One thing any aspiring jazz guitarist should know is how to play in different modes. Playing modes isn’t too different from playing the pentatonic scale — there are only two extra notes. However, where those notes go varies from mode to mode.
It is highly recommended that you understand and have practiced the positions and patterns associated with the pentatonic scale and have also covered the basic major and minor scales, as the different modes have a close relationship with these scales. One of the most closely related modes to the major scale is the Dorian mode.
Original Source: Jazz Guitar Modes: Mastering the Dorian Scale