DUBAI, Sept 1 (Reuters) - Qatar Islamic Bank, the Gulf state's largest sharia-compliant lender by assets, said on Thursday it had raised 2 billion riyals ($549 million) with an Additional Tier 1 perpetual sukuk issue.

The issue will enhance the bank's capital adequacy ratios and support its business growth, QIB said in a bourse statement without giving pricing or other details.

(Reporting by Hadeel Al Sayegh; Editing by Andrew Torchia) ((Hadeel.AlSayegh@thomsonreuters.com; +971566883310;))