John Caulfield

NameJohn Caulfield
Job titleResearch Scientist - Analytical Chemistry/Mass Spectrometry
Email addressjohn.caulfield@rothamsted.ac.uk
DepartmentProtecting Crops and the Environment
Research clusterBCP: Pest-Host Interactions
ORCIDhttps://orcid.org/0000-0003-1799-370X
Preferred citationCaulfield, J. C.
OfficeHarpenden

Research outputs

Using dynamic headspace collections for bacterial volatile sampling

Novakova, B., Caulfield, J. C., Withall, D., Birkett, M. A., Vuts, J. and Thomas, G. 2024. Using dynamic headspace collections for bacterial volatile sampling. protocols.io https://doi.org/dx.doi.org/10.17504/protocols.io.kqdg3q4eev25/v1

Characterisation of aphid antixenosis in aphid-resistant ancestor wheat, Triticum monococcum

Borg, A. N., Vuts, J., Caulfield, J. C., Withall, D. M., Foulkes M. J. and Birkett, M. A. 2024. Characterisation of aphid antixenosis in aphid-resistant ancestor wheat, Triticum monococcum. Pest Management Science. https://doi.org/10.1002/ps.8380

Yellow rust infection of wheat: How the quantity of light received by wheat seedlings before inoculation affects infection efficiency

Caulfield, J. C., Boyd, L., Zanella, C., MacCormack, R., Gordon, A., Jones, H. D. and Hubbard, A. 2024. Yellow rust infection of wheat: How the quantity of light received by wheat seedlings before inoculation affects infection efficiency. Plant Pathology. https://doi.org/10.1111/ppa.13977

Solvent Extraction of Polydimethylsiloxane (PDMS) Tubing to Capture Volatile Organic Compounds from the Headspace and the Rhizosphere

Thomas, G., Mohan-Kumar, A., Borg, A., Caulfield, J. C., Birkett, M. A. and Vuts, J. 2024. Solvent Extraction of Polydimethylsiloxane (PDMS) Tubing to Capture Volatile Organic Compounds from the Headspace and the Rhizosphere. protocols.io https://doi.org/10.17504/protocols.io.eq2lyjmqrlx9/v1

Novel pheromone-mediated reproductive behaviour in the stag beetle, Lucanus cervus

Harvey, D. J., Vuts, J., Hooper, A. M., Caulfield, J. C., Finch, P., Gange, A. C., Chapman, J., Birkett, M. A. and Pickett, J. A. 2024. Novel pheromone-mediated reproductive behaviour in the stag beetle, Lucanus cervus. Scientific Reports. 14, p. 6037. https://doi.org/10.1038/s41598-024-55985-8

Solvent extraction of PDMS tubing as a new method for the capture of volatile organic compounds from headspace

Thomas, G., Caulfield, J. C., Nikolaeva-Reynolds, L.R., Birkett, M. A. and Vuts, J. 2024. Solvent extraction of PDMS tubing as a new method for the capture of volatile organic compounds from headspace. Journal of Chemical Ecology. 50, pp. 85-99. https://doi.org/10.1007/s10886-024-01469-y

Chemical cues from beetle larvae trigger proliferation and virulence of a plant pathogen

Cambon, M., Thomas, G., Caulfield, J. C., Crampton, M., Doonan, J. M., Hussain, U., Denman, S., Vuts, J. and McDonald, J. E. 2023. Chemical cues from beetle larvae trigger proliferation and virulence of a plant pathogen. bioRxiv. https://doi.org/10.1101/2023.11.21.568124

Effects of root inoculation of entomopathogenic fungi on olfactory-mediated behavior and life-history traits of the parasitoid Aphidius ervi (Haliday) (Hymenoptera: Braconidae)

Wilberts, L., Vuts, J., Caulfield, J. C., Thomas, G., Withall, D., Wackers, F., Birkett, M. A., Jacquemyn, H. and Lievens, B. 2023. Effects of root inoculation of entomopathogenic fungi on olfactory-mediated behavior and life-history traits of the parasitoid Aphidius ervi (Haliday) (Hymenoptera: Braconidae). Pest Management Science. 80 (2), pp. 307-316. https://doi.org/10.1002/ps.7762

Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks

Matika, O., Foster, S., Githaka, N., Owido, G., Ngetich, C., Mwendia, C., Brown, H., Caulfield, J. C., Watson, K., Djikeng, A. and Birkett, M. A. 2023. Investigating volatile semiochemical production from Bos taurus and Bos indicus as a novel phenotype for breeding host resistance to ixodid ticks. Ticks and Tick-Borne Diseases. 14 (5), p. 102200. https://doi.org/10.1016/j.ttbdis.2023.102200

Role of herbivore-induced maize volatiles in the chemotactic behaviour of Telenomus podisi and Diceraeus melacanthus

Nascimento, I. N., Michereff, M. F. F., Pereira, W. E., Villas-Boas, P. R., Gusmao, M. R., Caulfield, J. C., Laumann, R. A., Borges, M. and Blassioli-Moraes, M. C. 2023. Role of herbivore-induced maize volatiles in the chemotactic behaviour of Telenomus podisi and Diceraeus melacanthus. Entomologia Experimentalis et Applicata. 171 (3), pp. 196-205. https://doi.org/10.1111/eea.13274

Impact of endophytic colonization by entomopathogenic fungi on the behavior and life history of the tobacco peach aphid Myzus persicae var. nicotianae

Vuts, J., Wilberts, L., Caulfield, J. C., Thomas, G., Birkett, M. A., Herrera-Malaver, B., Verstrepen, K. J., Sobhy, I. S., Jacquemyn, H. and Lievens, B. 2022. Impact of endophytic colonization by entomopathogenic fungi on the behavior and life history of the tobacco peach aphid Myzus persicae var. nicotianae. PLOS ONE. 17 (9), p. e0273791. https://doi.org/10.1371/journal.pone.0273791

Neotropical maize genotypes with different levels of benzoxazinoids affect fall armyworm development

Michereff, M., Nascimento, I. N., Santana, G. T., Sarria, A. L. F., Borges, M., Laumann, R. A., Withall, D., Caulfield, J. C., Birkett, M. A. and Blassioli-Moraes, C. 2022. Neotropical maize genotypes with different levels of benzoxazinoids affect fall armyworm development. Physiological Entomology. 47 (4), pp. 232-241. https://doi.org/10.1111/phen.12392

Companion and Smart Plants - Scientific Background to Promote Conservation Biological Control

Blassioli-Moraes, C., Venzon, M., Paterno Silveira, L. C., Moreira Gontijo, L., Brum Togni, P. H., Ryoiti Sujii, E., Mendes Haro, M., Borges, M., Michereff, M. F. F., Ferreira Santos de Aquino, M., Laumann, R. A., Caulfield, J. C. and Birkett, M. A. 2022. Companion and Smart Plants - Scientific Background to Promote Conservation Biological Control. Neotropical Entomology. 51, pp. 171-187. https://doi.org/10.1007/s13744-021-00939-2

An Innate Preference of Bumblebees for Volatile Organic Compounds Emitted by Phaseolus vulgaris Plants Infected With Three Different Viruses

Mhlanga, N. M., Murphy, A. M., Wamonje, F. O., Cunniffe, N. J., Caulfield, J. C., Glover, B. J. and Carr, J. P. 2021. An Innate Preference of Bumblebees for Volatile Organic Compounds Emitted by Phaseolus vulgaris Plants Infected With Three Different Viruses. Frontiers in Ecology and Evolution. 9, p. 626851. https://doi.org/10.3389/fevo.2021.626851

Exposure to sugarcane borer-induced plant volatile (E)-caryophyllene enhances parasitoid recruitment

Riffel, A., Da Silva Filho, B. F., Dos Santos, S. P. A., Da Silva, W. L., Ribeiro, T. F. L., Oliveira, D. J. A., Simoes de Oliveira, J., Gomes da Costa, J., Caulfield, J. C., Goulart, H. F., Santana, A. E. G. and Birkett, M. A. 2021. Exposure to sugarcane borer-induced plant volatile (E)-caryophyllene enhances parasitoid recruitment. Entomologia Experimentalis et Applicata. https://doi.org/10.1111/eea.13081

Identifying aphid resistance in the ancestral wheat Triticum monococcum under field conditions.

