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Article

Transcriptomic Analysis Reveals Salt Tolerance Mechanisms Present in Date-Plum Persimmon Rootstock (Diospyros lotus L.)

1
Instituto Valenciano de Investigaciones Agrarias (IVIA), Carretera CV-315 Km 10.7, 46113 Valencia, Spain
2
Umeå Plant Science Centre (UPSC), KBC-Building, Linnaeus väg 6, Umeå University, 90736 Umeå, Sweden
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(11), 1703; https://doi.org/10.3390/agronomy10111703
Received: 6 October 2020 / Revised: 26 October 2020 / Accepted: 30 October 2020 / Published: 3 November 2020
(This article belongs to the Special Issue Mineral Nutrition of Fruit Trees)
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. View Full-Text
Keywords: Diospyros lotus L.; salt stress; ion transport; persimmon; transmembrane electrochemical gradient; chloride channels; thermospermine Diospyros lotus L.; salt stress; ion transport; persimmon; transmembrane electrochemical gradient; chloride channels; thermospermine
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MDPI and ACS Style

Gil-Muñoz, F.; Delhomme, N.; Quiñones, A.; Naval, M.d.M.; Badenes, M.L.; García-Gil, M.R. Transcriptomic Analysis Reveals Salt Tolerance Mechanisms Present in Date-Plum Persimmon Rootstock (Diospyros lotus L.). Agronomy 2020, 10, 1703. https://doi.org/10.3390/agronomy10111703

AMA Style

Gil-Muñoz F, Delhomme N, Quiñones A, Naval MdM, Badenes ML, García-Gil MR. Transcriptomic Analysis Reveals Salt Tolerance Mechanisms Present in Date-Plum Persimmon Rootstock (Diospyros lotus L.). Agronomy. 2020; 10(11):1703. https://doi.org/10.3390/agronomy10111703

Chicago/Turabian Style

Gil-Muñoz, Francisco, Nicolas Delhomme, Ana Quiñones, Maria d.M. Naval, Maria L. Badenes, and M. R. García-Gil. 2020. "Transcriptomic Analysis Reveals Salt Tolerance Mechanisms Present in Date-Plum Persimmon Rootstock (Diospyros lotus L.)" Agronomy 10, no. 11: 1703. https://doi.org/10.3390/agronomy10111703

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