John Caulfield

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

Research outputs

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. pp. 1-11.

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.

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.

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.

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.

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.

(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.

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 of the United States of America - PNAS. 115 (18), pp. E4209-E4218.

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.

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.

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

De Boer, 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.

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.

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, p. 9283.

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.

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.

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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