The 23-year-old from Canberra triumphed in a time of 51.71sec at the Dubai Club for People of Determination.

It comes four days after he came out on top in the men's 100m T36 final in another world record of 11.72.

Turner now has five World Championships titles to his name having claimed three at London two years ago.

Today, he finished ahead of Russia’s former world holder Evgenii Shvetsov, the runner-up in 53.18, and New Zealand’s William Stedman, the third-place finisher in 54.28.

"I feel like I have done my job here," Turner, a former Para-football player, said.

"It’s huge.

"I am certainly very happy getting here.

"My whole stuff, my coach, squad mates - they are very happy.

"Next is Tokyo 2020. 

"Bring it on."

Today also saw Brazilian athletes set two world records thanks to the efforts of Cicero Valdiran Lins Nobre in the men’s javelin throw F57 and Elizabeth Rodrigues Gomes in the women's discus throw F53.

Lins Nobre won with a throw of 49.26 metres, with Iran's Amanolah Papi second on 47.80m and Syria's Mohamad Mohamad third on 46.01m.

A throw of 16.89m proved enough for Rodrigues Gomes to secure victory ahead of Ukrainians Iana Lebiedieva and Zoia Ovsii, who achieved 16.26m and 13.52m respectively.

Among the other winners today was South African rising star Ntando Mahlangu, who lifted his first senior world title with a time of 23.23 in the men's 200m T61 final.

Mahlangu, winner of four gold medals at the 2017 World Para Athletics Junior Championships in Nottwil in Switzerland, was joined on the podium by Great Britain's Richard Whitehead in 23.82 and Germany's Ali Lacin in 24.63.

There was also success for three-time Paralympic medallist Samwel Mushai Kimani as he defended his men's 5,000m T11 world title to give Kenya their first gold medal of Dubai 2019.

Kimani completed the race with a time of 15min 45.32sec, with the silver medal going to Russia’s Fedor Rudakov in 15:46.74 and bronze to Japan’s Kenya Karasawa in 15:48.21.

Capping off today's action was the first-ever universal 4x100m relay final as the United States took top honours in 46.94, ahead of China in 47.40 and Russia in 47.96.

A total of 44 world records have now been broken at Dubai 2019, surpassing the 34 that fell at London 2017.