Entries by Elisa Dell'Aglio

Barley RIPb opens the gates for epidermal fungal penetration

Elisa Dell’Aglio Institut National des Sciences Appliquées de Lyon Lyon, France elisa.dell-aglio@insa-lyon.fr  The ascomycete Blumeria graminis f. sp. hordei (Bgh) is a powdery mildew causal agent, specifically adapted to barley (Hordeum vulgare), wheat (Triticum aestivum, Triticum turgidum) and triticale (× Triticosecale). Bgh can cause up to 40% of yield losses (Draz et al., 2019) and […]

The vitamin B1 family grows: detection and roles of thiamine triphosphate in plants (Plant Direct)

The term “vitamin B1” indicates a family of molecules that includes thiamine, thiamine monophosphate and thiamine diphosphate (TDP). The latter is the most famous family member and plays a pivotal role in carbon metabolism. Thanks to an optimized detection protocol, Hofmann and colleagues have demonstrated that Arabidopsis thaliana shoots also produce thiamine triphosphate (TTP). The […]

P-HYDROXYPHENYLPYRUVATE DIOXYGENASE from Medicago sativa Is Involved in Vitamin E Biosynthesis and Abscisic Acid-Mediated Seed Germination (OA)

Sci. Rep. Vitamin E has been shown to scavenge singlet oxygen, reduce lipid oxidation by-products and inhibit lipid peroxidation, thereby helping plant defenses against various stresses. In this study, the authors identified MsHPPD as a key gene for vitamin E biosynthesis in alfalfa – an important crop and a model species for nitrogen fixation studies. The […]

What We’re Reading: June 15th Edition

Plant Vitamins and Cofactors Special Issue This week’s “What We’re Reading” summarizes recent findings on plant vitamin and cofactor biosynthesis and their role in plant defense responses. This selection includes two reviews and nine research papers. The first review focuses on biofortification strategies for cofactors and other plant nutrients to meet the nutritional needs of […]

Aldehyde Dehydrogenases Function in the Homeostasis of Pyridine Nucleotides in Arabidopsis thaliana (OA)

Sci. Rep. Aldehyde dehydrogenase enzymes (ALDHs) are very common proteins involved in the oxidation of aliphatic and aromatic aldehydes to their corresponding carboxylic acids, using NAD and NADP as electron acceptors. In this paper the authors explore the hypothesis that ALDHs are also important modulators of cellular redox homeostasis through modulation of NAD(P)/NAD(P)H ratios. They […]

A Lectin Receptor Kinase as a Potential Sensor for Extracellular Nicotinamide Adenine Dinucleotide in Arabidopsis thaliana (OA)

eLife Besides its role as an enzyme cofactor, NAD is also a plant signaling molecule. In particular, it leaks from wounded areas and activates defense pathways in the neighboring tissue, an effect that can be mimicked by application of extracellular NAD. The presence of a sensing mechanism for extracellular NAD levels was therefore suggested. To identify […]

Folate Biofortification of Potato by Tuber-Specific Expression of Four Folate Biosynthesis Genes ($)

Mol. Plant Deficiency in Vitamin B9 (folate) is one of the major causes of birth defects and maternal deaths. As potato is a staple crop for several populations worldwide, one strategy to reduce the risks of folate deficiency is the biofortification of potato. This would be extremely useful, as the natural variation in folate content is […]

The Arabidopsis Thiamin‐Deficient Mutant pale green1 Lacks Thiamin Monophosphate Phosphatase of the Vitamin B1 Biosynthesis Pathway ($)

Plant J. Plants have the capacity of building several vitamin compounds that animals must uptake with their diet instead. Some of these pathways, such as the B1 pathway, are extremely complex and still not completely elucidated. The At5g32470 gene was identified as a new thiamine monophosphate (TMP) phosphatase by Mimura et al, 2016. The analysis […]

Review: Toward Eradication of B-Vitamin Deficiencies: Considerations for Crop Biofortification (OA)

Front. Plant. Sci. Micronutrient malnutrition (or “hidden hunger”) is estimated to concern one fourth of the human population worldwide and its main victims are children and pregnant women. This review summarizes the biosynthetic pathways, the role in plant physiology and the recent efforts of the scientific community to overcome dietary deficiencies of three vitamins: B1, B6 […]