Search results for: Ingo Ensminger

Items from 1 to 14 out of 14 results

article

Rapid response of nonstructural carbohydrate allocation and photosynthesis to short photoperiod, low temperature, or elevated CO₂ in Pinus strobus

Christine Y. Chang, Faride Unda, Shawn D. Mansfield, Ingo Ensminger

Physiologia Plantarum > 175 > 6 > n/a - n/a

During autumn, decreasing photoperiod and temperature temporarily perturb the balance between carbon uptake and carbon demand in overwintering plants, requiring coordinated adjustments in photosynthesis and carbon allocation to re‐establish homeostasis. Here we examined adjustments of photosynthesis and allocation of nonstructural carbohydrates (NSCs) following a sudden shift to short photoperiod,...

article

Drone‐based physiological index reveals long‐term acclimation and drought stress responses in trees

Petra D'Odorico, Leonie Schönbeck, Valentina Vitali, Katrin Meusburger, more

Plant, Cell & Environment > 44 > 11 > 3552 - 3570

Monitoring early tree physiological responses to drought is key to understanding progressive impacts of drought on forests and identifying resilient species. We combined drone‐based multispectral remote sensing with measurements of tree physiology and environmental parameters over two growing seasons in a 100‐y‐old Pinus sylvestris forest subject to 17‐y of precipitation manipulation. Our goal was...

article

Champions of winter survival: cold acclimation and molecular regulation of cold hardiness in evergreen conifers

Christine Yao‐Yun Chang, Katharina Bräutigam, Norman P. A. Hüner, Ingo Ensminger

New Phytologist > 229 > 2 > 675 - 691

Evergreen conifers are champions of winter survival, based on their remarkable ability to acclimate to cold and develop cold hardiness. Counterintuitively, autumn cold acclimation is triggered not only by exposure to low temperature, but also by a combination of decreasing temperature, decreasing photoperiod and changes in light quality. These environmental cues control a network of signaling pathways...

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Variation in the phenology of photosynthesis among eastern white pine provenances in response to warming

Emmanuelle Fréchette, Christine Yao‐Yun Chang, Ingo Ensminger

Global Change Biology > 26 > 9 > 5217 - 5234

In higher‐latitude trees, temperature and photoperiod control the beginning and end of the photosynthetically active season. Elevated temperature (ET) has advanced spring warming and delayed autumn cooling while photoperiod remains unchanged. We assessed the effects of warming on the length of the photosynthetically active season of three provenances of Pinus strobus L. seedlings from different latitudes,...

article

Tracking the phenology of photosynthesis using carotenoid‐sensitive and near‐infrared reflectance vegetation indices in a temperate evergreen and mixed deciduous forest

Christopher Y.S. Wong, Petra D’Odorico, M. Altaf Arain, Ingo Ensminger

New Phytologist > 226 > 6 > 1682 - 1695

Photosynthetic phenology is an important indicator of annual gross primary productivity (GPP). Assessing photosynthetic phenology remotely is difficult for evergreen conifers as they remain green year‐round. Carotenoid‐based vegetation indices such as the photochemical reflectance index (PRI) and chlorophyll/carotenoid index (CCI) are promising tools to remotely track the invisible phenology of...

article

High‐throughput drone‐based remote sensing reliably tracks phenology in thousands of conifer seedlings

Petra D'Odorico, Ariana Besik, Christopher Y. S. Wong, Nathalie Isabel, more

New Phytologist > 226 > 6 > 1667 - 1681

Phenology is an important indicator of environmental variation and climate change impacts on tree responses. In conifers, monitoring phenology of photosynthesis through remote sensing has been unreliable, because needle foliage varies little throughout the year. This is challenging for modelling ecosystem carbon uptake and monitoring phenology for enhanced breeding (genomic selection) and forest...

article

Fast detection of leaf pigments and isoprenoids for ecophysiological studies, plant phenotyping and validating remote‐sensing of vegetation

Laura V. Junker, Ingo Ensminger

Physiologia Plantarum > 158 > 4 > 369 - 381

Rapid developments in remote‐sensing of vegetation and high‐throughput precision plant phenotyping promise a range of real‐life applications using leaf optical properties for non‐destructive assessment of plant performance. Use of leaf optical properties for assessing plant performance requires the ability to use photosynthetic pigments as proxies for physiological properties and the ability to detect...

article

Erratum to: Transcriptome responses to temperature, water availability and photoperiod are conserved among mature trees of two divergent Douglas-fir provenances from a coastal and an interior habitat

Moritz Hess, Henning Wildhagen, Laura Verena Junker, Ingo Ensminger

BMC Genomics > 2016 > 17 > 1 > 1-1

The online version of the original article can be found under doi: 10.1186/s12864-016-3022-6 .

article

Transcriptome responses to temperature, water availability and photoperiod are conserved among mature trees of two divergent Douglas-fir provenances from a coastal and an interior habitat

Moritz Hess, Henning Wildhagen, Laura Verena Junker, Ingo Ensminger

BMC Genomics > 2016 > 17 > 1 > 1-18

Background Local adaptation and phenotypic plasticity are important components of plant responses to variations in environmental conditions. While local adaptation has been widely studied in trees, little is known about plasticity of gene expression in adult trees in response to ever changing environmental conditions in natural habitats. Here we investigate plasticity of gene expression in needle...

