Gas Exchange, Stem Water Potential and Xylem Flux on Some Grapevine Cultivars Affected by Esca Disease

  • L. Andreini Scuola Superiore Sant’Anna di Studi Universitari e di Perfezionamento, Via S. Cecilia, 3 – 56127 Pisa
  • G. Caruso Dipartimento di Coltivazione e Difesa delle Specie Legnose “G. Scaramuzzi”, Università di Pisa, Via del Borghetto, 80 – 56126 Pisa
  • C. Bertolla Dipartimento di Coltivazione e Difesa delle Specie Legnose “G. Scaramuzzi”, Università di Pisa, Via del Borghetto, 80 – 56126 Pisa
  • G. Scalabrelli Dipartimento di Coltivazione e Difesa delle Specie Legnose “G. Scaramuzzi”, Università di Pisa, Via del Borghetto, 80 – 56126 Pisa
  • R. Viti Dipartimento di Coltivazione e Difesa delle Specie Legnose “G. Scaramuzzi”, Università di Pisa, Via del Borghetto, 80 – 56126 Pisa
  • R. Gucci Dipartimento di Coltivazione e Difesa delle Specie Legnose “G. Scaramuzzi”, Università di Pisa, Via del Borghetto, 80 – 56126 Pisa
DOI: https://doi.org/10.21548/30-2-1434

Abstract

The effect of esca disease on gas exchange, stem water potential and xylem flux of adult grapevines of Cabernet
Sauvignon, Sangiovese and Trebbiano cultivars was studied over three growing seasons. Water relations were
measured at véraison and cluster ripening on three types of vines: i) healthy (control); ii) symptomatic and iii)
apparently healthy in the year of measurements but that had showed esca symptoms in the previous season. Xylem
flux was determined on cane segments by perfusion using a tracing dye before and after the appearance of esca
symptoms. Esca induced a marked reduction (about 70%) in carbon assimilation and stomatal conductance,
especially in Cabernet Sauvignon and Sangiovese. Esca did not affect the stem water potential. Gas exchange
parameters measured before the symptoms appeared in plants affected by esca were similar to those of healthy
plants. Measurements made one month before the appearance of the symptoms cannot be used as screening method
to determine whether the vine will show esca. No differences in dye translocation were found before the symptoms’
appearance. However, a decrease in xylem flux was measured in symptomatic vines of Cabernet Sauvignon. After
the appearance of esca symptoms, only the Trebbiano had a lower xylem flux than the healthy vines.

Downloads

Download data is not yet available.
Published
2016-12-12
Issue
Vol. 30 No. 2 (2009)
Section
Articles

A copyright form will be e-mailed to the corresponding author when the manuscript has been accepted for publication.

 

In principle, the Author agrees to the following when he/she signes the copyright agreement:

I hereby assign to the SOUTH AFRICAN SOCIETY FOR ENOLOGY AND VITICULTURE (SASEV) the copyright of the text, tables, figures, supplementary material, illustrations and other information (the Material) submitted with the manuscript to be published in SOUTH AFRICAN JOURNAL OF ENOLOGY AND VITICULTURE (SAJEV) (the "Article"). The copyright becomes effective from the date the Article has been accepted for publication in SAJEV.

 

This is an open access journal, and the authors and journal should be properly acknowledged, when works are cited.

Author's may use the publishers version for teaching purposes, in books, theses, dissertations, conferences and conference papers.

A copy of the authors' publishers version may also be hosted on the following websites:

  • Non-commercial personal webpage or blog.
  • Institutional webpage.
  • Authors Institutional Repository.

The following notice should accompany such a posting on the website: This is an electronic version of an article published in SAJEV, Volume XXX, number XXX, pages XXX - XXX, DOI.   Authors should also supply a hyperlink to the original paper or indicate where the original paper (www.journals.ac.za/index.php/sajev/) may be found.

Authors publishers version, affiliated with the Stellenbosch University will be automatically deposited in the University's Institutional Repository SUNScholar.

Articles as a whole, may not be re-published with another journal.

The following license applies:

Attribution CC BY-NC-ND 4.0