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Space stress and genome shock in developing plant cellsIn the present paper I review symptoms of stress at the level of the nucleus in cells of plants grown in space under nonoptimized conditions. It remains to be disclosed to what extent gravity "unloading" in the space environment directly contributes to the low mitotic index and the chromosomal anomalies and damage that is frequently, but not invariably, demonstrable in space-grown plants. Evaluation of the available facts indicates that indirect effects play a major role and that there is a significant biological component to the susceptibility to stress damage equation as well. Much remains to be learned on how to provide strictly controlled, optimal environments for plant growth in space. Only after optimized controls become possible will one be able to attribute any observed space effects to lowered gravity or to other significant but more indirect effects of the space environment.
Document ID
Document Type
Reprint (Version printed in journal)
Krikorian, A. D. (State Univ. of New York Stony Brook 11794-5215, United States)
Date Acquired
August 21, 2013
Publication Date
December 1, 1996
Publication Information
Publication: Physiologia plantarum
Volume: 98
Issue: 4
ISSN: 0031-9317
Subject Category
Life Sciences (General)
Distribution Limits
Review, Tutorial
NASA Discipline Plant Biology
Non-NASA Center