Claim · model-written summary
The major tolerance mechanisms in these species limit sodium uptake and accumulation in active leaves.
- Taxon
- Oryza sativa
Oryza sativae0 - Outcome
- major tolerance mechanismse1
- Qualifier
- limiting sodium uptake and accumulation in active leavese1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivated rice species (Oryza sativa L. and O. glaberrima Steud.)”
e1“the major tolerance mechanisms found in these species are those contributing to limiting sodium uptake and accumulation in active leaves”
Title
John Damien Platten; James A Egdane; Abdelbagi M Ismail BMC Plant Biology 2013. doi:10.1186/1471-2229-13-32
Other claims from this paper (14)
- Observation Many of the 103 O. sativa accessions were newly identified as salt tolerant, with moderate to high tolerance of high salinity.
- Observation O. glaberrima shows significant salt tolerance, reported for the first time.
- Association Leaf blade Na+ concentration correlates highly with the SES senescence score across nearly all accessions of both species.
- Association Leaf Na+ concentration is only very weakly associated with cultivar-groups.
- Association Leaf Na+ concentration is generally strongly associated with the OsHKT1;5 allele.
- Observation Seven major and three minor alleles of OsHKT1;5 were identified.
- Association The Aromatic OsHKT1;5 allele gives the highest Na+ exclusion.
- Association The Japonica OsHKT1;5 allele gives the least Na+ exclusion.
- Observation A number of accessions do not follow the association with the OsHKT1;5 allele.
- Mechanism The exceptions probably reflect additional highly effective Na+ exclusion mechanisms.
- Observation Two landraces, one from Thailand and one from Senegal, show high tissue tolerance.
- Observation Significant variation in salinity tolerance exists within both cultivated Oryza species.
- Observation Genetic variation appears to exist for several mechanisms that affect leaf Na+ concentration.
- Recommendation The identified mechanisms show great promise for improving rice salt tolerance over current donors.