Role of Potassium in Plants

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<p>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⁺ &nbsp;is more abundantly present in plant cells.&nbsp;</p><p>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 <i>Arabidopsis thaliana,</i> 71 K⁺ channels and transporters have been identified and categorized into six families.&nbsp;</p><p>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.&nbsp;</p><p>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.</p>