Antioxidant metabolism variation associated with alkali-salt tolerance in thirty switchgrass (Panicum virgatum) lines

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dc.contributor.authorHu, Guofuen
dc.contributor.authorLiu, Yimingen
dc.contributor.authorDuo, Tianqien
dc.contributor.authorZhao, Bingyu Y.en
dc.contributor.authorCui, Guowenen
dc.contributor.authorJi, Jingen
dc.contributor.authorKuang, Xiaoen
dc.contributor.authorErvin, Erik H.en
dc.contributor.authorZhang, Xunzhongen
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessioned2019-05-31T16:51:02Zen
dc.date.available2019-05-31T16:51:02Zen
dc.date.issued2018-06-25en
dc.description.abstractSoil salinization is a major factor limiting crop growth and development in many areas. Switchgrass (Panicum virgatum L.) is an important warm-season grass species used for biofuel production. The objective of this study was to investigate antioxidant metabolism, proline, and protein variation associated with alkali-salt tolerance among 30 switchgrass lines and identify metabolic markers for evaluating alkali-salt tolerance of switchgrass lines. The grass lines were transplanted into plastic pots containing fine sand. When the plants reached E5 developmental stage, they were subjected to either alkali-salt stress treatment (150 mM Na+ and pH of 9.5) or control (no alkali-salt stress) for 20 d. The 30 switchgrass lines differed in alkali-salt tolerance as determined by the level of leaf malondialdehyde (MDA), antioxidant enzyme activity [(superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX)], proline and protein. Alkali-salt stress increased MDA, proline, SOD, reduced CAT activity, but its effect on protein and APX varied depending on lines. Wide variations in the five parameters existed among the 30 lines. In general, the lines with higher CAT activity and lower proline content under alkali-salt stress had less MDA, exhibiting better alkali-salt tolerance. Among the five parameters, CAT can be considered as valuable metabolic markers for assessment of switchgrass tolerance to alkali-salt stress.en
dc.description.notesThis research was funded by The Natural Science Fund of Heilongjiang Province (LC2016009) (GH) and U.S. Department of Energy and U.S. Department of Agriculture's Plant Feedstocks Genomics for Bioenergy Program (DE-SC0008338 to XZ and BZ). The study was also partially supported by Virginia Tech's Virginia Agricultural Experiment Station (VA135872 to BZ).en
dc.description.sponsorshipNatural Science Fund of Heilongjiang Province [LC2016009]; U.S. Department of Energy; U.S. Department of Agriculture's Plant Feedstocks Genomics for Bioenergy Program [DE-SC0008338]; Virginia Tech's Virginia Agricultural Experiment Station [VA135872]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0199681en
dc.identifier.eissn1932-6203en
dc.identifier.issue6en
dc.identifier.othere0199681en
dc.identifier.pmid29940015en
dc.identifier.urihttp://hdl.handle.net/10919/89665en
dc.identifier.volume13en
dc.language.isoenen
dc.publisherPLOSen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleAntioxidant metabolism variation associated with alkali-salt tolerance in thirty switchgrass (Panicum virgatum) linesen
dc.title.serialPLOS ONEen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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