Tsu-Wei Chen

Tsu-Wei Chen
Humboldt-Universität zu Berlin | HU Berlin · Albrecht Daniel Thaer-Institute of Agricultural and Horticultural Sciences

Professor

About

44
Publications
15,307
Reads
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509
Citations
Introduction
Tsu-Wei holds a professorship and DFG Emmy-Noether Program. He works on up-scaling the environmental effects on leaf photosynthesis to canopy level using functional-structural plant models and systems analyses. He is specialized in deciphering the triple feedbacks between environmental triggers, dynamic canopy architectures and physiological functions. He focusses on model-assisted high-throughput phenotyping and acclimation mechanisms optimizing canopy photosynthesis.
Additional affiliations
September 2020 - present
Humboldt-Universität zu Berlin
Position
  • Professor
September 2019 - August 2020
Leibniz Universität Hannover
Position
  • Group Leader
Description
  • Nachwuchsgruppe Lichtphysiologie
April 2017 - August 2019
Leibniz Universität Hannover
Position
  • Researcher
Education
October 2011 - October 2015
Leibniz Universität Hannover
Field of study
  • Gartenbauwissenschaft
October 2009 - September 2011
Leibniz Universität Hannover
Field of study
  • Horticultural Science
September 2002 - July 2007
National Taiwan University
Field of study
  • Horticultural Science; Life Science

