ArticleAnnals of botany2012
Co-ordinated development of the leaf midrib xylem with the lamina in Nicotiana tabacum.
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Habitat and Canopy Position Influence Leaf Traits and Trait-Associations of a Large-Sized Leguminous Herb (Plants (Basel, Switzerland) · 2026Article
- Chromatic covalent organic frameworks enabling in-vivo chemical tomography.Nature communications · 2024Article
- Potential involvement of root auxins in drought tolerance by modulating nocturnal and daytime water use in wheat.Annals of botany · 2019Article
- Leaf structural and hydraulic adjustment with respect to air humidity and canopy position in silver birch (Betula pendula).Journal of plant research · 2019Article
- Abscisic Acid Down-Regulates Hydraulic Conductance of Grapevine Leaves in Isohydric Genotypes Only.Plant physiology · 2017Article
- Outside-Xylem Vulnerability, Not Xylem Embolism, Controls Leaf Hydraulic Decline during Dehydration.Plant physiology · 2017Article
- Response of Organ Structure and Physiology to Autotetraploidization in Early Development of Energy Willow Salix viminalis.Plant physiology · 2016Article
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Authors and funding
2 authors.
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No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsThe water-transport capacity of leaf venation is positively related to the leaf-lamina area, because the number and diameter of vein-xylem conduits are controlled to match the lamina area. This study aimed to investigate how this co-ordinated relationship between the leaf-lamina area and vein-xylem characteristics is achieved by examining the midrib xylem of tobacco leaves.
methodsThe changes in the midrib-xylem characteristics over time were quantified using leaves with four different final lamina areas. The measured data were fitted to sigmoidal functions. From the constants of the fitted curves, the final values in mature leaves, maximal developmental rates (V(Dev)) and developmental duration (T(Dev)) were estimated for each of the xylem characteristics. Whether it is the lamina or the midrib xylem that drives the co-ordinated development was examined by lamina removal from unfolding leaves. The effects of the application of 0·1 % IAA (indole-3-acetic acid) to leaves with the laminas removed were also analysed. KEY
resultsFor both the leaf lamina and the midrib-xylem characteristics, the differences in final values among leaves with different lamina areas were more strongly associated with those in V(Dev). Notably, the V(Dev) values of the midrib-xylem characteristics were related to those of the leaf-lamina area. By lamina removal, the conduit diameter was reduced but the number of conduits did not significantly change. By IAA application, the decrease in the conduit diameter was halted, and the number of conduits in the midrib xylem increased.
conclusionsAccording to the results, the V(Dev) values of the lamina area and the midrib-xylem characteristics changed in a co-ordinated manner, so that the water-transport capacity of the midrib xylem was positively related to the leaf-lamina area. The results also suggest that IAA derived from the leaf lamina plays a crucial role in the development of the leaf venation.
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