Simon, A. L., Caulfield, J. C., Hammond-Kosack, K. E., Field, L. M. and Aradottir, G. I. 2021. Identifying aphid resistance in the ancestral wheat Triticum monococcum under field conditions. Scientific Reports. 11, p. 13495. https://doi.org/10.1038/s41598-021-92883-9

Sex Pheromone of the Alfalfa Plant Bug, Adelphocoris lineolatus: Pheromone Composition and Antagonistic Effect of 1- Hexanol (Hemiptera: Miridae)

Koczor, S., Vuts, J., Caulfield, J. C., Withall, D., Sarria, A. L. F., Pickett, J. A., Birkett, M. A., Csonka, E. B. and Toth, M. 2021. Sex Pheromone of the Alfalfa Plant Bug, Adelphocoris lineolatus: Pheromone Composition and Antagonistic Effect of 1- Hexanol (Hemiptera: Miridae). Journal of Chemical Ecology. 47, pp. 525-533. https://doi.org/10.1007/s10886-021-01273-y

Iridoid Sex Pheromone Biosynthesis in Aphids Mimics Iridoid-Producing Plants

Partridge, S., Withall, D., Caulfield, J. C., Pickett, J. A., Stockman, R. A,, Oldham, N. J. and Birkett, M. A. 2021. Iridoid Sex Pheromone Biosynthesis in Aphids Mimics Iridoid-Producing Plants . Chemistry-A European Journal. 27 (25), pp. 7231-7234. https://doi.org/10.1002/chem.202001356

Three Aphid-Transmitted Viruses Encourage Vector Migration From Infected Common Bean (Phaseolus vulgaris) Plants Through a Combination of Volatile and Surface Cues

Wamonje, F. O., Tungadi, T. D., Murphy, A. M., Pate, A. E., Woodcock, C. M., Caulfield, J. C., Mutuku, J. M., Cunniffe, N. J., Bruce, T. J. A., Gilligan, C. A., Pickett, J. A. and Carr, J. P. 2020. Three Aphid-Transmitted Viruses Encourage Vector Migration From Infected Common Bean (Phaseolus vulgaris) Plants Through a Combination of Volatile and Surface Cues. Frontiers in Plant Science. 11, p. 613772. https://doi.org/10.3389/fpls.2020.613772

Novel use of PDMS tubing for in-soil capture of plant natural products

Vuts, J., Magalhaes, D. M., Morgana-Leal-Soares, A., Ratnayaka, A., Caulfield, J. C. and Birkett, M. A. 2020. Novel use of PDMS tubing for in-soil capture of plant natural products. Journal Of Chromatography B. 1161, p. 122451. https://doi.org/10.1016/j.jchromb.2020.122451

Inefficient weapon—the role of plant secondary metabolites in cotton defence against the boll weevil

Magalhaes, D., Borges, M., Laumann, R. A., Caulfield, J. C., Birkett, M. A. and Blassioli-Moraes, M. C. 2020. Inefficient weapon—the role of plant secondary metabolites in cotton defence against the boll weevil. Planta. 252, p. 94. https://doi.org/10.1007/s00425-020-03497-w

Identification and application of bacterial volatiles to attract a generalist aphid parasitoid from laboratory to greenhouse assays

Goelen, T., Vuts, J., Sobhy, I., Wackers, F., Caulfield, J. C., Birkett, M. A., Rediers, H., Jacquemyn, H. and Leivens, B. 2020. Identification and application of bacterial volatiles to attract a generalist aphid parasitoid from laboratory to greenhouse assays. Pest Management Science. https://doi.org/10.1002/ps.6102

Electrophysiologically and behaviourally active semiochemicals identified from bed bug refuge substrate

Birkett, M. A., Weeks, E. N. I., Logan, J. G., Caulfield, J. C., Gazan, S. A., Welham, S. J., Brugman, V. A., Pickett, J. A. and Cameron, M. M. 2020. Electrophysiologically and behaviourally active semiochemicals identified from bed bug refuge substrate. Scientific Reports. (10), p. article 4590. https://doi.org/10.1038/s41598-020-61368-6

Responses of the putative trachoma vector, Musca sorbens, to volatile semiochemicals from human faeces

