James Blande - Academia.edu (original) (raw)
Papers by James Blande
Environmental Pollution, Aug 1, 2020
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Journal of Chemical Ecology, Mar 29, 2017
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Environmental Research, Aug 1, 2023
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Proceedings of The Royal Society B: Biological Sciences, Nov 9, 2022
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Advances in Botanical Research, 2017
Abstract Plants and herbivores both release volatile organic compounds that have important roles ... more Abstract Plants and herbivores both release volatile organic compounds that have important roles in mediating important biological functions related to defence and reproduction. Plants emit complex blends of chemicals that are involved in multitrophic interactions, coordination of systemic defence responses and pollination, whereas herbivorous insects release pheromones that play important roles in attracting mates, instigating defence responses and initiating aggregation. Interactions between plants and herbivores have been subject to a wealth of studies and knowledge on their biology, biochemistry, ecology and evolution is constantly expanding. In this chapter the idea of communication between plants and herbivores will be explored. Communication between organisms of consecutive trophic levels is somewhat controversial due to unidirectional reliance and competition precluding some of the requirements of a conventional communication process, but there are growing examples of where chemically mediated interactions between plants and herbivores can be viewed as eavesdropping by a signal recipient, or even as true communication where both chemical emitter and receiver gain a benefit from communication. Examples of herbivores responding to plant-emitted cues and plants responding to herbivore-emitted cues are both explored, and suggestions for future directions in this field are provided.
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Plant Signaling & Behavior, Aug 1, 2008
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Oecologia, Jun 25, 2021
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Journal of Chemical Ecology, Aug 1, 2016
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Environmental Pollution, Jun 1, 2021
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Signaling and communication in plants, 2016
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Journal of Chemical Ecology, Feb 28, 2007
Diaeretiella rapae, a parasitoid that predominately specializes in the parasitism of Brassica-fee... more Diaeretiella rapae, a parasitoid that predominately specializes in the parasitism of Brassica-feeding aphids, attacks Lipaphis erysimi, a specialist feeding aphid of the Brassicaceae and other families in the Capparales, at a greater rate than the generalist-feeding aphid, Myzus persicae. In this study, we investigated the orientation behavior of D. rapae to the volatile chemicals produced when these two aphid species feed on turnip (Brassica rapa var rapifera). We showed no significant preference orientation behavior to either aphid/turnip complex over the other. Isothiocyanates are among the compounds emitted by plants of the Brassicaceae in response to insect feeding damage, including by aphids. We assessed parasitoid orientation behavior in response to laboratory-formulated isothiocyanates. We tested two formulations and discovered significant orientation toward 3-butenyl isothiocyanate. We also assessed plant and aphid glucosinolate content, and showed large levels of glucosinolate concentration in L. erysimi, whereas there was little change in plant content in response to aphid feeding. Our results suggest that during the process of host location, similar cues may be utilized for locating L. erysimi and M. persicae, whereas the acceptance of hosts and their suitability may involve aspects of nonvolatile aphid chemistry.
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The turnip aphid, Lipaphis erysimi (Kaltenbach), is a specialist crucifer feeding herbivore. The ... more The turnip aphid, Lipaphis erysimi (Kaltenbach), is a specialist crucifer feeding herbivore. The peach-potato aphid, Myzus persicae (Sulzer), is a generalist herbivore with the ability to colonise and feed on a wide range of host plants including crucifers. Diaeretiella rapae ( ...
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Plant Signaling & Behavior, Feb 14, 2020
ABSTRACT Numerous factors can affect the Biogenic Volatile Organic Compounds (BVOC) emitted by pl... more ABSTRACT Numerous factors can affect the Biogenic Volatile Organic Compounds (BVOC) emitted by plants. One of these factors is the microbial communities living on leaf surfaces (phylloplane). Bacteria and fungi can use compounds produced and emitted by plants for their own metabolism. Thus, microorganism communities can modulate BVOC emissions and affect interactions between plants and other organisms. The aim of this study was to evaluate the role of microbial communities on BVOC emissions of Brassica nigra leaves. Therefore, we removed bacteria and/or fungi by using bactericide/fungicide treatments in a factorial design experiment with Brassica nigra grown in pots. BVOC emissions were sampled before and after the treatment application. Our results showed that four new compounds (cyclohexanone, cyclohexyl cyanide and two unknown compounds) were emitted after the removal of fungi, whereas no effect was detected in response to the bactericide treatment. This suggests that fungi inhibit or reduce the production of the above mentioned BVOCs from Brassica nigra leaves or use those compounds for their own metabolism. The origin and the roles of the novel compounds emitted requires further investigation.
