The Experts below are selected from a list of 111078 Experts worldwide ranked by ideXlab platform
Hans Lambers - One of the best experts on this subject based on the ideXlab platform.
-
summer dormancy and winter growth root Survival Strategy in a perennial monocotyledon
New Phytologist, 2009Co-Authors: Michael W Shane, John S Pate, Margaret E Mccully, Martin J Canny, Ulrike Mathesius, Gregory R Cawthray, Hans LambersAbstract:Summary • Here, we tested the alternation of root summer dormancy and winter growth as a critical Survival Strategy for a long-lived monocotyledon (Restionaceae) adapted to harsh seasonal extremes of Mediterranean southwest Western Australia. • Measurements of growth and the results of comparative studies of the physiology, water content, metabolites, osmotic adjustments, and proteomics of the dormant and growing perennial roots of Lyginia barbata (Restionaceae) were assessed in field-grown plants. • Formation of dormant roots occurred before the onset of summer extremes. They resumed growth (average 2.3 mm d−1) the following winter to eventually reach depths of 2–4 m. Compared with winter-growing roots, summer dormant roots had decreased respiration and protein concentration and c. 70% water content, sustained by sand-sheaths, osmotic adjustment and presumably hydraulic redistribution. Concentrations of compatible solutes (e.g. sucrose and proline) were significantly greater during dormancy, presumably mitigating the effects of heat and drought. Fifteen root proteins showed differential abundance and were correlated with either winter growth or summer dormancy. None matched currently available libraries. • The specific features of the root dormancy Strategy of L. barbata revealed in this study are likely to be important to understanding similar behaviour in roots of many long-lived monocotyledons, including overwintering and oversummering crop species.
Michael W Shane - One of the best experts on this subject based on the ideXlab platform.
-
summer dormancy and winter growth root Survival Strategy in a perennial monocotyledon
New Phytologist, 2009Co-Authors: Michael W Shane, John S Pate, Margaret E Mccully, Martin J Canny, Ulrike Mathesius, Gregory R Cawthray, Hans LambersAbstract:Summary • Here, we tested the alternation of root summer dormancy and winter growth as a critical Survival Strategy for a long-lived monocotyledon (Restionaceae) adapted to harsh seasonal extremes of Mediterranean southwest Western Australia. • Measurements of growth and the results of comparative studies of the physiology, water content, metabolites, osmotic adjustments, and proteomics of the dormant and growing perennial roots of Lyginia barbata (Restionaceae) were assessed in field-grown plants. • Formation of dormant roots occurred before the onset of summer extremes. They resumed growth (average 2.3 mm d−1) the following winter to eventually reach depths of 2–4 m. Compared with winter-growing roots, summer dormant roots had decreased respiration and protein concentration and c. 70% water content, sustained by sand-sheaths, osmotic adjustment and presumably hydraulic redistribution. Concentrations of compatible solutes (e.g. sucrose and proline) were significantly greater during dormancy, presumably mitigating the effects of heat and drought. Fifteen root proteins showed differential abundance and were correlated with either winter growth or summer dormancy. None matched currently available libraries. • The specific features of the root dormancy Strategy of L. barbata revealed in this study are likely to be important to understanding similar behaviour in roots of many long-lived monocotyledons, including overwintering and oversummering crop species.
Simon Alberti - One of the best experts on this subject based on the ideXlab platform.
-
protein phase separation as a stress Survival Strategy
Cold Spring Harbor Perspectives in Biology, 2019Co-Authors: Titus M Franzmann, Simon AlbertiAbstract:Cells under stress must adjust their physiology, metabolism, and architecture to adapt to the new conditions. Most importantly, they must down-regulate general gene expression, but at the same time induce synthesis of stress-protective factors, such as molecular chaperones. Here, we investigate how the process of phase separation is used by cells to ensure adaptation to stress. We summarize recent findings and propose that the solubility of important translation factors is specifically affected by changes in physical-chemical parameters such temperature or pH and modulated by intrinsically disordered prion-like domains. These stress-triggered changes in protein solubility induce phase separation into condensates that regulate the activity of the translation factors and promote cellular fitness. Prion-like domains play important roles in this process as environmentally regulated stress sensors and modifier sequences that determine protein solubility and phase behavior. We propose that protein phase separation is an evolutionary conserved feature of proteins that cells harness to regulate adaptive stress responses and ensure Survival in extreme environmental conditions.
