Investigating foliar-applied phosphorus absorption and translocation in barley using bioimaging techniques /
Files
(Published version)
Date
2022
Authors
Arsic, Maja
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
thesis
Citation
Statement of Responsibility
Conference Name
Abstract
Foliar-applied phosphorus could more sustainably meet plant nutrient needs. This thesis developed bioimaging techniques to visualize foliar-applied phosphorus (P) absorption pathways and translocation in barley. LA-ICP-MS scans confirmed that vanadate was an appropriate P tracer. Fiber cells and trichomes were key P entry points, however radioisotopes showed trichome density was not related to quantitative absorption differences in four barley cultivars. A non-photochemical quenching assay was developed as a proxy for leaf P status. Foliar-applied P restored functionality in P-deficient spring barley plants within 24 hours, although P-deficiency returned within a week due to translocation. The methods also revealed that foliar-applied manganese (Mn) was more effective at restoring nutrient functionality in Mn-deficient plants than P applications in P-deficient plants.
School/Discipline
University of South Australia. UniSA STEM
UniSA STEM
UniSA STEM
Dissertation Note
Thesis (Dual award PhD(Environmental Remediation and Public Health))--University of Copenhagen & University of South Australia, 2022.
Provenance
Copyright 2022 Maja Arsic
Description
1 ethesis (ix, 130 pages) :
colour illustrations.
Includes bibliographical references (pages 129-130)
colour illustrations.
Includes bibliographical references (pages 129-130)
Access Status
506 0#$fstar $2Unrestricted online access