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J. Kromdijk
University of Illinois at Urbana–Champaign
37Publications
12H-index
688Citations
Publications 37
Newest
#1J. Kromdijk (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
#2Katarzyna Głowacka (PAN: Polish Academy of Sciences)H-Index: 14
Last.Stephen P. Long (UIUC: University of Illinois at Urbana–Champaign)H-Index: 92
view all 3 authors...
Prediction of stomatal conductance is a key element to relate and scale up leaf-level gas exchange processes to canopy, ecosystem and land surface models. The empirical models that are typically employed for this purpose are simple and elegant formulations which relate stomatal conductance on a leaf area basis to the net rate of CO2 assimilation, humidity and CO2 concentration. Although light intensity is not directly modelled as a stomatal opening cue, it is well-known that stomata respond stro...
3 CitationsSource
#1Katarzyna Głowacka (PAN: Polish Academy of Sciences)H-Index: 14
#2J. Kromdijk (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
Last.Stephen P. Long (Lancaster University)H-Index: 92
view all 10 authors...
Insufficient water availability for crop production is a mounting barrier to achieving the 70% increase in food production that will be needed by 2050. One solution is to develop crops that require less water per unit mass of production. Water vapor transpires from leaves through stomata, which also facilitate the influx of CO2 during photosynthetic assimilation. Here, we hypothesize that Photosystem II Subunit S (PsbS) expression affects a chloroplast-derived signal for stomatal opening in resp...
35 CitationsSource
#1Coralie E. Salesse-Smith (Boyce Thompson Institute for Plant Research)H-Index: 1
#2Robert E. Sharwood (ANU: Australian National University)H-Index: 19
Last.David B. Stern (Boyce Thompson Institute for Plant Research)H-Index: 57
view all 6 authors...
Rubisco catalyses a rate-limiting step in photosynthesis and has long been a target for improvement due to its slow turnover rate. An alternative to modifying catalytic properties of Rubisco is to increase its abundance within C4 plant chloroplasts, which might increase activity and confer a higher carbon assimilation rate. Here, we overexpress the Rubisco large (LS) and small (SS) subunits with the Rubisco assembly chaperone RUBISCO ASSEMBLY FACTOR 1 (RAF1). While overexpression of LS and/or SS...
11 CitationsSource
#2Dušan LazárH-Index: 24
Last.Govindjee (UIUC: University of Illinois at Urbana–Champaign)H-Index: 67
view all 4 authors...
Chlorophyll (Chl) a fluorescence induction (transient), measured by exposing dark-adapted samples to high light, shows a polyphasic rise, which has been the subject of extensive research over several decades. Several Chl fluorescence parameters based on this transient have been defined, the most widely used being the FV [= (FM–F0)]/FM ratio as a proxy for the maximum quantum yield of PSII photochemistry. However, considerable additional information may be derived from analysis of the shape of th...
41 CitationsSource
#1Berkley J. Walker (HHU: University of Düsseldorf)H-Index: 13
#2Florian A. Busch (ANU: Australian National University)H-Index: 16
Last.Tracy Lawson (University of Essex)H-Index: 38
view all 5 authors...
Measurements of in vivo photosynthesis are powerful tools that probe the largest fluxes of carbon and energy in an illuminated leaf, but often the specific techniques used are so varied and specialized that it is difficult for researchers outside the field to select and perform the most useful assays for their research questions. The goal of this chapter is to provide a broad overview of the current tools available for the study of in vivo photosynthesis so as to provide a foundation for selecti...
1 CitationsSource
#1Elias Kaiser (WUR: Wageningen University and Research Centre)H-Index: 6
#2J. Kromdijk (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
Last.Leo F. M. Marcelis (WUR: Wageningen University and Research Centre)H-Index: 35
view all 5 authors...
Background and Aims Plants depend on photosynthesis for growth. In nature, factors such as temperature, humidity, CO2 partial pressure, and spectrum and intensity of irradiance often fluctuate. Whereas irradiance intensity is most influential and has been studied in detail, understanding of interactions with other factors is lacking. Methods We tested how photosynthetic induction after dark–light transitions was affected by CO2 partial pressure (20, 40, 80 Pa), leaf temperatures (15·5, 22·8, 30·...
14 CitationsSource
#1J. Kromdijk (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
#2Katarzyna Głowacka (PAN: Polish Academy of Sciences)H-Index: 14
Last.Stephen P. Long (Lancaster University)H-Index: 92
view all 7 authors...
Crop leaves in full sunlight dissipate damaging excess absorbed light energy as heat. When sunlit leaves are shaded by clouds or other leaves, this protective dissipation continues for many minutes and reduces photosynthesis. Calculations have shown that this could cost field crops up to 20% of their potential yield. Here, we describe the bioengineering of an accelerated response to natural shading events in Nicotiana (tobacco), resulting in increased leaf carbon dioxide uptake and plant dry mat...
270 CitationsSource
#1Richard Webster (Aberystwyth University)H-Index: 7
#2Steven M. Driever (WUR: Wageningen University and Research Centre)H-Index: 11
Last.Stephen P. LongH-Index: 92
view all 11 authors...
Arundo donax has attracted interest as a potential bioenergy crop due to a high apparent productivity. It uses C3 photosynthesis yet appears competitive with C4 grass biomass feedstock’s and grows in warm conditions where C4 species might be expected to be that productive. Despite this there has been no systematic study of leaf photosynthetic properties. This study determines photosynthetic and photorespiratory parameters for leaves in a natural stand of A. donax growing in southern Portugal. We...
21 CitationsSource
#1Katarzyna Głowacka (PAN: Polish Academy of Sciences)H-Index: 14
#2J. Kromdijk (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
Last.Stephen P. Long (UIUC: University of Illinois at Urbana–Champaign)H-Index: 92
view all 6 authors...
Stable transformation of plants is a powerful tool for hypothesis testing. A rapid and reliable evaluation method of the transgenic allele for copy number and homozygosity is vital in analysing these transformations. Here the suitability of Southern blot analysis, thermal asymmetric interlaced (TAIL-)PCR, quantitative (q)PCR and digital droplet (dd)PCR to estimate T-DNA copy number, locus complexity and homozygosity were compared in transgenic tobacco. Southern blot analysis and ddPCR on three g...
29 CitationsSource
#1J. Kromdijk (UIUC: University of Illinois at Urbana–Champaign)H-Index: 12
#2Stephen P. Long (UIUC: University of Illinois at Urbana–Champaign)H-Index: 92
Global climate change is likely to severely impact human food production. This comes at a time when predicted demand for primary foodstuffs by a growing human population and changing global diets is already outpacing a stagnating annual rate of increase in crop productivity. Additionally, the time required by crop breeding and bioengineering to release improved varieties to farmers is substantial, meaning that any crop improvements needed to mitigate food shortages in the 2040s would need to sta...
29 CitationsSource
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