Ana Pérez-Sierra, PhD

Head of Tree Health Diagnostic and Advisory ServiceAna Perez-Sierra


Tel: +44 (0)300 067 5600
Tel direct: +44 (0)300 067 5716
Fax: +44 (0)1420 23653

Forest Research
Alice Holt Lodge
Surrey GU10 4LH

Ana Pérez-Sierra joined the Forest Research in 2013. Since 1993 she has been working on the diagnosis of fungal plant diseases. From 1995 to 2003 she worked as a Plant Pathologist at the Royal Horticultural Society, Wisley Gardens, Surrey (UK).

From 2004 to 2013 she was the Coordinator of the Spanish Reference Laboratory for the Identification of Plant Pathogenic Fungi under the authority of Spanish Ministry of Agriculture, Food and Rural Environment. She obtained her PhD at Birkbeck, University of London, studying systematics, diagnostics and epidemiology of the fungal genus Armillaria.

Current role

Head of Tree Health Diagnostic and Advisory Service

To provide an effective, efficient and impartial disease diagnostic and advisory service on tree health.

Current programmes

Advisory and Extension

Other affiliations and responsibilities:

  • Member of the Spanish Society for Plant Pathology
  • Member of the Spanish Arboricultural Association

Main recent publications

Pérez-Sierra A., Gorton C., Lewis A., Kalantarzadeh M.,  Sancisi-Frey S.,  Brown A.V., Hendry S. 2015. First report of shoot blight caused by Sirococcus tsugae on Atlantic cedar (Cedrus atlantica) in Britain.

Perez-Sierra A, Kalantarzadeh M, Sancisi-Frey S, Brasier CM, 2015. Phytophthora siskiyouensis causing stem lesions and cankers on Alnus incana. New Disease Reports 31, 17.

Català, S., Pérez-Sierra, A., Abad-Campos, P. (2015). The use of genus-specific amplicon pyrosequencing to assess Phytophthora species diversity using eDNA from soil and water in northern Spain. PLoS ONE 10(3): e0119311. doi:10.1371/journal.pone.0119311.

Berbegal M., Landeras E., Sanchez D., Abad-Campos P., Perez-Sierra A., Armengol J.  2015. Evaluation of Pinus radiata seed treatments to control Fusarium circinatum: effects on seed emergence and disease incidence. Forest Pathology  doi: 10.1111/efp.12204

Redondo M.A., Perez-Sierra A., Abad-Campos P., Torres L., Solla A., Reig-Armiñana J., Garcia-Breijo F. 2015.  Histology of Quercus ilex roots during infection by Phytophthora cinnamomi. Trees DOI 10.1007/s00468-015-1275-3

Scanu B., Linaldeddu B.T., Perez-Sierra A., Deidda A.,  Franceschini A. (2014). Phytophthora ilicis as a leaf and stem pathogen of Ilex aquifolium in Mediterranean islands. Phytopathologia Mediterranea 53 (3): 480−490.

Henricot, B., Pérez Sierra, A. and Jung, T. (2014). Phytophthora pachypleura sp. nov., a new species causing root rot of Aucuba japonica and other ornamentals in the United Kingdom. Plant Pathology Doi: 10.1111/ppa.12194.

Berbegal, M., López-Co rtés, I., Salazar, D., Gramaje, D., Pérez Sierra, A., García-JiméneJ. z, and Armengol, J. (2014).  First report of Alternaria black spot of pomegranate caused by Alternaria alternata in Spain. Plant Disease 98 (5), 689.

Abad Z.G., Abad J.A., Cacciola S.O., Pane A., Faedda R., Moralejo E.,  Pérez-Sierra A.,Abad-Campos P., Alvarez-Bernaola L.A., Bakonyi J., Józsa A., Herrero M.A., Burgess T.I., Cunnington J.H., Smith I.W., Balci Y., Blomquist  C., Henricot B., Denton G., Spies C., Mcleod A., Belbahri L., Cooke  D., Kageyama K., Uematsu S., Kurbetli I. and Degirmenci K. 2014. Phytophthora niederhauserii sp. nov., a polyphagous species associated with ornamentals, fruit trees and native plants in 13 countries.  Mycologia, 106 (3): 431-447. DOI: 10.3852/12-119

Gramaje, D., León, M., Pérez-Sierra, A., Burgess, T. and Armengol, J. (2014). New Phaeoacremonium species isolated from sandalwood trees in Western Australia. IMA Fungus 5 (1), 67–77.

Pérez Sierra, A., López-García, C., León, M., García-Jiménez, J., Abad-Campos, P. and Jung, T. (2013). Previously unrecorded low temperature Phytophthora species associated with Quercus decline in a Mediterranean forest in Eastern Spain. Forest Pathology 43 (4), 331-339.

Pérez Sierra, A. and Jung T. (2013). Phytophthora in woody ornamental nurseries. In: Phytophthora a global perspective. CABI (ISBN 9781780640938) pp. 166- 177.

Berbegal, M., Pérez-Sierra, A., Armengol, J. and Grünwald, N.J. (2013). Evidence for multiple introductions and clonality in Spanish populations of Fusarium circinatum. Phytopathology 103 (8), 851-861.

Pérez Sierra, A., Mora-Sala, B., León, M., García-Jiménez, J. and Abad-Campos, P. (2012). Enfermedades causadas por Phytophthora en viveros de plantas ornamentales. Boletín Sanidad Vegetal Plagas 1, 143 - 156.

Agustí Brisach, C., Pérez-Sierra, A., Armengol, J., García-Jiménez, J. and Berbegal M. (2012). Efficacy of hot water treatment to reduce the incidence of Fusarium circinatum on Pinus radiata seeds. Forestry 85 (5), 629-635.

Berbegal, M., Pérez-Sierra, A. and Armengol, J. (2012). First Report of Sirosporium celtidis causing a foliar disease of European Hackberry in Spain. Plant Disease 96, 1826.

Gramaje, D., Agustí-Brisach, C., Pérez-Sierra, A., Moralejo, E., Olmo, D., Mostert, L., Damm, U. and Armengol, J. (2012). Fungal trunk pathogens associated with wood decay of almond trees in Mallorca (Spain). Persoonia 28, 1-13.

Agustí Brisach, C., Pérez-Sierra, A., García-Figueres, F., Montón, C. and Armengol, J. (2011). First report of damping-off caused by Cylindrocarpon pauciseptatum on Pinus radiata in Spain. Plant Disease 95, 874.

Pérez Sierra, A. Álvarez, L.A., Vercauteren, A., Heungens K. and Abad-Campos, P. (2011). Genetic diversity, sensitivity to phenylamide fungicides and aggressiveness of Phytophthora ramorum on Camellia, Rhododendron and Viburnum plants in Spain. Plant Pathology 60 (6), 1069–1076.

Pérez Sierra, A., León, M., Álvarez, L.A., Alaniz, S., Berbegal, M., García-Jiménez, J. and Abad-Campos, P. (2010). Outbreak of a new Phytophthora sp. associated with severe decline of almond trees in Eastern Spain. Plant Disease 94, 534-541.

Corcobado, T., Cubera, E., Pérez-Sierra, A., Jung, T. and Solla, A. (2010). First report of Phytophthora gonapodyides involved in the decline of Quercus ilex in xeric conditions in Spain. Plant Pathology 22, 33.

Solla, A., Pérez-Sierra, A., Corcobado, T., Haque, MM., Diez, J.J. and Jung, T. (2010). Phytophthora alni on Alnus glutinosa reported for the first time in Spain. Plant Pathology 59 (4), 798.

Hernández Hernández, J., Espino, A., Rodríguez-Rodríguez, J.M., Pérez-Sierra, A., León, M., Abad_Campos, P. and Armengol, J. (2010). Survey of diseases caused by Fusarium spp. on palm trees in the Canary Islands. Phytopatologia Mediterreanea 49, 84-88.

