communities vary in time and space. It is believed that the chemical diversity within plant species has mainly arisen from selection pressures exerted by herbivores. So far, the effects of chemical diversity on plant resistance have mostly been assessed for arthropod herbivores. However, also gastropods, such as slugs, can cause extensive damage to plants. Here we investigate to what extent individual Solanum dulcamara plants differ in their resistance to slug herbivory and whether this variation can be explained by differences in secondary metabolites. We performed a series of preference assays using the grey field slug (Deroceras reticulatum) and S. dulcamara accessions from eight geographically distinct populations from the Netherlands. Significant and consistent variation in slug preference was found for individual accessions within and among populations. Metabolomic analyses showed that variation in steroidal glycoalkaloids (GAs) correlated with slug preference; accessions with high GA levels were consistently less damaged by slugs. One, strongly preferred, accession with particularly low GA levels contained high levels of structurally related steroidal compounds. These were conjugated with uronic acid instead of the glycoside moieties common for Solanum GAs. Our results illustrate how intraspecific variation in steroidal glycoside profiles affects resistance to slug feeding. This suggests that also slugs should be considered as important drivers in the co-evolution between plants and herbivores.Electronic supplementary materialThe online version of this article (10.1007/s00442-018-4064-z) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Glycoalkaloid composition explains variation in slug resistance in Solanum dulcamara

et al. 2018

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“…In the early 1930s, German and Russian breeders produced the first low-alkaloid varieties directly suitable for human and animal consumption ( Ivanov et al , 1932 ; von Sengbusch, 1930 ). The introduction of these ‘sweet varieties’ paved the way for wider adoption in Europe and later in Australia, but at the same time resulted in higher susceptibility to herbivores ( Wink, 1990 ; Kozłowski et al , 2016 ). This is not surprising given the proposed roles of the lupin alkaloids in defense ( Wink, 1998 ).…”

Section: Introductionmentioning

confidence: 99%

Transcript profiling of a bitter variety of narrow-leafed lupin to discover alkaloid biosynthetic genes

Yang

Nagy

Mancinotti

et al. 2017

Journal of Experimental Botany

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“…Lupines ( Lupinus spp., Fabaceae) are nectarless, pollen‐rewarding, and primarily bee‐pollinated (though some may be capable of autogamous self‐pollination) (Dunn, ; Gori, ), and thus represent ideal plants to assess patterns of secondary compound expression within pollen relative to a whole‐plant context. Lupines produce quinolizidine and/or piperidine alkaloids, secondary compounds which are deterrent and toxic to some invertebrate herbivores and which may be toxic and/or teratogenic to ungulates (Dolinger et al., ; Panter et al., ; Lee et al., ; Kozłowski et al., ). Only two studies, to our knowledge, have measured lupine pollen secondary chemistry, both finding that alkaloid concentrations in seeds, leaves, and/or flowers exceeded those in pollen (Detzel and Wink, ; Arnold et al., ).…”

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confidence: 99%

Pollen and vegetative secondary chemistry of three pollen‐rewarding lupines

Heiling

Cook

Lee

et al. 2019

American J of Botany

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Premise Optimal defense theory predicts that selection should drive plants to disproportionally allocate resources for herbivore defense to tissues with high fitness values. Because pollen's primary role is the transport of gametes, plants may be expected to defend it from herbivory. However, for many animal‐pollinated plants, pollen serves a secondary role as a pollinator reward. These dual roles may present a conflict between selection to defend pollen from herbivores and selection to reward pollinators. Here, we investigate whether pollen secondary chemistry in three pollen‐rewarding Lupinus species better reflects the need to defend pollen or reward pollinators. Methods Lupinus (Fabaceae) species are nectarless, pollen‐rewarding, and produce defensive quinolizidine and/or piperidine alkaloids throughout their tissues. We used gas chromatography to identify and quantitate the alkaloids in four aboveground tissues (pollen, flower, leaf, stem) of three western North American lupines, L. argenteus, L. bakeri, and L. sulphureus, and compared alkaloid concentrations and composition among tissues within individuals. Results In L. argenteus and L. sulphureus, pollen alkaloid concentrations were 11–35% of those found in other tissues. We detected no alkaloids in L. bakeri pollen, though they were present in other tissues. Alkaloid concentrations were not strongly correlated among tissues within individuals. We detected fewer alkaloids in pollen compared to other tissues, and pollen contained no unique alkaloids. Conclusions Our results are consistent with the hypothesis that, in these pollen‐rewarding species, pollen secondary chemistry may reflect the need to attract and reward pollinators more than the need to defend pollen from herbivory.

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The role of alkaloids in the feeding behaviour of slugs (Gastropoda: Stylommatophora) as pests of narrow-leafed lupin plants

Cited by 8 publications

References 35 publications

Glycoalkaloid composition explains variation in slug resistance in Solanum dulcamara

Glycoalkaloid composition explains variation in slug resistance in Solanum dulcamara

Transcript profiling of a bitter variety of narrow-leafed lupin to discover alkaloid biosynthetic genes

Pollen and vegetative secondary chemistry of three pollen‐rewarding lupines

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