Workshop announcement: "Development and ageing in forest trees"

Federico Magnani federico at
Wed Mar 15 06:56:31 EST 2000

Please find enclosed the first call for a EUROSILVA Workshop on
"Development and ageing in forest trees". Contributions from interested
scientists are welcome!
Best regards
Federico Magnani

Federico Magnani, PhD
via A. Vannucci 13
I-50134 Firenze, Italy
tel (0039) 055 461453
fax (0039) 055 486604

            EUROSILVA - Forest Tree Physiology Research

                        Workshop on

                      Florence, Italy
                  20-24 September, 2000

          First Announcement and Call for Papers

What controls tree development and ageing? what is the relative role of
internal and external factors? At the tissue level, recent advances have
demonstrated in detail that development and senescence both result from
the interaction of genetic and environmental controls, involving
differential gene expression and activation. 
At the tree level, a shift in hormonal patterns, possibly of endogenous
genetic origin, has been found to trigger the process of maturation,
which strongly affects the structure, function and growth of the plant
and initiates the diversion of resources from vegetative to reproductive
Also at the tree and population level, exogenous factors have been
proposed to control the developmental pattern of rise and decline of
primary productivity with age. A lively discussion has been going on for
several years on what could be the ecological determinants of the
age-related decline in forest productivity. Several theories have been
proposed to explain this phenomenon, variously suggesting nutrient or
hydraulic limitations, increased respiration and shifts in biomass
allocation as possible mechanisms, but to date there is no definitive
evidence to support any of them as a universal mechanism. Ageing and
maturation are generally thought to be intimately interwined albeith
distinct processes.
Eventually, what are the implications of development and ageing for the
response of tissues and plants to their biotic and abiotic environment?

Because of the variety of processes involved in tree development and
maturation, definite answers often result elusive, requiring a
comprehensive and holistic approach that takes both endogenous and
external factors into account. The aim of the workshop is therefore to
bring together experts of different background and expertise to discuss
these processes of central relevance both to plant biology and to forest
ecology moving from different perspectives. An interdisciplinary
workshop on this issue that brings together foresters, ecologists and
biologists seems most appropriate and relevant to the aims of the


Jaakko Kangasjärvi, University of Helsinki, Finland:   Gene expression
during leaf development and senescence in birch (Betula pendula).

Thomas Moritz, Swedish University of Agricultural Sciences, Sweden:
Studies of photoperiodic induction of shoot growth cessation in trees: a
transgenic approach.

Antje Rohde, University of Gent, Belgium:   Molecular components of
terminal bud formation in poplar.

Alain Drouet, University of Orléans, France:  Ageing control on
flavonoid biosynthesis in walnut.

Carmen Diaz-Sala, University of Alcalá, Spain:   Maturation and
reinvigoration in trees: physiological, molecular and cellular

Stith T. Gower, University of Wisconsin, USA:   Towards a better
understanding of age-related forest NPP decline.

Michael G. Ryan, USDA/FS Rocky Mountain Research Station, USA:
Experimental evidence for hydraulic constraints on stomatal function,
and implications for age-related decline in forest growth.

Maurizio Mencuccini, University of Edinburgh, UK:   Functional
interpretation of allometric analyses in forest trees. The role of
hydraulic constraints.

Reinhart Ceulemans, University of Antwerpen, Belgium:   Developmental
processes in trees: effects of abiotic factors, competition and

Thomas E. Kolb, Northern Arizona University, USA:   Ageing as an
influence on tree response to ozone: theory and observations.

Manfred Kuppers, University of Hohenheim, Germany:   Ecophysiology of
forest succession: from leaf to plant in a competitive environment.

Henrik Saxe, Royal Veterinary and Agricultural University, Denmark:
Growth and physiological responses of tree seedlings to changed
temperature and CO2

We invite submission of abstracts for papers and posters for the
EUROSILVA Workshop "Development and ageing in forest trees". Abstracts
must be received no later than 30 April, 2000. Abstracts for contributed
posters and paper sessions should be sent electronically using the
on-line application form at:

All practical information regarding the Workshop and the registration
form in pdf format can be found on the web page:

For additional information and problems please contact:
Dr. Federico Magnani
Local Scientific Organizer
Via A. Vannucci, 13 – 50134 Florence (Italy)
Phone ++39 055 461453 – Fax ++39 055 486604
E mail: federico at

Organizing Secretariat
Enic Viale Amendola 
20 – 50121 Florence (Italy)
Phone ++39 055 240275 – Fax ++39 055 2345078
E mail: chiara at

Prof. Satu Huttunen, Finland
Dr. Jurg Bucher, Switzerland
Prof. Björn Sundberg, Sweden
Prof. Paul G. Jarvis, United Kingdom
Prof. Rainer Matyssek, Germany

Prof. Giuseppe Scarascia-Mugnozza , Italy
Prof. Marco Borghetti , Italy
Dr. Federico Magnani, Italy

Italian Academy of Forest Science
SISEF - Italian Society of Silviculture and Forest Ecology
CNR - National Research Council, Italy

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