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Atmosphere, Nov 10, 2020
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Journal of Ecology, Dec 1, 2022
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Kaistasekaviljely ja kierrätysravinteet monimuotoisessa ja resurssitehokkaassa luomuvihannestuota... more Kaistasekaviljely ja kierrätysravinteet monimuotoisessa ja resurssitehokkaassa luomuvihannestuotannossa (SUREVEG-hanke) esittelyss
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Environmental Pollution, 2023
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Proceedings of The Royal Society B: Biological Sciences, Oct 27, 2021
Plant-to-plant volatile-mediated communication and subsequent induced resistance to insect herbiv... more Plant-to-plant volatile-mediated communication and subsequent induced resistance to insect herbivores is common. Less clear is the adaptive significance of these interactions; what selective mechanisms favour plant communication and what conditions allow individuals to benefit by both emitting and responding to cues? We explored the predictions of two non-exclusive hypotheses to explain why plants might emit cues, the kin selection hypothesis (KSH) and the mutual benefit hypothesis (MBH). We examined 15 populations of sagebrush that experience a range of naturally occurring herbivory along a 300 km latitudinal transect. As predicted by the KSH, we found several uncommon chemotypes with some chemotypes occurring only within a single population. Consistent with the MBH, chemotypic diversity was negatively correlated with herbivore pressure; sites with higher levels of herbivory were associated with a few common cues broadly recognized by most individuals. These cues varied among different populations. Our results are similar to those reported for anti-predator signalling in vertebrates.
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Environmental Pollution, Aug 1, 2020
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Journal of Chemical Ecology, Mar 29, 2017
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Environmental Research, Aug 1, 2023
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Proceedings of The Royal Society B: Biological Sciences, Nov 9, 2022
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Advances in Botanical Research, 2017
Abstract Plants and herbivores both release volatile organic compounds that have important roles ... more Abstract Plants and herbivores both release volatile organic compounds that have important roles in mediating important biological functions related to defence and reproduction. Plants emit complex blends of chemicals that are involved in multitrophic interactions, coordination of systemic defence responses and pollination, whereas herbivorous insects release pheromones that play important roles in attracting mates, instigating defence responses and initiating aggregation. Interactions between plants and herbivores have been subject to a wealth of studies and knowledge on their biology, biochemistry, ecology and evolution is constantly expanding. In this chapter the idea of communication between plants and herbivores will be explored. Communication between organisms of consecutive trophic levels is somewhat controversial due to unidirectional reliance and competition precluding some of the requirements of a conventional communication process, but there are growing examples of where chemically mediated interactions between plants and herbivores can be viewed as eavesdropping by a signal recipient, or even as true communication where both chemical emitter and receiver gain a benefit from communication. Examples of herbivores responding to plant-emitted cues and plants responding to herbivore-emitted cues are both explored, and suggestions for future directions in this field are provided.
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Plant Signaling & Behavior, Aug 1, 2008
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Oecologia, Jun 25, 2021
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Journal of Chemical Ecology, Aug 1, 2016
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Environmental Pollution, Jun 1, 2021
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Signaling and communication in plants, 2016
Bookmarks Related papers MentionsView impact
Journal of Chemical Ecology, Feb 28, 2007
Diaeretiella rapae, a parasitoid that predominately specializes in the parasitism of Brassica-fee... more Diaeretiella rapae, a parasitoid that predominately specializes in the parasitism of Brassica-feeding aphids, attacks Lipaphis erysimi, a specialist feeding aphid of the Brassicaceae and other families in the Capparales, at a greater rate than the generalist-feeding aphid, Myzus persicae. In this study, we investigated the orientation behavior of D. rapae to the volatile chemicals produced when these two aphid species feed on turnip (Brassica rapa var rapifera). We showed no significant preference orientation behavior to either aphid/turnip complex over the other. Isothiocyanates are among the compounds emitted by plants of the Brassicaceae in response to insect feeding damage, including by aphids. We assessed parasitoid orientation behavior in response to laboratory-formulated isothiocyanates. We tested two formulations and discovered significant orientation toward 3-butenyl isothiocyanate. We also assessed plant and aphid glucosinolate content, and showed large levels of glucosinolate concentration in L. erysimi, whereas there was little change in plant content in response to aphid feeding. Our results suggest that during the process of host location, similar cues may be utilized for locating L. erysimi and M. persicae, whereas the acceptance of hosts and their suitability may involve aspects of nonvolatile aphid chemistry.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
The turnip aphid, Lipaphis erysimi (Kaltenbach), is a specialist crucifer feeding herbivore. The ... more The turnip aphid, Lipaphis erysimi (Kaltenbach), is a specialist crucifer feeding herbivore. The peach-potato aphid, Myzus persicae (Sulzer), is a generalist herbivore with the ability to colonise and feed on a wide range of host plants including crucifers. Diaeretiella rapae ( ...
Bookmarks Related papers MentionsView impact
Plant Signaling & Behavior, Feb 14, 2020
ABSTRACT Numerous factors can affect the Biogenic Volatile Organic Compounds (BVOC) emitted by pl... more ABSTRACT Numerous factors can affect the Biogenic Volatile Organic Compounds (BVOC) emitted by plants. One of these factors is the microbial communities living on leaf surfaces (phylloplane). Bacteria and fungi can use compounds produced and emitted by plants for their own metabolism. Thus, microorganism communities can modulate BVOC emissions and affect interactions between plants and other organisms. The aim of this study was to evaluate the role of microbial communities on BVOC emissions of Brassica nigra leaves. Therefore, we removed bacteria and/or fungi by using bactericide/fungicide treatments in a factorial design experiment with Brassica nigra grown in pots. BVOC emissions were sampled before and after the treatment application. Our results showed that four new compounds (cyclohexanone, cyclohexyl cyanide and two unknown compounds) were emitted after the removal of fungi, whereas no effect was detected in response to the bactericide treatment. This suggests that fungi inhibit or reduce the production of the above mentioned BVOCs from Brassica nigra leaves or use those compounds for their own metabolism. The origin and the roles of the novel compounds emitted requires further investigation.
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Atmosphere, Nov 10, 2020
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Journal of Ecology, Dec 1, 2022
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Kaistasekaviljely ja kierrätysravinteet monimuotoisessa ja resurssitehokkaassa luomuvihannestuota... more Kaistasekaviljely ja kierrätysravinteet monimuotoisessa ja resurssitehokkaassa luomuvihannestuotannossa (SUREVEG-hanke) esittelyss
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Environmental Pollution, 2023
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Proceedings of The Royal Society B: Biological Sciences, Oct 27, 2021
Plant-to-plant volatile-mediated communication and subsequent induced resistance to insect herbiv... more Plant-to-plant volatile-mediated communication and subsequent induced resistance to insect herbivores is common. Less clear is the adaptive significance of these interactions; what selective mechanisms favour plant communication and what conditions allow individuals to benefit by both emitting and responding to cues? We explored the predictions of two non-exclusive hypotheses to explain why plants might emit cues, the kin selection hypothesis (KSH) and the mutual benefit hypothesis (MBH). We examined 15 populations of sagebrush that experience a range of naturally occurring herbivory along a 300 km latitudinal transect. As predicted by the KSH, we found several uncommon chemotypes with some chemotypes occurring only within a single population. Consistent with the MBH, chemotypic diversity was negatively correlated with herbivore pressure; sites with higher levels of herbivory were associated with a few common cues broadly recognized by most individuals. These cues varied among different populations. Our results are similar to those reported for anti-predator signalling in vertebrates.
Bookmarks Related papers MentionsView impact