Bring me up part of tree to make board (6)
I believe the answer is:
embark
'board' is the definition.
(I know that embark is a kind of board)
'bring me up part of tree' is the wordplay.
'bring me up' becomes 'em' (I can't explain this - if you can you should give a lot more credence to this answer).
'part of tree' becomes 'bark' ('bark' is part of 'tree').
'em'+'bark'='EMBARK'
'to make' acts as a link.
Can you help me to learn more?
(Other definitions for embark that I've seen before include "Go on board ship or plane" , "Start" , "board production" , "get on board" , "Go aboard" .)