Joe Root said England must make brave calls and insisted the tourists are not scared of a challenge after they were put to the sword by Australia in the Ashes opener.

England were left licking their wounds after crumbling on day four of the first Test, which Australia comprehensively won by nine wickets at the Gabba.

Root's England – having opted not to play star bowling pair James Anderson and Stuart Broad – went from 220-2 to all out for 297 in Brisbane, where Australia swiftly chased down 20 runs for victory on Saturday.

After England's collapse, Root defended his decision to bat first against Australia.

"If we go about things the way we did on the last two tours we'll get the same result," Root said, with England having lost nine matches without winning on their last two tours to Australia.

"We have to be brave. I look back and think [batting] was the right decision.

"In terms of selection, we could have gone a different way [but] we wanted variety in our attack and ways of changing things."

"I'm not trying to make things up," said Root. "We're not far away."

Root and Dawid Malan had sparked renewed hope for England on Friday following a strong rear-guard display, but the revival was short-lived after losing eight wickets for just 77 runs across the opening session on Saturday.

England will now look ahead to the day-night Test in Adelaide, starting Thursday.

"We're a team that's always responded well to situations like this in the recent past," Root told BT Sport. "We're not scared of a challenge.

"We're not scared of fronting up to a difficult result, and we'll just have to make sure that we do exactly that again on this occasion."