Drought Stress alters Solute Allocation in Broadleaf Dock (Rumex obtusifolius)

Gilgen, Anna Katarina; Feller, Urs (2013). Drought Stress alters Solute Allocation in Broadleaf Dock (Rumex obtusifolius). Weed Science, 61(1), pp. 104-108. Champaign, Ill.: Weed Science Society of America 10.1614/WS-D-12-00074.1

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According to climate models, drier summers must be expected more frequently in Central Europe during the next decades, which may influence plant performance and competition in grassland. The overall source–sink relations in plants, especially allocation of solutes to above- and below-ground parts, may be affected by drought. To investigate solute export from a given leaf of broadleaf dock, a solution containing 57Co and 65Zn was introduced through a leaf flap. The export from this leaf was detected by analysing radionuclide contents in various plant parts. Less label was allocated to new leaves and more to roots under drought. The observed alterations of source–sink relations in broadleaf dock were reversible during a subsequent short period of rewatering. These findings suggest an increased resource allocation to roots under drought improving the functionality of the plants.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant nutrition (discontinued)
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Gilgen, Anna Katarina and Feller, Urs

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0043-1745

Publisher:

Weed Science Society of America

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

23 Oct 2013 15:37

Last Modified:

25 Feb 2015 03:51

Publisher DOI:

10.1614/WS-D-12-00074.1

Uncontrolled Keywords:

Climate change, grassland, phloem transport, recovery, water limitation

BORIS DOI:

10.7892/boris.38700

URI:

https://boris.unibe.ch/id/eprint/38700

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