Results 61 to 70 of about 12,819 (218)

Prebiotic aqueous reactions catalyzed by native nickel without hydrogen

The FEBS Journal, EarlyView.
Serpentinizing (H2‐producing) hydrothermal vents are candidate environments for metabolic origin. They generate highly reducing conditions that convert CO2 to formate and methane in abiotic reactions resembling reactions of the acetyl‐CoA pathway of CO2 fixation. They also contain natural catalysts. Native nickel (Ni0), like Fe0, Co0, and their alloys,
Carolina Garcia Garcia, Max Brabender, William F. Martin   +2 more
wiley   +1 more source

Tolyporphins–Exotic Tetrapyrrole Pigments in a Cyanobacterium—A Review

Molecules, 2023
Tolyporphins were discovered some 30 years ago as part of a global search for antineoplastic compounds from cyanobacteria. To date, the culture HT-58-2, comprised of a cyanobacterium–microbial consortium, is the sole known producer of tolyporphins ...
Kathy-Uyen Nguyen, Yunlong Zhang, Qihui Liu, Ran Zhang, Xiaohe Jin, Masahiko Taniguchi, Eric S. Miller, Jonathan S. Lindsey   +7 more
doaj   +1 more source

GmDOF3.1‐GmCPX Module Regulates Nodulation and Nitrogen Fixation Abilities in Soybean

Plant Biotechnology Journal, EarlyView.
ABSTRACT Soybean nodule nitrogen fixation is very important, which can provide a large amount of nitrogen supply for its own growth and that of other crops, but the mechanism is largely unclear. In the present study, a coproporphyrinogen oxidase gene, GmCPX, was identified to facilitate soybean nodulation and nitrogen‐fixation under the regulation of ...
Xinzhu Xing, Zhanwu Yang, Zhenqi Shao, Hui Du, Hua Zhang, Huantao Zhang, Xiaobo Huo, Wenlong Li, Youbin Kong, Xihuan Li, Caiying Zhang   +10 more
wiley   +1 more source

Tetrapyrrole synthesis in Bacillus subtilis [PDF]

, 1994
This thesis describes tetrapyrrole synthesis in the aerobic Gram positive bacterium Bacillus sub-tilis. Tetrapyrroles such as heme of a-, b-, c-, d- and o-type can be synthesised in this organism. In addition, there is strong evidence for the presence of
Hansson, Mats,, Lund University.
core   +2 more sources

Vestigial Plastids in Parasitic Plants: Evolutionary Remnants or Adaptive Innovations?

Plant, Cell &Environment, EarlyView.
ABSTRACT Throughout the evolutionary history of plants, chloroplasts originating from a cyanobacterial endosymbiosis have undergone remarkable adaptation and specialization, giving rise to a multitude of plastid types. The evolution toward parasitism in plants represents a particularly extreme case of such specialization.
Laia Jené, Sergi Munné‐Bosch
wiley   +1 more source

Alkylpyrroles in a kerogen pyrolysate: Evidence for abundant tetrapyrrole pigments [PDF]

, 1992
C1-C6 alkylated pyrroles were identified as major constituents of the flash pyrolysate of a kerogen from the Miocene Monterey Formation (California, USA) using gas chromatography with an N-selective detector and gas chromatography-mass spectrometry.
Leeuw, J.W. de, Eglinton, T.I., Sinninghe Damsté, J.S.   +2 more
core  

Localization of heme biosynthesis in the diatom Phaeodactylum tricornutum and differential expression of multi-copy enzymes

Frontiers in Plant Science
Heme is essential for all organisms. The composition and location of the pathway for heme biosynthesis, have been influenced by past endosymbiotic events and organelle evolution in eukaryotes.
Shun-Min Yang, Shun-Min Yang, Ansgar Gruber, Ansgar Gruber, Kateřina Jiroutová, Jitka Richtová, Marie Vancová, Marie Vancová, Martina Tesařová, Petra Masařová, Richard G. Dorrell, Miroslav Oborník, Miroslav Oborník   +12 more
doaj   +1 more source

MdPHYB2‐MdPIF1 Module Regulates Transcription Factors to Mediate Light‐Dependent ALA‐Induced Apple Anthocyanin Biosynthesis

Plant, Cell &Environment, EarlyView.
ABSTRACT Light is a primary environmental signal that induces plant anthocyanin accumulation. The plant growth regulator 5‐aminolevulinic acid (ALA) has also been proven to effectively promote anthocyanin accumulation in apple. However, the underlying regulatory mechanisms remain unknown.
Liuzi Zhang, Yuyan An, Jianting Zhang, Liangju Wang   +3 more
wiley   +1 more source

Ultrafast Dynamics of Sb-Corroles: A Combined Vis-Pump Supercontinuum Probe and Broadband Fluorescence Up-Conversion Study

Molecules, 2017
Corroles are a developing class of tetrapyrrole-based molecules with significant chemical potential and relatively unexplored photophysical properties.
Clark Zahn, Till Stensitzki, Mario Gerecke, Alexander Berg, Atif Mahammed, Zeev Gross, Karsten Heyne   +6 more
doaj   +1 more source

Time‐series multi‐omics analysis of micronutrient stress in Sorghum bicolor reveals iron and zinc crosstalk and regulatory network conservation

Plant Biology, EarlyView.
Overlap between Fe and Zn responsive gene regulatory networks (GRNs) were found, indicative of micronutrient crosstalk, and conservation of root and leaf GRNs and genes suggests strong constraint on homeostasis networks in plants. Abstract Micronutrient stress impacts growth, biomass production, and grain yield in crops.
A. Mishra, A. Bhat, S. Kumari, R. Sharma, J. Braynen, D. Tadesse, S. El Alaoui, S. Seaver, N. Grosjean, D. Ware, M. Xie, T. Paape   +11 more
wiley   +1 more source