BERLIN, Jan 6 - A euro value that stuck at around $1.25 to $1.30 would be damaging for Germany's export-oriented economy, one of the German government's independent economic advisers said on Tuesday. "A persistent exchange rate of $1.25 to $1.30 is worrying. The German economy is export-oriented and this hinders exports. Moreover, it does not just affect exports to the United States, but also those within the euro zone," Bert Ruerup, one of Germany's five so-called "wisemen", told n-tv television station. However, he said he did not believe Germany's recovery was threatened by the euro's rise, adding Europe's largest economy should grow by 1.6 to 1.7 percent this year.//