Ivo Feußner
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View article: Reducing the Sinapine Levels of <scp> <i>Camelina sativa</i> </scp> Seeds Through Targeted Genome Editing of <scp> <i>REF1</i> </scp>
Reducing the Sinapine Levels of <span> <i>Camelina sativa</i> </span> Seeds Through Targeted Genome Editing of <span> <i>REF1</i> </span> Open
Sinapine ( O ‐sinapoyl choline) is the major phenolic metabolite typically found in the oil‐rich seeds of Brassicaceae such as Camelina sativa and Brassica napus . It imparts a bitter taste to the seeds as a defence mechanism against herbi…
View article: Octadecanoids as emerging lipid mediators in cnidarian-dinoflagellate symbiosis
Octadecanoids as emerging lipid mediators in cnidarian-dinoflagellate symbiosis Open
Oxylipin signaling has been suggested as a potential mechanism for the inter-partner recognition and homeostasis regulation of cnidarian-dinoflagellate symbiosis, which maintains the ecological viability of coral reefs. Here we assessed th…
View article: Complex sphingolipid metabolism impacts cell division and plasmodesmal development in the moss <i>Physcomitrium patens</i>
Complex sphingolipid metabolism impacts cell division and plasmodesmal development in the moss <i>Physcomitrium patens</i> Open
Developmental patterning and organ structure are elegantly simple in the moss Physcomitrium patens, which facilitates the cultivation and phenotypic characterization of severe mutant alleles. Essential membrane lipids, such as complex phos…
View article: Discovery of tomato UDP-glucosyltransferases involved in bioactive jasmonate homeostasis using limited proteolysis-coupled mass spectrometry
Discovery of tomato UDP-glucosyltransferases involved in bioactive jasmonate homeostasis using limited proteolysis-coupled mass spectrometry Open
Jasmonic acid (JA) is the precursor of the bioactive molecule jasmonoyl-isoleucine (JA-Ile), a plant hormone that regulates fitness and development. Although JA biosynthesis, signaling, and responses have been intensively studied, the cata…
View article: The <i>Spirogyra</i> genome: signatures of shared and divergent division and differentiation
The <i>Spirogyra</i> genome: signatures of shared and divergent division and differentiation Open
Zygnematophytes emerged as the unexpected closest algal relatives of land plants despite their simple body plans, raising questions about the morphogenetic toolkit present in the last common ancestor of land plants and algae. Genomic analy…
View article: Targeted mutagenesis of FATTY ACID ELONGASE 1 entails near complete elimination of very long chain fatty acids in the seeds of camelina cultivar Ligena
Targeted mutagenesis of FATTY ACID ELONGASE 1 entails near complete elimination of very long chain fatty acids in the seeds of camelina cultivar Ligena Open
Genome editing has the potential to enhance yield and quality traits of crops. However, standard genetic transformation methods are not always applicable to modern germplasm. To tackle this challenge in the widely cultivated variety Ligena…
View article: Hidden route to salicylic acid has finally been uncovered
Hidden route to salicylic acid has finally been uncovered Open
View article: Setaphyte VERY-LONG-CHAIN FATTY ACYL DESATURASES are desaturases that impact glycerolipid and sphingolipid metabolism
Setaphyte VERY-LONG-CHAIN FATTY ACYL DESATURASES are desaturases that impact glycerolipid and sphingolipid metabolism Open
Desaturases in plants are diverse. They vary in localization, source of reducing power, and substrate preference, accepting glycerolipids, long-chain bases, acyl-CoAs, and acyl-ACPs, in varying states of (un)saturation and chain length. Th…
View article: The jojoba lipid droplet protein LDAP1 facilitates the packaging of wax esters into lipid dropletsy
The jojoba lipid droplet protein LDAP1 facilitates the packaging of wax esters into lipid dropletsy Open
Jojoba (Simmondsia chinensis) is a desert shrub with an unusual capacity to store liquid wax esters (WEs) in its seeds instead of triacylglycerols (TAGs) like most oilseed crops. To examine the factors that are important for WE compartment…
View article: Transcriptomics and trans-organellar complementation reveal limited signaling of 12-cis-oxo-phytodienoic acid during early wound response in Arabidopsis
Transcriptomics and trans-organellar complementation reveal limited signaling of 12-cis-oxo-phytodienoic acid during early wound response in Arabidopsis Open
