Kinetics of shoot surface water uptake and its effects on leaf hydraulic conductance in Avicennia marina

There has been debate over the significance of shoot surface water uptake (SSWU) in plants. We hypothesized that this form of water uptake may lead to recovery of leaf hydraulic conductance lost through dehydration, and that dehydration itself may affect the conductance to SSWU. We tested these hypotheses by tracking changes in leaf water potential through time in excised branches of the grey mangrove, Avicennia marina. Using pressure-volume data gathered from the same tree population, we estimated the volume of water absorbed through the leaf surface during SSWU, and the volume of water taken up through the petiole before and after SSWU. The method is a modified version of the rehydration-kinetics method (Brodribb and Holbrook, 2003). Full details are available at: Fuenzalida, T.I., Bryant, C.J., Ovington, L.I., Yoon, H.‐J., Oliveira, R.S., Sack, L. and Ball, M.C. (2019), Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina. New Phytol, 224: 1504-1511. doi:10.1111/nph.16126 Results show a decline in the conductance to SSWU with rehydration time, but not with dehydration, and full recovery of leaf hydraulic conductance through SSWU. This research was funded by the Australian Research Council through grant DP180102969: Top-down rehydration: the role of multiple water sources in maintaining hydraulic function of mangroves along gradients in salinity and aridity.
Type
Collection
Title
Kinetics of shoot surface water uptake and its effects on leaf hydraulic conductance in Avicennia marina
Brief Title
Shoot surface water uptake and its effects in leaf hydraulic function
Alternate Title
Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina
Collection Type
Dataset
Access Privileges
Division of Plant Science
DOI - Digital Object Identifier
10.25911/s78c-6w84
Metadata Language
English
Data Language
English
Significance Statement
The study shows full recovery of leaf hydraulic conductance occurs through shoot surface water uptake.
Brief Description
This dataset characterises the kinetics of water absorption through excised shoots of the grey mangrove, Avicennia marina, and quantifies the effects of this form of water uptake on the recovery of leaf hydraulic conductance. Results show that shoot surface water uptake declines with rehydration time but not with dehydration, and that it can lead to full recovery of leaf hydraulic conductance.
Full Description
There has been debate over the significance of shoot surface water uptake (SSWU) in plants. We hypothesized that this form of water uptake may lead to recovery of leaf hydraulic conductance lost through dehydration, and that dehydration itself may affect the conductance to SSWU. We tested these hypotheses by tracking changes in leaf water potential through time in excised branches of the grey mangrove, Avicennia marina. Using pressure-volume data gathered from the same tree population, we estimated the volume of water absorbed through the leaf surface during SSWU, and the volume of water taken up through the petiole before and after SSWU. The method is a modified version of the rehydration-kinetics method (Brodribb and Holbrook, 2003). Full details are available at: Fuenzalida, T.I., Bryant, C.J., Ovington, L.I., Yoon, H.‐J., Oliveira, R.S., Sack, L. and Ball, M.C. (2019), Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina. New Phytol, 224: 1504-1511. doi:10.1111/nph.16126 Results show a decline in the conductance to SSWU with rehydration time, but not with dehydration, and full recovery of leaf hydraulic conductance through SSWU. This research was funded by the Australian Research Council through grant DP180102969: Top-down rehydration: the role of multiple water sources in maintaining hydraulic function of mangroves along gradients in salinity and aridity.
Contact Email
tomas.fuenzalida@anu.edu.au
Contact Address
Rm W308/4, Level 3, RN Robertson Building (46), The Australian National University ACT 2600 Australia
Contact Phone Number
+61 2 6125 8463
Principal Investigator
Tomás I. Fuenzalida
Supervisors
Marilyn C. Ball
Collaborators
Lawren Sack; Rafael S. Oliveira; Leuwin Ovington; Callum J. Bryant; Hwan-Jin Yoon
Fields of Research
060203 - Ecological Physiology; 060705 - Plant Physiology
Socio-Economic Objective
960802 - Coastal and Estuarine Flora, Fauna and Biodiversity; 970106 - Expanding Knowledge in the Biological Sciences
Keywords
Drought; capacitance; foliar water uptake; leaf hydraulic conductance; pressure-volume curve; recovery; shoot water uptake
Type of Research Activity
Pure basic research
Date Coverage
2019-04
2018-05
Time Period
2018-05 to 2019-04
Geospatial Location
-16.2889045, 145.4160471
text
Date of data creation
2018-05
Year of data publication
2019
Creator(s) for Citation
Fuenzalida
Tomás I.
Ball
Marilyn C.
Publisher for Citation
2019
Publications
10.1111/nph.16126
Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina Fuenzalida, T.I., Bryant, C.J., Ovington, L.I., Yoon, H.‐J., Oliveira, R.S., Sack, L. and Ball, M.C. (2019), Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina. New Phytol, 224: 1504-1511. doi:10.1111/nph.16126
Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina
doi
Related Websites
Discovery Projects - Grant ID: DP180102969
http://purl.org/au-research/grants/arc/DP180102969
Access Rights
Open access allowed
Access Rights Type
Open
Licence Type
CC-BY-NC-ND - Attribution-NonCommercial-NoDervis (Version 4.0)
Retention Period
Indefinitely
Disposal Date
None
Extent or Quantity
1
Data Size
112 KB
Data Management Plan
No

Download data files

Number of files: 1

Size: 112 KB

Identifier: anudc:6026

Status: Published
Published to:
  • Australian National University
  • Australian National Data Service
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