Mr Black was speaking in the light of a report by the Breast Cancer Campaign which has revealed that government help for UK universities carrying out vital cancer research falls a long way short of meeting their costs.
"Cancer charities were given around £900m of public donations to fund university research across the UK last year.
"However, governments here in Wales and in Westminster pay an individual university's costs in hosting that research through the Charity Research Support Fund (CRSF). This government funding is 22% short of what is needed.
"Universities are unable to make up the costs from their own income, and many researchers have even been discouraged by their employers from applying for charity grants as a consequence.
"Unless more resources can be allocated to the CRSF, vital research could be in danger, with all that means for individual patients and for public health generally.
"That is why I am calling upon the Welsh Government to make an urgent commitment that it will give Welsh universities the money that they need to be able to host charity-funded cancer research."
