Brisbane: Australia were 273 for eight at the close after winning the toss on the opening day of the first Ashes Test against England at the Gabba on Thursday.
England's Stuart Broad completed his 11th five-wicket Test haul and broke Australia's biggest partnership in an emphatic riposte to booing fans.
Broad found Mitchell Johnson's middle stump late in the day to leave Australia on 246 for seven and end a vital century stand with Brad Haddin.
Brad Haddin was not out 78 with Ryan Harris on 4 after the hosts fought back from 132 for six.
Broad, vilified in Australia for not walking during the recent Ashes series in England, replied by removing all of Australia's top four batsman earlier in the day.
The hosts were tottering on 132 for six before Johnson (64) and Haddin (73 not out) revived their fortunes with a partnership of 114.
Australia would have been reasonably satisfied at 71-1 three balls before lunch but by the end of the second session Brad Haddin (24) and Mitchell Johnson (12) were fighting a desperate rearguard action.
Broad, cast as the pantomime villain in Australia after his failure to walk at Trent Bridge earlier this year, took five for 65.
Opener Chris Rogers was the first victim of the bounce Broad managed to generate from the Gabba track but it was the triple dismissals of Shane Watson, Michael Clarke and David Warner around lunch that shifted the momentum firmly England's way.
James Anderson pitched in to remove debutant George Bailey for three runs before Chris Tremlett, the third England quick, curtailed a promising innings from Steve Smith for 31.
Earlier, Stuart Broad silenced the Brisbane boos by taking the wickets of Chris Rogers and Shane Watson and sending Australia into lunch at 71 for two.
Broad, Australia's pantomime villain after his failure to walk at Trent Bridge earlier this year, dismissed Rogers for one with the first ball of his second over and returned three balls before the break to send Watson packing for 22.
Australia opener David Warner, though, was just eight runs away from a half century after a morning of good judgement and some aggressive strokeplay.
He will resume after the break on 42 with his scoreless captain Michael Clarke, who earlier won the toss and put his team into bat on a fine, sunny morning in Queensland.
Broad, branded a "smug Pommy cheat" on the front page of the local Courier-Mail newspaper on Thursday, was greeted by a chorus of boos when he came on to bowl in the second over.
His first ball was not quite the disaster that England's Steve Harmison experienced in 2006 but a no ball that Warner brutally pulled for four was certainly not the start he was looking for.
The first ball of his second over, though, came up high off the Brisbane track and when Rogers tried to ride the bounce, it flew off the splice of his bat to Ian Bell at gully.
Warner had earlier made a statement by hitting a four off the first delivery he faced from England's most feared bowler, James Anderson, while a well-executed uppercut off Broad for another boundary was another signal of his intent.
It was Watson who performed the welcoming rites for Chris Tremlett, preferred to Boyd Rankin and Steve Finn as England's third quick, by cutting the tall paceman's third ball to the boundary through point.
With the Australian pair looking reasonably comfortable, England skipper Alastair Cook brought on Graeme Swann but Warner, after blocking the spinner's first ball, smashed the second back over the Englishman's head for four.
Watson, whose preparations were disrupted by a hamstring injury, had always appeared less comfortable than his partner but looked like riding his luck until Broad again found some bounce in the last over before lunch.
The all-rounder pushed at a ball he could have left and edged it to Swann at second slip, swatting his bat in frustration at the manner and timing of his dismissal.
There was a slight scare for England earlier when Anderson cut up a couple of divots diving to stop a four close to the boundary.
Australia 8 for 273 (Haddin 78*, Johnson 64, Broad 5-65)