New disease reports

New disease reports

Lead scientist

Dr Béatrice Henricot

Partners

Central Science Laboratory, Dr Roger Cook and John Scrace, plant pathologist consultants

Start date

2000

End date

2009

Keywords

plant health, plant pathogen introduction, host range, new pathogens, new disease

Benefits to gardeners

The project raises awareness about the spread of new pathogens to the UK or provides information about the change in the host range of pathogens already present in the country.

The problem

The primary mode of introducing new plant pathogens in the country is by the movement of plants or plant products through human activities. The problem of introducing non-native pathogens has existed for more than a century.

Other factors that lead to the discovery of new diseases include changes in the genetic structure of plant pathogen populations, which help overcoming plant resistance, but also finding new hosts. New host range for existing pathogens can also arise from the import and the propagation of non-native plants which have never been in contact with native pathogens.
 

Approach

The method to report new diseases include a complete description of symptoms, the host(s) involved, when the disease was observed, the geographic location where samples that were used in the study were collected or received, the morphological description of the organism associated with the symptoms, DNA analysis to support the pathogen identification, the proof of pathogenicity (Koch’s postulates) if the organism is not obligate.

Further information

Read more on impatiens downy mildew

Read the online feature and biogeography

Read about the identification of Catalpa powdery mildews in the UK

Read about the identification of powdery mildew on Wisteria

Read the Phytophthora survey

Read about Pythium, a garden pathogenwww.bspp.org.uk/publications/new-disease-reports/ndr.php
 

References

Cook R TA, Henricot B and Beales P (2006). First record of Neoerysiphe galeopsidis on Acanthus spinosis in the UK. Plant Pathology 55, 575
Find out more

Cook R T A, Henricot B and Kiss L (2004). First record of Erysiphe elevata on Catalpa bignonioides in the UK. Plant Pathology 53, 807.
Find out more

Denton G and Henricot B (2006). First report of powdery mildew on Deutzia spp. in the UK. Plant Pathology 56, 353.
Read the report

Denton J, Henricot B, Denton G, Barnes A V and Beales P A (2008). Phloeosporella ceanothi causing leaf spot and dieback on Ceanothus in the UK. Plant Pathology 57(4):782
Read the report

Occurrence of powdery mildew (Erysiphe sp.) on Echeveria spp., Crassula spp., Cotyledon and Dudleya in the UK. Plant Pathology 57(4):779.
Read the report

Henricot, B and Cook R T A (2008). New report of a powdery mildew on Wisteria in the UK. Plant Pathology 57(2):374
Read the report

Henricot B, Denton G and Lane C (2007). First report of Puccinia heucherae on Heuchera spp.in the UK. Plant Pathology 56, 352.
Read the report

Henricot B and Gorton C (2005). Plant Pathogens on the move. Microbiology Today 32: 100.

Henricot B and Denton G (2005) First record of the rust Puccinia lagenophorae Cooke on Emilia spp. in the UK. Plant Pathology 54, 242.
Read the report

Henricot B and Prior C (2004). Phytophthora ramorum, the cause of sudden oak death or ramorum leaf blight and dieback. Mycologist 18 (4): 151-156.

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

Henricot B and Beales P (2003) First record of Cylindrocladium pauciramosum on myrtle (Myrtus communis L.) in Portugal. Plant Pathology 52, 420.
Read the report

Henricot B, Pérez Sierra A and Prior C (2000). A new blight disease on Buxus in the UK caused by the fungus Cylindrocladium. Plant Pathology 49, 805.
Read the report

Lane C R, Beales P A, Henricot B and Holden A (2006) First record of Cylindrocladium pauciramosum on Ceanothus in the UK. Plant Pathology 55, 582
Read the report 

Lane C R, Beales P A, O’Neill T M, McPherson G M, Finlay A R, David J, Constantinescu O and Henricot B (2004) First report of Impatiens downy mildew (Plasmopara obducens) in the UK. Plant Pathology 54, 243.
Read the report

Pérez Sierra A, Álvarez L A, Henricot B, García Jiménez J and Armengol J (2005). Cylindrocladium pauciramosum causes root and collar rot of Polygala myrtifolia L. in Spain. Plant Pathology 55, 298.
Read the report

Henricot B, Denton G, Denton J, Scrace J and Spooner B (2008) First report of Albugo trianthemae on Delosperma and Lampranthus in the UK (submitted)

Henricot B, Gorton C, Denton J and Denton G (2008) Pseudocercospora cladosporioides, the cause of leaf spot on olive, a new pathogen to the UK (submitted)

Henricot B, Denton G, Denton J, Scrace J and Spooner B (2009) First report of Albugo trianthemae on Delosperma and Lampranthus in the UK Plant Pathology 58, 803
Read the report

Henricot B, Gorton C, Denton J and Denton G (2009) Pseudocercospora cladosporioides, the cause of leaf spot on olive, a new pathogen to the UK Plant Pathology 58 , 803
Read the report