VATICAN CITY — A summit of Roman Catholic bishops meeting at the Vatican recommended on Saturday that Pope Francis allow the ordination of married men as priests in the Amazon region, which would lift a roughly 1,000-year-old restriction and potentially revolutionize the priesthood.

It is the first time a grouping of bishops convened by a pope has endorsed such a historic change to the tradition of a celibate priesthood. The proposal is limited to remote areas of South America where there is a scarcity of priests but could set a precedent for easing the restriction on married priests throughout the world.

If Francis, who has already signaled an openness on the issue, accepts the bishops’ recommendation, he will turn the remote areas of the Amazon region into a laboratory for a Catholic Church looking to the global south for its future, with married priests and indigenous rites mixing with traditional liturgy.

The pope is expected to respond to the proposals by the end of this year.

[Update: In a victory for conservative forces, Pope Francis has set aside a proposal on married priests.]