Differential metabolite profiles and salinity tolerance between two genetically related brown-seeded and yellow-seeded Brassica carinata lines

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DOIResolve DOI: http://doi.org/10.1016/j.plantsci.2012.09.011
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TypeArticle
Journal titlePlant Science
ISSN01689452
Volume198
Pages1726; # of pages: 10
SubjectBiorefinery; Brassica carinata; Ethiopian mustard; marginal land; Na₂SO₄ tolerance; stress metabolism
AbstractBrassica carinata (Ethiopian mustard) has previously been identified as a potential crop species suitable for marginal land in the North American prairies due to its relatively high salt tolerance. Two genetically related B. carinata lines with brown-seeded (BS) and yellow-seeded (YS) phenotypes were assessed for their tolerance to sodium sulfate. Specifically, each line was greenhouse-grown under 0, 50 and 100 mM of salt, and analyzed after four weeks and eight weeks of treatment. Generally, the height of the BS line was greater than the YS line under both salt treatments, indicating enhanced salt tolerance of the BS line. NMR-based metabolite profiling and PCA analyses indicated a more pronounced shift in key stem metabolites after four weeks of treatment with the YS line compared to the BS line. For example, tryptophan and formate levels increased in the YS line after four weeks of 100 mM salt treatment, while proline and threonine levels varied uniquely compared to other metabolites of the lines. Together, the data indicate that the brown-seeded line has greater sodium tolerance than the yellow-seed line, provide clues to the biochemical underpinnings for the phenotypic variation, and highlight the utility of B. carinata as a biorefinery crop for saline land.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationNational Research Council Canada; Aquatic and Crop Resource Development
Peer reviewedYes
NRC number55430
NPARC number21268504
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Record identifier16378d0c-cf76-4ab5-91f1-7901940bcb5a
Record created2013-09-03
Record modified2016-05-09
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