Publications

Publications (44)
Article
Full-text available
Multi-genotype canopies are frequent in phenotyping experiments and raise increasing interest in agriculture. Radiation interception efficiency (RIE) and radiation use efficiency (RUE) have low heritabilities in such canopies. We propose a revised Monteith equation that identifies environmental and genetic components of RIE and RUE. An environmenta...
Article
Full-text available
Tsu-Wei Chen is a professor at Humboldt University in Berlin, Germany. He is also a grantee of Emmy Noether Programm of German Research Foundation (DFG). He earned his BSc. at National Taiwan University in Horticultural Science. He has worked on functional-structural plant models (FSPM) since 2009, beginning with his MSc. and PhD degrees from Leibn...
Article
Full-text available
Major global crops in high-yielding, temperate cropping regions are facing increasing threats from the impact of climate change, particularly from drought and heat at critical developmental timepoints during the crop lifecycle. Research to address this concern is frequently focused on attempts to identify exotic genetic diversity showing pronounced...
Article
Full-text available
The world cropping area for wheat exceeds that of any other crop, and high grain yields in intensive wheat cropping systems are essential for global food security. Breeding has raised yields dramatically in high-input production systems; however, selection under optimal growth conditions is widely believed to diminish the adaptive capacity of culti...
Article
Full-text available
Yield development of agricultural crops over time is not merely the result of genetic and agronomic factors, but also the outcome of a complex interaction between climatic and site‐specific soil conditions. However, the influence of past climatic changes on yield trends remains unclear, particularly under consideration of different soil conditions....
Article
Full-text available
One-dimensional light models using the Beer-Lambert equation (BL) with the light extinction coefficient k are simple and robust tools for estimating light interception of homogeneous canopies. Functional-structural plant models (FSPMs) are powerful to capture light-plant interactions in heterogeneous canopies, but they are also more complex due to...
Conference Paper
Full-text available
In the face of a changing climate, yield stability is becoming increasingly important for farmers and breeders. Long-term field experiments (LTEs) generate data sets that allow the quantification of stability for different agronomic treatments. However, there are no commonly accepted guidelines for assessing yield stability in LTEs. The large diver...
Article
Full-text available
In the face of a changing climate, yield stability is becoming increasingly important for farmers and breeders. Long-term field experiments (LTEs) generate data sets that allow the quantification of stability for different agronomic treatments. However, there are no commonly accepted guidelines for assessing yield stability in LTEs. The large diver...
Article
Full-text available
Cucumber (Cucumis sativus L.), an important vegetable crop, is sensitive to NaCl. Its salinity tolerance can be improved by grafting onto pumpkin rootstocks, which restricts the uptake of Na+, but not of Cl−. Although Na+ seems to be more toxic than Cl− in cucumber, tissue tolerance to Na+ and Cl− is still unclear. In this study, a mixed-salt exper...
Article
Acclimation of leaf traits to fluctuating environments is a key mechanism to maximize fitness. One of the most important strategies in acclimation to changing light is to maintain efficient utilization of nitrogen in the photosynthetic apparatus by continuous modifications of between-leaf distribution along the canopy depth and within-leaf partitio...
Article
Full-text available
Optimizing the interplay between sinks and sources is of crucial importance for breeding progress in winter wheat. However, the physiological limitations of yield from source (e.g. green canopy duration, GCD) and sink (e.g. grain number) are still unclear. Furthermore, there is little information on how the source traits have been modified during t...
Chapter
This book on the physiology of vegetable crops focuses on the activities and functions of vegetables, defined as herbaceous plants that are harvested for edible parts that can be consumed fresh or with little preparation. Physiology deals with the growth and development processes of these plants, and while this book is focused primarily on the orga...
Chapter
This book on the physiology of vegetable crops focuses on the activities and functions of vegetables, defined as herbaceous plants that are harvested for edible parts that can be consumed fresh or with little preparation. Physiology deals with the growth and development processes of these plants, and while this book is focused primarily on the orga...
Preprint
Full-text available
In the era of high-throughput visual plant phenotyping, it is crucial to design fully automated and flexible workflows able to derive quantitative traits from plant images. Over the last years, several software supports the extraction of architectural features of shoot systems. Yet currently no end-to-end systems are able to extract both 3D shoot t...
Article
Full-text available
Leaves adapted to diurnal light fluctuation (FL) tend to have reduced photosynthetic parameters in comparison with those grown under constant light but intercepting the same daily photon integral (DPI). This reduction may result from a non-linear relationship between photosynthetic protein synthesis rate (PPSR) and incident photosynthetically activ...
Article
Full-text available
Plants acclimatize their photosynthetic functions in leaves constantly to the fluctuating light, thereby optimizing the use of photosynthetic nitrogen (Nph) at the canopy level. To investigate the complex interplay between external signals during the acclimation processes, a mechanistic model based on the concept of protein turnover (synthesis and...
Article
Background and Aims Most crop species are glycophytes, and salinity stress is one of the most severe abiotic stresses reducing crop yields worldwide. Salinity affects plant architecture and physiological functions by different mechanisms, which vary largely between crop species and determine the susceptibility or tolerance of a crop species to sali...
Article
Gas exchange (GE) and chlorophyll fluorescence (CF) measurements are widely used to noninvasively study photosynthetic parameters, for example the rates of maximum Rubisco carboxylation (Vcmax), electron transport rate (J), daytime respiration (Rd) and mesophyll conductance (gm). Existing methods for fitting GE data (net assimilation rate−intercell...
Article
Full-text available
Water use efficiency (WUE) is considered as a determinant of yield under stress and a component of crop drought resistance. Stomatal behaviour regulates both transpiration rate and net assimilation and has been suggested to be crucial for improving crop WUE. In this work, a dynamic model was used to examine the impact of dynamic properties of stoma...
Article
Full-text available
Water use efficiency (WUE) is considered as a determinant of yield under stress and a component of crop drought resistance. Stomatal behavior regulates both transpiration rate and net assimilation and has been suggested to be crucial for improving crop WUE. In this work, a dynamic model was used to examine the impact of dynamic properties of stomat...
