Preferential accumulation of betaine uncoupled to choline monooxygenase in young leaves of sugar beet--importance of long-distance translocation of betaine under normal and salt-stressed conditions.

@article{Yamada2009PreferentialAO,
  title={Preferential accumulation of betaine uncoupled to choline monooxygenase in young leaves of sugar beet--importance of long-distance translocation of betaine under normal and salt-stressed conditions.},
  author={Nana Yamada and Worrawat Promden and Koji Yamane and Hideto Tamagake and Takashi Hibino and Yoshito Tanaka and Teruhiro Takabe},
  journal={Journal of plant physiology},
  year={2009},
  volume={166 18},
  pages={2058-70}
}
It has been reported that glycinebetaine (betaine) is synthesized in response to abiotic stresses via a two-step oxidation of choline in which choline monooxygenase (CMO) and betaine aldehyde dehydrogenase (BADH) are involved. Here we show that significant amounts of betaine, > 20 micromol/gFW, accumulated in young leaves of Beta vulgaris even under normal growth conditions, whereas levels in old leaves, cotyledons, hypocotyls, and roots were low. Under the same conditions, CMO accumulates… CONTINUE READING
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