Singer Jhene Aiko is the pulling the plug on her marriage to her producer/hubby Dot da Genius ... and the timing is interesting.

Aiko and Dot were married for only 11 months. Jhene was recently linked to Big Sean. The two have been working together and this past June they made out in front of an Anaheim concert crowd.

Jhene's asking the judge to deny Dot spousal support.

She's listed irreconcilable differences as the reason for the breakup ... that's code for anything you want.