Birkett, M. A., Robinson, A., Bristow, J., Holl, M. V., Makalo, P, Alemayehu, W., Bailey, R., McLeod, D., Caulfield, J. C., Sarah, V., Pickett, J. A., Dewhirst, S. Y., Chen Hussey, V., Woodcock, C. M., D'Alessandro, U., Last, A., Burton, M., Lindsay, S. and Logan, J. G. 2020. Responses of the putative trachoma vector, Musca sorbens, to volatile semiochemicals from human faeces. PLOS Neglected Tropical Diseases. 14 (3), p. e0007719. https://doi.org/10.1371/journal.pntd.0007719

Identification of semiochemicals from cowpea, Vigna unguiculata, for low-input management of the Legume Pod Borer, Maruca vitrata

Osei-Owusu, J., Vuts, J., Caulfield, J. C., Woodcock, C. M., Withall, D., Hooper, A. M., Osafo-Acquaah, S. and Birkett, M. A. 2020. Identification of semiochemicals from cowpea, Vigna unguiculata, for low-input management of the Legume Pod Borer, Maruca vitrata. Journal of Chemical Ecology. 46, pp. 288-298. https://doi.org/10.1007/s10886-020-01149-7

Sensing the Danger Signals: cis-Jasmone Reduces Aphid Performance on Potato and Modulates the Magnitude of Released Volatiles

Sobhy, I. S., Caulfield, J. C., Pickett, J. A. and Birkett, M. A. 2020. Sensing the Danger Signals: cis-Jasmone Reduces Aphid Performance on Potato and Modulates the Magnitude of Released Volatiles. Frontiers in Ecology and Evolution. 7, p. 499. https://doi.org/10.3389/fevo.2019.00499

Species-specific alterations in Anopheles mosquito olfactory responses caused by Plasmodium infection

Stanczyk, N. M., Brugman, V. A., Austin, V., Sanchez-Roman Teran, F., Gezan, S. A., Emery, M., Visser, T. M., Dessens, J. T., Stevens, W., Smallegange, R. C., Takken, W., Hurd, H., Caulfield, J. C., Birkett, M. A., Pickett, J. A. and Logan, J. G. 2019. Species-specific alterations in Anopheles mosquito olfactory responses caused by Plasmodium infection. Scientific Reports. 9 (1), p. 3396. https://doi.org/10.1038/s41598-019-40074-y

Identification of a non-host semiochemical from tick-resistant donkeys (Equus asinus) against Amblyomma sculptum ticks

Ferreira, L. L., Sarria, A. L. F., De Olivera Filho, J. G., De Olivera de Silva, F., Powers, S. J., Caulfield, J. C., Pickett, J. A., Birkett, M. A. and Borges, L. M. F. 2019. Identification of a non-host semiochemical from tick-resistant donkeys (Equus asinus) against Amblyomma sculptum ticks. Ticks and Tick-Borne Diseases. 10 (3), pp. 621-627. https://doi.org/10.1016/j.ttbdis.2019.02.006

Environmentally vulnerable noble chafers exhibit unusual pheromone-mediated behaviour

Harvey, D. J., Vuts, J., Hooper, A. M., Finch, P., Woodcock, C. M., Caulfield, J. C., Kadej, M., Smolis, A., Withall, D., Henshall, S., Pickett, J. A. and Birkett, M. A. 2018. Environmentally vulnerable noble chafers exhibit unusual pheromone-mediated behaviour. PLOS ONE. 13 (11), p. e0206526. https://doi.org/10.1371/journal.pone.0206526

The multitrophic nature of acute oak decline chemical ecology

Vuts, J., Sarria, A. L. F., Caulfield, J. C., Plummer, S., Denman, S. and Birkett, M. A. 2018. The multitrophic nature of acute oak decline chemical ecology. Forest Insects and their Allies Newsletter. 2018 (4), p. 2.

(2R,5S)‐Theaspirane Identified as the Kairomone for the Banana Weevil, Cosmopolites sordidus, from Attractive Senesced Leaves of the Host Banana, Musa spp.