12- cis -oxo-phytodienoic acid (OPDA), a precursor of jasmonoyl-isoleucine (JA-Ile), is known to have distinct signaling roles in Arabidopsis, as shown in studies using the opr3 mutant, which lacks OPDA REDUCTASE3 (OPR3). This mutant, howe…
View article: An extragenic second-site mutation in the jar1-1 mutant suppresses the response to photoperiod stress independent of jasmonic acid
An extragenic second-site mutation in the jar1-1 mutant suppresses the response to photoperiod stress independent of jasmonic acid Open
View article: Ectopic expression of wax ester synthase under a wood-specific promoter enhances cell wall production and wood hydrophobicity
Ectopic expression of wax ester synthase under a wood-specific promoter enhances cell wall production and wood hydrophobicity Open
Background Many industrial applications of wood and woody biomass require harsh physicochemical pretreatments to improve the hydrophobicity and durability of the products. Environmentally friendly wood biorefineries necessitate the replace…
View article: Algal origins of core land plant stress response subnetworks
Algal origins of core land plant stress response subnetworks Open
SUMMARY We computed co‐expression networks from more than 2200 samples of nine species across 600 million years of divergent streptophyte evolution and infer that the streptophyte algal ancestors of land plants already had a remarkable fra…
View article: Overexpression of jojoba wax ester synthase in poplar increases foliar lipid accumulation, alters stomatal conductance, and increases water use efficiency
Overexpression of jojoba wax ester synthase in poplar increases foliar lipid accumulation, alters stomatal conductance, and increases water use efficiency Open
Poplars are important fast‐growing, water‐spending biomass tree crops. Here, we targeted the wax biosynthesis pathway of Populus × canescens by overexpressing jojoba ( Simmondsia chinensis ) wax ester synthase ( Sc WS) for the production o…
View article: Identification of <scp>INOSITOL PHOSPHORYLCERAMIDE SYNTHASE</scp> 2 ( <scp>IPCS2</scp> ) as a new rate‐limiting component in Arabidopsis pathogen entry control
Identification of <span>INOSITOL PHOSPHORYLCERAMIDE SYNTHASE</span> 2 ( <span>IPCS2</span> ) as a new rate‐limiting component in Arabidopsis pathogen entry control Open
SUMMARY INOSITOL PHOSPHORYLCERAMIDE SYNTHASE 2 (IPCS2) is involved in the biosynthesis of complex sphingolipids at the trans ‐Golgi network (TGN). Here, we demonstrate a role of IPCS2 in penetration resistance against non‐adapted powdery m…
View article: <i>Arabidopsis</i> <scp>GH3</scp> .10 conjugates jasmonates
<i>Arabidopsis</i> <span>GH3</span> .10 conjugates jasmonates Open
Jasmonates regulate plant development and defence. In angiosperms, the canonical bioactive jasmonate is jasmonoyl‐isoleucine (JA‐Ile), which is formed in Arabidopsis thaliana by JAR1 and GH3.10. In contrast to other jasmonate biosynthesis …
View article: Time-resolved oxidative signal convergence across the algae–embryophyte divide
Time-resolved oxidative signal convergence across the algae–embryophyte divide Open
View article: <i>Toll/interleukin-1 receptor-only</i> genes contribute to immune responses in maize
<i>Toll/interleukin-1 receptor-only</i> genes contribute to immune responses in maize Open
Proteins with Toll/interleukin-1 receptor (TIR) domains are widely distributed in both prokaryotes and eukaryotes, serving as essential components of immune signaling. Although monocots lack the major TIR nucleotide-binding leucine-rich re…
View article: Octadecanoids as emerging lipid mediators in cnidarian-dinoflagellate symbiosis
Octadecanoids as emerging lipid mediators in cnidarian-dinoflagellate symbiosis Open
Oxylipin signaling has been suggested as a potential mechanism for the inter-partner recognition and homeostasis regulation of cnidarian-dinoflagellate symbiosis, which maintains the ecological viability of coral reefs. Here we assessed th…
View article: Identification of INOSITOL PHOSPHORYLCERAMIDE SYNTHASE 2 (IPCS2) as a new rate-limiting component in Arabidopsis pathogen entry control
Identification of INOSITOL PHOSPHORYLCERAMIDE SYNTHASE 2 (IPCS2) as a new rate-limiting component in Arabidopsis pathogen entry control Open
INOSITOL PHOSPHORYLCERAMIDE SYNTHASE 2 (IPCS2) is involved in the biosynthesis of complex sphingolipids at the trans-Golgi network (TGN). Here, we demonstrate a role of IPCS2 in penetration resistance against non-adapted powdery mildew fun…
