Interactive effect of shade and PEG-induced osmotic stress on physiological responses of soybean seedlings

Structural and physiological responses of chrysanthemum to repeated osmotic stress were studied. Plants were cultured for 2 weeks (for each stress1 and stress 2) on half MS supplemented with mannitol 100 mM (Treatment I) and 200 mM (Treatment II). First stress inhibited growth parameters stronger than second stress in treatment I. In treatment II both stress events strongly inhibited growth parameters of micro‐shoots. Proline content exceeded control 6 ‐ 8 times after 1st stress, and 2 ‐ 5 times after the 2nd stress in treatments I and II, respectively. Soluble protein was accumulated in leaves during both stress exposures, and 2 ‐ 2.5 times exceeded control after the 2nd stress. Relative water content in both treatments increased after the 2nd stress exposure. In treatment II chlorophyll а and carotenoids contents were 8.78 and 4.62 mg/g comparing to control (4.21 and 2.25 mg/g, respectively) after the 1st stress. But after the 2nd stress there was no difference with control.Plant Tissue Cult. & Biotech. 27(2): 161-169, 2017 (December)

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Link between Lipid Second Messengers and Osmotic Stress in Plants

International Journal of Molecular Sciences ◽

10.3390/ijms22052658 ◽

2021 ◽

Vol 22 (5) ◽

pp. 2658

Author(s):

Beatriz A. Rodas-Junco ◽

Graciela E. Racagni-Di-Palma ◽

Michel Canul-Chan ◽

Javier Usorach ◽

S. M. Teresa Hernández-Sotomayor

Keyword(s):

Osmotic Stress ◽

Protein Conformation ◽

Membrane Lipids ◽

Second Messengers ◽

Physiological Responses ◽

Plant Cells ◽

Transient Molecules ◽

Molecular Approaches ◽

Extracellular Signal ◽

Different Types

Plants are subject to different types of stress, which consequently affect their growth and development. They have developed mechanisms for recognizing and processing an extracellular signal. Second messengers are transient molecules that modulate the physiological responses in plant cells under stress conditions. In this sense, it has been shown in various plant models that membrane lipids are substrates for the generation of second lipid messengers such as phosphoinositide, phosphatidic acid, sphingolipids, and lysophospholipids. In recent years, research on lipid second messengers has been moving toward using genetic and molecular approaches to reveal the molecular setting in which these molecules act in response to osmotic stress. In this sense, these studies have established that second messengers can transiently recruit target proteins to the membrane and, therefore, affect protein conformation, activity, and gene expression. This review summarizes recent advances in responses related to the link between lipid second messengers and osmotic stress in plant cells.

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Physiological responses of horseshoe crab (Limulus polyphemus) embryos to osmotic stress and a possible role for stress proteins (HSPs)

Marine Biology ◽

10.1007/s00227-011-1682-y ◽

2011 ◽

Vol 158 (8) ◽

pp. 1691-1698 ◽

Cited By ~ 7

Author(s):

Morgan P. Greene ◽

Mary G. Hamilton ◽

Mark L. Botton

Keyword(s):

Osmotic Stress ◽

Horseshoe Crab ◽

Stress Proteins ◽

Physiological Responses ◽

Limulus Polyphemus

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Physiological Responses of Wild and Cultivated Barley to the Interactive Effect of Salinity and Iron Deficiency

ISRN Agronomy ◽

10.5402/2012/121983 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 3

Author(s):

Sabeh Yousfi ◽

Hayet Houmani ◽

Fethia Zribi ◽

Chedly Abdelly ◽

Mohamed Gharsalli

Keyword(s):

