Kagiso Rabada struck first for South Africa in the fifth over by inducing a drive by nightwatchman Toby Roland-Jones that was caught at cover.
Adding 102 runs to their overnight 260-6 and once again destroying the South Africa batting made it an excellent day for England, but it could have been even better if they had taken just some of the hard chances that came their way.
"Hopefully the batters can respond well because he showed us how you need to bat in Test match cricket", he said.
It had been a testing decision for Root to bat first after winning the toss.
The Manchester weather could still play a part over the final three days. South Africa reached lunch on 12 for 1 after four testing overs.
South Africa seamer Duanne Olivier on his side's day: "We really bowled well today, it's not like they ran away with the game at any stage". England struggled to get their partnerships going and did not manage big score. But then he edged to second slip off fast bowler Rabada. They were recovering well with the Cook-Westley stand before Keshav Maharaj scalped the former England skipper for 46. Cook was gone for 46 from 103 balls, an innings that nearly precisely represented both his career average (46.18) and strike rate (46.77).
Farbrace on Joe Root: "He just looks a quality player, he just looks as though every innings he's getting better and better". India then bundled out the home team for 291 with Angelo Mathews (83), Upul Tharanga (64) and Dilruwan Perera's making a swashbuckling unbeaten 92 that included 10 fours and four sixes. This time the executioner was Rabada, and in dramatic style. Westley will be disappointed not go on from a start of 29 runs from 88 balls as wicketkeeper de Kock picked up his 100th dismissal in just his 23rd Test match.
Di Resta impresses after diving into the deep end
Brundle is absent from this race after he was taken ill moments before the British Grand Prix a fortnight ago. "It's weird. Whatever happens to Di Resta in Sunday's Grand Prix, the 2017 Hungarian Grand Prix will not be one he forgets in a hurry.
Root reached the 5,000 landmark on Friday when he pushed Morne Morkel through extra-cover for three, moving from 45 to 48.
De Kock's crestfallen expression brought to mind that of Mark Boucher after dropping Nasser Hussain at Trent Bridge in 1998.
Suddenly balls that had been bearing into Malan's body were being dangled across his bows, and it was too much of a temptation for a man whose first worldwide innings had been 78 from 44 balls.
That didn't happen as in the penultimate over before tea Morkel drew the edge off Malan and he was caught at second slip by Faf du Plessis for 18.
Root- He remains the hottest pick as far as batsman are concerned.
Bairstow was 33 not out, having survived a contentious umpire review for a slip catch after initially being given out for just four. He is however yet to face a ball.
Honours conferred on active sportsmen don't always work out as their instigators might have intended - Sir Andy Murray, for one, hasn't had much to cheer about since being asked to arise in the New Year's Honours.