article

Assessing the relationship between height growth and molecular genetic variation in Douglas-fir (Pseudotsuga menziesii) provenances

Charalambos Neophytou, Anna-Maria Weisser, Daniel Landwehr, Muhidin Šeho, more

European Journal of Forest Research > 2016 > 135 > 3 > 465-481

Douglas-fir (Pseudotsuga menziesii) is a conifer tree native to western North America. In central Europe, it shows superior growth performance and is considered a suitable substitute for tree species impaired in vitality due to climate change. Maintenance and improvement of growth performance in a changing environment is a main challenge for forest tree breeders. In this context, genetic variation...

article

Tree ring isotopic composition, radial increment and height growth reveal provenance-specific reactions of Douglas-fir towards environmental parameters

Kirstin Jansen, Jakob Sohrt, Ulrich Kohnle, Ingo Ensminger, more

Trees > 2013 > 27 > 1 > 37-52

In the search of timber species being tolerant towards summer droughts, which are expected to be more frequent in future, Douglas-fir is often discussed as a potential alternative for spruce in Central Europe. To assess physiological and growth reactions of Douglas-fir provenances towards climate- and weather-related environmental conditions we took advantage of a provenance trial with three sites...

article

Suitability of Illumina deep mRNA sequencing for reliable gene expression profiling in a non-model conifer species (Pseudotsuga menziesii)

Moritz Hess, Henning Wildhagen, Ingo Ensminger

Tree Genetics & Genomes > 2013 > 9 > 6 > 1513-1527

Pseudotsuga menziesii (Douglas-fir) is an ideal model system to study the effect of local adaptation and intraspecific variation in transcriptome responses to the environment. Nonetheless, the lack of genomic resources and standardized microarray platforms for gene expression profiling has been a limitation to test the hypothesis on transcriptome organization and variation. Only recently, deep mRNA...

article

Over‐expression of bacterial γ‐glutamylcysteine synthetase (GSH1) in plastids affects photosynthesis, growth and sulphur metabolism in poplar (Populus tremula × Populus alba) dependent on the resulting γ‐glutamylcysteine and glutathione levels

CORNELIA HERSCHBACH, LUCA RIZZINI, SUSANNE MULT, TANJA HARTMANN, more

Plant, Cell & Environment > 33 > 7 > 1138 - 1151

We compared three transgenic poplar lines over‐expressing the bacterial γ‐glutamylcysteine synthetase (GSH1) targeted to plastids. Lines Lggs6 and Lggs12 have two copies, while line Lggs20 has three copies of the transgene. The three lines differ in their expression levels of the transgene and in the accumulation of γ‐glutamylcysteine (γ‐EC) and glutathione (GSH) in leaves, roots and phloem exudates...

article

The Mangrove Ecosystem of the Cienaga Grande de Santa Marta (Colombia): Observations on Regeneration and Trace Metals in Sediment

Laura Perdomo, Ingo Ensminger, Luisa fernanda Espinosa, Carola Elster, more

Marine Pollution Bulletin > 1999 > 37 > 8-12 > 393-403

Alteration of water flows and consequent hypersalinization caused the death of nearly 70% of mangroves at the Cienaga Grande de Santa Marta, Colombia. Efforts to rehabilitate the ecosystem have been made through the construction of freshwater channels. Mangrove recovery was observed along a freshwater channel and at a small lagoon behind the beach ridge. Factors identified in this study influencing...

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Keywords

CHLOROPHYLL FLUORESCENCE (2)
CONIFER (2)
DRONE (2)
FUNCTIONAL TRAITS (2)
PHENOLOGY (2)
PHOTOPERIOD (2)
PIGMENTS (2)
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APS REDUCTASE (1)
ATP SULPHURYLASE (1)
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DECIDUOUS FOREST (1)
DEEP MRNA SEQUENCING (1)
DOUGLAS-FIR (1)
DROUGHT (1)
DROUGHT STRESS (1)
EASTERN WHITE PINE (PINUS STROBUS L.) (1)
ELEVATED TEMPERATURE (1)
EVERGREEN (1)
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EVERGREEN FOREST (1)
EVERGREENS (1)
GENE EXPRESSION (1)
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MIXED LINEAR MODELLING (1)
NATURAL ENVIRONMENT (1)
NEAR‐INFRARED REFLECTANCE OF VEGETATION (NIRV) (1)
NEXT-GENERATION SEQUENCING (1)
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PHLOEM (1)
PHOTOCHEMICAL REFLECTANCE INDEX (1)
PHOTOCHEMICAL REFLECTANCE INDEX (PRI) (1)
PHOTOPROTECTION (1)
PHOTOSYNTHESIS (1)
PHOTOSYNTHETIC GAS EXCHANGE (1)
PHOTOSYNTHETIC PIGMENTS (1)
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TEMPERATURE‐FREE‐AIR‐CONTROLLED ENHANCEMENT (T‐FACE) (1)
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UAV (1)
UNMANNED AERIAL VEHICLE (UAV) (1)
XANTHOPHYLL CYCLE PIGMENTS (1)
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Wiley (8)
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Search results for: Ingo Ensminger

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