The influence of gravity on the formation of amyloplasts in columella cells of Zea mays L.

R. Moore, W. M. Fondren, E. C. Koon, C. L. Wang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Columella (i.e., putative graviperceptive) cells of Zea mays seedlings grown in the microgravity of outer space allocate significantly less volume to putative statoliths (amyloplasts) than do columella cells of Earth-grown seedlings. Amyloplasts of flight-grown seedlings are significantly smaller than those of ground controls, as is the average volume of individual starch grains. Similarly, the relative volume of starch in amyloplasts in columella cells of flight-grown seedlings is significantly less than that of Earth-grown seedlings. Microgravity does not significantly alter the volume of columella cells, the average number of amyloplasts per columella cell, or the number of starch grains per amyloplast. These results are discussed relative to the influence of gravity on cellular and organellar structure.

Original languageEnglish (US)
Pages (from-to)867-868
Number of pages2
JournalPlant physiology
Volume82
DOIs
StatePublished - 1986

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This record is sourced from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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