UPDATE 3-Shell's BG bid dealt blow with first shareholder dissent
* Standard Life says to vote against $49 bln deal
* Standard cites oil price, Brazil risk for vote
* But major shareholder advisory ISS endorses deal
* Shell confident deal will win support in Jan. 27 vote (Adds concern about Brazil risk in 1st, 8th and 9th paragraphs)
By Ron Bousso
LONDON, Jan 8 (Reuters) - Royal Dutch Shell's bid to acquire BG Group was dealt a blow on Friday when a first major shareholder said it would vote against the $49 billion deal due to a weak outlook for oil prices and risks related to BG's assets in Brazil.
Standard Life Investment's announcement came on the same day influential shareholder advisory firm Institutional Shareholder Services (ISS) endorsed the deal, saying the downturn in oil markets did not detract from its strategic benefits.
The first public sign of dissent from a key investor was unlikely to scupper Chief Executive Ben van Beurden's drive to win the required shareholder support in a Jan. 27 vote.
Few investors or analysts have openly challenged the deal's strategic benefits for Shell, which will become the world's top liquefied natural gas trader and a major offshore oil producer. Continuación...