Abagale, S. A., Woodcock, C. M., Hooper, A. M., Caulfield, J. C., Withall, D., Chamberlain, K., Acquaah, S. O., Van Emden, H., Braimah, H., Pickett, J. A. and Birkett, M. A. 2018. (2R,5S)‐Theaspirane Identified as the Kairomone for the Banana Weevil, Cosmopolites sordidus, from Attractive Senesced Leaves of the Host Banana, Musa spp. Chemistry-A European Journal. 24 (37), pp. 9217-9219. https://doi.org/10.1002/chem.201800315

Maize Chlorotic Mottle Virus Induces Changes in Host Plant Volatiles that Attract Vector Thrips Species

Mwando, N. L., Tamiru, A., Nyasani, J. O., Obonyo, M. A. O., Caulfield, J. C., Bruce, T. J. A. and Subramanian, S. 2018. Maize Chlorotic Mottle Virus Induces Changes in Host Plant Volatiles that Attract Vector Thrips Species. Journal of Chemical Ecology. 44 (7-8), pp. 681-689. https://doi.org/10.1007/s10886-018-0973-x

Plasmodium-associated changes in human odor attract mosquitoes

Robinson, A., Busula, A. O., Voets, M. A, Beshir, K. B., Caulfield, J. C., Powers, S. J., Verhulst, N. O., Winskill, P., Muwanguzi, J., Birkett, M. A., Smallegange, R. C., Masiga, D. K., Mukabana, W. R., Sauerwein, R. W., Sutherland, C. J., Bousema, T., Pickett, J. A., Takken, W., Logan, J. G. and De Boer, J. G. 2018. Plasmodium-associated changes in human odor attract mosquitoes. Proceedings of the National Academy of Sciences. 115 (18), pp. E4209-E4218. https://doi.org/10.1073/pnas.1721610115

Isolation and identification of floral attractants from a nectar plant for the dried bean beetle, Acanthoscelides obtectus (Coleoptera: Chrysomelidae, Bruchinae)

Vuts, J., Woodcock, C. M., Caulfield, J. C., Powers, S. J., Pickett, J. A. and Birkett, M. A. 2018. Isolation and identification of floral attractants from a nectar plant for the dried bean beetle, Acanthoscelides obtectus (Coleoptera: Chrysomelidae, Bruchinae). Pest Management Science. 74 (9), pp. 2069-2075. https://doi.org/10.1002/ps.4903

Conspecific and Heterogeneric Lacewings Respond to (Z)-4-Tridecene Identified from Chrysopa formosa (Neuroptera: Chrysopidae)

Koczor, S., Szentkiralyi, F., Vuts, J., Caulfield, J. C., Withall, D. M., Pickett, J. A., Birkett, M. A. and Toth, M. 2018. Conspecific and Heterogeneric Lacewings Respond to (Z)-4-Tridecene Identified from Chrysopa formosa (Neuroptera: Chrysopidae). Journal of Chemical Ecology. 44 (2), pp. 137-146. https://doi.org/10.1007/s10886-017-0920-2

Leaf volatile patterns of oak decline problems: opportunities for control via chemical ecology

Vuts, J., Caulfield, J. C., Plummer, S., Denman, S., Pickett, J. A. and Birkett, M. A. 2017. Leaf volatile patterns of oak decline problems: opportunities for control via chemical ecology. Forest Insects and their Allies Newsletter. 2017 (3), p. 2.

Odours of Plasmodium falciparum-infected participants influence mosquito-host interactions

De Boar, J. G., Robinson, A., Powers, S. J., Burgers, S. L. G. E., Caulfield, J. C., Birkett, M. A., Smallegange, R. C., Van Genderen, P. J. J., Bousema, T., Sauerwein, R. W., Pickett, J. A., Takken, W. and Logan, J. G. 2017. Odours of Plasmodium falciparum-infected participants influence mosquito-host interactions. Scientific Reports. 7 (1), p. 9283. https://doi.org/10.1038/s41598-017-08978-9

DIMBOA levels in hexaploid Brazilian wheat are not associated with antibiosis against the cereal aphids Rhopalosiphum padi and Sitobion avenae

