Leaf anatomical characteristics associated with shoot hydraulic conductance, stomatal conductance and stomatal sensitivity to changes of leaf water status in temperate deciduous trees

By K. Aasamaa, A. Sõber, M. Rahi. 2001

268 citations recorded by the source corpus.

Some anatomical characteristics in leaves relating to hydraulic conductance and stomatal conductance were examined in six temperate deciduous tree species. The fourth power of the radius of the conducting elements in xylem (r4) and the area of mesophyll and epidermal cells per unit length of leaf cross-section (u) were high in leaves with high hydraulic conductance (L). Stomatal conductance (gs) and stomatal sensitivity to an increase in leaf water potential (si) correlated positively with the length of stomatal pore (l), but negatively with the guard cell width (z) and the length of the dorsal side of the guard cells (ld). Stomatal sensitivity to a decrease in leaf water potential (sd) correlated negatively with l and positively with z and ld. The anatomical characteristics associated with hydraulic conductance (r4 and u) and those associated with stomatal conductance and sensitivity to changes of leaf water potential (l, z and ld) were correlated. We conclude that hydraulic conductance may depend on anatomical characteristics of xylem, mesophyll and epidermis, and stomatal conductance and its sensitivity to changing water potential may depend on anatomical characteristics of stomata. The correlation of shoot hydraulic conductance with stomatal conductance and its sensitivity may be based largely on the correlation between the anatomical characteristics of the water conducting system and stomata in these trees.

Subfields: Global and Planetary Change, Plant Science, Soil Science

View Paper: https://www.semanticscholar.org/paper/4c7aab54f542a7ab318bdb397606152f4ab5eb8e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Global and Planetary Change

1. Tim J. Brodribb
2. M. M. Chaves
3. T. Feild
4. P. Grubb
5. J. M. Costa
6. J. Pereira
7. Peter Franks
8. João Maroco

In Plant Science

1. M. M. Chaves
2. J. M. Costa
3. Tim J. Brodribb
4. T. Feild
5. João Maroco
6. P. Grubb
7. J. Pereira
8. Peter Franks

In Soil Science

1. P. Grubb
2. J. Pereira
3. João Maroco
4. M. M. Chaves
5. Tim J. Brodribb

Citations in the corpus

• Smaller, faster stomata: scaling of stomatal size, rate of response, and stomatal conductance (2013, background): “, 2009), and also across a group of six tree species of different genera (Aasama et al., 2001).”
• The ecological significance of long-distance water transport: short-term regulation, long-term acclimation and the hydraulic costs of stature across plant life forms (2003, unknown): “In the shoot, both stems and leaves showed variable conductance, a finding reported also by Aasamaa et al. (2001) in six deciduous tree species.”
• Grapevine under deficit irrigation: hints from physiological and molecular data. (2010, background): “It is also known that hydraulic conductance of roots and shoots influences stomatal regulation and plant transpiration (Lovisolo and Schubert, 1998; Aasamaa et al., 2001; Rogiers et al., 2009).”
• Understanding plant responses to drought - from genes to the whole plant. (2003, background): “Species differences in maximum stomatal conductance may rely not only on the size and frequency of stomata, but also in the maximum xylem conductance, as derived from xylem anatomy (Aasamaa et al. 2001, 2002).”
• Leaf Maximum Photosynthetic Rate and Venation Are Linked by Hydraulics1[W][OA] (2007, background): “The potential role of leaf characters such as vein density (Sack and Frole, 2006) and mesophyll thickness (Aasamaa et al., 2001) as determinants of the hydraulic efficiency of the leaf have been recently recognized.”
• Trade-offs in interspecific comparisons in plant ecology and how plants overcome proposed constraints (2016, background): “The conductance is determined partly by the radius of the largest conducting elements in the xylem of the veins (Aasamaa et al. 2001), partly on the vein length per unit area (VLA; Sack et al. 2013) and partly by the length of the path between the end of a vein and the point where water evaporates…”