18O isotopic labelling and soil water content fluctuations validate the hydraulic lift phenomena for C3 grass species in drought conditions

Simple item page
dc.citation.volume11
dc.contributor.authorOliveira BA
dc.contributor.authorLópez IF
dc.contributor.authorCranston LM
dc.contributor.authorKemp PD
dc.contributor.authorDonaghy DJ
dc.contributor.authorDörner J
dc.contributor.authorLópez-Villalobos N
dc.contributor.authorGarcía-Favre J
dc.contributor.authorOrdóñez IP
dc.contributor.authorVan Hale R
dc.date.accessioned2024-07-12T01:09:58Z
dc.date.available2024-07-12T01:09:58Z
dc.date.issued2024-02-29
dc.description.abstractHydraulic lift is a functional characteristic observed in some plant species, often associated with their ability to withstand drought conditions. It involves capturing water from deep soil layers and redistributing it to shallower soil layers through the plant's roots. Bromus valdivianus Phil., Dactylis glomerata L., and Lolium perenne L. may perform hydraulic lift at varying rates. Using both direct (isotopic labelling - δ18O) and indirect (soil water content sensors) techniques, the study assessed and validated the hydraulic lift under extreme drought conditions on the soil top layer (below permanent wilting point), maintaining the bottom layer at high (20–25% filed capacity [FC]) and low (80–85% FC) levels of soil water restriction. Above- and below-ground biomass growth and morpho-physiological responses were evaluated. All species displayed some degree of hydraulic lift, with significant differences observed in the isotopic analysis and soil water content (p > 0.05). This illustrates that water was redistributed from the deep to shallower soil layer and validates that the hydraulic lift phenomenon is occurring in these C3 grasses. Bromus valdivianus presented the highest δ18O values (25.05‰) and highest increases in soil water content (µ=0.00626 m3 m−3; five events). Bromus valdivianus had a dry matter ratio of approximately 4:1 (0–20cm:20–40 cm). In contrast, L. perenne and D. glomerata had approximately 6:1 and 5:1, respectively. This difference in root morphology may explain the higher rate of hydraulic lift observed in B. valdivianus relative to L. perenne and D. glomerata. This paper validates the occurrence and provides initial insights into the hydraulic lift process occurrence of temperature grass species.
dc.description.confidentialfalse
dc.edition.editionMarch 2024
dc.identifier.citationOliveira BA, López IF, Cranston LM, Kemp PD, Donaghy DJ, Dörner J, López-Villalobos N, García-Favre J, Ordóñez IP, Van Hale R. (2024). <sup>18</sup>O isotopic labelling and soil water content fluctuations validate the hydraulic lift phenomena for C<inf>3</inf> grass species in drought conditions. Plant Stress. 11.
dc.identifier.doi10.1016/j.stress.2024.100414
dc.identifier.eissn2667-064X
dc.identifier.elements-typejournal-article
dc.identifier.issn2667-064X
dc.identifier.number100414
dc.identifier.piiS2667064X2400068X
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70162
dc.languageEnglish
dc.publisherElsevier B.V.
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S2667064X2400068X
dc.relation.isPartOfPlant Stress
dc.rights(c) 2024 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.title18O isotopic labelling and soil water content fluctuations validate the hydraulic lift phenomena for C3 grass species in drought conditions
dc.typeJournal article
pubs.elements-id487287
pubs.organisational-groupCollege of Health
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Published version.pdf
Size:
3.03 MB
Format:
Adobe Portable Document Format
Description:
487287 PDF.pdf
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
9.22 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles