Comprehensive phenotypic analysis of rice (Oryza sativa) response to salinity stress

Handle URI:
http://hdl.handle.net/10754/575073
Title:
Comprehensive phenotypic analysis of rice (Oryza sativa) response to salinity stress
Authors:
Pires, Inês S.; Negrão, Sónia; Oliveira, M. Margarida; Purugganan, Michael D.
Abstract:
Increase in soil salinity levels is becoming a major cause of crop yield losses worldwide. Rice (Oryza sativa) is the most salt-sensitive cereal crop, and many studies have focused on rice salinity tolerance, but a global understanding of this crop's response to salinity is still lacking. We systematically analyzed phenotypic data previously collected for 56 rice genotypes to assess the extent to which rice uses three known salinity tolerance mechanisms: shoot-ion independent tolerance (or osmotic tolerance), ion exclusion, and tissue tolerance. In general, our analyses of different phenotypic traits agree with results of previous rice salinity tolerance studies. However, we also established that the three salinity tolerance mechanisms mentioned earlier appear among rice genotypes and that none of them is predominant. Against the pervasive view in the literature that the K+/Na+ ratio is the most important trait in salinity tolerance, we found that the K+ concentration was not significantly affected by salt stress in rice, which puts in question the importance of K+/Na+ when analyzing rice salt stress response. Not only do our results contribute to improve our global understanding of salt stress response in an important crop, but we also use our results together with an extensive literature research to highlight some issues commonly observed in salinity stress tolerance studies and to propose solutions for future experiments.
KAUST Department:
Desert Agriculture Initiative; Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Comprehensive phenotypic analysis of rice (Oryza sativa) response to salinity stress 2015, 155 (1):43 Physiologia Plantarum
Publisher:
Wiley-Blackwell
Journal:
Physiologia Plantarum
Issue Date:
22-Jul-2015
DOI:
10.1111/ppl.12356
Type:
Article
ISSN:
00319317
Additional Links:
http://doi.wiley.com/10.1111/ppl.12356
Appears in Collections:
Articles; Desert Agriculture Initiative; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorPires, Inês S.en
dc.contributor.authorNegrão, Sóniaen
dc.contributor.authorOliveira, M. Margaridaen
dc.contributor.authorPurugganan, Michael D.en
dc.date.accessioned2015-08-18T13:42:56Zen
dc.date.available2015-08-18T13:42:56Zen
dc.date.issued2015-07-22en
dc.identifier.citationComprehensive phenotypic analysis of rice (Oryza sativa) response to salinity stress 2015, 155 (1):43 Physiologia Plantarumen
dc.identifier.issn00319317en
dc.identifier.doi10.1111/ppl.12356en
dc.identifier.urihttp://hdl.handle.net/10754/575073en
dc.description.abstractIncrease in soil salinity levels is becoming a major cause of crop yield losses worldwide. Rice (Oryza sativa) is the most salt-sensitive cereal crop, and many studies have focused on rice salinity tolerance, but a global understanding of this crop's response to salinity is still lacking. We systematically analyzed phenotypic data previously collected for 56 rice genotypes to assess the extent to which rice uses three known salinity tolerance mechanisms: shoot-ion independent tolerance (or osmotic tolerance), ion exclusion, and tissue tolerance. In general, our analyses of different phenotypic traits agree with results of previous rice salinity tolerance studies. However, we also established that the three salinity tolerance mechanisms mentioned earlier appear among rice genotypes and that none of them is predominant. Against the pervasive view in the literature that the K+/Na+ ratio is the most important trait in salinity tolerance, we found that the K+ concentration was not significantly affected by salt stress in rice, which puts in question the importance of K+/Na+ when analyzing rice salt stress response. Not only do our results contribute to improve our global understanding of salt stress response in an important crop, but we also use our results together with an extensive literature research to highlight some issues commonly observed in salinity stress tolerance studies and to propose solutions for future experiments.en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1111/ppl.12356en
dc.rightsThis is the peer reviewed version of the following article: Pires, I. S., Negrão, S., Oliveira, M. M. and Purugganan, M. D. (2015), Comprehensive phenotypic analysis of rice (Oryza sativa) response to salinity stress. Physiologia Plantarum, 155: 43–54. doi: 10.1111/ppl.12356, which has been published in final form at http://doi.wiley.com/10.1111/ppl.12356. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en
dc.titleComprehensive phenotypic analysis of rice (Oryza sativa) response to salinity stressen
dc.typeArticleen
dc.contributor.departmentDesert Agriculture Initiativeen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalPhysiologia Plantarumen
dc.eprint.versionPost-printen
dc.contributor.institutionInstituto de Tecnologia Química e Biológica António Xavier; Universidade Nova de Lisboa, and; IBET, 2781-901 Oeiras Portugalen
dc.contributor.institutionInstituto de Tecnologia Química e Biológica António Xavier; Universidade Nova de Lisboa, and; IBET, 2781-901 Oeiras Portugalen
dc.contributor.institutionDepartment of Biology and Center for Genomics and Systems Biology; New York University; New York NY USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorNegrão, Sóniaen
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