Results 71 to 80 of about 21,933 (182)
The Hemoprotein Hhy1 Promotes Heme‐Dependent Catalase Activity of Ctt1
Molecular Microbiology, EarlyView.A Schizosaccharomyces pombe strain deficient in heme (hem1Δ) and siderophore (Fc) biosynthesis, as well as high‐affinity iron (Fe) uptake (blue), was used to uncover the hemoprotein Hhy1 that promotes the heme‐dependent activity of the catalase Ctt1. In contrast, hhy1Δ cells exhibit reduced Ctt1 activity and increased sensitivity to oxidative stress ...
Tobias Vahsen +3 more
wiley +1 more source
Frontiers in Microbiology, 2017 A central question in microbial ecology is whether microbial interactions are predominantly cooperative or competitive. The secretion of siderophores, microbial iron chelators, is a model system for cooperative interactions.
Konstanze T. Schiessl +6 more
doaj +1 more source
Rôle du régulateur Fur et des petits ARN non codants RfrA et RfrB dans l’homéostasie du fer et la virulence de Salmonella [PDF]
, 2013 La régulation de l’homéostasie du fer est cruciale chez les bactéries. Chez Salmonella, l’expression des gènes d’acquisition et du métabolisme du fer au moment approprié est importante pour sa survie et sa virulence. Cette régulation est effectuée par la
Leclerc, Jean-Mathieu
core
Deciphering the biosynthetic pathways of lichen acids
New Phytologist, EarlyView.Summary Depsides and depsidones are polyketide‐derived lichen acids widely distributed in lichen thalli, yet the biosynthetic gene clusters (BGCs) responsible for their production remain poorly understood. To address this gap, we investigated the diversity and evolutionary relationships of polyketide BGCs in lichens.
Wonyong Kim +11 more
wiley +1 more source
Journal of Plant Protection Research, 2018 Fluorescent Pseudomonas (FP) is a major group of plant growth promoting rhizobacteria and a well-known synthesizer of siderophores, which imparts a selective advantage on rhizosphere competence and their biocontrol traits.
Monali Deori +2 more
doaj +1 more source
Caractérisation de souches d'Escherichia coli pathogènes urinaires provenant de Guadeloupe: portrait de la diversité des facteurs de virulences présents [PDF]
, 2016 Les E. coli uropathogènes (UPEC) sont responsables d’environ 80% des infections du tractus urinaire (ITUs). La diversité des souches d’UPEC ainsi que leurs facteurs de virulences peuvent varier selon la région géographique.
Maris, Ségolène
core
Plant Biotechnology Journal, EarlyView.ABSTRACT Soybean is a critical source of protein and vegetable oil worldwide. Expanding its cultivation into salinity lands represents a promising strategy for increasing production; however, soil salinity severely limits soybean growth by disrupting physiological and metabolic homeostasis.
Wanying Zhang +13 more
wiley +1 more source
Etude du rôle des sidérophores microbiens dans la modulation des défenses de la plante Arabidopsis thaliana [PDF]
, 2014 Iron is an essential element for almost all living organisms, however, it is not bioavailable and is toxic in its free form as it generates reactive oxygen species via the Fenton reaction.
Aznar, Aude
core +2 more sources
Plant, Cell &Environment, EarlyView.ABSTRACT Plants have evolved highly efficient strategies to maintain iron (Fe) homeostasis. In this study, we investigate the impact of arbuscular mycorrhizal (AM) symbiosis on the Fe‐deficiency response and ionomic profile of tomato plants, as well as how Fe availability affects AM symbiosis.
Víctor M. López‐Lorca +3 more
wiley +1 more source
Dynamique des nutriments à l'interface sol/organismes : importance du phosphore et du molybdène dans la symbiose et le mutualisme fixateurs d'azote en forêt boréale. [PDF]
, 2015 Les cycles biogéochimiques des éléments chimiques jouent un rôle essentiel dans le fonctionnement et l'évolution de tous les écosystèmes. Les éléments essentiels pour la vie sont les macro et micronutriments.
Pourhassan Zenoz, Nina
core +1 more source