Potassium (K+) is an essential mineral macronutrient abundantly present in the cytosol which, unlike other macronutrients, is not metabolized and does not integrate into macromolecules. Compared to animal cells, K+ is more abundantly present in plant cells.
Overall performance of the plant, and operation of metabolic machinery depends upon intracellular K+ homeostasis (K+ uptake and efflux) via K+ channels and transporters acting as mediators of cellular responses during plant development. Unlike animals, plants lack sodium/K+ exchangers; plant cells have developed unique transport systems for K+ accumulation and release. In Arabidopsis thaliana, 71 K+ channels and transporters have been identified and categorized into six families.
Plant adaptive responses to several abiotic and biotic stresses are mediated by regulation of intracellular K+ homeostasis. In this report, we highlight the role of K+ in abiotic and biotic stresses, features of channels and transporters responsible for its homeostasis along with its evolutionary relationship, perception and sensing mechanisms, and K+ deficiency triggering different signaling cascades.
Overall, this book covers the role of K+ in plants would be significantly helpful to research, academic community as well as students to understand the one of the major attributes of plant biology.
विषयसूची
Preface.- 1.
Introduction: Overview of Role of potassium.-
2. Potassium Homeostasis.-
3. Potassium uptake and transport system in plants.-
4. Sequence, structure and domain analysis of potassium channels and transporters.-
5. Potassium in plant growth and development.-
6. Potassium in abiotic stress.-
7. Potassium deficiency: A stress signal.- 8. Potassium perception and sensing.-
9. Emerging role of potassium in plants.-
10. Key questions and future perspective.- References.- Abbreviations.- Index.
लेखक के बारे में
Dr. Girdhar Kumar Pandey, Assoc. Professor
Delhi University South Campus
Dept. of Molecular Biology
Benito Juarez Road, Dhaula Kuan
110021 New Delhi
India
Swati Mahiwal, M.Sc.
Delhi University South Campus
Department of Plant Molecular Biology
Benito Juarez, Dhaula Kuan
110021 New Delhi
India
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