ArticleBMC plant biology2026
Genome-wide identification of the NHX gene family in sweet cherry and functional dissection of PavNHX37, a key salt tolerance gene.
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSoil salinization severely limits sweet cherry (Prunus avium L.) growth and productivity, yet the NHX (Na
resultsThrough genome‑wide identification, we identified 37 PavNHX genes unevenly distributed on eight chromosomes. Subcellular localization predictions revealed 21 PavNHX proteins on the cell membrane and 16 in the vacuole. Phylogenetic analysis divided the family into three groups; Group I shared homologs with Arabidopsis, indicating evolutionary conservation. qRT‑PCR under salt stress showed that PavNHX37 was the most strongly induced gene (8.9‑fold at 150 mM NaCl), and its Cell membrane localization was experimentally confirmed. Stable overexpression of PavNHX37 in Nicotiana benthamiana significantly improved salt tolerance: transgenic lines exhibited lower Na
conclusionThis study provides the first systematic characterization of the NHX family in sweet cherry and demonstrates that PavNHX37 enhances salt tolerance by maintaining Na
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