Results 51 to 60 of about 17,336 (190)

Chemotactic responses of Chlamydomonas reinhardtii. [PDF]

Molecular and Cellular Biology, 1981
A capillary chemotaxis assay revealed that among a wide range of inorganic and organic chemicals, only ammonium ion (NH4+) could serve as an attractant of Chlamydomonas reinhardtii. NH4+ (10(-2) M) gave the maximum response, with up to a 15-fold increase in accumulated algae being measured. No repellents for the chlorophyte were detected.
R D, Sjoblad, P H, Frederikse
openaire   +2 more sources

Chlamydomonas IFT25 is dispensable for flagellar assembly but required to export the BBSome from flagella

Biology Open, 2017
Intraflagellar transport (IFT) particles are composed of polyprotein complexes IFT-A and IFT-B as well as cargo adaptors such as the BBSome. Two IFT-B subunits, IFT25 and IFT27 were found to form a heterodimer, which is essential in exporting the BBSome ...
Bin Dong, Song Wu, Jing Wang, Yan-Xia Liu, Zhao Peng, De-Mei Meng, Kaiyao Huang, Mingfu Wu, Zhen-Chuan Fan   +8 more
doaj   +1 more source

Cell‐Based Micro/Nanorobots: From Living Carriers to Living Therapeutic Specialists

SmartBot, EarlyView.
Cell‐based micro/nanorobots integrate evolutionarily acquired biological intelligence with engineered capabilities, offering new opportunities for precision medicine in vivo. However, the complex physiological environments of different organs pose significant challenges to their clinical translation.
Junfeng Wu, Zhaoyu Zhang, Ke Xu, Enkuo Li, Yuting Cui, Yuting Zhou, Huanyu Zhou, Beipei Zhang, Shuai Jiang, Xiaodong Wang, Jialin Jiang, Lianqing Liu, Niandong Jiao   +12 more
wiley   +1 more source

Flagellar assembly in Chlamydomonas reinhardtii regulated by intraflagellar transport protein IFT81

工程科学学报, 2015
A Chlamydomonas reinhardtii immobile mutant named ift81 was screened by insertional mutagenesis. The mutant was bald or with two short flagella. Gene sequencing confirmed that fifty-two base pairs in the fifth extron of IFT81 gene were replaced by the ...
SUN Juan
doaj   +1 more source

Influence of Age and Exposure Pathway on Copper and Cadmium Mixture Toxicity: A Study on Daphnia magna

Environmental Toxicology, EarlyView.
ABSTRACT Metal contamination in aquatic ecosystems poses substantial risks to freshwater organisms, with mixture effects often deviating from predictions based on single‐metal toxicity. Understanding how age‐specific sensitivities and multiple exposure pathways influence mixture effects is critical for accurate risk assessment.
Sanah Majid, Karen Smeets, Mubiana K. Valentine, Ronny Blust   +3 more
wiley   +1 more source

Aberrant light sensing and motility in the green alga Chlamydomonas priscuii from the ice-covered Antarctic Lake Bonney

Plant Signaling & Behavior, 2023
The Antarctic green alga Chlamydomonas priscuii is an obligate psychrophile and an emerging model for photosynthetic adaptation to extreme conditions.
Mackenzie Poirier, Pomona Osmers, Kieran Wilkins, Rachael M. Morgan-Kiss, Marina Cvetkovska   +4 more
doaj   +1 more source

Structural insights into θ‐type carbonic anhydrases 3 and 4: Tuning the directionality of CO2 hydration in a diatom

The FEBS Journal, EarlyView.
θ‐CA3 from a marine diatom has an N‐terminal transmembrane helix and two homologous catalytic domains. The enzyme functions as a dimer, with active sites formed near the dimer interface. A bicarbonate ion binds on the symmetry axis of the dimer and forms hydrogen bonds with both monomers, thereby activating θ‐CA3 and tuning CO2 hydration activity ...
Hiroto Negoro, Atsuki Ohsawa, Ginga Shimakawa, Hideaki Tanaka, Yusuke Matsuda, Genji Kurisu   +5 more
wiley   +1 more source

When Unity Is Strength: The Strategies Used by Chlamydomonas to Survive Environmental Stresses

Cells, 2019
The unicellular green alga Chlamydomonas reinhardtii is a valuable model system to study a wide spectrum of scientific fields, including responses to environmental conditions.
Félix de Carpentier, Stéphane D. Lemaire, Antoine Danon   +2 more
doaj   +1 more source

C‐type cyclin CycC1;1 delays leaf senescence by interacting with and inhibiting MYC2 in Arabidopsis

Journal of Integrative Plant Biology, EarlyView.
The C‐type cyclin CycC1;1 interacts with MYC2 and MED25 to block their association and RNA polymerase II recruitment, thereby repressing senescence‐associated gene expression and delaying leaf senescence in Arabidopsis. Unlike jasmonic acid‐inducible JAZ repressors, CycC1;1 operates independently of jasmonic acid signaling, representing an ...
Cai‐Yi Liao, Xiao‐Li Huang, Lin Li, Guo‐Mao Liu, Kai‐Kai Lu, Hong Yang, Song‐Qi Li, Peng‐Wei Jing, Ru‐Feng Song, Wen‐Cheng Liu   +9 more
wiley   +1 more source

Crawling under the radar: Two novel Paulinella species expand knowledge about the ecology and evolution of a primary plastid‐containing amoeba lineage

Journal of Phycology, EarlyView.
Abstract The genus Paulinella represents a rare, independent case of primary endosymbiosis, providing a unique system to study the early stages of organelle evolution. Here, we expand current understanding of primary plastid endosymbiosis through the discovery and characterization of two novel photosynthetic amoebae, Paulinella marae sp. nov.
Julia Van Etten, Sungpil Han, John A. Burns, Duckhyun Lhee, Andrew C. Willoughby, Timothy G. Stephens, Erin Chille, Robin S. Sleith, Debashish Bhattacharya, Hwan Su Yoon   +9 more
wiley   +1 more source