Localization of cells containing sedimented amyloplasts in the shoots of normal and lazy rice seedlings.

K. Abe, H. Takahashi, H. Suge

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    16 Citations (Scopus)

    Abstract

    We have examined the localization of the cells containing sedimented amyloplasts (putative statocytes) and its relation to the graviresponding sites in the shoots of normal and lazy rice seedlings. All graviresponsive organs of the shoots of normal rice seedlings, the mesocotyl, the coleoptile and the leaf-sheath base, were found to possess the statocytes. This is the first indication that mesocotyl senses gravity by its own cells in inducing gravitropic bending in rice seedlings. In lazy-Kamenoo, although the shoots lost their gravitropic response with the advance of age, sedimentation of amyloplasts itself might not be attributable to the agravitropic growth of the shoots, because, including those of the leaf-sheath bases that had lost their response to gravity, sedimented amyloplasts appeared to be identical to those of normal Kamenoo and of younger seedlings of lazy-Kamenoo whose gravitropism is still apparent.

    Original languageEnglish
    Pages (from-to)221-225
    Number of pages5
    JournalBiological sciences in space = Uchū seibutsu kagaku
    Volume8
    Issue number4
    DOIs
    Publication statusPublished - 1994 Dec

    ASJC Scopus subject areas

    • Medicine(all)

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