Compression wood has little impact on the water relations of Douglas-fir (Pseudotsuga menziesii) seedlings despite a large effect on shoot hydraulic properties Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/w6634412n

The definitive version of this article is available at  www.newphytologist.com.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • • Compression wood has been shown to reduce stem permeability, but it is not known to what extent it affects leaf-level processes. Here, we report whole-plant hydraulic properties of Douglas-fir (Pseudotsuga menziesii) seedlings induced to form varying amounts of compression wood. • Seedlings were grown under three bending treatments to assess the impact of compression wood on hydraulic properties, including stomatal conductance (gs), above-ground shoot conductance (Kl(abg)), and both specific and leaf area-specific conductivity (ks and kl, respectively). • Kl(abg) was significantly lower (50% reduction) in severely bent seedlings than in controls. Similarly, both ks and kl of the main axis were significantly reduced (by 52% and 46%, respectively) in severely bent seedlings relative to controls. Seedlings in the moderate bending treatments had ks and kl that were intermediate between controls and severe bending. • Despite clear differences in above-ground shoot hydraulic properties, severely bent seedlings maintained the same water potentials as controls and had similar diurnal patterns of gs. This suggests that when the entire soil–plant–atmosphere continuum is considered, even a severe reduction in stem ks caused by compression wood has little impact on leaf-level processes.
Resource Type
Date Available
Date Issued
Citation
  • Spicer, R. and B. L. Gartner. 2002. Compression wood has little impact on the water relations of Douglas-fir (Pseudotsuga menziesii) seedlings despite a large effect on shoot hydraulic properties. New Phytologist 154:633-640.
Academic Affiliation
Keyword
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2010-08-03T22:00:58Z (GMT). No. of bitstreams: 1 02-Spicer-CW_Seedlings.pdf: 189419 bytes, checksum: 78120d506fba13d7d6f4ded61173049c (MD5) Previous issue date: 2002
  • description.provenance : Approved for entry into archive by Sue Kunda(sue.kunda@oregonstate.edu) on 2010-08-03T22:00:58Z (GMT) No. of bitstreams: 1 02-Spicer-CW_Seedlings.pdf: 189419 bytes, checksum: 78120d506fba13d7d6f4ded61173049c (MD5)
  • description.provenance : Submitted by Barbara Lachenbruch (barb.lachenbruch@oregonstate.edu) on 2010-08-02T23:11:32Z No. of bitstreams: 1 02-Spicer-CW_Seedlings.pdf: 189419 bytes, checksum: 78120d506fba13d7d6f4ded61173049c (MD5)

Relationships

In Administrative Set:
Last modified: 07/07/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items