Dr.ir. J. Helder

Update Persondata

• cell
• expression
• feeding
• gene
• genetic
• nematology
• phylogenetic
• potato
• root
• soil
• stress

Active as

Publications

(the most recent at the top)

Ecology and Evolution of Soil Nematode Chemotaxis

A rapid, sensitive and cost-efficient assay to estimate viability of potato cyst nematodes

Nematoden als indicator voor de waterkwaliteit

Soil biodiversity, biological indicators and soil ecosystem services-an overview of European approaches

SSU Ribosomal DNA-Based Monitoring of Nematode Assemblages Reveals Distinct Seasonal Fluctuations within Evolutionary Heterogeneous Feeding Guilds

All publications..

Enhanced publications

(the most recent at the top)

Doctoral Thesis: Phylogenetic relationships within the phylum Nematoda as revealed by ribosomal DNA, and their biological implications

Current research

(the most recent research is at the top)
Project leader	Revenues on project 04725: Development of a rapid, multiplex PCR-based test to assess the impact of soil pollution...
Co-supervisor	DNA barcoding-based monitoring in soil
Supervisor	GM Crop Impact Assessment on Soil Ecosystems by DNA Barcode-based Monitoring of Nematode Communities (ERGONema)
Supervisor	Simultaneous DNA barcode-based monitoring of bacterivorous nematodes and bacterial communities for ecological soil health assessment.

Completed research projects

(the most recent research is at the top)
Supervisor	Stress-based expression profiling in nematodes.
Project leader	Evolutionary relationships in the phylum Nematoda
Co-supervisor	Development of a molecular tool to type free-living and plant-parasitic nematode genera & the recovery of traints relevant to stress tolerance
Co-supervisor	Dissecting the signal-transduction pathway leading to syncytium formation by cyst nematodes: the role of auxin-induced ethylene biosynthesis
Co-supervisor	Analysis of the role of phytohormones in the induction of nematode feeding cells

All completed research..

Classification

A21000	Agriculture and horticulture
D21400	Genetics
D22100	Microbiology