Investigating foliar-applied phosphorus absorption and translocation in barley using bioimaging techniques /

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Arsic, Maja - Thesis.pdf (14 MB)
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2022

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Arsic, Maja

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thesis

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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.

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University of South Australia. UniSA STEM
UniSA STEM

Dissertation Note

Thesis (Dual award PhD(Environmental Remediation and Public Health))--University of Copenhagen & University of South Australia, 2022.

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Copyright 2022 Maja Arsic

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1 ethesis (ix, 130 pages) :
colour illustrations.
Includes bibliographical references (pages 129-130)

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506 0#$fstar $2Unrestricted online access

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