Although the line near to Kamo Station had not been electrified during the era of JNR, the electrification of the section between Kizu Station and Kamo Station was completed in March 1988, the year following the inauguration of JR West, and the section between Minatomachi Station (JR Nanba Station) and Kamo Station started to be called by the nickname of the Yamatoji Line.
国鉄時代まで加茂駅付近は非電化のままであったが、JR西日本となった翌年の1988年3月、木津駅から加茂駅までの電化が完成し、同時に湊町駅（のちのJR難波駅）から加茂駅までを大和路線の愛称で呼称することとなった。