Moralejo, A., Pérez-Sierra, A., Álvarez, L.A., Belbahri, L., Lefort, F. and  Descals E. (2009). Multiple alien Phytophthora taxa discovered on diseased ornamental plants in Spain. Plant Pathology 58, 100-110.

Armengol, J., Gramaje, D., Pérez-Sierra, A., Landeras, E., Alzaguray, R., Martos, S. and  Luque, J. (2008). First report of canker disease caused by Neofusicoccum australe on eucalyptus and pistachio in Spain. Plant Disease 92, 980.

Gramaje, D., Alaniz, S., Pérez-Sierra, A., Abad-Campos, P., García-Jiménez, J. and Armengol, J. (2008). First report of Phaeoacremonium scolyti causing Petri disease of grapevine in Spain. Plant Disease 92, 836.

Pérez Sierra, A., Landeras, E., León, M., Berbegal, M., Armengol,J. and  García-Jiménez, J. (2007). Characterization of Fusarium circinatum from Pinus spp. in Northern Spain. Mycological Research 111, 832 – 839.

Álvarez, L.A., Pérez-Sierra, A. and García-Jiménez, J. (2007). Bleeding canker on Mesquite in Peru caused by Phytophthora syringae. Plant Disease 91, 226.

Álvarez, L.A., Pérez-Sierra, A., Armengol, J. and García-Jiménez, J. (2007). Characterization of Phytophthora nicotianae isolates causing collar and root rot of common lavender and rosemary plants in Spain. Journal of Plant Pathology 89, 251 - 254.

Gramaje, D., Alaniz, S., Pérez-Sierra, A., Abad-Campos, P., García-Jiménez, J. and Armengol, J. (2007). First report of Phaeoacremonium mortoniae causing Petri disease of grapevine in Spain. Plant Disease 91, 1296.

Álvarez, L.A., Pérez-Sierra, A., Landeras, E., García-Jiménez, J. and  Abad-Campos, P. (2007). First report of leaf spot and twig blight of Rhododendron spp. caused by Phytophthora hibernalis in Spain. Plant Disease 91, 909.

Pérez Sierra, A.,  Álvarez, L.A., León, M., Abad-Campos, P., Armengol, J. and García-Jiménez, J. (2007). First report of leaf spot, blight and stem lesions caused by Cylindrocladium pauciramosum on Callistemon in Spain. Plant Disease 91, 1057.

Pérez Sierra, A., Álvarez, L.A., Henricot, B., García-Jiménez, J. and Armengol, J. (2006). Cylindrocladium pauciramosum causes root and collar rot of Polygala myrtifolia in Spain. Plant Pathology 55, 298.

Álvarez, L.A., Pérez-Sierra, A., León, M., Armengol, J., García-Jiménez, J. (2006). Lavander cotton (Santolina chamaecyparissus) root rot: A new host of Phytophthora tentaculata detected in Spain. Plant Disease 90, 523.

Álvarez, L.A., Armengol, J., Pérez-Sierra, A., León, M., Abad, P., Vicent, A. and García-Jiménez, J. (2005). First report of Phoma exigua var. heteromorpha causing oleander dieback in Spain. Plant Disease 89, 775.

Landeras, E., García, P., Fernández, Y., Braña, M., Fernández-Alonso, O., Pérez-Sierra A., León, M., Méndez-Lodos, S., Abad-Campos, P., Berbegal, M., Beltrán, C., García-Jiménez, J. and Armengol, J., (2005). Outbreak of pitch canker caused by Fusarium circinatum on Pinus spp. in Northern Spain. Plant Disease 89, 1015.

Pérez Sierra, A. and Gorton, C. (2005). Survival of honey fungus in wood and bark chip mulches. The Plantsman 4, 204-207.

Pérez Sierra, A., Guillaumin, J-J., Spooner, B. and Bridge, P. (2004). Characterization of Armillaria heimii from Africa. Plant Pathology 53, 220-230.

Henricot, B., Waghorn, I., Denton, G., Pérez-Sierra, A. (2004). First report of fruit rot caused by Phytophthora syringae on Pyracantha in the UK. Plant Pathology 53, 805.