Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/15707
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dc.contributor.authorHaling, Rebeccaen
dc.contributor.authorBrown, Lawrie Ken
dc.contributor.authorBengough, A Glynen
dc.contributor.authorValentine, Tracy Aen
dc.contributor.authorWhite, Philip Jen
dc.contributor.authorYoung, Iainen
dc.contributor.authorGeorge, Timothy Sen
dc.date.accessioned2014-09-22T14:31:00Z-
dc.date.issued2014-
dc.identifier.citationPlanta, 239(3), p. 643-651en
dc.identifier.issn1432-2048en
dc.identifier.issn0032-0935en
dc.identifier.urihttps://hdl.handle.net/1959.11/15707-
dc.description.abstractSelecting plants with improved root hair growth is a key strategy for improving phosphorus-uptake efficiency in agriculture. While significant inter- and intraspecific variation is reported for root hair length, it is not known whether these phenotypic differences are exhibited under conditions that are known to affect root hair elongation. This work investigates the effect of soil strength, soil water content (SWC) and soil particle size (SPS) on the root hair length of different root hair genotypes of barley. The root hair and rhizosheath development of five root hair genotypes of barley ('Hordeum vulgare' L.) was compared in soils with penetrometer resistances ranging from 0.03 to 4.45 MPa (dry bulk densities 1.2-1.7 g cm⁻³). A "short" (SRH) and "long" root hair (LRH) genotype was selected to further investigate whether differentiation of these genotypes was related to SWC or SPS when grown in washed graded sand. In low-strength soil (<1.43 MPa), root hairs of the LRH genotype were on average 25 % longer than that of the SRH genotype. In high-strength soil, root hair length of the LRH genotype was shorter than that in low-strength soil and did not differ from that of the SRH genotype. Root hairs were shorter in wetter soils or soils with smaller particles, and again SRH and LRH did not differ in hair length. Longer root hairs were generally, but not always, associated with larger rhizosheaths, suggesting that mucilage adhesion was also important. The root hair growth of barley was found to be highly responsive to soil properties and this impacted on the expression of phenotypic differences in root hair length. While root hairs are an important trait for phosphorus acquisition in dense soils, the results highlight the importance of selecting multiple and potentially robust root traits to improve resource acquisition in agricultural systems.en
dc.languageenen
dc.publisherSpringeren
dc.relation.ispartofPlantaen
dc.titleRoot hair length and rhizosheath mass depend on soil porosity, strength and water content in barley genotypesen
dc.typeJournal Articleen
dc.identifier.doi10.1007/s00425-013-2002-1en
dc.subject.keywordsSoil Biologyen
dc.subject.keywordsSoil Physicsen
dc.subject.keywordsCrop and Pasture Nutritionen
local.contributor.firstnameRebeccaen
local.contributor.firstnameLawrie Ken
local.contributor.firstnameA Glynen
local.contributor.firstnameTracy Aen
local.contributor.firstnamePhilip Jen
local.contributor.firstnameIainen
local.contributor.firstnameTimothy Sen
local.subject.for2008050305 Soil Physicsen
local.subject.for2008050303 Soil Biologyen
local.subject.for2008070306 Crop and Pasture Nutritionen
local.subject.seo2008829999 Plant Production and Plant Primary Products not elsewhere classifieden
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.emailrhaling@une.edu.auen
local.profile.emailiyoung4@une.edu.auen
local.profile.emailtimothy.george@hutton.ac.uken
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20140916-101240en
local.publisher.placeGermanyen
local.format.startpage643en
local.format.endpage651en
local.peerreviewedYesen
local.identifier.volume239en
local.identifier.issue3en
local.contributor.lastnameHalingen
local.contributor.lastnameBrownen
local.contributor.lastnameBengoughen
local.contributor.lastnameValentineen
local.contributor.lastnameWhiteen
local.contributor.lastnameYoungen
local.contributor.lastnameGeorgeen
dc.identifier.staffune-id:rhalingen
dc.identifier.staffune-id:iyoung4en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:15944en
local.identifier.handlehttps://hdl.handle.net/1959.11/15707en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleRoot hair length and rhizosheath mass depend on soil porosity, strength and water content in barley genotypesen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorHaling, Rebeccaen
local.search.authorBrown, Lawrie Ken
local.search.authorBengough, A Glynen
local.search.authorValentine, Tracy Aen
local.search.authorWhite, Philip Jen
local.search.authorYoung, Iainen
local.search.authorGeorge, Timothy Sen
local.uneassociationUnknownen
local.identifier.wosid000331648500009en
local.year.published2014en
local.subject.for2020410605 Soil physicsen
local.subject.for2020410603 Soil biologyen
local.subject.for2020300407 Crop and pasture nutritionen
local.subject.seo2020269999 Other plant production and plant primary products not elsewhere classifieden
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