Results 71 to 80 of about 13,726 (266)

First Insights on Photoreceptor Organ Ultrastructure in Marine Chaetonotida (Gastrotricha): Species of Xenotrichula and Draculiciteria (Xenotrichulidae)

Acta Zoologica, EarlyView.
ABSTRACT Marine gastrotrichs inhabit sediments with limited available light, yet evidence suggests that photoreceptor organs are present throughout the phylum Gastrotricha. Here, we confirm this proposition with ultrastructural descriptions of photoreceptive organs in two species of Xenotrichulidae (Order Chaetonotida) that lack pigmented ocelli ...
Thiago Quintão Araújo, Rick Hochberg
wiley   +1 more source

Quality of Dissolved Organic Matter Driven by Autotrophic and Heterotrophic Microbial Processes in a Large River

, 2020
Rivers are regarded as important sites for processing of dissolved organic matter (DOM) from terrestrial sources on its way to the ocean. However, little is known about the longitudinal change of DOM molecular composition in large rivers.
Oliver J. Lechtenfeld, Norbert Kamjunke, Peter Herzsprung   +2 more
core   +1 more source

Prokaryotic responses to ammonium and organic carbon reveal alternative CO2 fixation pathways and importance of alkaline phosphatase in the mesopelagic North Atlantic

Frontiers in Microbiology, 2016
To decipher the response of mesopelagic prokaryotic communities to input of nutrients, we tracked changes in prokaryotic abundance, extracellular enzymatic activities, heterotrophic production, dark dissolved inorganic carbon (DIC) fixation, community ...
Federico Baltar, Federico Baltar, Daniel Lundin, Joakim Palovaara, Itziar Lekunberri, Thomas Reinthaler, Gerhard Josef Herndl, Jarone Pinhassi   +7 more
doaj   +1 more source

Recent advances of emergent extraction technologies to enhance bioactive compounds extraction of microalgae—An overview towards application in cosmetics

International Journal of Cosmetic Science, EarlyView.
Microalgae extracts show immense potential in cosmetics for their bioactivities; emerging extraction techniques enhance bioactive compound yield from microalgae. Abstract Microalgae have attracted significant interest in numerous sectors, particularly in the cosmetic industries, owing to their rich composition of bioactive compounds. This paper aims to
Alireza Mousakhani Ganjeh, Lucília da P. da Silva, Carlos A. Pinto, Rosário Martins, Alexandra P. Marques, Jorge A. Saraiva   +5 more
wiley   +1 more source

Different Microeukaryotic Trophic Groups Show Different Latitudinal Spatial Scale Dependences in Assembly Processes across the Continental Shelves of China

Microorganisms
The relative role of stochasticity versus determinism is critically dependent on the spatial scale over which communities are studied. However, only a few studies have attempted to reveal how spatial scales influence the balance of different assembly ...
Yong Zhang, Zhishuai Qu, Kexin Zhang, Jiqiu Li, Xiaofeng Lin   +4 more
doaj   +1 more source

Pentatricopeptide repeat proteins in crops: Advances in functional mechanisms and breeding applications

Journal of Integrative Plant Biology, EarlyView.
Pentatricopeptide repeat proteins coordinate nucleus‐organelle communication by modulating RNA metabolism within chloroplasts and mitochondria. This review highlights how they control critical processes like photosynthesis, seed development, fertility restoration, and stress survival in crops, and explores their potential as programmable tools for RNA ...
Mingming Wu, Maohong Cai, Rongrong Zhai, Jing Ye, Guofu Zhu, Faming Yu, Shenghai Ye, Xiaoming Zhang   +7 more
wiley   +1 more source

Sulfide-driven autotrophic denitrification significantly reduces N₂O emissions

, 2016
The Sulfate reduction-Autotrophic denitrification-Nitrification Integrated (SANI) process build on anaerobic carbon conversion through biological sulfate reduction and autotrophic denitrification by using the sulfide byproduct from the previous reaction.
Yang, Weiming, Zhao, Qing, Lu, Hui, Meng, Liao, Chen, Guang Hao, Ding, Zhi   +5 more
core   +1 more source

Insights into Pyrite-Based Autotrophic Denitrification: Impacts of the Initial Addition of Organic Co-Substrates at a Low Concentration

Nitrogen
Pyrite-based autotrophic denitrification is an effective method for nitrate removal. However, pyrite does not exist alone and is inevitably accompanied by the presence of organic matter in nature, and thus the influence of organic co-substrates on pyrite-
Baokun Xu, Lihong Zhang, Niannian Yuan, Yujiang Xiong, Haolong Fu   +4 more
doaj   +1 more source

Dinoflagellate responses to nutrients and mangrove leaf organic matter in the bioluminescent Mangrove Lagoon, St. Croix, U.S. Virgin Islands

Journal of Phycology, EarlyView.
Abstract Bioluminescent bays (biobays) are uncommon coastal ecosystems featuring dense populations of dinoflagellates, often found in mangrove‐ringed lagoons with long water retention times and high organic matter (OM) levels. Although mangroves are associated with high dinoflagellate abundance, it remains uncertain how inorganic nutrients compare with
James L. Pinckney, Michelle Zimberlin, Dianne I. Greenfield   +2 more
wiley   +1 more source

Avaliação de parâmetros cinéticos de uma cultura mista de microorganismos destinados à eliminação autotrófica de nitrogênio via oxidação de tiossulfato [PDF]

, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.o principal impacto ambiental inerente da atividade industrial é a poluição dos recursos hídricos, devido ao lançamento ...
Amim, Rafael dos Santos
core