单词	symplast
释义	symplast /ˈsɪmplast / /ˈsɪmplɑːst/ noun Botany A continuous network of interconnected plant cell protoplasts.Where access to this space becomes restricted by an exodermal resistance, a greater proportion of the total flux of a material may be absorbed at the root periphery and pass from cell to cell via the symplast.... It is possible that a proportion of ammonium fed to maize roots enters the symplast at the endodermis and is incorporated into amino acids within the pericycle which results in it becoming acidotic. Instead, it appears that there is a barrier to movement between the post-phloem symplast and the nucellus. Derivatives symplastic adjective ... These results suggest that movement of mineral oil in plants is both apoplastic via intercellular spaces and symplastic via plasmodesmata. In these cases sugar contents declined, possibly limiting translocation as in brown rust-infected barley leaves, in which apoplastic and symplastic sugar concentrations were reduced as export declined. It is therefore probable that much of the increase in sugars during sub-zero hardening was symplastic. Origin 1930s: from German Symplast.
随便看	entorhinal entourage entr'acte entrails entrain entrainment entrammel entrance entrance hall entrancement entrance pupil entranceway entrance wound entrancingly entrant entrap entrapment en travesti entreat entreatingly entreaty entrechat entrecôte entremets entrench

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