Taiga Forest Health

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Assay Development

The informative gene sets identified and validated in this project has been developed into real-time quantitative PCR assays and integrated into genomics-based pathogen detection and monitoring tools.

A PCR assay is a reaction that amplifies a targeted DNA sequence by orders of magnitude to generate sufficient quantities for detection.Specific probes are designed to bind to the targeted sequences of pathogens. A positive signal is generated if the probe matches the sample DNA sequence in the reaction. A collection of assays will be put together strategically into an array. We are currently constructing 96 well and 384 well plates containing detection or diagnostic assays to form the array. These arrays can test a large number of targeted genes with a large number of samples and analysed simultaneously.

We currently have the following assays available for use. Please contact us if you are interested in these assays or should you wish to discuss on customizing an array.

 

Genera

Assay specific to – Species Name

Approach

Amylostereum

Amylostereum areolatum

SNP-based

Ceratocystis

Ceratocystis (C. coerulescens complex)

SNP-based

Ceratocystis polonica

SNP-based

Ceratocystis laricicola

SNP-based

Ceratocystis fujiensis

SNP-based

Ceratocystis fagacearum

SNP-based

Ceratocystis platani

SNP-based

Fusarium

Fusarium circinatum

SNP-based

Geosmithia

Geosmithia morbida

SNP-based

Gremmeniella

Gremmeniella abietina (EU race)

SNP-based

Heterobasidion

Heterobasidion annosum sensus lato

SNP-based

Heterobasidion irregulare

SNP-based

Heterobasidion occidentale

SNP-based

Hymenoscyphus

Chalara fraxinea

SNP-based

Lachnellula

Lachnellula willkommii

SNP-based

Marssonina

Marssonina brunnea

TAIGA – comparative genomics

Ophiostoma

Leptographium wageneri

SNP-based

Ophiostoma ulmi sensus lato

SNP-based

Ophiostoma ulmi sensus stricto

SNP-based

Ophiostoma novo-ulmi

SNP-based

Ophiostoma himal-ulmi

SNP-based

Phytophthora

Phytophthora quercina

SNP-based

Phytophthora cinnamomi

SNP-based

Phytophthora cinnamomi

TAIGA – comparative genomics

Phytophthora ramorum

TAIGA – comparative genomics

Phytophthora ramorum

SNP-based

P. ramorum NA1

TAIGA – comparative genomics

P. ramorum NA2

TAIGA – comparative genomics

P. ramorum EU1

TAIGA – comparative genomics

P. ramorum EU2

TAIGA – comparative genomics

Phytophthora lateralis

TAIGA – comparative genomics

P. lateralis + P. ramorum

TAIGA – comparative genomics

Phytophthora kernoviae

TAIGA – comparative genomics

Phytophthora pinifolia

TAIGA – comparative genomics

Pucciniales

Melampsora allii-populina (MAP)

TAIGA – comparative genomics

Melampsora pinitorqua (MP)

TAIGA – comparative genomics

Cronartium ribicola

TAIGA – comparative genomics

Cronartium comandrae

TAIGA – comparative genomics

Cronartium quercuum f. sp. fusiforme

TAIGA – comparative genomics

Endocronartium harknessii

TAIGA – comparative genomics

Rosellinia

Rosellinia necatrix

SNP-based

Sclerotinia

Sclerotinia pseudotuberosa

SNP-based

Xanthomonas

Xanthomonas populi

SNP-based

Venturia

Venturia nashicola

SNP-based



Our strategy is to develop chips for specific applications and customized assays.

We propose three types of Array diagnostics:

1) hierarchical detection assays- especially effective for P. ramorum and M. populorum

  • Targeting group specific, species-specific and pathogenic genes

2) strain genotyping assays,

3) multi-target detection assays

  • a TreeDisease detection Array chip, for testing the presence of the 50 most unwanted forest pathogens identified by our collaborators and end-users.

PCR array design