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dc.contributor.authorSchilling, Rhiannon K.
dc.contributor.authorMarschner, Petra
dc.contributor.authorShavrukov, Yuri N.
dc.contributor.authorBerger, Bettina
dc.contributor.authorTester, Mark A.
dc.contributor.authorRoy, Stuart John
dc.contributor.authorPlett, Darren Craig
dc.date.accessioned2015-08-03T11:35:43Z
dc.date.available2015-08-03T11:35:43Z
dc.date.issued2013-11-22
dc.identifier.issn14677644
dc.identifier.pmid24261956
dc.identifier.doi10.1111/pbi.12145
dc.identifier.urihttp://hdl.handle.net/10754/563098
dc.description.abstractCereal varieties with improved salinity tolerance are needed to achieve profitable grain yields in saline soils. The expression of AVP1, an Arabidopsis gene encoding a vacuolar proton pumping pyrophosphatase (H+-PPase), has been shown to improve the salinity tolerance of transgenic plants in greenhouse conditions. However, the potential for this gene to improve the grain yield of cereal crops in a saline field has yet to be evaluated. Recent advances in high-throughput nondestructive phenotyping technologies also offer an opportunity to quantitatively evaluate the growth of transgenic plants under abiotic stress through time. In this study, the growth of transgenic barley expressing AVP1 was evaluated under saline conditions in a pot experiment using nondestructive plant imaging and in a saline field trial. Greenhouse-grown transgenic barley expressing AVP1 produced a larger shoot biomass compared to segregants, as determined by an increase in projected shoot area, when grown in soil with 150 mm NaCl. This increase in shoot biomass of transgenic AVP1 barley occurred from an early growth stage and also in nonsaline conditions. In a saline field, the transgenic barley expressing AVP1 also showed an increase in shoot biomass and, importantly, produced a greater grain yield per plant compared to wild-type plants. Interestingly, the expression of AVP1 did not alter barley leaf sodium concentrations in either greenhouse- or field-grown plants. This study validates our greenhouse-based experiments and indicates that transgenic barley expressing AVP1 is a promising option for increasing cereal crop productivity in saline fields. © 2013 Society for Experimental Biology, Association of Applied Biologists and John Wiley & Sons Ltd.
dc.publisherWiley
dc.subjectAVP1
dc.subjectBarley
dc.subjectGM field trials
dc.subjectGrain yield
dc.subjectNondestructive imaging
dc.subjectSalinity
dc.titleExpression of the Arabidopsis vacuolar H+-pyrophosphatase gene (AVP1) improves the shoot biomass of transgenic barley and increases grain yield in a saline field
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentBioscience Program
dc.contributor.departmentDesert Agriculture Initiative
dc.contributor.departmentPlant Science
dc.contributor.departmentPlant Science Program
dc.contributor.departmentThe Salt Lab
dc.identifier.journalPlant Biotechnology Journal
dc.contributor.institutionAustralian Centre for Plant Functional Genomics, Adelaide, SA, Australia
dc.contributor.institutionSchool of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, Australia
dc.contributor.institutionThe Plant Accelerator, Australian Plant Phenomics Facility, The University of Adelaide, Adelaide, SA, Australia
kaust.personTester, Mark A.
dc.date.published-online2013-11-22
dc.date.published-print2014-04


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