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Principles of electron spin resonance
The resonance phenomenon magnetic interactions and the spin Hamiltonian isotropic hyperfine interaction the g-tensor the anisotropic hyperfine interaction systems with spin greater than 1.5 theExpand
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Free radical processes and loss of seed viability during desiccation in the recalcitrant species Quercus robur L.
SUMMARY Loss of moisture in mature seeds of Quercus robur L. was associated with loss of viability, a rise in lipid peroxidation and build-up of free radicals. Radical-initiated damage was largelyExpand
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The Involvement of Respiration in Free Radical Processes during Loss of Desiccation Tolerance in Germinating Zea mays L. (An Electron Paramagnetic Resonance Study)
When germinating Zea mays L. seeds are rapidly desiccated, free radical-mediated lipid peroxidation and phospholipid de-esterification is accompanied by a desiccation-induced buildup of a stable freeExpand
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Plants under drought-stress generate activated oxygen.
Lysed chloroplasts prepared from droughted wheat plants generate O2- on illumination as detected by electron spin resonance spectroscopy, the amplitude of the signal increasing with the severity ofExpand
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A free radical ubiquitously associated with senescence in plants: evidence for a quinone.
The interpretation of EPR and ENDOR measurements on an organic free radical which appears to be a universal concomitant of senescence in plants is discussed. On the basis of EPR spectra obtained atExpand
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Putative desiccation tolerance mechanisms in orthodox and recalcitrant seeds of the genus Acer
Recalcitrant seeds are shed moist from the plant and do not survive desiccation to the low moisture contents required for prolonged storage. It has been widely hypothesised that during desiccation ofExpand
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THE ROLE OF FREE RADICALS AND RADICAL PROCESSING SYSTEMS IN LOSS OF DESICCATION TOLERANCE IN GERMINATING MAIZE (ZEA MAYS L.)
SUMMARY On germination, maize seeds rapidly become intolerant of desiccation. Germinating seeds exposed to dehydrating conditions for 24 h show a significant rise in lipid peroxidation and theExpand
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Radical formation and accumulation in vivo, in desiccation tolerant and intolerant mosses.
Water loss in a desiccation-sensitive moss resulted in destruction of chlorophyll, loss of carotenoids and increased lipid peroxidation, indicating the presence of damaging forms of activated oxygen.Expand
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