TOKYO (Kyodo) -- Tokyo stocks ended mixed on Wednesday, as a cautious mood prevailed before U.S. President Donald Trump is expected to announce reciprocal tariffs that could lead to a trade war.

The 225-issue Nikkei Stock Average ended up 101.39 points, or 0.28 percent, from Tuesday at 35,725.87. The broader Topix index finished 11.44 points, or 0.43 percent, lower at 2,650.29.

On the top-tier Prime Market, gainers were led by machinery and transportation equipment issues, while farm and fishery, and land transportation shares were the main decliners.

The U.S. dollar mostly remained in the upper 149 yen range in Tokyo as traders took a wait-and-see approach ahead of Trump's announcement on Wednesday regarding details of the reciprocal tariffs, dealers said.

At 5 p.m., the dollar fetched 149.65-67 yen compared with 149.58-68 yen in New York and 149.62-64 yen in Tokyo at 5 p.m. Tuesday.

The euro was quoted at $1.0791-0792 and 161.49-53 yen against $1.0787-0797 and 161.44-54 yen in New York and $1.0800-0802 and 161.60-64 yen in Tokyo late Tuesday afternoon.

The yield on the benchmark 10-year Japanese government bond ended at 1.470 percent, down 0.030 percentage point from Tuesday's close, as the debt was bought following a decline in U.S. Treasury yields.

On the stock market, the Nikkei benchmark gained slightly, led by heavyweight chip issues following advances with their U.S. counterparts on the Nasdaq index.

Some auto issues also helped the key index stay afloat, rebounding from recent plunges, although concern lingered over an additional 25 percent tariff set to be imposed as planned on Thursday on all cars made outside the United States, brokers said.

However, the market was weighed down by wariness about the U.S. reciprocal levies and retaliatory steps that other countries could take, brokers said.

"In addition to uncertainty over the reciprocal tariffs, what is most alarming is whether they could lead to a trade war," said Makoto Sengoku, senior equity market analyst at Tokai Tokyo Intelligence Laboratory Co.