ADVANCED INTERACTION SEARCH

VitiSynth Full Entry

Reference: An increase in xylem embolism resistance of grapevine leaves during the growing season is coordinated with stomatal regulation, turgor loss point, and intervessel pit membranes
Key Statements

Abstract-

Although xylem embolism resistance is traditionally considered as static, we hypothesized that in grapevine (Vitis vinifera) leaf xylem becomes more embolism resistant along the growing season.
We evaluated xylem architecture, turgor loss point (ΨTLP), and water potentials leading to 25% of maximal stomatal conductance (gs25) or 50% embolism in the leaf xylem (P50) in three irrigation treatments and at three time points during the growing season, while separating the effects of leaf age and time of season.
Hydraulic traits acclimated over the growing season in a coordinated manner. Without irrigation, ΨTLP, gs25, and P50 decreased between late May and late August by 0.95, 0.77, and 0.71 MPa, respectively. A seasonal shift in P50 occurred even in mature leaves, while irrigation had only a mild effect (<0.2 MPa) on P50. Vessel size and pit membrane thickness were also seasonally dynamic, providing a plausible explanation for the shift in P50.
Our findings provide clear evidence that grapevines can modify their hydraulic traits along a growing season to allow lower xylem water potential, without compromising gas exchange, leaf turgor, or xylem integrity. Seasonal changes should be considered when modeling ecosystem vulnerability to drought or comparing data sets acquired at different phenological stages.

(highlighting by VitiSynth)

Link to paper-

https://nph.onlinelibrary.wiley.com/doi/abs/10.1111/nph.17025

https://doi.org/10.1111/nph.17025


Partially indexed reference.

View Interactions

VitiSynth Review
Go Back

Vitisynth

Publication Details

Published: 2020
Publication: New Phytologist
Issue: 2020 Online October 2020
Author: Sorek Y 2020
Recommendation:

Brain food

Related Video

None for this Entry

Related Audio

None for this Entry

Discuss this Entry

No related discussions available.

Join Discussion

Latest Discussions
Special Report

Date: 19th April 2020
Vine Synth:Growth stage:VS 4 Flowering:VS 4c Bud development:VS 4c.2 Differentiation of main axis of anlage into inflorescence rachis primordium or tendril primordium

The development of inflorescence primordia (IP) is clearly described i...Read more

Date: 16th February 2020
Admin Synth:Guides:Data standards:Colour codes

I think it would be very useful if we have standard colour codes for e...Read more

Date: 29th October 2015
Reference:Journal:Weed Technology:2015:Online October 2015:Devkota P 2015:Influence of Spray Solution Temperature and Holding Duration on Weed Control with Premixed Glyphosate and Dicamba Formulation

Pesticides in general are chemical products, therefore the quality of ...Read more

List of sponsors.. Read more

test