TOKYO, June 15 (Reuters) - Japan's government and central bank will act to stop the yen's decline if it depreciates to the 145 per U.S. dollar level, more than half of economists polled by Reuters said. Fifteen of 28 economists (54%) said the government and the BOJ will take steps such as issuing a warning or intervening into the currency market once the yen weakens beyond 145 per greenback, the June 8-13 poll found. In a separate question on the weak yen's impact on BOJ policy, nine economists (31%) said the central bank's decisions could be swayed by a yen depreciation beyond 145 per dollar. In the poll, all but one - JP Morgan - out of 28 economists corroborated the view, citing an improved bond market functionality and Governor Kazuo Ueda's accommodative remarks so far. BOJ's Ueda has said an end to easy policy would depend on the economy achieving 2% inflation coupled with pay growth.

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Persons: Harumi Taguchi, Morgan, Kazuo Ueda's accommodative, Hiroshi Watanabe, BOJ's Ueda, Satoshi Sugiyama, Kantaro Komiya, Veronica Khongwir, Anant Chandak, Christian Schmollinger Organizations: Reuters, Bank of Japan, P, Financial Services Agency, Sony Financial Group, Thomson Locations: TOKYO