( ( On ( other plants ) ) ( , ( ( leaf ( ( veins or ) stems ) ) ( ( become discolored ) . ) ) ) )
(ROOT (S (PP (IN On) (NP (JJ other) (NNS plants))) (, ,) (NP (NN leaf) (NNS veins) (CC or) (NNS stems)) (VP (VBP become) (S (VP (VBN discolored)))) (. .)))
On other plants, leaf veins or stems become discolored.
(ROOT (S (NP (NNS Leaves)) (VP (VBP export) (NP (NN sugar)) (PP (TO to) (NP (NP (NNS roots)) (CC and) (NP (NP (JJ other) (JJ nonphotosynthetic) (NNS parts)) (PP (IN of) (NP (DT the) (NN plant)))))) (PP (IN through) (NP (DT the) (NNS veins)))) (. .)))