Petunia floral trait plasticity in response to soil nitrogen content and subsequent impacts on insect visitation

Majetic, Cassie J.; Fetters, Andrea M.; Beck, Olivia M.; Stachnik, Elizabeth F.; Beam, Katelyn M.

doi:10.1016/j.flora.2016.08.002

Cited by 41 publications

(45 citation statements)

References 63 publications

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“…[112]) may also influence floral scent. Soil nitrogen availability influences production and emission of a range of plant volatiles, including those involved in plant-insect signalling [113], though evidence of such effects on floral volatiles specifically is limited [114,115]. It is plausible that changes in other properties of soil chemistry might have similar effects [116], but this does not appear to have been extensively studied.…”

Section: Pollutionmentioning

confidence: 99%

Nocturnal pollination: an overlooked ecosystem service vulnerable to environmental change

Macgregor

Scott-Brown

2020

Emerging Topics in Life Sciences

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Existing assessments of the ecosystem service of pollination have been largely restricted to diurnal insects, with a particular focus on generalist foragers such as wild and honey bees. As knowledge of how these plant-pollinator systems function, their relevance to food security and biodiversity, and the fragility of these mutually beneficial interactions increases, attention is diverting to other, less well-studied pollinator groups. One such group are those that forage at night. In this review, we document evidence that nocturnal species are providers of pollination services (including pollination of economically valuable and culturally important crops, as well as wild plants of conservation concern), but highlight how little is known about the scale of such services. We discuss the primary mechanisms involved in night-time communication between plants and insect pollen-vectors, including floral scent, visual cues (and associated specialized visual systems), and thermogenic sensitivity (associated with thermogenic flowers). We highlight that these mechanisms are vulnerable to direct and indirect disruption by a range of anthropogenic drivers of environmental change, including air and soil pollution, artificial light at night, and climate change. Lastly, we highlight a number of directions for future research that will be important if nocturnal pollination services are to be fully understood and ultimately conserved.

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Section: Pollutionmentioning

confidence: 99%

Nocturnal pollination: an overlooked ecosystem service vulnerable to environmental change

Macgregor

Scott-Brown

2020

Emerging Topics in Life Sciences

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“…Larger-scale manipulative studies are possible, for example, using free-air carbon dioxide enrichment (FACE) plots, although we are not aware of any such studies that measure floral VOCs and compare them to those produced in control plots. Other abiotic factors that can be experimentally manipulated and are known to alter floral scent include air pollution ( McFrederick et al, 2008 ; Fuentes et al, 2016 ) and nutrient availability ( Majetic et al, 2016 ). Biotic interactions, such as herbivory or disease, experienced by plants can be manipulated by caging caterpillars or other herbivores on leaves, applying plant hormones like jasmonic acid, or infecting plants with pathogens (e.g., Kessler and Halitschke, 2009 ; Schiestl et al, 2014 ; Hoffmeister et al, 2016 ).…”

Section: Approachesmentioning

confidence: 99%

The smell of environmental change: Using floral scent to explain shifts in pollinator attraction

Burkle

Runyon

2017

Appl Plant Sci

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As diverse environmental changes continue to influence the structure and function of plant–pollinator interactions across spatial and temporal scales, we will need to enlist numerous approaches to understand these changes. Quantitative examination of floral volatile organic compounds (VOCs) is one approach that is gaining popularity, and recent work suggests that floral VOCs hold substantial promise for better understanding and predicting the effects of environmental change on plant–pollinator interactions. Until recently, few ecologists were employing chemical approaches to investigate mechanisms by which components of environmental change may disrupt these essential mutualisms. In an attempt to make these approaches more accessible, we summarize the main field, laboratory, and statistical methods involved in capturing, quantifying, and analyzing floral VOCs in the context of changing environments. We also highlight some outstanding questions that we consider to be highly relevant to making progress in this field.

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“…Future studies on C. calceolus should consider further factors that might influence scent emissions, such as environmental factors other than pollinators (e.g., soil properties [36,37], temperature [38]), selection by natural enemies [39], and genetic drift [9] to better understand the mechanisms that generate and sustain variation in scent traits in this plant species. Data Availability Statement: All data presented in this study are available in Tables 1 and 2.…”

Section: Conflicts Of Interestmentioning

confidence: 99%

Floral Scent and Pollinators of Cypripedium calceolus L. at Different Latitudes

2020

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Floral scent is an important trait in plant–pollinator interactions. It not only varies among plant species but also among populations within species. Such variability might be caused by various non–selective factors, or, as has been shown in some instances, might be the result of divergent selective pressures exerted by variable pollinator climates. Cypripedium calceolus is a Eurasian deceptive orchid pollinated mainly by bees, which spans wide altitudinal and latitudinal gradients in mainly quite isolated populations. In the present study, we investigated whether pollinators and floral scents vary among different latitudes. Floral scents of three C. calceolus populations in the Southern Alps were collected by dynamic headspace and analyzed by gas chromatography coupled to mass spectrometry (GC/MS). These data were completed by previously published scent data of the Northern Alps and Scandinavia. The scent characteristics were compared with information on pollinators recorded for present study or available in the literature. More than 80 scent compounds were overall recorded from plants of the three regions, mainly aliphatics, terpenoids, and aromatics. Seven compounds were found in all samples, and most samples were dominated by linalool and octyl acetate. Although scents differed among regions and populations, the main compounds were similar among regions. Andrena and Lasioglossum species were the main pollinators in all three regions, with Andrena being relatively more abundant than Lasioglossum in Scandinavia. We discuss natural selection mediated by pollinators and negative frequency–dependent selection as possible reasons for the identified variation of floral scent within and among populations and regions.

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Petunia floral trait plasticity in response to soil nitrogen content and subsequent impacts on insect visitation

Cited by 41 publications

References 63 publications

Nocturnal pollination: an overlooked ecosystem service vulnerable to environmental change

Nocturnal pollination: an overlooked ecosystem service vulnerable to environmental change

The smell of environmental change: Using floral scent to explain shifts in pollinator attraction

Floral Scent and Pollinators of Cypripedium calceolus L. at Different Latitudes

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