A5066764168- Light effects on plants
- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Tree Root and Stability Studies
- Atmospheric Ozone and Climate
- Frailty in Older Adults
- Photosynthetic Processes and Mechanisms
- Intensive Care Unit Cognitive Disorders
- Geriatric Care and Nursing Homes
- Forest ecology and management
- Spectroscopy and Quantum Chemical Studies
- Plant and animal studies
- Cultural Heritage Materials Analysis
- Hydrology and Sediment Transport Processes
- Greenhouse Technology and Climate Control
- Atmospheric chemistry and aerosols
- Plant responses to elevated CO2
Wageningen University & Research
2020-2024
Institute of Crop Science
2023
University of Padua
2019-2021
Swiss Federal Institute for Forest, Snow and Landscape Research
2020
Summary Tree responses to altered water availability range from immediate (e.g. stomatal regulation) delayed crown size adjustment). The interplay of the different response times and processes, their effects on long‐term whole‐tree performance, however, is hardly understood. Here we investigated legacy structures functions mature Scots pine in a dry inner‐Alpine Swiss valley after stopping an 11‐yr lasting irrigation treatment. Measured ecophysiological time series were analysed interpreted...
Across land plants there is a general pattern of xylem conduit diameters widening towards the stem base thus reducing accumulation hydraulic resistance as grow taller. In conifers, conduits consist cells with closed end-walls and water must flow through bordered pits imbedded in side walls. As consequence both cell size, which determines numbers walls that conductive stream cross, well characteristics themselves, crucially affect total resistance. Because size pit features influence tandem,...
Abstract Background and Aims Long-term exposure over several days to far-red light (FR) increases leaf expansion, whereas short-term (minutes) might enhance the photosystem II operating efficiency (ϕPSII). The interaction between these responses at different time scales their impact on photosynthesis whole-plant level are not well understood. We aimed assess effects of FR in an irradiance mimicking spectrum sunlight (referred as artificial solar irradiance), both long short term, CO2...
Abstract Maximal sunlight intensity varies diurnally due to the earth's rotation. Whether this slow diurnal pattern influences photoprotective capacity of plants throughout day is unknown. We investigated variation in NPQ, along with NPQ capacity, induction, and relaxation kinetics after transitions high light, tomato grown under parabolic (DP) or constant (DC) light regimes. DP peaked at midday (470 μmol m ‐2 s ‐1) while DC stayed 300 ‐1 a similar 12‐hour photoperiod daily integral. NPQs...
Diel stem diameter changes measured at the base of temperate tree species can be mostly explained by a hydraulic system flow and storage compartments passively driven transpiration. Active, osmotic processes are considered to play minor role only. Here we explore whether such have stronger impact on diel in twig than because twigs closer leaves, main source newly acquired carbon. We investigated wood bark pine trees parallel fluctuations osmolality needles base. found consistent size...
Maximal sunlight slowly varies over a day due to earth’s rotation. However, it is unknown whether this predictable daily light pattern influences the short-term regulation of non-photochemical quenching (NPQ) responses across day. Diurnal variation in NPQ at growth intensity, capacity and kinetics during after 30-minute high period, were measured tomato plants grown diurnal constant (DC) or parabolic (DP) intensity. We also leaf gas exchange violaxanthin de-epoxidation state (DES) period...