The Ashes contest lived up to its billing of being too close to call on a fluctuating day at the Gabba. England's bowlers staged a spirited fightback before being quelled by a resurgent Michael Hussey, whose unbeaten 81 gave Australia the edge when bad light ended play.
The hosts lost four wickets during the afternoon session as James Anderson and Steven Finn produced fiery spells, but Hussey was joined by Brad Haddin and the sixth-wicket pair added 77 to leave Australia sensing a vital lead.
Australia 5 for 220 (Hussey 81*, Haddin 22*) trail England 260 by 40 runs