As I said before, according to Turkish Nationality Code, Article 5:
(NATURALIZATION BY MARRIAGE)

'an alien who wants to acquire Turkish citizenship by marriage; should apply to the highest district official(or to Turkish Consulate if they are abroad) with a written request, if they have been married for three years and living together as a husband-wife since the date of the marriage. Upon this application, the alien acquires Turkish citizenship if the home office inquiry and investigation approve that the requirements have been met. '

So, to sum up, after three years of the marriage with a Turkish citizen, an alien can apply for the citizenship and acquires it if it is a 'real' marriage. (This article was enacted to prevent fake marriages for the citizenship.)