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Transcriptomic Analysis Reveals Salt Tolerance Mechanisms Present in Date-Plum Persimmon Rootstock (Diospyros lotus L.)
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Umeå Plant Science Centre (UPSC).ORCID-id: 0000-0002-3053-0796
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2020 (Engelska)Ingår i: Agronomy, E-ISSN 2073-4395, Vol. 10, nr 11, artikel-id 1703Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Agriculture needs solutions for adapting crops to increasing salinity globally. Research on physiological and molecular responses activated by salinity is needed to elucidate mechanisms of salinity tolerance. Transcriptome profiling (RNA-Seq) is a powerful tool to study the transcriptomic profile of genotypes under stress conditions. Persimmon species have different levels of tolerance to salinity, this variability may provide knowledge on persimmon species and development of salt--tolerant rootstocks. In this study, we conducted a physiological and transcriptomic profiling of roots and leaves in tolerant and sensitive plants of persimmon rootstock grown under saline and control conditions. Characterization of physiological responses along with gene expression changes in roots and leaves allowed the identification of several salt tolerance mechanisms related to ion transport and thermospermine synthesis. Differences were observed in putative H+/ATPases that allow transmembrane ionic transport and chloride channel protein-like genes. Furthermore, an overexpression of thermospermine synthase found in the roots of tolerant plants may indicate that alterations in root architecture could act as an additional mechanism of response to salt stress. These results indicate that Diospyros lotus L. exhibits genetically-controlled variability for salt tolerance traits which opens potential opportunities for breeding salt-tolerant persimmon rootstocks in a Mediterranean environment challenged by drought and salinity.

Ort, förlag, år, upplaga, sidor
MDPI, 2020. Vol. 10, nr 11, artikel-id 1703
Nyckelord [en]
Diospyros lotus L, salt stress, ion transport, persimmon, transmembrane electrochemical gradient, chloride channels, thermospermine
Nationell ämneskategori
Botanik Biokemi och molekylärbiologi
Identifikatorer
URN: urn:nbn:se:umu:diva-177780DOI: 10.3390/agronomy10111703ISI: 000593583900001Scopus ID: 2-s2.0-85109090541OAI: oai:DiVA.org:umu-177780DiVA, id: diva2:1512377
Tillgänglig från: 2020-12-22 Skapad: 2020-12-22 Senast uppdaterad: 2021-07-12Bibliografiskt granskad

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Delhomme, NicolasGarcia-Gil, M. Rosario

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