Argyle have come from behind in each of their last three games to secure draws against Leicester and Swansea and a victory against Barnsley.
And Mariner believes that speaks volumes for the team spirit in his side.
He said: "If you talk to most people in the know in football if you have got that sort of spirit then it really does bode well for the future.
"There are still a lot of games to play. The players are extremely buoyant, they have got a togetherness about them, battling, never-say-die qualities."
Source: Team Talk
Source: Team Talk