Sept 29 (Reuters) - Canada’s main stock index rebounded from a one-week low on Wednesday, led by industrial and consumer staple shares, although gains were limited by weakness in energy sectors. At 9:35 a.m. ET (13:35 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was up 23.76 points, or 0.12%, at 20,197.9. (Reporting by Amal S in Bengaluru; editing by Uttaresh.V) Our Standards: The Thomson Reuters Trust Principles.