Simulating transpiration and leaf water relations in response to heterogeneous soil moisture and different stomatal control mechanisms
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| Title: | Main Title: Simulating transpiration and leaf water relations in response to heterogeneous soil moisture and different stomatal control mechanisms |
| Description: | Abstract: Aims Stomata can close to avoid cavitation under decreased soil water availability. This closure can be triggered by hydraulic (‘H’) and/or chemical signals (‘C’, ‘H + C’). By combining plant hydraulic relations with a model for stomatal conductance, including chemical signalling, our aim was to derive direct relations that link soil water availability, expressed as fraction of roots in dry soil (fdry), to transpiration reduction. Methods We used the mechanistic soil-root water flow model R-SWMS to verify this relation. Virtual split root experiments were simulated, comparing horizontal and vertical splits with varying fdry and different strengths of stomatal regulation by chemical and hydraulic signals. Results Transpiration reduction predicted by the direct relations was in good agreement with numerical simulations. For small enough potential transpiration and large enough root hydraulic conductivity and stomatal sensitivity to chemical signalling isohydric plant behaviour originates from H + C control whereas anisohydric |
| Citation Advice: | K. Huber, J. Vanderborght, M. Javaux and H. Vereecken. Simulating transpiration and leaf water relations in response to heterogeneous soil moisture and different stomatal control mechanisms. Plant and Soil, 394,(1-2), 109-126, (2015). |
Responsible Party
| Creators: | Katrin Huber (Author), Jan Vanderborght (Author), Mathieu Javaux (Author), Harry Vereecken (Author) |
| Publisher: | Springer International Publishing Switzerland |
| Publication Year: | 2018 |
Topic
| TR32 Topic: | Soil |
| Related Subproject: | B4 |
| Subjects: | Keywords: Root, Soil Moisture, Numerical Simulation |
| Geogr. Information Topic: | Environment |
File Details
| Filename: | Huber2015.pdf |
| Data Type: | Text - Article |
| File Size: | 753 KB |
| Date: | Available: 18.06.2018 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | According to the TR32DB data policy agreement. |
| Access Limitations: | According to the TR32DB data policy agreement. |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Publication
| Publication Status: | Accepted |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Source: | Plant and Soil |
| Number of Pages: | 18 (109 - 126) |
Metadata Details
| Metadata Creator: | Mirjam Zörner |
| Metadata Created: | 19.06.2018 |
| Metadata Last Updated: | 19.06.2018 |
| Subproject: | B4 |
| Funding Phase: | 3 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 623 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 1 |
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