Periera J. F., Sarria, A. L. F., Powers, S. J., Aradottir, G. I., Caulfield, J. C., Martin, J. L., Smart, L. E., Pickett, J. A., Birkett, M. A. and Pereira, P. V. R .S 2017. DIMBOA levels in hexaploid Brazilian wheat are not associated with antibiosis against the cereal aphids Rhopalosiphum padi and Sitobion avenae. Theoretical and Experimental Plant Physiology. 29 (2), pp. 61-75. https://doi.org/10.1007/s40626-017-0084-z

cis-jasmone elicits aphid-induced stress signalling in potatoes

Sobhy, I. S., Woodcock, C. M., Powers, S. J., Caulfield, J. C., Pickett, J. A. and Birkett, M. A. 2017. cis-jasmone elicits aphid-induced stress signalling in potatoes. Journal of Chemical Ecology. 43 (1), pp. 39-52. https://doi.org/10.1007/s10886-016-0805-9

Electrophysiological and behavioral responses of female African rice gall midge, Orseolia oryzivora Harris and Gagné, to host plant volatiles

Ogah, E. O., Smart, L. E., Woodcock, C. M., Caulfield, J. C., Birkett, M. A., Pickett, J. A., Nwilene, F. E. and Bruce, T. 2017. Electrophysiological and behavioral responses of female African rice gall midge, Orseolia oryzivora Harris and Gagné, to host plant volatiles. Journal of Chemical Ecology. 43 (1), pp. 13-16. https://doi.org/10.1007/s10886-016-0788-6

Biosynthesis of natural and novel C-glycosylflavones utilising recombinant Oryza sativa C-glycosyltransferase (OsCGT) and Desmodium incanum root proteins

Hao, B., Caulfield, J. C., Hamilton, M. L., Pickett, J. A., Midega, C. A. O., Khan, Z. R., Wang, J. and Hooper, A. M. 2016. Biosynthesis of natural and novel C-glycosylflavones utilising recombinant Oryza sativa C-glycosyltransferase (OsCGT) and Desmodium incanum root proteins. Phytochemistry. 125 (May 2016), pp. 73-87. https://doi.org/10.1016/j.phytochem.2016.02.013

Virus Infection of Plants Alters Pollinator Preference: A Payback for Susceptible Hosts?

Groen, S. C., Jiang, S. J., Murphy, A. M., Cunniffe, N. J., Westwood, J. H., Davey, M. P., Bruce, T. J. A., Caulfield, J. C., Furzer, O. J., Reed, A., Robinson, S. I., Miller, E., Davis, C. N., Pickett, J. A., Whitney, H. M., Glover, B. J. and Carr, J. P. 2016. Virus Infection of Plants Alters Pollinator Preference: A Payback for Susceptible Hosts? PLOS Pathogens. 12 (8). https://doi.org/10.1371/journal.ppat.1005790

Quantification of brown dog tick repellents, 2-hexanone and benzaldehyde, and release from tick-resistant beagles, Canis lupus familiaris.

De Oliveira Filho, J. G., Sarria, A. L. F., Ferreira, L. L., Caulfield, J. C., Powers, S. J., Pickett, J. A., De Leon, A. A., Birkett, M. A. and Borges, L. M. F. 2016. Quantification of brown dog tick repellents, 2-hexanone and benzaldehyde, and release from tick-resistant beagles, Canis lupus familiaris. Journal Of Chromatography B. 1022 (1 June 2016), pp. 64-69. https://doi.org/10.1016/j.jchromb.2016.03.014

Responses of the two-spotted oak buprestid, Agrilus biguttatus (Coleoptera:Buprestidae) to host tree volatiles

Vuts, J., Woodcock, C. M., Sumner, M. E., Caulfield, J. C., Reed, K., Inward, D. J. G., Leather, S. R., Pickett, J. A., Birkett, M. A. and Denman, S. 2016. Responses of the two-spotted oak buprestid, Agrilus biguttatus (Coleoptera:Buprestidae) to host tree volatiles. Pest Management Science. 72 (4), pp. 845-851. https://doi.org/10.1002/ps.4208

The first crop plant genetically engineered to release an insect pheromone for defence

Bruce, T. J. A., Aradottir, G. I., Smart, L. E., Martin, J. L., Caulfield, J. C., Doherty, A., Sparks, C. A., Woodcock, C. M., Birkett, M. A., Napier, J. A., Jones, H. D. and Pickett, J. A. 2015. The first crop plant genetically engineered to release an insect pheromone for defence. Scientific Reports. 5, p. 11183. https://doi.org/10.1038/srep11183