Conference Paper
Full-text available
A major issue of our today's research is to help meeting the challenges of future food security. One task is to assess and develop crop management strategies adapted to predicted future climatic conditions. Yet, both the variability of environmental conditions and the uncertainty of climate projections as well as the orchestra of multiple plant res...
Article
Full-text available
Plant performance is significantly influenced by prevailing light and temperature conditions during plant growth and development. For plants exposed to natural fluctuations in abiotic environmental conditions it is however laborious and cumbersome to experimentally assign any contribution of individual environmental factors to plant responses. This...
Thesis
Full-text available
Knowledge about the mechanisms of salt tolerance of crop species is necessary for designing new cultivars or strategies to improve crop performance under salinity, a widespread abiotic stress. Cucumber and tomato belong to the most important greenhouse vegetable crops and are often cultivated in regions exposed to salinity or in hydroponic systems,...
Article
Full-text available
Tomato (Solanum lycopersicum L.) is an important vegetable crop and often cultivated in regions exposed to salinity and high temperatures (HT) which change plant architecture, decrease canopy light interception and disturb physiological functions. However, the long-term effects of salinity and HT combination (S+HT) on plant growth are still unclear...
Article
Plant performance is significantly influenced by prevailing light and temperature conditions during plant growth and development. For plants exposed to natural fluctuations in abiotic environmental conditions it is however laborious and cumbersome to experimentally assign any contribution of individual environmental factors to plant responses. This...
Article
Tomato (Solanum lycopersicum L.) is an important vegetable crop and often cultivated in regions exposed to salinity and high temperatures (HT) which change plant architecture, decrease canopy light interception and disturb physiological functions. However, the long-term effects of salinity and HT combination (S+HT) on plant growth are still unclear...
Article
There are conflicting opinions on the relative importance of photosynthetic limitations under salinity. Quantitative limitation analysis of photosynthesis provides insight into the contributions of different photosynthetic limitations, but it has only been applied under saturating light conditions. Using experimental data and modeling approaches, w...
Article
Full-text available
There is increasing interest in evaluating the environmental effects on crop architectural traits and yield improvement. However, crop models describing the dynamic changes in canopy structure with environmental conditions and the complex interactions between canopy structure, light interception, and dry mass production are only gradually emerging....
Article
Background and Aims Maximizing photosynthesis at the canopy level is important for enhancing crop yield, and this requires insights into the limiting factors of photosynthesis. Using greenhouse cucumber (Cucumis sativus) as an example, this study provides a novel approach to quantify different components of photosynthetic limitations at the leaf le...
Conference Paper
Full-text available
The determination of maximum chlorophyll fluorescence yield (F' m) with the commonly used single rectangular flash (RF) approach potentially underestimates F' m and electron transport rate (J). A recent study suggests that the multi-phase flash (MPF) approach can provide more accurate estimations of F' m and J. This indicates that using the RF appr...
Article
There is increasing interest in evaluating the environmental effects on crop architectural traits and yield improvement. However, crop models describing the dynamic changes in canopy structure with environmental conditions and the complex interactions between canopy structure, light interception, and dry mass production are only gradually emerging....
Article
Full-text available
Plant physiologists are searching for the limitations of leaf and canopy photosynthesis in order to find a way to maximize the biomass production and resource use efficiency. Based on the Farquhar, von Caemmerer & Berry model of photosynthesis (FvCB model, Fahrquhar et al., 1980), Grassi and Magnani (2005) developed the quantitative limitation anal...
Conference Paper
Full-text available
We identified that in a two meter high greenhouse grown cucumber canopy, photosynthesis is mostly light-limited, and light interception and biochemical capacity are the major factors limiting photosynthesis. The diffusion pathways, stomatal and mesophyll conductance, are minor restrictions.
Conference Paper
Full-text available
Highlights: A dynamic cucumber FSPM, describing the effects of salinity on the plant morphology and the pattern of sodium accumulation in leaves, is parameterized and evaluated. This model is a first step in exploring mechanisms which improve plant tolerance and WUE at canopy level under salinity stress.
Article
Full-text available
Architectural models describe plant architecture in silico. They can be either static or dynamic and can represent the morphology of plants at various levels of detail - often resulting in a realistic visualization, which is per se of great power. However, one of the main scientific goals pursued with architectural modeling in applied plant science...
Article
Photosynthesis is limited by CO2 if chloroplastic CO2 concentration (Cc) is lower than the intersection point (Cctr) in the Farquhar-von Caemmerer-Berry (FvCB) model. This range is defined as light-saturated conditions. If Cc > Cctr, photosynthesis is limited mainly by light (non-light-saturated conditions). Therefore, the relationship between Cc a...

Questions

Questions (2)
Question
The next conference of functional-structural plant model (FSPM2020) will be held in Oct. 2020 in Hannover.
There is a whole session for root FSPM. It will be great to have you in the conference. As one of the organizer, I am interested in how many people from this project would like to come? Does anyone from this project would wish us to organize something special during the conference (e.g. satellite events, time for workshop, open discussion or software demonstration)?
Hope to see you all in Hannover (and your abstract within one month ^^)
Tsu-Wei

Projects

Projects (6)
Project
Sustainable, ressource-efficient and adaptable production of food. www.cubescircle.de
Project
A project to facilitate communications and networking between the young crop scientists (Nachwuchs AG) in agriculture / agronomy.
Project
The 9th International Conference on Functional-Structural Plant Models (FSPM2020), October 5-9, 2020, will be a online conference, including both synchronous (real-time) and asynchronous (on demand) parts. FSPM2020 aims to gather scientists working in the multi-disciplinary field of plant modelling and its applications. FSPM2020 will target methodological innovations for modelling of 3D-structures at various organization levels of plants, simulation of plant-microclimate interactions, and novel applications in functional-structural plant modelling, centered on questions in plant science, agriculture, horticulture, forestry and ecology.