The tourists eked out a draw in the rain-interrupted third game in Brisbane despite another top-order failure, leaving the five-match series locked at 1-1 before the highly anticipated Boxing Day clash in Melbourne.
Jadeja helped India avoid the follow-on with a crucial 77 lower down the order in the first innings but said it was time for the specialists to fire.
"When you play outside India, especially in Australia or South Africa, it's important for the top order to make runs," Jadeja told reporters at the MCG on Saturday.
"If the top order doesn't make runs or give us a good start, then definitely there is more pressure and responsibility on the lower and middle order. Hopefully in this match they do well.
"As a team, we need them to perform. If everyone contributes in the batting unit, the team will do well."
Jadeja said India were pleased to be level at this stage with matches to come in Melbourne and Sydney, as they look to win a third successive series in Australia.
"The next two matches will be interesting," he added.
"If we win one match, we retain the series, we obviously won the last two series here. It's a good opportunity. This will be a crucial match."
Jadeja said he and India will miss the experience of spin spearhead Ravichandran Ashwin, who retired after the previous game, but said there is no shortage of talent to replace him.
"Hopefully we'll get another good bowler and all-rounder ... we have to move on," Jadeja said.
"It's a good opportunity now for any youngster who comes into the team to prove themselves at this level."
Jadeja's comments came as local media clashed with India team officials, unhappy they could not ask a question in English to the star allrounder.
India megastar Virat Kohli also clashed with media at Melbourne airport on Thursday, concerned his family may have also been filmed upon his arrival in the city.
