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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(10): 841-849
DOI: https://doi.org/10.20546/ijcmas.2020.910.100


Physiology of Calcium Nutrition in Plants
Mainu Hazarika1* and Praveen Kumar2
1Department of Horticulture, Assam Agricultural University, Jorhat-785 013, Assam, India
2Department of Genetics and Plant Breeding, Lovely Professional University, Phagwara- 144 411, Punjab, India
*Corresponding author
Abstract:

Calcium is an essential macro-nutrient in plants, with concentrations in the shoot ranging from 0.1 to 5% of dry wt.Ca2+ is taken up by the root and transported to the shoot in a mainly apoplastic way to avoid interference with its function as second messenger. To circumvent the casparian strip, it has to enter the cytosol of the endodermal cells via channel proteins and subsequently be exported into the apoplast via Ca2+-ATPases or Ca2+/H+anti porters. H+/Ca2+anti porters and Ca2+-ATPases, which actively deliver Ca2+ into the apoplast or intracellular stores. These channels maintain a low (Ca2+) cyt in the resting (un-stimulated) cell appropriate for Cytoplasmic metabolism,restore (Ca2+) cyt to resting levels following a (Ca2+) cyt perturbation (stimulated). Ca2+ contributes to the structure of cell wall, stability of cell membrane, photosynthetic reaction, photo-protection (D1 protein, PsbS regulated by Ca2+), stomatal movement and pollen tube growth and elongation. Calcium sensors, including calmodulin (CaM), calmodulin-like (CML) proteins, calcineurin B-like proteins (CBL), and calcium-dependent protein kinases (CDPK) helps in Ca2+ signaling pathway during stress and non-stress condition. Deficiency symptoms occur more often in developing tissue such as young leaves and fruits, due to low remobilization from old to young tissue via the phloem. This leads to a strong dependency of Ca2+ supply via the xylem. Resulting physiological disorder are tip burn in lettuce or blossom end rot in tomato. Plants deficient in calcium have been shown to be more susceptible to pathogens and exogenous calcium supply in turn has been shown to improve the plant’s resistance. Conserved microbial patterns for example PAMP initiating a signaling cascade leading to induction of downstream responses of defense gene expression. Future research will shed more light on the different functions of this important nutrient and how they are interconnected.


Keywords: Calcium nutrition, Ca2+-ATPases, Apoplastic way
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How to cite this article:

Mainu Hazarika1 and Praveen Kumar. 2020. Physiology of Calcium Nutrition in Plants.Int.J.Curr.Microbiol.App.Sci. 9(10): 841-849. doi: https://doi.org/10.20546/ijcmas.2020.910.100