Former Fianna Fáil minister Martin O'Donoghue has died at the age of 85.

He served as a TD and Senator and was one of six TDs to be appointed minister on their first day in the Dáil.

Mr O'Donoghue was elected to Dáil Éireann as a TD in the 1977 general election for Dublin's Dún Laoghaire constituency. 

He was chief author of the election manifesto which saw Fianna Fáil achieve an unprecedented 20-seat majority. 

Mr O'Donoghue was immediately appointed minister for economic planning and development. In 1979, Charles Haughey became Taoiseach and Mr O'Donoghue's ministerial position was abolished.

In 1982 he was returned to Cabinet as minister for education.

He resigned from the government in October 1982, when he refused to support Mr Haughey in a leadership challenge, and in November 1982 lost he lost his Dáil seat at the general election.

Mr O'Donoghue entered Seanad Éireann after losing his Dáil seat. He remained in the Seanad until 1987.

Later he left Fianna Fáil, becoming a supporter of the Progressive Democrats.

He was educated in Crumlin and worked as a waiter in Dublin, becoming a mature student at Trinity College, Dublin and being awarded a PhD in economics by the University of Dublin.

After leaving politics, he returned to academia until his retirement in 1995.

Fianna Fáil leader Micheál Martin has paid tribute to the former minister following his death, saying he was "deeply saddened".

Mr Martin said Mr O'Donoghue was a committed public representative who had a long and distinguished career in national politics.