Mitochondrial Activity and Ethanol Accumulation in Ice-encased Winter Cereal Seedlings
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Cold-hardened dark-grown seedlings of winter wheat and winter rye are killed during total encasement in ice at -1 C at a rate related to the initial cold hardiness of the cultivars.Abstract:
Cold-hardened dark-grown seedlings of winter wheat (Triticum aestivum L.) and winter rye (Secale cereale L.) are killed during total encasement in ice at −1 C at a rate related to the initial cold hardiness of the cultivars. Few plants remain alive after 7 days of encasement. Nonhardened seedlings are rapidly killed in ice. The respiratory properties of mitochondria isolated from plants after increasing periods of ice encasement decline slowly, and activity is little impaired when intact plants are about 50% killed. Electron microscopy indicates that mitochondrial structure is not disrupted until 3 weeks of ice encasement. Ethanol accumulates in hardened and nonhardened plants in ice, but at levels which are not toxic to the plants.read more
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Book ChapterDOI
Anaerobic metabolism and the production of organic acids
TL;DR: This chapter discusses the biochemical adaptations to anoxia, the ability of plants to survive anaerobic conditions depends on morphological and anatomical features and physiological and biochemical factors.
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Deterioration of membranes during aging in plants: evidence for free radical mediation
Journal ArticleDOI
How Do Plants Survive Ice
TL;DR: Some associations between plants and ice are explored, with an emphasis on processes in plants that alleviate stress imposed by ice cover, from winter cereals which must reach an equilibrium both with ice and with freezing temperatures for survival and economic productivity.
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Simple snow cover model for agrometeorological applications
Miroslav Trnka,E. Kocmánková,J. Balek,Josef Eitzinger,Françoise Ruget,Herbert Formayer,Petr Hlavinka,Andreas Schaumberger,Vladimíra Horáková,Martin Možný,Zdeněk Žalud +10 more
TL;DR: In this article, the authors developed and tested a snow cover model for agrometeorological use (snowMAUS) that relies strictly on the weather data used by all crop simulation models, i.e., diurnal temperature extremes and total daily precipitation.
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Ethanol and Acetaldehyde in Imbibing Soybean Seeds in Relation to Deterioration
TL;DR: It is suggested that, during aging, an imbalance between tricarboxylic and glycolytic activities, present during early imbibition to some degree even in vigorous unaged seeds, becomes more pronounced and leads to accumulation of ethanol and acetaldehyde.
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