Online citations, reference lists, and bibliographies.
Please confirm you are human
(Sign Up for free to never see this)
← Back to Search

The Influence Of Leaf-aging On The Heat-sensitivity And Heat-hardening Of The Photosynthetic Apparatus In Phaseolus Vulgaris

I. Yordanov, E. Weis
Published 1984 · Biology

Save to my Library
Download PDF
Analyze on Scholarcy
Summary The resistance of the photosynthetic apparatus of primary leaves from Phaseolus vulgaris to short-term heat-shock (5 min) and to long-term heat-stress (1 to 5h) is studied. A model system is used, in which the aging of primary leaves is retarded by decapitation (removal of the apex). This offers the opportunity to compare leaves from the same calendary age (25 to 32 d) but being in different physiological states (mature or senescing). Photosynthetic CO 2 -uptake, chlorophyll fluorescence and the field-indicating absorbance change at 518 nm are measured with intact leaves after different heat-stress to characterize the pattern of heat-damage. It is shown, that there is no significant difference between the sensitivity of mature or aged leaves to short heat-treatments. However, the ability of leaves to increase their thermal stability during incubation at high, but not yet damaging temperatures (heat-hardening), clearly demonstrated in mature leaves, declines during aging and is almost absent in senescent leaves. This loss in adaptive changes may account for the decline in the overall resistance of the photosynthetic apparatus to longterm heat-stress observed during leaf-senescence.
This paper references
Relative thermostability of the chloroplast envelope
G. Krause (2004)
Phase Behavior of Chloroplast and Microsomal Membranes during Leaf Senescence.
B. Mckersie (1978)
Heat-induced changes of chlorophyll fluorescence in isolated chloroplasts and related heat-damage at the pigment level.
U. Schreiber (1978)
6 – Chlorophyll Fluorescence: An Intrinsic Probe of Photosynthesis
G. Papageorgiou (1975)
Influence of light on the heat sensitivity of the photosynthetic apparatus in isolated spinach chloroplasts.
E. Weis (1982)
Inhibition of chloroplasts by UV-irradiation and heat-treatment.
T. Yamashita (1968)
The effects of decapitation on the distribution of cytokinins and growth of Phaseolus vulgaris plants
J. Staden (1982)
Klimastreß im Gebirge — Adaptationstraining und Selektionsfilter für Pflanzen
W. Larcher (1980)
Membrane Potentials in Photosynthesis
W. Junge (1977)
Photosynthetic Response and Adaptation to Temperature in Higher Plants
J. Berry (1980)
Short term acclimation of spinach to high temperatures: effect on chlorophyll fluorescence at 293 and 77 Kelvin in intact leaves.
E. Weis (1984)
Reversible Effects of High, Sublethal Temperatures on Light-Induced Light Scattering Changes and Electrochromic Pigment Absorption Shift in Spinach Leaves
E. Weis (1981)
Photosynthetic Electron Transport During Senescence of the Primary Leaves of Phaseolus vulgaris L.: I. NON-CYCLIC ELECTRON TRANSPORT
G. Jenkins (1981)
The temperature‐sensitivity of dark‐inactivation and light‐activation of the ribulose‐1,5‐bisphosphate car☐ylase in spinach chloroplasts
E. Weis (1981)
Photosynthesis of Ivy Leaves (Hedera helix) after Heat Stress I. CO2‐Gas Exchange and Diffusion Resistances
H. Bauer (1978)
Cells, Molecules and Temperature: Conformational Flexibility of Macromolecules and Ecological Adaptation
V. Y. Alexandrov (1977)
Age dependent changes in phospholipids and galactolipids in primary bean leaves (Phaseolus vulgaris)
F. Fong (1977)
Lipid crystallization in senescent membranes from cotyledons.
B. Mckersie (1977)
Photosynthesis of Ivy Leaves (Hedera helix L.) after Heat Stress II. Activity of Ribulose Bisphosphate Carboxylase, Hill Reaction, and Chloroplast Ultrastructure
H. Bauer (1979)
Photosynthetic Electron Transport During Senescence of the Primary Leaves of Phaseolus vulgaris L.II. THE ACTIVITY OF PHOTOSYSTEMS ONE AND TWO, AND A NOTE ON THE SITE OF REDUCTION OF FERRICYANIDE
G. Jenkins (1981)

This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar