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MORPHOLOGICAL, ANATOMICAL, AND MOLECULAR CONSEQUENCES OF GROWTH AND DEVELOPMENT AT LOW TEMPERATURE IN SECALE CEREALE
Author(s) -
Puma L. CV.,
Huner N. P. A.
Publication year - 1985
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1985.tb08382.x
Subject(s) - secale , biology , photosynthesis , ribulose , chloroplast , botany , cold hardening , rubisco , thylakoid , photosynthetic capacity , overwintering , chloroplast dna , biophysics , biochemistry , gene
Growth of winter cereals at low, nonfreezing temperatures is essential for the establishment of a cold‐hardy state and subsequent survival of the overwintering plant. In this paper, I describe the consequences of growth and development of Secale cereale L. cv. Puma at cold‐hardening temperatures with respect to leaf morphology, anatomy, and biochemistry, and with particular emphasis on their relationship to photosynthetic acclimation. Low temperature‐induced structural and functional alterations at the level of ribulose bisphosphate carboxylase‐oxygenase and the chloroplast thylakoid membrane are described and related to overall photosynthetic efficiency and capacity for CO 2 utilization. Growth and development at cold‐hardening temperatures appear to result in changes in protein conformation and membrane organization, but not in basic composition. It is proposed that developmental temperature imparts a significant effect on the assembly of these multimeric, photosynthetic components, which leads to distinct structural and functional changes.