-
Gel or Die: Phase Separation as a Survival Strategy
Cell, 2017Co-Authors: Sonja Kroschwald, Simon AlbertiAbstract:Stress conditions trigger protein assembly by demixing from the cytoplasm, but the biological significance is still unclear. In this issue of Cell, Riback et al. report that the yeast poly(A)-binding protein 1 (Pab1) is a phase-separating stress sensor that boosts organismal fitness under physiological stress conditions.
Margaret E Mccully - One of the best experts on this subject based on the ideXlab platform.
-
summer dormancy and winter growth root Survival Strategy in a perennial monocotyledon
New Phytologist, 2009Co-Authors: Michael W Shane, John S Pate, Margaret E Mccully, Martin J Canny, Ulrike Mathesius, Gregory R Cawthray, Hans LambersAbstract:Summary • Here, we tested the alternation of root summer dormancy and winter growth as a critical Survival Strategy for a long-lived monocotyledon (Restionaceae) adapted to harsh seasonal extremes of Mediterranean southwest Western Australia. • Measurements of growth and the results of comparative studies of the physiology, water content, metabolites, osmotic adjustments, and proteomics of the dormant and growing perennial roots of Lyginia barbata (Restionaceae) were assessed in field-grown plants. • Formation of dormant roots occurred before the onset of summer extremes. They resumed growth (average 2.3 mm d−1) the following winter to eventually reach depths of 2–4 m. Compared with winter-growing roots, summer dormant roots had decreased respiration and protein concentration and c. 70% water content, sustained by sand-sheaths, osmotic adjustment and presumably hydraulic redistribution. Concentrations of compatible solutes (e.g. sucrose and proline) were significantly greater during dormancy, presumably mitigating the effects of heat and drought. Fifteen root proteins showed differential abundance and were correlated with either winter growth or summer dormancy. None matched currently available libraries. • The specific features of the root dormancy Strategy of L. barbata revealed in this study are likely to be important to understanding similar behaviour in roots of many long-lived monocotyledons, including overwintering and oversummering crop species.
John S Pate - One of the best experts on this subject based on the ideXlab platform.
-
summer dormancy and winter growth root Survival Strategy in a perennial monocotyledon
New Phytologist, 2009Co-Authors: Michael W Shane, John S Pate, Margaret E Mccully, Martin J Canny, Ulrike Mathesius, Gregory R Cawthray, Hans LambersAbstract:Summary • Here, we tested the alternation of root summer dormancy and winter growth as a critical Survival Strategy for a long-lived monocotyledon (Restionaceae) adapted to harsh seasonal extremes of Mediterranean southwest Western Australia. • Measurements of growth and the results of comparative studies of the physiology, water content, metabolites, osmotic adjustments, and proteomics of the dormant and growing perennial roots of Lyginia barbata (Restionaceae) were assessed in field-grown plants. • Formation of dormant roots occurred before the onset of summer extremes. They resumed growth (average 2.3 mm d−1) the following winter to eventually reach depths of 2–4 m. Compared with winter-growing roots, summer dormant roots had decreased respiration and protein concentration and c. 70% water content, sustained by sand-sheaths, osmotic adjustment and presumably hydraulic redistribution. Concentrations of compatible solutes (e.g. sucrose and proline) were significantly greater during dormancy, presumably mitigating the effects of heat and drought. Fifteen root proteins showed differential abundance and were correlated with either winter growth or summer dormancy. None matched currently available libraries. • The specific features of the root dormancy Strategy of L. barbata revealed in this study are likely to be important to understanding similar behaviour in roots of many long-lived monocotyledons, including overwintering and oversummering crop species.