Wild Barley ◽

Physiological Responses ◽

Interactive Effect ◽

Absorption Efficiency ◽

Iron Limitation ◽

Interactive Effects ◽

Photosynthetic Parameters ◽

Iron Supply ◽

Salt Level ◽

Nacl Concentration

Literature on the separate effects of salinity and inadequate Fe supply on plant growth and nutrient uptake, concentration, and distribution is abundant but little is known about the interactive effects of these two abiotic constraints. Here, we investigated the interactive effect of iron availability and salinity on physiological responses of cultivated and wild barley (Hordeum vulgare and H. maritimum resp.). Seedlings of both species were grown for 9 days, under complete nutrient solution with or without iron supply. Then, NaCl treatment was applied at different concentrations (0, 100, 200, and 300 mM) for 60 hours. After salt exposure, shoot water content of H. vulgare was significantly reduced as compared to H. maritimum. Furthermore, Na+ accumulation in shoots increased parallel to increasing NaCl concentration in the medium. However, the increase was significantly higher in H. vulgare than in H. maritimum. These responses were associated with lower Fe absorption efficiency photosynthetic parameters in both species. The reduction was significantly higher in cultivated than in wild barley. Moreover, phytosiderophore exudation was enhanced in both species by direct (iron free medium) or indirect iron limitation (salt-induced iron limitation). Such a stimulation of phytosiderophore release was genotype and salt level dependant.

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Activity of antioxidant enzymes and physiological responses in ark shell, Scapharca broughtonii, exposed to thermal and osmotic stress: Effects on hemolymph and biochemical parameters

Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology ◽

10.1016/j.cbpb.2009.09.008 ◽

2010 ◽

Vol 155 (1) ◽

pp. 34-42 ◽

Cited By ~ 113

Author(s):

Myung In An ◽

Cheol Young Choi

Keyword(s):

Antioxidant Enzymes ◽

Osmotic Stress ◽

Biochemical Parameters ◽

Physiological Responses ◽

Stress Effects ◽

Scapharca Broughtonii ◽

Ark Shell

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Ultrafine bubbles alleviated osmotic stress in soybean seedlings

Plant Production Science ◽

10.1080/1343943x.2021.2021094 ◽

2022 ◽

pp. 1-6

Author(s):

Morio Iijima ◽

Kaito Yamashita ◽

Yoshihiro Hirooka ◽

Yoshikatsu Ueda ◽

Koji Yamane ◽

...

Keyword(s):

Osmotic Stress ◽

Soybean Seedlings

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Differences in the physiological responses of Rht13 and rht wheat lines to short-term osmotic stress

Cereal Research Communications ◽

10.1007/s42976-020-00012-5 ◽

2020 ◽

Vol 48 (1) ◽

pp. 41-47 ◽

Cited By ~ 1

Author(s):

J. Yan ◽

N. Zhang ◽

X. Wang ◽

S. Zhang

Keyword(s):

Osmotic Stress ◽

Physiological Responses ◽

Short Term ◽

Wheat Lines

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Physiological Responses of Largemouth Bass, Micropterus salmoides, Exposed to Salinity

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f90-262 ◽

1990 ◽

Vol 47 (12) ◽

pp. 2358-2363 ◽

Cited By ~ 20

Author(s):

M. R. Meador ◽

W. E. Kelso

Keyword(s):

Osmotic Stress ◽

Ion Transport ◽

Freshwater Fish ◽

Largemouth Bass ◽

Laboratory Experiments ◽

Micropterus Salmoides ◽

Physiological Responses ◽

Plasma Chemistry ◽

Elevated Plasma ◽

Active Ion Transport

Plasma osmotic and electrolyte concentrations as well as branchial Na+/K+ and Mg++ ATPase activities were determined in the field for largemouth bass, Micropterus salmoides, from a brackish marsh and freshwater lake in southcentral Louisiana. Laboratory experiments were conducted to evaluate plasma chemistry and gill ATPase activities of largemouth bass from both locations exposed to 0, 4, 8, and 12‰ salinity. No significant differences in physiological responses were detected between marsh and freshwater largemouth bass exposed to 0, 4, or 12‰. Exposure to 12‰ salinity resulted in osmotic stress in largemouth bass from both locations. At 8‰, marsh largemouth bass had significantly higher plasma solutes and lower gill ATPase activities than freshwater fish. Different physiological responses by marsh and freshwater largemouth bass during exposure to 8‰ salinity indicated that marsh largemouth bass have adapted to environments of variable salinity by reducing active ion transport and tolerating elevated plasma son levels.

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