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Chromosomes and Plant Cell Division in Space (284054 2_3)
Principal Investigator
Research Area:
Cell and molecular biology
Developmental biology
Plant biology
Species Studied
Scientific Name: Haplopappus gracilis Species: Haplopappus
Scientific Name: Hemerocallis Species: Daylily Strain: Autumn blaze


This CHROMEX flight experiment was a continuation of the experiment conducted on CHROMEX-01, which flew on STS-29. There were two primary objectives: 1) to test whether the normal rate, frequency and patterning of cell division in the root tip can be sustained in microgravity; 2) to determine whether the fidelity of chromosome partitioning is maintained during and after flight.

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Krikorian AD, Levine HG, Kann RP, O'Connor SA. Effects of spaceflight on growth and cell division in higher plants. Adv Space Biol Med. 1992;2:181-209.[]

Krikorian AD. Space stress and genome shock in developing plant cells. Physiol Plant. 1996;98(4):901-8.[]

Levine HG, Krikorian AD. Value of linear additive models for interpreting spaceflight results. ASGSB Bulletin 1992;6(1):52.

Levine HG, Obenland DM, Brown CS, Krikorian AD. Baseline data and design considerations in a plant tissue sharing effort. ASGSB Bulletin 1993;7(1):38.

Carbon dioxide (CO2)
Culture media
Genes, plant
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Data Information
Data Availability
Archiving in progress. Data is not yet available for this experiment.

Cell division
Chromosome partitioning
Root growth
Shoot growth

Additional Information
Managing NASA Center
Kennedy Space Center (KSC)
Responsible NASA Representative
Kennedy Space Center LSDA Level 3
Project Manager: Sylvain Costes
Institutional Support
National Aeronautics and Space Administration (NASA)
Alternate Experiment Name
Proposal Source