Variation in Cyanogenic Glycosides Across Populations of Wild Lima Beans (Phaseolus lunatus) Has No Apparent Effect on Bruchid Beetle Performance

Shlichta, J. Gwen; Glauser, Gaëtan; Benrey, Betty

doi:10.1007/s10886-014-0434-0

Cited by 32 publications

(29 citation statements)

References 39 publications

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“…Under this scenario, parasitoid fitness would not be expected to vary between plant species, as observed in this study. In support of this interpretation, previous work has shown that Z. subfasciatus can tolerate high concentrations of cyanogenic compounds present in P. lunatus (lima bean) without exhibiting detectable reductions in fitness correlates (Shlichta et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Plant species variation in bottom‐up effects across three trophic levels: a test of traits and mechanisms

Moreira

Abdala‐Roberts²,

Hernández‐Cumplido

et al. 2015

Ecological Entomology

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1. An increasing number of studies have addressed the mechanisms by which plant inter-specific variation influence interactions at higher trophic levels, but little is known about the underlying plant traits driving these dynamics.2. Here we investigated the effects of host plant species on herbivore-parasitoid interactions and the underlying traits driving such effects. For this, we measured the abundance of seed-eating bruchids and their parasitoids across seven sympatric populations of the bean species Phaseolus coccineus and Phaseolus vulgaris in Central Mexico. To investigate the mechanisms underlying differences between bean species in bruchid-parasitoid interactions, we carried out two laboratory experiments to test whether bruchid and parasitoid performance differed between plant species. We also measured seed size and phenolic compounds to investigate if seed traits mediate bruchid-parasitoid interactions by influencing herbivore susceptibility or resistance to parasitoids.3. Field surveys revealed that the rate of parasitoid recruitment to bruchids was significantly higher on P. vulgaris than on P. coccineus. Subsequent laboratory bioassays indicated that bruchids developed more slowly and exhibited lower fitness on P. vulgaris seeds than on P. coccineus seeds. Accordingly, we found that bean species differed in seed size, with P. vulgaris having smaller (less nutritious) seeds, which explains why bruchid development was slower on this plant species. 4. These results provide a mechanism for why bruchids exhibited higher parasitism rates on seeds of P. vulgaris in the field which could be due to Slow-Growth/ High-Mortality effects, a smaller physical refuge provided by the seed, or both factors. The roles of these mechanisms remain inconclusive without further study.

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Section: Discussionmentioning

confidence: 97%

Plant species variation in bottom‐up effects across three trophic levels: a test of traits and mechanisms

Moreira

Abdala‐Roberts²,

Hernández‐Cumplido

et al. 2015

Ecological Entomology

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“…Toxic compounds are also present in some legumes. Lima beans ( Pheaseolus lunatus ), together with many other legumes, contain cyanogenic glucosides, which cause respiratory distress when consumed in high quantities (Shlichta, Glauser, & Benrey, ). In the grass pea Lathyrus sativus , a nonprotein amino acid, β‐N‐oxalyl‐l‐α,β‐diaminopropionic acid (β‐ODAP), is present.…”

Section: The Benefit Of Legumesmentioning

confidence: 99%

Legume biofortification is an underexploited strategy for combatting hidden hunger

Rehman

Cooper

Lam

et al. 2018

Plant Cell & Environment

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Legumes are the world's primary source of dietary protein and are particularly important for those in developing economies. However, the biofortification potential of legumes remains underexploited. Legumes offer a diversity of micronutrients and amino acids, exceeding or complementing the profiles of cereals. As such, the enhancement of legume nutritional composition presents an appealing target for addressing the "hidden hunger" of global micronutrient malnutrition. Affecting ~2 billion people, micronutrient malnutrition causes severe health effects ranging from stunted growth to reduced lifespan. An increased availability of micronutrient-enriched legumes, particularly to those in socio-economically deprived areas, would serve the dual functions of ameliorating hidden hunger and increasing the positive health effects associated with legumes. Here, we give an updated overview of breeding approaches for the nutritional improvement of legumes, and crucially, we highlight the importance of considering nutritional improvement in a wider ecological context. Specifically, we review the potential of the legume microbiome for agronomic trait improvement and highlight the need for increased genetic, biochemical, and environmental data resources. Finally, we state that such resources should be complemented by an international and multidisciplinary initiative that will drive crop improvement and, most importantly, ensure that research outcomes benefit those who need them most.

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“…For the experiments we used seeds from three cultivated varieties and three wild populations of P. lunatus (Figure 1) Shlichta et al, 2014). We collected seeds from 10 plants per site (only six for HGO).…”

Section: Seedsmentioning

confidence: 99%

The Large Seed Size of Domesticated Lima Beans Mitigates Intraspecific Competition among Seed Beetle Larvae

2017

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The domestication of beans has selected for larger seeds in cultivated plants compared to their wild relatives. This has not only resulted in an enhanced resource for humans, but also for the insects that feed on these seeds. Seed beetles that attack wild and cultivated seeds often lay several eggs on a single seed. We hypothesized that the larger seed size of domesticated beans will mitigate the competition among the larvae that hatch from these eggs, with important implications for their growth and survival. To test this we examined how seed size of wild and cultivated Phaseolus lunatus (lima bean) affect the performance of the Mexican bean weevil Zabrotes subfasciatus, an important pest of beans in Mexico. A negative correlation was found between the initial number of eggs on a seed and the weight of female beetles that emerged, but only for the much smaller wild seeds. Similarly, beetle survival was found to be negatively correlated with competition intensity only on wild seeds. Our results imply that by selecting for larger seeds, domestication of P. lunatus has reduced the intensity of intraspecific larval competition of Z. subfasciatus.

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Variation in Cyanogenic Glycosides Across Populations of Wild Lima Beans (Phaseolus lunatus) Has No Apparent Effect on Bruchid Beetle Performance

Cited by 32 publications

References 39 publications

Plant species variation in bottom‐up effects across three trophic levels: a test of traits and mechanisms

Plant species variation in bottom‐up effects across three trophic levels: a test of traits and mechanisms

Legume biofortification is an underexploited strategy for combatting hidden hunger

The Large Seed Size of Domesticated Lima Beans Mitigates Intraspecific Competition among Seed Beetle Larvae

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