RPT-WRAPUP 2-Commerzbank, Natixis hit as capital strains show

* Commerzbank down 15 pct after state's 10 bln eur injection

* Deutsche Bank confident can forego state aid, source says

* Natixis hit by report of 2 bln eur loss, shares down 7 pct

* Other European banks mixed; index up 1 pct

(Adds source comment on Deutsche Bank, background)

By Jonathan Gould and Marcel Michelson

FRANKFURT/PARIS, Jan 9 (Reuters) - Germany's 10 billion euro injection into Commerzbank and worries of big losses at two other banks on Friday underscored the strain on capital and the tough industry outlook facing Europe's lenders.

Commerzbank (CBKG.DE) shares fell as much as 15 percent as analysts questioned the merits of its purchase of rival Dresdner Bank, which required the government to part-nationalise it by taking a 25 percent stake, diluting shareholders' investments.

France's Natixis (CNAT.PA) tumbled 7 percent after a report it may need more capital and post a wider-than-forecast 2008 loss of up to 2 billion euros ($2.7 billion).

Deutsche Postbank (DPBGn.DE) dipped 6 percent after it said it will report a big 2008 loss after scrapping its stocks portfolio triggered big hidden losses. [ID:nL9669326]

The Financial Times Deutschland reported that Deutsche Bank (DBKGn.DE) might make use state guarantees, as Commerzbank did to issue a 5 billion euro bond. [ID:nWEA1085]

But a financial source familiar with the situation told Reuters that Germany's biggest lender was confident of weathering the financial crisis without seeking government help.

Deutsche Bank declined to comment.

Financial players say lenders like Deutsche and Commerzbank, which is close to completing its takeover of Dresdner Bank from insurer Allianz (ALVG.DE), were hit hard by renewed financial turmoil in the fourth quarter. Deutsche shares fell 5.8 percent.

Many banks have been winding down risky portfolios, preferring to take a hit in the fourth quarter in hope of more stability thereafter.