Response of Xylem Ray Parenchyma Cells of Red Osier Dogwood (Cornus sericea L.) to Freezing Stress (Microscopic Evidence of Protoplasm Contraction)

Ristić, Zoran; Ashworth, Edward N.

doi:10.1104/pp.104.2.737

Cited by 25 publications

(11 citation statements)

References 28 publications

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“…Moreover, abundant wood parenchyma, as found in many tropical trees, can help to delay the onset of cavitation by providing high water storage capacity (Borchert and Pockman 2005 ). It is not known if excessive water loss from parenchyma cells during drought can compromise their physiological functions, although desiccation-induced damage to the protoplasm has been documented in wood parenchyma cells during cold stress (Ristic and Ashworth 1994 ). If the maintenance of turgor pressure is important, for instance for biomechanical reasons (Chapotin et al 2006 ), increased concentration of soluble sugars could provide means for reducing the capacitive discharge from wood parenchyma cells.…”

Section: The Role Of Sapwood Nsc At the Whole Plant Levelmentioning

confidence: 99%

The Role of Xylem Parenchyma in the Storage and Utilization of Nonstructural Carbohydrates

Plavcová

Jansen

2015

Functional and Ecological Xylem Anatomy

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Section: The Role Of Sapwood Nsc At the Whole Plant Levelmentioning

confidence: 99%

The Role of Xylem Parenchyma in the Storage and Utilization of Nonstructural Carbohydrates

Plavcová

Jansen

2015

Functional and Ecological Xylem Anatomy

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“…Towards the end of summer, the tips of shoots are transformed into winter buds before the onset of winter. During the transition to winter dormancy the cells become less turgid and the central vacuole splits up into many small vacuoles (Lachaud, 1989;Ristic and Ashworth, 1994). Cell cycle activity is reduced and the mitotic index declines to low levels (Colombo et al, 1989;Mellerowicz et al, 1995).…”

Section: Seasonality Of Freezing Tolerance In the Cold Climate Zonesmentioning

confidence: 99%

Climatic Constraints Drive the Evolution of Low Temperature Resistance in Woody Plants

Larcher

2005

J. Agric. Meteorol.

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Cold and frost are stress factors of widespread occurrence for plants. They damage woody plants due to chilling temperatures in the tropics, by freezing sensitive plants in regions with episodic frosts and temperatures down to -10 °C, and by freezing of even tolerant plants in regions with cold winters below -10 and -40 °C. The wide range of frost resistances in plants from different climatic zones indicates that the ability to become hardened to freezing has evolved in a stepwise process. There are opinions how an evolutionary acquisition of freezing tolerance could have taken place in the following way: First there is a differentiation of better adapted ecotypes and in the long term a series of functional plant groups develop along climatic gradients. Frequent climatic stress and climatic changes stimulate the selection of new genotypes resistant to climatic extremes. Furthermore, plants exposed to multiple stress factors in their habitat acquire a general cross tolerance to climatic constraints.The objective of this review is the understanding of low temperature resistance in woody plants, e.g. stabilization of biomembranes by lipid composition, deep supercooling, and ability to become freezing tolerant during winter dormancy. An over a hundred year long history of investigating frost stress and survival of different plant species has brought about an important understanding of basic processes. Recently antifreeze proteins which slow the freezing processes, and proteins, which protect the protoplasm against low temperature, frost and dehydration have been discovered. Findings that help to explain the mechanisms for coping with low temperature will be applicable to agriculture, horticulture, forestry and bioclimatology. The objective of this review is the understanding of basic processes of low temperature stress and the evolutionary adaptation of resistance in woody plants. 'Adaptation' is the response of plants to changing environmental conditions; it may be transitory (phenotypic) or permanent (genotypic). 'Evolutionary adaptation' is used here in the sense of genetically determined.The first descriptive investigations of frost damage and freezing resistance in different plant species were carried out very early e.g., Sachs (1860), Müller Thurgau (1886), Molisch (1897). From the middle of the last century onwards intensive analytical investigations of cytological, biophysical and biochemical mechanisms were made on plant organs and tissues (e.g., Asahina, 1956;Heber, 1968;Siminovitch et al., 1968; Krasavtsev, 1972;Burke et al., 1976), and general conclusions were drawn from these results (e.g., Levitt, 1980; Tumanov, 1979). Recently our knowledge of low temperature stress and frost resistance has been advanced due to molecular biological methods. Nowadays certain polypeptides and proteins which trigger controlled freezing and which protect the protoplasm against low temperature, frost and dehydration are known. All findings that help to explain mechanisms for coping with low temperature will have ...

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“…C. sericea, one of the most freeze-tolerant plants known, survives freezing exposure by enduring the dessicative stress that results from extracellular ice formation (Burke et al 1976). Due to the presence of extracellular ice, a vapor pressure gradient is generated, and intracellular water migrates to the extracellular ice crystals, resulting in intracellular desiccation (Burke et al 1976, Levitt 1980, Guy 1990, Ristic and Ashworth 1994. Molecular studies have confirmed that both drought and freezing stress induce expression of similar genes and that abscisic acid (ABA) mediates the response in both stresses (Close et al 1993a, Close et al 1993b, Campbell and Close 1997, Close 1997.…”

Section: Introductionmentioning

confidence: 99%

Photoperiodic Regulation of a 24-kD Dehydrin-Like Protein in Red-Osier Dogwood (Cornus sericea L.) in Relation to Freeze-Tolerance

Karlson

Zeng

Stirm

et al. 2003

Plant and Cell Physiology

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;A predominant 24-kD dehydrin-like protein was previously found to fluctuate seasonally within red-osier dogwood (Cornus sericea L.) stems. The current study attempted to determine what environmental cues triggered the accumulation of the 24-kD protein and to assess its potential role in winter survival. Controlled photoperiod and field studies confirmed that photoperiod regulates a reduction of stem water content (SWC), freeze-tolerance enhancement and accumulation of the 24-kD protein.Diverse climatic ecotypes, which are known to respond to different critical photoperiods, displayed differential reduction of SWC and accumulation of the 24-kD protein. A time-course study confirmed that prolonged exposure to short days is essential for SWC reduction, 24-kD protein accumulation, and freeze-tolerance enhancement. Water deficit induced 24-kD protein accumulation and enhanced freeze-tolerance under long-day conditions. In all instances, freeze-tolerance enhancement and 24-kD protein accumulation was preceded by a reduction of SWC. These results are consistent with the hypothesis that C. sericea responds to decreasing photoperiod, which triggers a reduction in SWC. Reduced SWC in turn may trigger the accumulation of the 24-kD protein and a parallel increase in freezetolerance.

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Response of Xylem Ray Parenchyma Cells of Red Osier Dogwood (Cornus sericea L.) to Freezing Stress (Microscopic Evidence of Protoplasm Contraction)

Cited by 25 publications

References 28 publications

The Role of Xylem Parenchyma in the Storage and Utilization of Nonstructural Carbohydrates

The Role of Xylem Parenchyma in the Storage and Utilization of Nonstructural Carbohydrates

Climatic Constraints Drive the Evolution of Low Temperature Resistance in Woody Plants

Photoperiodic Regulation of a 24-kD Dehydrin-Like Protein in Red-Osier Dogwood (Cornus sericea L.) in Relation to Freeze-Tolerance

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