Responses of parasitoids to volatiles induced by Chilo partellus oviposition on teosinte, a wild ancestor of maize

Mutyambai, D. M., Bruce, T. J. A., Midega, C. A. O., Woodcock, C. M., Caulfield, J. C., Van Den Berg, J., Pickett, J. A. and Khan, Z. R. 2015. Responses of parasitoids to volatiles induced by Chilo partellus oviposition on teosinte, a wild ancestor of maize. Journal of Chemical Ecology. 41, pp. 323-329. https://doi.org/10.1007/s10886-015-0570-1

The biosynthesis of allelopathic di-C-glycosylflavones from the roots of Desmodium incanum (G. Mey) DC

Hao, B., Caulfield, J. C., Hamilton, M. L., Pickett, J. A., Midega, C. A. O., Khan, Z. R., Wang, J. R. and Hooper, A. M. 2015. The biosynthesis of allelopathic di-C-glycosylflavones from the roots of Desmodium incanum (G. Mey) DC. Organic and Biomolecular Chemistry. 13, pp. 11663-11673. https://doi.org/10.1039/c5ob01926e

Isolation and identification of Desmodium root exudates from drought tolerant species used as intercrops against Striga hermonthica

Hooper, A. M., Caulfield, J. C., Hao, B., Pickett, J. A., Midega, C. A. O. and Khan, Z. R. 2015. Isolation and identification of Desmodium root exudates from drought tolerant species used as intercrops against Striga hermonthica. Phytochemistry. 117, pp. 380-387. https://doi.org/10.1016/j.phytochem.2015.06.026

Pheromone bouquet of the dried bean beetle, Acanthoscelides obtectus (Col.: Chrysomelidae), now complete

Vuts, J., Francke, W., Mori, K., Zarbin, P. H. G., Hooper, A. M., Millar, J. G., Pickett, J. A., Toth, M., Chamberlain, K., Caulfield, J. C., Woodcock, C. M., Troger, A. G., Balintne Csonka, E. and Birkett, M. A. 2015. Pheromone bouquet of the dried bean beetle, Acanthoscelides obtectus (Col.: Chrysomelidae), now complete. European Journal Of Organic Chemistry. 22 (22), pp. 4843-4846. https://doi.org/10.1002/ejoc.201500196

Multiple roles of a male-specific compound in the sexual behavior of the dried bean beetle, Acanthoscelides obtectus

Vuts, J., Powers, S. J., Caulfield, J. C., Pickett, J. A. and Birkett, M. A. 2015. Multiple roles of a male-specific compound in the sexual behavior of the dried bean beetle, Acanthoscelides obtectus. Journal of Chemical Ecology. 41, pp. 287-293. https://doi.org/10.1007/s10886-015-0560-3

Development of a female attractant for the click beetle pest Agriotes brevis

Vuts, J., Furlan, L., Csonka, E. B., Woodcock, C. M., Caulfield, J. C., Mayon, P., Pickett, J. A., Birkett, M. A. and Toth, M. 2014. Development of a female attractant for the click beetle pest Agriotes brevis. Pest Management Science. 70 (4), pp. 610-614. https://doi.org/10.1002/ps.3589

Underground signals carried through common mycelial networks warn neighbouring plants of aphid attack

Babikova, Z., Gilbert, L., Bruce, T. J. A., Birkett, M. A., Caulfield, J. C., Woodcock, C. M., Pickett, J. A. and Johnson, D. 2013. Underground signals carried through common mycelial networks warn neighbouring plants of aphid attack. Ecology Letters. 16 (7), pp. 835-843. https://doi.org/10.1111/ele.12115

Priming of production in maize of volatile organic defence compounds by the natural plant activator cis- jasmone

Oluwafemi, S., Dewhirst, S. Y., Veyrat, N., Powers, S. J., Bruce, T. J. A., Caulfield, J. C., Pickett, J. A. and Birkett, M. A. 2013. Priming of production in maize of volatile organic defence compounds by the natural plant activator cis- jasmone. PLOS ONE. 8, p. e62299. https://doi.org/10.1371/journal.pone.0062299

Aphid antixenosis in cotton is activated by the natural plant defence elicitor cis- jasmone

