Summary Trott played an irresponsible shot to pull a ball from Johnson directly to Nathan Lyon.
BRISBANE, Australia (AP) - After spending three months trying to convince critics that the last Ashes series was much closer than it looked, Michael Clarke's Australian squad did everything they could to ram home the point against England on Saturday.
Resuming at 65-0 and with a 224-run lead, Australia got centuries from Clarke (113) and David Warner (124) to lift its total to 401-7 before declaring with a 560-run lead, leaving England's top order an hour to survive on day three.
Pacemen Ryan Harris and Mitchell Johnson, aided by a cooling breeze and gloomy, gathering clouds, dismissed opener Michael Carberry (0) and No. 3 Jonathan Trott (9) to have England reeling at 10-2.
Alastair Cook (11) and Kevin Pietersen (3) combined to help England reach stumps at 24-2, but it could have been much worse for the tourists.
Pietersen, playing his 100th test and apparently desperate to get off strike against Johnson, took off for a quick single and almost had Cook run-out with the total at 10.
Harris had almost instant success when Carberry blocked a ball that bounced onto his stumps with the total at one. Trott played an irresponsible shot to pull a ball from Johnson directly to Nathan Lyon.
There were shades of the first innings, when England lost six wickets for nine runs in 58 balls before eventually being skittled for 136, until Cook took control with some composed play in the last half hour of a day that certainly belonged to the Australians.
Clarke and Warner both started the series under pressure, and both responded emphatically in the second innings a the Gabba, where Australia hasn't lost a test in 25 years.
Clarke was out just before tea after scoring his 25th test century and after sharing partnerships of 158 with Warner and 52 with George Bailey (34) against a flagging England pace attack and two increasingly frustrated slow bowlers.
England has won the last three Ashes series and certainly isn't out of contention at the Gabba, although history is against Cook's team.
The biggest successful fourth-innings chase at the Gabba was Australia's 236-7 against the West Indies in 1951. And the West Indies' 418-7 against Australia in 2003 is the highest fourth-innings to win in more than 130 years of test cricket.
England scored 370 in the fourth innings of the 2006 test here but lost the game. In the corresponding test of the 2010 Ashes series, England scored 517-1 declared after giving up a first-innings lead in the drawn first test. Cook scored an unbeaten 235 in that innings, which set England on course to win the urn on Australian soil for the first time in 24 years.
Warner was a distraction in the 3-0 defeat in England in August, and is desperate to make amends.
He hit 13 boundaries and a giant driven six which clattered into the sight screen to reach 124, but was out three balls later trying to run a ball from Stuart Broad down to third man and instead feathered a catch to wicketkeeper Matt Prior.
The combative, 27-year-old left-hander lost his place for two tests on the last Ashes tour after a night club altercation with England batsman Joe Root and was later dropped from Australia's limited-overs squad for a tour of India due to a lack of form.
But he scored four centuries in domestic cricket to secure selection for this series and has cemented his opening spot with two assured innings. He batted with composure in the first innings until an ill-judged shot to Broad ended in dismissal on 49.
Clarke responded to concerns over his susceptibility to the short ball with consecutive boundaries against Broad, who was reintroduced to the attack almost as soon as the Australian captain got onto strike.
Clarke pulled a short ball for a boundary from near shoulder height and then hooked the next ball fine for another four to set up his innings. Broad had taken Clarke's wicket six times in recent Ashes tests, including in the first innings here.
But it was Clarke who got on top quickly on a ground where he has scored more than 1,000 test runs and averages above 100.
He faced 130 balls and struck 10 boundaries and a six before he was bowled by Graeme Swann the England spinner's first wicket of the series just before the tea interval.
Haddin continued with a run-a-ball 53, going with his 94 in the first innings, and Mitchell Johnson finished unbeaten on 39. Chris Tremlett had the best figures of the England bowlers in the second innings with 3-69 and Broad had 2-55, giving him eight for the match.
