* Energy stocks, miners slide on lower commodity prices
* Banks sharply lower retreating from last week's gains
* AstraZeneca gains on drug trials; defensive tobacco up
By Simon Falush
LONDON, March 30 (Reuters) - Weak commodities and renewed fears about the banking sector dragged Britain's leading share index 2 percent lower by midday on Monday with sentiment also hit by a rejection of turnaround plans for U.S. automakers.
By 1057 GMT the FTSE 100 <
> was 75.96 points lower at 3,822.89, after falling 0.7 percent on Friday, and is down 14.5 percent this year as the first quarter draws to a close.The Bank of Spain will bail out regional savings bank Caja Castilla la Mancha, the first Spanish banking rescue since the financial crisis began. [
]Britain's largest building society Nationwide said it has taken over collapsed Scottish Lender Dunfermline after the government failed to bail it out over the weekend. [
]The latest revelations helped push the UK banking index <.FTNMX8350> down 6.6 percent, with Barclays <BARC.L> down 7.7 percent as investors were unsettled by a report the bank will not take part in Britain's asset protection scheme.
Barclays gained 24 percent on Friday, and it is still over 200 percent above its low set in January, as the sector and broader market recovered on hopes the worst of the financial crisis may be past.
"The markets got a bit ahead of themselves (last week), reacting to data that was less bad than feared," said Jeremy Batstone-Carr, analyst at Charles Stanley.
"We are at a period of maximum vulnerability, it's easy to recover from lows but it's hard to see traction for recovery with the macro view not being prepossessing and the earnings outlook remains dire."
HSBC <HSBA.L>, Standard Chartered <STAN.L>, Royal Bank of Scotland <RBS.L> and Lloyds Banking Group <LLOY.L> slid between 4.1 and 7.9 percent.
AUTO REJECTION
The White House autos panel rejected the turnaround plans of General Motors <GM.N> and Chrysler LLC and warned both could be put through bankruptcy to slash debts. [
]This move helped drive Asian and European stocks lower, with U.S. markets expected to follow suit later on Monday.
Data showing that UK mortgage approvals were higher than expected in February did little to lighten the mood. [
]Reminding investors about the grim economic backdrop facing the British economy, house prices in England and Wales are at a record 10.3 percent lower than a year ago, although the prices fell at their slowest pace for 10 months in March, Hometrack said. [
]Energy majors lost ground and were the main drag on the index as crude retreated more than 3 percent to below $51 per barrel.
BP <BP.L>, Royal Dutch Shell <RDSa.L> BG Group <BG.L> fell 1.8 to 2.5 percent.
Miners were also under pressure with metal prices dented as increasing risk aversion hit appetite for the stocks.
Rio Tinto <RIO.L>, Kazakhmys <KAZ.L>, Eurasian Natural Resources <ENRC.L>, Anglo American <AAL.L>, Lonmin <LMI.L> and BHP Billiton <BLT.L> fell between 3.3 and 7.8 percent.
Shares in AstraZeneca <AZN.L> bucked the sharply weaker market trend, adding 1.4 percent following positive clinical trial results with its blockbuster cholesterol drug Crestor at the weekend. [
]Vodafone <VOD.L> was also in the black, gaining 1.3 percent after RBS upgraded it to "buy" from "hold".
Defensive tobacco stocks also gained ground as investors looked to shelter assets in sectors seen as resilient in a downturn. Imperial Tobacco <IMT.L> added 1.7 percent while British American Tobacco gained 1.7 percent. (Editing by Hans Peters)