Brazilian Journal of Botany

, Volume 41, Issue 1, pp 227–231 | Cite as

A possible role of leaf vascular network in heat dissipation in Vitis vinifera L.

  • Mario Pagano
  • Alberto Palliotti
  • Lorenzo Baldacci
  • Giorgio Carelli
  • Paolo Storchi
Short Communication


Recent studies showed how the density of leaf vascular system can be involved in the performance of physiological parameters. Major veins are commonly elevated in the lower epidermis of the leaf, and this anatomical feature could play a subsidiary role in increasing heat dispersion in the surrounding environment and may help dissipate excess light energy in the leaves. The aim of this study is to analyse the role of the leaf vein network in the heat dissipation process in Vitis vinifera (L.). Major leaf veins were insulated with liquid paraffin and analysed using thermal imaging. A significantly higher temperature was found on the leaf tissues with insulated veins compared to untreated leaves. Further studies are required to assess the real contribution of the leaf vascular network in thermal dissipation.


Drought stress Grapevine Heat Plants Thermal imaging Vein density 



Specific heat of air at constant pressure

dTLeaf dt−1

Rate of temperature changed


Transpiration rate


Stomatal conductance


Heat-transfer coefficient


Light-emitting diode


Evaporation of transpired moisture


Mass per unit of leaf


Net photosynthetic rate


Parts per million


Photosystem II


Photosynthetic active radiation


Density of air


Net radiant energy flux


Diffusion resistance


Relative humidity


Specific heat of leaf material


Leaf vein density


Vapour pressure deficit



The authors would like to thank Anna Vidus Rosin (Giakova srl, for the technical thermal device support as well as Maria Cristina Monteverdi, Fulvio Ducci and Maria Sole Vallecoccia for their valuable advice.

Authors’ contributions

MP prepared the plant material and the set-up. MP and LB performed the experimental protocol. MP performed the data analysis; AP, PS and GC supervised the work. All authors contributed to writing the article. All authors read and approved the manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


  1. Acosta-Motos JR, Ortuno MF, Bernal-Vicente A, Diaz-Vivancos P, Sanchez-Blanco MJ, Hernandez JA (2017) Plant responses to salt stress: adaptive mechanisms. (Preprints)
  2. Brodribb TJ, Field TS, Jordan GJ (2007) Leaf maximum photosynthetic rate and venation are linked by hydraulics. Plant Physiol 144:1890–1898CrossRefPubMedPubMedCentralGoogle Scholar
  3. Buckley TN, John GP, Scoffoni C, Sack L (2017) The sites of evaporation within leaves. Plant Physiol 173:1890–1898CrossRefGoogle Scholar
  4. Chaves MM, Costaa JM, Zarrouka O, Pinheiroa C, Lopesb CM, Pereira JS (2016) Controlling stomatal aperture in semi-arid regions—The dilemma of saving water or being cool? Plant Sci.
  5. Hager A (1980) The reversible, light-induced conversions of xanthophyll in the chloroplast. Berichte der Deutschen Botanischen Gesellschaft.
  6. Kaña R, Vass I (2008) Thermoimaging as tool for studying light-induced heating of leaves correlation of heat dissipation with the efficiency of photosystem II photochemistry and non-photochemical quenching. Environ Exp Bot 64:90–96CrossRefGoogle Scholar
  7. Leinonen I, Jones HG (2004) Combining thermal and visible imagery for estimating canopy temperature and identifying plant stress. J Exp Bot 55:1423–1431CrossRefPubMedGoogle Scholar
  8. Linacre ET (1964) Determinations of the heat transfer coefficient of a leaf. Plant Physiol 687–690Google Scholar
  9. Pagano M, Storchi P (2016) Leaf vein density and photosynthetic rate in Rosa: is there a correlation? Bol Soc Argent Bot 51:683–687Google Scholar
  10. Pagano M, Corona P, Storchi P (2016) Image analysis of the leaf vascular network: physiological considerations. Photosynthetica 54:567–571CrossRefGoogle Scholar
  11. Palliotti A, Silvestroni O, Petoumenou D (2010) Seasonal patterns of growth rate and morpho physiological features in green organs of Cabernet sauvignon grapevines. Am J Enol Viticult 61:74–82Google Scholar
  12. Palliotti A, Tombesi S, Frioni T, Silvestroni O, Lanari V, D’Onofrio C, Matarese F, Bellincontro A, Poni S (2015) Physiological parameters and protective energy dissipation mechanisms expressed in the leaves of two Vitis vinifera L. genotypes under multiple summer stresses. J Plant Physiol 185:84–92CrossRefPubMedGoogle Scholar
  13. Parsons-Wingerter P, Vickerman MB (2011) Informative mapping by VESGEN analysis of venation branching pattern in plant leaves such as Arabidopsis thaliana. Gravit Space Res.
  14. Roth-Nebelisck A, Uhl D, Mosbrugger V, Kerp H (2001) Evolution and function of leaf venation architecture: a review. Ann Bot 87:553–566CrossRefGoogle Scholar
  15. Sack L, Scoffoni C (2013) Leaf venation: structure, function, development, evolution, ecology and applications in the past, present and future. New Phytol 198:983–1000CrossRefPubMedGoogle Scholar
  16. Sack L, Scoffoni C, McKown AD, McKown AD, Frole K, Rawls M, Christopher H, Tran H, Tran T (2012) Developmentally based scaling of leaf venation architecture explains global ecological patterns. Nat Commun 837:1–10Google Scholar
  17. Schreiber U, Berry JA (1977) Heat-induced changes of chlorophyll fluorescence in intact leaves correlated with damage of the photosynthetic apparatus. Planta 136:233–238CrossRefPubMedGoogle Scholar
  18. Schymanski SJ, Or D, Zwieniecki M (2013) Stomatal control and leaf thermal and hydraulic capacitances under rapid environmental fluctuations. PLoS ONE 8:1–16CrossRefGoogle Scholar
  19. Taiz L, Zeiger E (2002) Plant physiology, 3rd edn. Sinaeur, Sunderland, pp 591–623Google Scholar
  20. Yamamoto HY (1979) Biochemistry of the violaxanthin cycle in higher plants. Pure Appl Chem 51:639–648CrossRefGoogle Scholar

Copyright information

© Botanical Society of Sao Paulo 2017

Authors and Affiliations

  1. 1.CREA – Research Centre for Viticulture and EnologyArezzoItaly
  2. 2.Dipartimento di scienze agrarie, alimentari ed ambientaliUniversità di PerugiaPerugiaItaly
  3. 3.NEST, CNR – Istituto Nanoscienze and Scuola Normale SuperiorePisaItaly
  4. 4.Dipartimento di FisicaUniversità di PisaPisaItaly

Personalised recommendations