( ( Changes ( in ( plant N ) ) ) ( ( uptake ( during ( the ( growing season ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Changes)) (PP (IN in) (NP (NN plant) (NNP N)))) (VP (VBP uptake) (PP (IN during) (NP (DT the) (VBG growing) (NN season)))) (. .)))
Changes in plant N uptake during the growing season.
(ROOT (S (NP (RBS Most) (JJ growing) (NN plant) (NNS cells)) (VP (VBP expand) (PP (IN through) (NP (NN water) (NN uptake)))) (. .)))