The relationship between root, stem, and leaf hydraulic status and stomatal conductance during drought (field capacities: 100–25%) and drought recovery was studied in Helianthus annuus and five tree species (Populus×canadensis, Acer saccharum, A. saccharinum, Picea glauca, and Tsuga canadensis). Measurements of stomatal conductance (gs), organ water potential, and vessel embolism were performed and the following was observed: (i) cavitation only occurred in the petioles and not the roots or stems of tree species regardless of drought stress; (ii) in contrast, all H. annuus organs exhibited cavitation to an increasing degree from root to petiole; and (iii) all species initiated stomatal closure before cavitation events occurred or the expected turgor loss point was reached. After rewatering: (i) cavitated vessels in petioles of Acer species recovered whereas those of P. ×canadensis did not and leaves were shed; (ii) in H. annuus, cavitated xylem vessels were refilled in roots and petioles, but not in stems; and (iii) despite refilled embolisms in petioles of some species during drought recovery, gs never returned to pre-drought conditions. Conclusions are drawn with respect to the hydraulic segmentation hypothesis for above- and below-ground organs, and the timeline of embolism occurrence and repair is discussed.
- Home
- Search Results
- Page 1 of 1
Search for: All records
-
Total Resources2
- Resource Type
-
00020
- Availability
-
20
- Author / Contributor
- Filter by Author / Creator
-
-
Melcher, Peter J. (2)
-
Ball, Marilyn C. (1)
-
Bauerle, Taryn L. (1)
-
Brodersen, Craig (1)
-
Davis, Stephen D. (1)
-
Des Marais, David L. (1)
-
Donovan, Lisa A. (1)
-
Givnish, Thomas J. (1)
-
Hacke, Uwe G. (1)
-
Holbrook, N. Michele (1)
-
Huber, Annika E. (1)
-
Huxman, Travis (1)
-
Jacobsen, Anna L. (1)
-
Jansen, Steven (1)
-
Johnson, Daniel M. (1)
-
Koch, George W. (1)
-
Lunn, ed., John (1)
-
Maurel, Christophe (1)
-
McCulloh, Katherine A. (1)
-
McDowell, Nate G. (1)
-
- Filter by Editor
-
-
& Spizer, S. M. (0)
-
& . Spizer, S. (0)
-
& Ahn, J. (0)
-
& Bateiha, S. (0)
-
& Bosch, N. (0)
-
& Brennan K. (0)
-
& Brennan, K. (0)
-
& Chen, B. (0)
-
& Chen, Bodong (0)
-
& Drown, S. (0)
-
& Ferretti, F. (0)
-
& Higgins, A. (0)
-
& J. Peters (0)
-
& Kali, Y. (0)
-
& Ruiz-Arias, P.M. (0)
-
& S. Spitzer (0)
-
& Sahin. I. (0)
-
& Spitzer, S. (0)
-
& Spitzer, S.M. (0)
-
(submitted - in Review for IEEE ICASSP-2024) (0)
-
-
Have feedback or suggestions for a way to improve these results?
!
Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
-
Abstract -
Sack, Lawren ; Ball, Marilyn C. ; Brodersen, Craig ; Davis, Stephen D. ; Des Marais, David L. ; Donovan, Lisa A. ; Givnish, Thomas J. ; Hacke, Uwe G. ; Huxman, Travis ; Jansen, Steven ; et al ( , Plant, Cell & Environment)