( ( ( A ( long-day plant ) ) ( -LRB- ( ( ( a plant ) ( that ( ( flowers ( in ( ( the ( early summer ) ) ( in response ) ) ) ) ( to ( increasing ( day length ) ) ) ) ) ) -RRB- ) ) ) ( ( will ( be ( used ( to ( isolate ( the ( appropriate promoters ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ long-day) (NN plant)) (PRN (-LRB- -LRB-) (NP (NP (DT a) (NN plant)) (SBAR (WHNP (WDT that)) (S (VP (VBD flowers) (PP (IN in) (NP (NP (DT the) (JJ early) (NN summer)) (PP (IN in) (NP (NN response))))) (PP (TO to) (NP (VBG increasing) (NN day) (NN length))))))) (-RRB- -RRB-))) (VP (MD will) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB isolate) (NP (DT the) (JJ appropriate) (NNS promoters)))))))) (. .)))
A long-day plant (a plant that flowers in the early summer in response to increasing day length) will be used to isolate the appropriate promoters.
(ROOT (S (NP (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (NN increase)) (PP (IN in) (NP (NN length)))) (VP (VBZ happens) (PP (TO to) (NP (NN metal) (NN railroad) (NNS tracks))) (PP (IN during) (NP (NP (DT the) (NN heat)) (PP (IN of) (NP (DT a) (NN summer) (NN day)))))) (. .)))