Results 11 to 20 of about 623 (121)

Pandoravirus Celtis Illustrates the Microevolution Processes at Work in the Giant Pandoraviridae Genomes [PDF]

Frontiers in Microbiology, 2019
With genomes of up to 2.7 Mb propagated in μm-long oblong particles and initially predicted to encode more than 2000 proteins, members of the Pandoraviridae family display the most extreme features of the known viral world.
Matthieu Legendre, Jean-Marie Alempic, Nadège Philippe, Audrey Lartigue, Sandra Jeudy, Olivier Poirot, Ngan Thi Ta, Sébastien Nin, Yohann Couté, Chantal Abergel, Jean-Michel Claverie   +10 more
doaj   +2 more sources

Evidence of a Cellulosic Layer in Pandoravirus massiliensis Tegument and the Mystery of the Genetic Support of Its Biosynthesis

Frontiers in Microbiology, 2019
Pandoraviruses are giant viruses of ameba with 1 μm-long virions. They have an ovoid morphology and are surrounded by a tegument-like structure lacking any capsid protein nor any gene encoding a capsid protein. In this work, we studied the ultrastructure
Djamal Brahim Belhaouari, Jean-Pierre Baudoin, Franck Gnankou, Fabrizio Di Pinto, Philippe Colson, Philippe Colson, Sarah Aherfi, Sarah Aherfi, Bernard La Scola, Bernard La Scola   +9 more
doaj   +2 more sources

New Brazilian giant viruses isolation from environmental samples using a panel of protozoa. [PDF]

Frontiers in Microbiology, 2015
The Megavirales are a newly described order capable of infecting different types of eukaryotic hosts. For the most part, the natural host is unknown.
Fábio Pio Dornas, Fábio Pio Dornas, Jacques Yaacoub Bou Khalil, Isabelle ePagnier, Didier eRaoult, Jonatas eAbrahao, Bernard eLa Scola   +6 more
doaj   +2 more sources

Unexpected invasion of miniature inverted-repeat transposable elements in viral genomes [PDF]

Mobile DNA, 2018
Background Transposable elements (TEs) are common and often present with high copy numbers in cellular genomes. Unlike in cellular organisms, TEs were previously thought to be either rare or absent in viruses.
Hua-Hao Zhang, Qiu-Zhong Zhou, Ping-Lan Wang, Xiao-Min Xiong, Andrea Luchetti, Didier Raoult, Anthony Levasseur, Sebastien Santini, Chantal Abergel, Matthieu Legendre, Jean-Michel Drezen, Catherine Béliveau, Michel Cusson, Shen-Hua Jiang, Hai-Ou Bao, Cheng Sun, Thomas E. Bureau, Peng-Fei Cheng, Min-Jin Han, Ze Zhang, Xiao-Gu Zhang, Fang-Yin Dai   +21 more
doaj   +2 more sources

Presence of CRISPR CAS-Like Sequences as a Proposed Mechanism for Horizontal Genetic Exchanges between Trichomonas vaginalis and Its Associated Virus: A Comparative Genomic Analysis with the First Report of a Putative CRISPR CAS Structures in Eukaryotic Cells. [PDF]

Biomed Res Int, 2023
Introduction. Trichomonas vaginalis genome is among the largest genome size and coding capacities. Combinations of gene duplications, transposon, repeated sequences, and lateral gene transfers (LGTs) have contributed to the unexpected large genomic size and diversity. This study is aimed at investigating genomic exchange and seeking for presence of the
Kenarkoohi A, Abdoli A, Rostamzad A, Rashnavadi M, Naserifar R, Abdi J, Shams M, Bozorgomid A, Saeb S, Al-Fahad D, Khezri K, Falahi S.   +11 more
europepmc   +2 more sources

Unveiling Common Bean (<i>Phaseolus vulgaris</i> L) RNA- and DNA-Based Virome in Western Kenya: Insights From Metatranscriptomic and Metagenomic Signatures. [PDF]

Adv Virol
Common bean (Phaseolus vulgaris L) is Kenya’s second most important agricultural product after maize, serving as a vital source of protein for many rural families in Western Kenya. However, viral diseases caused by RNA and DNA viruses greatly impair bean productivity, often leading to yield losses of up to 100%, thus contributing to food insecurity ...
Osogo AK, Muyekho F, Were H, Okoth P.
europepmc   +2 more sources

Gut Virome: What's the Role in Irritable Bowel Syndrome? [PDF]

Rev Med Virol
ABSTRACT The gut virome, an integral but still poorly understood component of the gut microbiota, is emerging as an important player in the pathophysiology of irritable bowel syndrome (IBS). Recent evidence suggests that alterations in virome diversity and phage–bacteria interactions contribute to gut dysbiosis, immune modulation and gut barrier ...
Rettura F, Lambiase C, Bottari A, Filippini F, Giacomelli L, Pistello M, Bellini M.   +6 more
europepmc   +2 more sources

Incomplete tricarboxylic acid cycle and proton gradient in Pandoravirus massiliensis: is it still a virus? [PDF]

, 2022
The discovery of Acanthamoeba polyphaga Mimivirus, the first isolated giant virus of amoeba, challenged the historical hallmarks defining a virus. Giant virion sizes are known to reach up to 2.3µm, making them visible by optical microscopy.
Levasseur, Anthony, David Lamb, Decloquement, Philippe, Abrahao, Jonatas, Brahim Belhaouari, Djamal, Aherfi, Sarah, Chabriere, Eric, Baudoin, Jean-Pierre, Colson, Philippe, La Scola, Bernard, Raoult, Didier, Pinault, Lucile, Lamb, David   +12 more
core   +1 more source

Pleistocene glacial and interglacial ecosystems inferred from ancient DNA analyses of permafrost sediments from Batagay megaslump, East Siberia

Environmental DNA, Volume 4, Issue 6, Page 1265-1283, November 2022., 2022
As the past is the key to the future, to understand community transformations and ecological interactions, we reconstructed ecosystem‐wide biotic composition (from viruses to megaherbivores) between glacials and interglacials from the Middle and Late Pleistocene at the Batagay megaslump, east Siberia.
Jérémy Courtin, Amedea Perfumo, Andrei A. Andreev, Thomas Opel, Kathleen R. Stoof‐Leichsenring, Mary E. Edwards, Julian B. Murton, Ulrike Herzschuh   +7 more
wiley   +1 more source

Whole‐plant microbiome profiling reveals a novel geminivirus associated with soybean stay‐green disease

Plant Biotechnology Journal, Volume 20, Issue 11, Page 2159-2173, November 2022., 2022
Summary Microbiota colonize every accessible plant tissue and play fundamental roles in plant growth and health. Soybean stay‐green syndrome (SGS), a condition that causes delayed leaf senescence (stay‐green), flat pods and abnormal seeds of soybean, has become the most serious disease of soybean in China.
Xiaolin Wang, Mingxing Wang, Like Wang, Huan Feng, Xin He, Shihao Chang, Dapeng Wang, Lei Wang, Jun Yang, Guoyong An, Xiaojie Wang, Lingrang Kong, Zhen Geng, Ertao Wang   +13 more
wiley   +1 more source