Differences in aluminium accumulation and resistance between genotypes of the genus Fagopyrum

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dc.identifier.uri http://dx.doi.org/10.15488/780
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/804
dc.contributor.author Klug, B.
dc.contributor.author Kirchner, Thomas W.
dc.contributor.author Horst, Walter Johannes
dc.date.accessioned 2016-11-30T08:58:08Z
dc.date.available 2016-11-30T08:58:08Z
dc.date.issued 2015
dc.identifier.citation Klug, B.; Kirchner, T.W.; Horst, W.J.: Differences in aluminium accumulation and resistance between genotypes of the genus Fagopyrum. In: Agronomy 5 (2015), Nr. 3, S. 418-434. DOI: 10.3390/agronomy5030418
dc.description.abstract Aluminium (Al) toxicity is a major factor reducing crop productivity worldwide. There is a broad variation in intra- and inter-specific Al resistance. Whereas the Al resistance mechanisms have generally been well explored in Al-excluding plant species, Al resistance through Al accumulation and Al tolerance is not yet well understood. Therefore, a set of 94 genotypes from three Fagopyrum species with special emphasis on F. esculentum Moench were screened, with the objective of identifying genotypes with greatly differing Al accumulation capacity. The genotypes were grown in Al-enriched peat-based substrate for 21 days. Based on the Al concentration of the xylem sap, which varied by a factor of five, only quantitative but not qualitative genotypic differences in Al accumulation could be identified. Aluminium and citrate and Al and Fe concentrations in the xylem sap were positively correlated suggesting that Fe and Al are loaded into and transported in the xylem through related mechanisms. In a nutrient solution experiment using six selected F. esculentum genotypes differing in Al and citrate concentrations in the xylem sap the significant correlation between Al and iron transport in the xylem could be confirmed. Inhibition of root elongation by Al was highly significantly correlated with root oxalate-exudation and leaf Al accumulation. This suggests that Al-activated oxalate exudation and rapid transport of Al to the shoot are prerequisites for the protection of the root apoplast from Al injury and thus overall Al resistance and Al accumulation in buckwheat. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartof Agronomy 5 (2015), Nr. 3
dc.relation.ispartofseries Agronomy
dc.rights CC BY 4.0 Unported
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.subject Aluminum eng
dc.subject Buckwheat eng
dc.subject Citrate translocation eng
dc.subject Genotypic differences eng
dc.subject Oxalate exudation eng
dc.subject Tolerance eng
dc.subject.ddc 500 | Naturwissenschaften ger
dc.subject.ddc 570 | Biowissenschaften, Biologie ger
dc.title Differences in aluminium accumulation and resistance between genotypes of the genus Fagopyrum eng
dc.type article
dc.type Text
dc.relation.issn 2073-4395
dc.relation.doi 10.3390/agronomy5030418
dc.bibliographicCitation.issue 3
dc.bibliographicCitation.volume 5
dc.bibliographicCitation.firstPage 418
dc.bibliographicCitation.lastPage 434
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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