Hegde, M., Oliveira, J. N., Da Costa, J. G., Loza-Reyes, E., Bleicher, E., Santana, A. E. G., Caulfield, J. C., Mayon, P., Dewhirst, S. Y., Bruce, T. J. A., Pickett, J. A. and Birkett, M. A. 2012. Aphid antixenosis in cotton is activated by the natural plant defence elicitor cis- jasmone. Phytochemistry. 78 (June), pp. 81-88. https://doi.org/10.1016/j.phytochem.2012.03.004

Semiochemicals from herbivory induced cotton plants enhance the foraging behaviour of the cotton boll weevil, Anthonomus grandis

Magalhaes, D. M., Borges, M., Laumann, R. A., Sujii, E. R., Mayon, P., Caulfield, J. C., Midega, C. A. O., Khan, Z. R., Pickett, J. A., Birkett, M. A. and Blassioli-Moraes, M. C. 2012. Semiochemicals from herbivory induced cotton plants enhance the foraging behaviour of the cotton boll weevil, Anthonomus grandis. Journal of Chemical Ecology. 38, pp. 1528-1538. https://doi.org/10.1007/s10886-012-0216-5

Isolation and identification of host cues from mango, Mangifera indica, that attract gravid female oriental fruit fly, Bactrocera dorsalis

Kamala Jayanthi, P. D., Woodcock, C. M., Caulfield, J. C., Birkett, M. A. and Bruce, T. J. A. 2012. Isolation and identification of host cues from mango, Mangifera indica, that attract gravid female oriental fruit fly, Bactrocera dorsalis. Journal of Chemical Ecology. 38, pp. 361-369. https://doi.org/10.1007/s10886-012-0093-y

Elucidation of the biosynthesis of the di-C- glycosylflavone isoschaftoside, an allelopathic component from Desmodium spp. that inhibits Striga spp. development

Hamilton, M. L., Kuate, S. P., Brazier-Hicks, M., Caulfield, J. C., Rose, R., Edwards, R., Torto, B., Pickett, J. A. and Hooper, A. M. 2012. Elucidation of the biosynthesis of the di-C- glycosylflavone isoschaftoside, an allelopathic component from Desmodium spp. that inhibits Striga spp. development. Phytochemistry. 84, pp. 169-176. https://doi.org/10.1016/j.phytochem.2012.08.005

Fast and efficient microwave-assisted synthesis of functionalized peptoids via Ugi reactions

Barreto, A. De F. S., Vercillo, O. E., Birkett, M. A., Caulfield, J. C., Wessjohann, L. A. and Andrade, C. K. Z. 2011. Fast and efficient microwave-assisted synthesis of functionalized peptoids via Ugi reactions. Organic and Biomolecular Chemistry. 9, pp. 5024-5027. https://doi.org/10.1039/C1OB05471F

Maize landraces recruit egg and larval parasitoids in response to egg deposition by a herbivore

Tamiru, A., Bruce, T. J. A., Woodcock, C. M., Caulfield, J. C., Midega, C. A. O., Ogol, C. K. P. O., Mayon, P., Birkett, M. A., Pickett, J. A. and Khan, Z. R. 2011. Maize landraces recruit egg and larval parasitoids in response to egg deposition by a herbivore. Ecology Letters. 14 (11), pp. 1075-1083. https://doi.org/10.1111/j.1461-0248.2011.01674.x

Semiochemicals used in host location by the coffee berry borer, Hypothenemus hampei

Mendesil, E. , Bruce, T. J. A., Woodcock, C. M., Caulfield, J. C., Seyoum, E. and Pickett, J. A. 2009. Semiochemicals used in host location by the coffee berry borer, Hypothenemus hampei. Journal of Chemical Ecology. 35, pp. 944-950. https://doi.org/10.1007/s10886-009-9685-6

C-glucosylflavonoid biosynthesis from 2-hydroxynaringenin by Desmodium uncinatum (Jacq.) (Fabaceae)

Hamilton, M. L., Caulfield, J. C., Pickett, J. A. and Hooper, A. M. 2009. C-glucosylflavonoid biosynthesis from 2-hydroxynaringenin by Desmodium uncinatum (Jacq.) (Fabaceae). Tetrahedron Letters. 50, pp. 5656-5659. https://doi.org/10.1016/j.tetlet.2009.07.118

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