ROME, June 12 (Reuters) - Italy's Prime Minister Giorgia Meloni and South Korean President Lee Jae Myung on Friday pledged to deepen bilateral ties, signing memorandums spanning technology and development cooperation.

o The leaders discussed closer cooperation in semiconductors and high-tech sectors including artificial intelligence, space, automotive and energy.

o MOUs also covered small and medium-sized enterprises and cooperation in the social economy.

o The countries signed a strategic action plan that included an aspiration to reform the U.N. Security Council to make it more representative and effective.

o The leaders also discussed international issues, reaffirming their commitment to Indo-Pacific stability and efforts to reopen the Strait of Hormuz.

o Meloni and Lee are due to meet business leaders later on Friday, including Samsung Electronics Chairman Jay Y. Lee, Fincantieri Chairman Biagio Mazzotta and Ferrari CEO Benedetto Vigna.($1 = 0.8648 euros)

(Reporting by Angelo Amante in Rome and Joyce Lee in Seoul; Editing by Alison Williams)