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Genome-Wide Identification and Analysis of Arabidopsis Sodium Proton Antiporter (NHX) and Human Sodium Proton Exchanger (NHE) Homologs in Sorghum bicolor

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Relation http://oar.icrisat.org/10660/
http://dx.doi.org/10.3390/genes9050236
10.3390/genes9050236
 
Title Genome-Wide Identification and Analysis of Arabidopsis Sodium Proton Antiporter (NHX) and Human Sodium Proton Exchanger (NHE) Homologs in Sorghum bicolor
 
Creator Hima Kumari, P
Anil Kumar, S
Ramesh, K
Reddy, P S
Nagaraju, M
Bhanu Prakash, A
Shah, T
Henderson, A
Srivastava, R K
Rajasheker, G
Chitikineni, A
Varshney, R K
Rathnagiri, P
Lakshmi Narasu, M
Kavi Kishor, P B
 
Subject Sorghum
Genetics and Genomics
 
Description Na+ transporters play an important role during salt stress and development. The present study is aimed at genome-wide identification, in silico analysis of sodium-proton antiporter (NHX) and sodium-proton exchanger (NHE)-type transporters in Sorghum bicolor and their expression patterns under varied abiotic stress conditions. In Sorghum, seven NHX and nine NHE homologs were identified. Amiloride (a known inhibitor of Na+/H+ exchanger activity) binding motif was noticed in both types of the transporters. Chromosome 2 was found to be a hotspot region with five sodium transporters. Phylogenetic analysis inferred six ortholog and three paralog groups. To gain an insight into functional divergence of SbNHX/NHE transporters, real-time gene expression was performed under salt, drought, heat, and cold stresses in embryo, root, stem, and leaf tissues. Expression patterns revealed that both SbNHXs and SbNHEs are responsive either to single or multiple abiotic stresses. The predicted protein–protein interaction networks revealed that only SbNHX7 is involved in the calcineurin B-like proteins (CBL)- CBL interacting protein kinases (CIPK) pathway. The study provides insights into the functional divergence of SbNHX/NHE transporter genes with tissue specific expressions in Sorghum under different abiotic stress conditions.
 
Publisher MDPI
 
Date 2018-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10660/1/Genome-Wide%20Identification.pdf
Hima Kumari, P and Anil Kumar, S and Ramesh, K and Reddy, P S and Nagaraju, M and Bhanu Prakash, A and Shah, T and Henderson, A and Srivastava, R K and Rajasheker, G and Chitikineni, A and Varshney, R K and Rathnagiri, P and Lakshmi Narasu, M and Kavi Kishor, P B (2018) Genome-Wide Identification and Analysis of Arabidopsis Sodium Proton Antiporter (NHX) and Human Sodium Proton Exchanger (NHE) Homologs in Sorghum bicolor. Genes (TSI), 9 (5) (236). pp. 1-18. ISSN 2073-4425