Glutathione-dependent phytohormone responses

Calcium-Dependent Protein Kinases in Phytohormone Signaling Pathways

Calcium-dependent protein kinases (CPKs/CDPKs) are Ca2+-sensors that decode Ca2+ signals into specific physiological responses. Research has reported that CDPKs constitute a large multigene family in various plant species, and play diverse roles in plant growth, development, and stress responses. Although numerous CDPKs have been exhaustively studied, and many of them have been found to be invo...

The phytohormone precursor OPDA is isomerized in the insect gut by a single, specific glutathione transferase.

Oxylipins play important roles in stress signaling in plants. The compound 12-oxophytodienoic acid (cis-OPDA) is an early biosynthetic precursor of jasmonic acid (JA), the key phytohormone orchestrating the plant anti-herbivore defense. When consumed by feeding Lepidopteran larvae, plant-derived cis-OPDA suffers rapid isomerization to iso-OPDA in the midgut and is excreted in the frass. Unlike ...

Glutathione-dependent Synthesis of Deoxyribonucleotides

This reaction in vitro requires the combined function of three pure Escherichia coli proteins, namely the Bl and B2 subunits of ribonucleotide reductase and glutaredoxin. The stoichiometry was demonstrated by determinations of the products r3H]dCDP and GSSG. The standard assay couples oxidation of NADPH to the reduction of GSSG by glutathione reductase. The apparent K,,, value of glutaredoxin w...

Cellular Immune Responses in Sheep against Glutathione S-transferase of Fasciola gigantica

Physiological and Transcriptional Analyses Reveal Differential Phytohormone Responses to Boron Deficiency in Brassica napus Genotypes

Phytohormones play pivotal roles in the response of plants to various biotic and abiotic stresses. Boron (B) is an essential microelement for plants, and Brassica napus (B. napus) is hypersensitive to B deficiency. However, how auxin responds to B deficiency remained a dilemma for many years and little is known about how other phytohormones respond to B deficiency. The identification of B-effic...