A. J. Meyer

Abscisic acid signaling gates salt-specific responses of plant roots

This study shows that ABA signaling suppresses sodium-specific gene responses in Arabidopsis roots and protects against salt-induced cellular damage.

Chloroplasts lacking class I glutaredoxins are functional but show a delayed recovery of protein cysteinyl redox state after oxidative challenge

The paper shows that removing class I GRX activity in the chloroplast stroma of P. patens delays protein cysteine redox recovery after oxidative stress without affecting photosynthesis or NPQ.

PLANT UNCOUPLING MITOCHONDRIAL PROTEIN 2 localizes to the Golgi

The paper shows that UCP2 in Arabidopsis localizes to the Golgi instead of mitochondria, challenging previous assumptions about its function and highlighting the need for independent localization evidence.

CYP79B2 and CYP79B3 contribute to root branching through production of the auxin precursor indole-3-acetonitrile

This study shows that CYP79B2 and CYP79B3 regulate lateral root density under salt stress by producing the auxin precursor indole-3-acetonitrile (IAN).

Localization of four class I glutaredoxins in the cytosol and the secretory pathway and characterization of their biochemical diversification

The paper identifies the subcellular localization and biochemical properties of four class I glutaredoxins in Arabidopsis, showing distinct redox activities and membrane associations.

Altered iron-sulfur cluster transfer in Arabidopsis mitochondria reveals lipoyl synthase as a Janus-faced enzyme that generates toxic sulfide

The paper shows that altered iron-sulfur cluster transfer in Arabidopsis mitochondria leads to toxic sulfide release by lipoyl synthase, affecting plant growth and sulfide homeostasis.

Root branching in salt requires auxin-independent modulation of LBD16 function

The paper shows that salt stress modulates lateral root development through an auxin-independent pathway involving ZAT6 and LBD16.

High robustness of cytosolic glutathione redox potential under combined salt and osmotic stress in barley as revealed by the biosensor Grx1-roGFP2

The paper generates and characterizes barley plants expressing Grx1-roGFP2, showing cytosolic glutathione redox potential remains stable under combined salt and osmotic stress.

Live monitoring of ROS-induced cytosolic redox changes with roGFP2-based sensors in plants

The paper describes protocols for live monitoring of cytosolic redox changes in plants using roGFP2-based sensors for hydrogen peroxide and glutathione redox potential.

Chloroplast-derived photo-oxidative stress causes changes in H2O2 and EGSH in other subcellular compartments

The paper uses redox biosensors to show that chloroplast-derived ROS from methyl viologen causes H2O2 and glutathione oxidation in chloroplasts, cytosol, and mitochondria.

GSTU7 affects growth performance and acts as an antagonist of oxidative stress induced by methyl viologen

This study shows GSTU7 is essential for plant antioxidant defense, improving growth and reducing oxidative stress from methyl viologen.

Branched-chain amino acid catabolism depends on GRXS15 through mitochondrial lipoyl cofactor homeostasis

The paper shows that GRXS15 deficiency disrupts mitochondrial lipoyl cofactor homeostasis, leading to metabolic defects in lipoyl cofactor-dependent dehydrogenase complexes, particularly affecting branched-chain amino acid catabolism.

Redox-mediated Kick-Start of Mitochondrial Energy Metabolism drives Resource-efficient Seed Germination

The paper identifies redox-mediated activation of mitochondrial energy metabolism as critical for efficient seed germination in Arabidopsis.

Low-glutathione mutants are impaired in growth but do not show an increased sensitivity to moderate water deficit

The paper phenotypically characterizes low-glutathione Arabidopsis mutants under control and drought conditions, finding reduced growth but no increased drought sensitivity.

Arabidopsis glutathione reductase 2 is indispensable in plastids, while mitochondrial glutathione is safeguarded by additional reduction and transport systems

The paper investigates the role of GR2 in maintaining glutathione redox homeostasis in plastids and mitochondria of Arabidopsis, showing its essential function in plastids and partial redundancy in mitochondria.

Chloroplasts Require Glutathione Reductase to Balance Reactive Oxygen Species and Maintain Efficient Photosynthesis

This study shows that glutathione reductase is essential for maintaining a reducing stromal glutathione redox potential in chloroplasts, which supports efficient photosynthesis and plant growth.