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Cytosolic calcium and pH signaling in plants under salinity stress
Stockholm University, Faculty of Science, Department of Botany. (Sylvia Lindberg)
Stockholm University, Faculty of Science, Department of Botany. (Sylvia Lindberg)
2010 (English)In: Plant signaling and behavior, Vol. 5, no 3, 1-7 p.Article in journal (Refereed) Published
Abstract [en]

Calcium is one of the essential nutrients for growth and development of plants. It is an

important component of various structures in cell wall and membranes. Besides some

fundamental roles under normal condition, calcium functions as a major secondarymessenger

molecule in plants under different developmental cues and various stress

conditions including salinity stress. Also changes in cytosolic pH, pHcyt, either individually,

or in coordination with changes in cytosolic Ca2+ concentration, [Ca2+]cyt, evoke a wide range

of cellular functions in plants including signal transduction in plant-defense responses against

stresses. It is believed that salinity stress, like other stresses, is perceived at cell membrane,

either extra cellular or intracellular, which then triggers an intracellular-signaling cascade

including the generation of secondary messenger molecules like Ca2+ and protons. The

variety and complexity of Ca2+ and pH signaling result from the nature of the stresses as well

as the tolerance level of the plant species against that specific stress. The nature of changes in

[Ca2+]cyt concentration, in terms of amplitude, frequency and duration, is likely very

important for decoding the specific downstream responses for salinity stress tolerance in

planta. It has been observed that the signatures of [Ca2+]cyt and pH differ in various studies

Place, publisher, year, edition, pages
Austin USA: Landes Bioscience , 2010. Vol. 5, no 3, 1-7 p.
Keyword [en]
cytosolic calcium, ionic toxicity, osmotic stress, pH, salinity stress, salt tolerance, signaling
National Category
Research subject
Physiological Botany
URN: urn:nbn:se:su:diva-32353OAI: diva2:280108
Salinity stress and crop responses
Available from: 2009-12-08 Created: 2009-12-08 Last updated: 2010-10-29Bibliographically approved

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