View article: Impact of exogenous rhamnolipids on plant photosynthesis and biochemical parameters under prolonged heat stress
Impact of exogenous rhamnolipids on plant photosynthesis and biochemical parameters under prolonged heat stress Open
High temperatures severely affect plant growth and development leading to major yield losses. These temperatures are expected to increase further due to global warming, with longer and more frequent heat waves. Rhamnolipids (RLs) are known…
View article: On the origin of fatty acid biosynthesis in <i>Archaeplastida</i>
On the origin of fatty acid biosynthesis in <i>Archaeplastida</i> Open
This article comments on: Sato N, Ikemura E, Uemura M, Awai K. 2025. Genomic and biochemical analyses of lipid biosynthesis in Cyanophora paradoxa: limited role of the chloroplast in fatty acid synthesis. Journal of Experimental Botany 76,…
View article: Octadecanoids as emerging lipid mediators in cnidarian-dinoflagellate symbiosis
Octadecanoids as emerging lipid mediators in cnidarian-dinoflagellate symbiosis Open
Oxylipin signaling has been suggested as a potential mechanism for the inter-partner recognition and homeostasis regulation of cnidarian-dinoflagellate symbiosis, which maintains the ecological viability of coral reefs. Here we assessed th…
View article: Complex sphingolipids are essential for cell division and plasmodesmal development in the moss<i>Physcomitrium patens</i>
Complex sphingolipids are essential for cell division and plasmodesmal development in the moss<i>Physcomitrium patens</i> Open
Developmental patterning and organ structure are elegantly simple in the moss Physcomitrium patens . In molecular genetic studies, this facilitates both the cultivation of severe mutant alleles and their phenotypic characterization. Essent…
View article: Herbicides as fungicides: Targeting heme biosynthesis in the maize pathogen <i>Ustilago maydis</i>
Herbicides as fungicides: Targeting heme biosynthesis in the maize pathogen <i>Ustilago maydis</i> Open
Pathogens must efficiently acquire nutrients from host tissue to proliferate, and strategies to block pathogen access therefore hold promise for disease control. In this study, we investigated whether heme biosynthesis is an effective targ…
View article: Biotic interactions, evolutionary forces and the pan-plant specialized metabolism
Biotic interactions, evolutionary forces and the pan-plant specialized metabolism Open
Plant specialized metabolism has a complex evolutionary history. Some aspects are conserved across the green lineage, but many metabolites are unique to certain lineages. The network of specialized metabolism continuously diversified, simp…
View article: Coenzyme A biosynthesis in <i>Bacillus subtilis</i> : discovery of a novel precursor metabolite for salvage and its uptake system
Coenzyme A biosynthesis in <i>Bacillus subtilis</i> : discovery of a novel precursor metabolite for salvage and its uptake system Open
The Gram-positive model bacterium Bacillus subtilis is used for many biotechnological applications, including the large-scale production of vitamins. For vitamin B5, a precursor for coenzyme A synthesis, there is so far no established ferm…
View article: Small size, big impact: Small molecules in plant systemic immune signaling
Small size, big impact: Small molecules in plant systemic immune signaling Open
Plants produce diverse small molecules rapidly in response to localized pathogenic attack. Some of the molecules are able to migrate systemically as mobile signals, leading to the immune priming that protects the distal tissues against fut…
View article: Balancing roles between phosphatidylinositols and sphingolipids in regulating immunity and ER stress responses in <i>pi4kβ1,2</i>
Balancing roles between phosphatidylinositols and sphingolipids in regulating immunity and ER stress responses in <i>pi4kβ1,2</i> Open
SUMMARY Plant immune regulation is complex. In addition to proteins, lipid molecules play critical roles in modulating immune responses. The mutant pi4kβ1 , 2 is mutated in two phosphatidylinositol 4‐kinases PI4Kβ1 and β2 involved in the b…
View article: Contrasting and conserved roles of <scp>NPR</scp> pathways in diverged land plant lineages
Contrasting and conserved roles of <span>NPR</span> pathways in diverged land plant lineages Open
Summary The NPR proteins function as salicylic acid (SA) receptors in Arabidopsis thaliana . AtNPR1 plays a central role in SA‐induced transcriptional reprogramming whereby positively regulates SA‐mediated defense. NPRs are found in the ge…