Hyderabad,Dec 11: Kadapa MLC Y S Vivekananda Reddy and brother of late YS Rajasekhar Reddy on Friday threatened to go on fast indefinitely aginst the Centre's nod for Telangana statehood. The Kadapa legislator made fervent appeals toPrime Minister Manmohan Singh and Congress president Sonia Gandhi to change their decision. The decision to bifurcate Andhra Pradesh has hurt the sentiments of people in Rayalaseema.The bifurcation move would also go against the wishes of the former chief minister,he suggested.Is was YSR's cherished dream to retain Andhra Pradesh `united',he added.