New seed extract PCR (SE-PCR) test for corn salad (Valerianella locusta)

Publicationdate: 10 december 2025

Starting December 15th, we can test for the presence or absence of Acidovorax valerianellae on seed of corn salad.

Technique for rapid amplification of DNA

This is done with the help of pathogen-specific building blocks. The increase in DNA can be monitored digitally at any time. This makes it possible to faster and with more certainty confirm whether the seed samples actually contain the pathogen.

Acidovorax valerianellae

This bacterium causes black spots on the leaves of corn salad and can render them unusable. The disease can rapidly spread in high humidity and enclosed spaces, such as moist greenhouse conditions, and is seed transmitted.

Acidovorax valerianellae on seeds of corn salad

Test code: AVQ100

Sample size: 10.000 untreated seeds*

Test fee: € 279,50

Duration test: 4 days

* Hypochlorite treatment of seeds decreases the sensitivity of SE-PCR and could lead to false negative results. Other treatments such as HCl and TPS are compatible with SE-PCR.

For basic fees see price list.

Naktuinbouw Laboratories supports sector

To support the sector, Naktuinbouw Laboratories continues to develop new tests that can support diagnoses on plants and seeds with symptoms or just checking for and guaranteeing absence from certain plant pathogens.

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