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What makes leaves fall in autumn? A new process description for the timing of leaf senescence in temperate and boreal trees (LEAF-FALL). (LEAF-FALL) University of Antwerp

Matteo Campioli
Plant and Ecosystems (PLECO) - Ecology in a time of change
Leaf phenology is a key component in the functioning of temperate and boreal deciduous forests. The environmental cues for bud-burst in spring are well known, but little is known about the cues controlling the timing of leaf fall in autumn. Leaf fall is the last stage of leaf senescence, a process which allows trees to recover leaf nutrients. We urgently need to understand the controls timing leaf senescence to improve our projections of forest ...

Determination of the drivers of the onset of autumn leaf senescence in temperate deciduous forests: the relationship between leaf dynamics, tree growth and photoperiod. University of Antwerp

Matteo Campioli
Plant and Ecosystems (PLECO) - Ecology in a time of change
Leaf phenology is a key component in the functioning of temperate deciduous forests. The environmental cues for bud-burst in spring are well known, but little is known about the cues controlling the timing of leaf fall in autumn. Leaf fall is the last stage of leaf senescence, a process which allows trees to recover leaf nutrients. We urgently need to understand the controls timing leaf senescence to improve our projections of forest growth and ...

The role of sugar sensing and sugar metabolism during developmental and induced leaf senescence. KU Leuven

Wim Van den Ende
Molecular Biotechnology of Plants and Micro-organisms
Controlling leaf senescense is a hot research area in modern plant physiology research, in order to be able to extend the period of active photosynthesis and overall biomass production. Sugars play an important role during natural and induced senescence. However, the exact roles of the sugar signalling processes involved in plant senescence remain unclear. This project focuses on sugars and sugar metabolizing enzymes in Arabidopsis leaves. More ...

A game-changing perspective on intra-seasonal wood formation dynamics using high-resolution X-ray Computed Tomography to elucidate leaf senescence and autumn dynamics of temperate deciduous trees in Europe. University of Antwerp

Matteo Campioli
Ghent University, Plant and Ecosystems (PLECO) - Ecology in a time of change
Intra-seasonal wood formation is still understudied because the measuring method (analysis of cellular anatomical traits) is labour-intensive and requires important manual skills. The last phase of wood formation (lignification) has been particularly neglected, resulting in a lack of understanding of tree autumn dynamics. UAntwe -PLECO and UGent-Woodlab will join forces (in collaboration with dr. Fonti, WSL, as key advisor) to address two ...

Identifying and characterizing the ubiquitinylation substrates of the central leaf growth and senescence regulator, BIG BROTHER Ghent University

Dirk Inzé
Department of Plant Biotechnology and Bioinformatics

How plants grow from a small seed to their final stature appeals to the imagination of many

people. Plants are indispensable for our daily needs, therefore, it is crucial to understand the

mechanisms that drive plant growth and identify molecular links between genes that enhance final

leaf size and longevity. In this project, we will study the central growth regulator BIG BROTHER

(BB). BB limits ...

A game-changing perspective on intra-seasonal wood formation dynamics using high-resolution X-ray Computed Tomography to elucidate leaf senescence and autumn dynamics of temperate deciduous trees in Europe Ghent University

Jan Van den Bulcke
Department of Environment

Intra-seasonal wood formation is still understudied because the measuring method (analysis of cellular anatomical traits) is labour-intensive and requires important manual skills The last phase of wood formation (lignification) has been particularly neglected, resulting in a lack of understanding of tree autumn dynamics UAntwerp-PLECO and UGent-Woodlab will join forces (in collaboration with dr Fonti, WSL, as key advisor) to address two ...

Cadmium-induced autophagy in Arabidopsis thaliana plants: Its involvement in accelerated senescence in mature leaves and acclimation in young ones (R-10920) Hasselt University

Ann CUYPERS
Environmental Biology
Cadmium (Cd) pollution affects many regions worldwide and reduces plant growth and accelerates leaf senescence. Autophagy, which causes cellular material degradation, contributes to nutrient remobilization from old to young organs during senescence. Moreover, it has an antioxidant function and enhances stress acclimation. While it is induced by Cd, its role and regulation require further investigation. The hypothesis of this project is that ...

Drought effects on autumn senescence depend on tree species and stand species richness. University of Antwerp

Matteo Campioli
Plant and Ecosystems (PLECO) - Ecology in a time of change
With climate change, temperate forests will face more droughts, threathening their important functions in the earth system. To predict future health and productivity of temperate forests, it is crucial to understand how droughts affect senescence timing, as this determines the growing season length and affects annual carbon (C) uptake of deciduous trees. However, there is no consensus, with studies variously reporting delayed, advanced or ...

The role of sugar supply and signalling in the regulation of maize leaf growth. University of Antwerp

Gerrit Beemster
Integrated Molecular Plant Physiology Research (IMPRES)
Plants need light to grow and how plants regulate growth in response to light is the central theme in this project. Light drives the generation of sugars by photosynthesis and sugars act as signalling molecules that regulate developmental processes including cell division and expansion. Studies on growth regulation by sugars have been done largely in Arabidopsis, but we use the maize leaf due it its larger size that allows to performe analyses ...

Towards a better model representation of vegetation autumn phenology of temperate -zone deciduous trees. University of Antwerp

Ivan Janssens
Plant and Ecosystems (PLECO) - Ecology in a time of change
Autumn phenological events (e.g. leaf senescence) signal the end of vegetation activity in deciduous trees and alter their albedo, thereby exerting a strong control on various ecological processes and climate feedbacks. Predicting their timing with high accuracy is a prerequisite for better understanding the climate-ecosystem interactions. Modeling autumn phenology at larger spatial and temporal scales remains challenging, because the processes ...