India, Sept. 19 -- Shapoorji Mistry, the chairperson of the Shapoorji Pallonji Group, urged all Tata Trustees to back the listing of Tata Sons Pvt. Ltd., saying that could also pave the way for a deeper relationship between the two business houses.

The SP Group chair's comments come after Tata Trusts, led by Mistry's brother-in-law Noel Tata, vehemently opposed a Tata Sons listing. For the debt-laden SP Group, the listing would unlock value for its minority stake in the Tata group holding company.

"I would like to see Tata Sons evolve into a modern, globally respected and publicly responsible holding institution," Mistry said in a statement on Friday. "I therefore appeal to every section of the Tata group-individual trustees, Tata Sons,...