Results 41 to 50 of about 1,405 (160)

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

Topic Modeling of Fatty Acid Studies: Evaluating Environmental Changes in Freshwater Ecosystems

International Review of Hydrobiology, Volume 111, Issue 1, June 2026.
ABSTRACT Fatty acids (FAs) are biochemical molecules with vital structural and metabolic functions in all living organisms. Over the last decades, FA analysis in ecological studies has garnered significant attention due to its diverse applicability, such as taxonomic support for species identification, investigations on trophic interactions, and ...
A. C. Campos, B. Gücker, I. G. Boëchat
wiley   +1 more source

Significant Role for Microbial Autotrophy in the Sequestration of Soil Carbon [PDF]

Applied and Environmental Microbiology, 2012
ABSTRACT Soils were incubated for 80 days in a continuously labeled 14 CO 2 atmosphere to measure the amount of labeled C incorporated into the microbial biomass. Microbial assimilation of 14 C differed between soils and accounted for 0.12% to 0.59% of soil ...
Hongzhao, Yuan, Tida, Ge, Caiyan, Chen, Anthony G, O'Donnell, Jinshui, Wu   +4 more
openaire   +2 more sources

An Integrated Assessment of European Soil Health and Restoration Potential

Journal of Sustainable Agriculture and Environment, Volume 5, Issue 2, June 2026.
ABSTRACT Soils host a significant proportion of biodiversity on Earth providing ecosystem functions vital to human well‐being, making it imperative to include them and their ecological features when addressing sustainability goals. We performed a comprehensive assessment of soil health across Europe by explicitly integrating biotic and abiotic ...
Irene Calderón‐Sanou, Cristiano Ballabio, Claudia Breitkreuz, Nico Eisenhauer, Arwyn Jones, Julia Köninger, Kirsten Küsel, Alberto Orgiazzi, Panos Panagos, Thomas Reitz, Sara Si‐Moussi, Bala Singavarapu, Carlos A. Guerra   +12 more
wiley   +1 more source

Prevalence of Autotrophy in Non-humic African Lakes

Ecosystems, 2022
Heterotrophic respiration of organic matter (OM) is thought to dominate over aquatic primary production (PP) in most freshwater lake ecosystems. This paradigm implies that lateral transport of OM from the terrestrial biosphere subsidize the major fraction of aquatic respiration and that many lakes are a net source of carbon dioxide (CO2) to atmosphere.
Morana, Cédric, Borges, Alberto, Deirmendjian, Loris, Okello, William, Sarmento, Hugo, Descy, Jean-Pierre, Kimirei, Ismael A., Bouillon, Steven   +7 more
openaire   +3 more sources

Evolutionary Routes to Modern Metabolic Pathways

Macromol
Metabolism, the network of biochemical reactions that powers life, arose under conditions radically different from those on Earth today. Investigating its origins reveals how initially simple chemical processes gradually integrated nucleic acid and then ...
Alberto Vázquez-Salazar, Israel Muñoz-Velasco   +1 more
doaj   +1 more source

Heterotrophy and symbiosis affect energy reserves for pedal lacerates in the sea anemone Exaiptasia diaphana [PDF]

PeerJ
Nutrient exchange between corals and their dinoflagellate symbionts is the foundation of the stable symbiosis that underpins coral reef ecosystem success.
Erick White, Maria Ruggeri, Virginia M. Weis   +2 more
doaj   +2 more sources

Organic Matter Stoichiometry Regulates the Continental Shelf Carbon Pump Efficiency of the Northwest European Shelf Seas

Global Biogeochemical Cycles, Volume 40, Issue 6, June 2026.
Abstract Variations in the elemental C:N:P ratios of organic matter (OM) influence the coupling of carbon and nutrient cycles in the ocean. In this study, we assess the relevance of OM C:N:P stoichiometry for regional carbon cycling in the northwest European shelf seas (NWES).
K. T. Demir, M. Mathis, J. Kossack, F. Liu, U. Daewel, C. Stegert, H. Thomas, C. Schrum   +7 more
wiley   +1 more source

Autotrophy in Maize Husk Leaves [PDF]

Plant Physiology, 1991
The natural abundance of carbon and hydrogen isotopic composition, expressed as a delta(13)C value of plant dry matter and cellulose in the hypsophylls (husk leaves) of maize (Zea mays L.) was measured and compared with that of leaves and cobs. The delta(13)C values of outer hypsophylls were usually 2 to 3% per thousand more negative than leaves or ...
D, Yakir, B, Osmond, L, Giles
openaire   +2 more sources

A challenge for 21st century molecular biology and biochemistry: what are the causes of obligate autotrophy and methanotrophy?

, 2004
We assess the use to which bioinformatics in the form of bacterial genome sequences, functional gene probes and the protein sequence databases can be applied to hypotheses about obligate autotrophy in eubacteria.
Aurikko, J P, Wood, A P, Kelly, D P, Ann P. Wood, Jukka P. Aurikko, Donovan P. Kelly   +5 more
core   +2 more sources