The manifesto published ahead of next month’s Scottish Parliament election pledges to “undertake the necessary feasibility work to allow the Borders railway to be extended” as well as a commitment to explore the potential merits of new stations and services on the South Western line.
The manifesto also promises a continuous programme of improvements for the A75 and A77, and the development of better freight facilities, especially to support the timber industry in the area.
There are plans to establish a National Institute for Remote and Rural Medicine and better support the farming sector.
Ms Harper, who is the SNP candidate for Galloway and West Dumfries, said: “The establishment of a National Institute for Remote and Rural Medicine, could address the historic cancer pathway issues people have faced for years.
“The commitment to a continuous programme of improvements and upgrades to the A75 and A77 is ambitious and welcome and will improve the attractiveness of our region to people and business.
"We do currently have a climate emergency, and I therefore welcome the commitments to improving our regions rail services and to re-establishing the Dumfries – Stranraer rail link.
"The SNP will continue to stand up for our farmers and rural Scotland too, as I have done through successfully taking a Bill through Parliament to strengthen the law on attacks on livestock.”