The experienced Hohns, who previously served as chief selector during a hugely successful period for Australia, currently sits on the four-man selection panel with Mark Waugh, coach Darren Lehmann, and now Chappell.
Cricket Australia chairman David Peever said Hohns had agreed to step up to ensure continuity while the search for a full-time replacement was carried out.
"It is vital that Australian cricket finds the best candidate for this role," said Peever.
"Trevor is highly experienced as a selector, and will ensure we place our best players on the field this summer while we seek a permanent replacement for Rod."
The retired wicketkeeper resigned yesterday with immediate effect after a run of five heavy Test defeats left the team humiliated and facing demands for heads to roll.
They crashed to a third-straight home series defeat to South Africa on Tuesday and now face being whitewashed in a home series for the first time in their history if they lose to the Proteas in Adelaide next week.
The last time Australia lost six straight Tests -- against India and England in 2013 -- the coach at the time, Mickey Arthur, was sacked.
Under his guidance, Australia won a record 16 successive Test matches and claimed the 1999 and 2003 World Cups in a golden era. He rejoined the selection panel in 2014.
He will be aided in trying to turn around the team's fortunes by former Test captain Chappell, who has been drafted in on a temporary basis ahead of a raft of changes expected for Adelaide.
Lehmann has declared that only four players -- captain Steve Smith, David Warner, Mitchell Starc and Josh Hazlewood -- were sure to keep their places after Australia's second demoralising collapse in the Hobart Test this week.
"His in-depth knowledge of up-and-coming talent in the Australian system will be invaluable," he said.
"Naturally the board and our senior executive are disappointed with the recent Test performances," Peever added.
"But we have every confidence that all those involved, including our coaching staff and team management, will do their utmost to turn that around."
Australia's team announcement for next week's third and final day-night Test has been delayed until Sunday so selectors can assess players' form in domestic Sheffield Shield matches.
"Obviously there will be changes at Adelaide. I can't say how many or who at this present point in time," Waugh said.
"But I can assure you we are looking at a lot of batsmen. And if someone sticks their hands up and gets a 150 or a 100 in this (Shield) round then it is really important.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
