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Broad receptor engagement of an emerging global coronavirus ...

Broad receptor engagement of an emerging global coronavirus may potentiate its diverse cross-species transmissibility Proc Natl Acad Sci U S A . 2018 May 29;115(22):E5135-E5143. doi: 10.1073/pnas.1802879115.

Restriction modification systems as engines of diversity

Restriction modification (RM) systems provide protection against a broad spectrum of phages. However, the likelihood of a phage permanently bypassing this can be as high as 0.1 per infection (Korona et al., 1993) which makes for a relatively weak defense.

History of coronavirus - Wikipedia

See full list on en.wikipedia.org See full list on en.wikipedia.org See full list on en.wikipedia.org See full list on en.wikipedia.org See full list on en.wikipedia.org See full list on en.wikipedia.org See full list on en.wikipedia.org See full list on en.wikipedia.org

OryzaGenome2.1: Database of Diverse Genotypes in Wild Oryza ...

OryzaGenome2.1 focuses on comparative genomic analysis of diverse wild Oryza accessions collected around the world and on the development of resources to speed up the identification of critical trait-related genes, especially from O. rufipogon. It aims to promote the use of genotype information from …

Princeton scientists explain how diverse species coexist in ...

Diversity in many biological communities is a sign of an ecosystem in balance. When one species dominates, the entire system can go haywire. For example, the uncontrolled overgrowth of certain oceanic algae species causes toxic red tides that kill fish and other sea life, and sicken humans.

Fritillaria imperialis - Wikipedia

Fritillaria imperialis, the crown imperial, imperial fritillary or Kaiser's crown, is a species of flowering plant in the lily family Liliaceae, native to a wide stretch from the Anatolian plateau of Turkey, Iraq and Iran (i.e. Kurdistan) to Afghanistan, Pakistan, Northern India and the Himalayan foothills.

Wildlife Diversity - Kentucky Department of Fish & Wildlife

The Wildlife Diversity Program works with wildlife species through research, management, and education. We strive to enhance wildlife diversity, and promote sustainable use of those resources including protection of threatened and endangered species, species of greatest conservation need within Kentucky’s Wildlife Action Plan, their habitats and protection of sensitive areas.

Species diversity - Wikipedia

Species diversity is the number of different species that are represented in a given community (a dataset). The effective number of species refers to the number of equally abundant species needed to obtain the same mean proportional species abundance as that observed in the dataset of interest (where all species may not be equally abundant).

Global biodiversity - Wikipedia

Chapman, 2005 and 2009 has attempted to compile perhaps the most comprehensive recent statistics on numbers of extant species, drawing on a range of published and unpublished sources, and has come up with a figure of approximately 1.9 million estimated described taxa, as against possibly a total of between 11 and 12 million anticipated species overall (described plus undescribed), though other ...

Coronavirus Pathogenesis and the Emerging Pathogen Severe ...

Thus, it is likely that amino acids 479 and 487 are important for receptor interaction and hence species specificity and that selection of viruses with substitutions of these residues allowed the adaptation of SARS-CoV to humans (188, 256). For MHV, most of the H-2 b-restricted T-cell epitopes thus far identified are encoded in the spike gene.

Coronaviruses: emerging and re-emerging pathogens in humans ...

It is now known that bats are important reservoirs of diverse alphacoronaviruses and lineage B, C and D betacoronaviruses . While horseshoe bats in China are the natural reservoir of SARS-CoV-like viruses, the bat species that may harbor the ultimate origin of MERS-CoV is yet to be identified.

Diverse adaptability in oryzias species to high environmental ...

The genus Oryzias containing freshwater (FW) and seawater (SW) species is a potential model for studying mechanisms of osmotic adaptation. In this study, we compared SW adaptability of four Oryzias species, O. javanicus, O. dancena, O. latipes and O. mWPCatus inhabiting different osmotic environme …

Princeton scientists explain how diverse species coexist in ...

Diversity in many biological communities is a sign of an ecosystem in balance. When one species dominates, the entire system can go haywire. For example, the uncontrolled overgrowth of certain oceanic algae species causes toxic red tides that kill fish and other sea life, and sicken humans.

Diversity of Fish Species Support Killer Whale Diet ...

“When so many prey species are endangered, then they lose some of that diversity,” Hanson said. “The question for managers is how do you support and improve this diverse portfolio of species and stocks.” The analysis also revealed that the whales prey almost exclusively on Chinook salmon when they are available in the summer.

Hidden Diversity | The UCSB Current

“Like a galaxy, the type species of the genus is packed with a diversity of stars,” he wrote, referring to the shape of its spicules, microscopic objects that provide structural support to many sponges. The four species in the new paper appear to a layperson as nondescript beige patches on kelp forest rocks.

What is the most genetically diverse species? | Live Science

The split gill mushroom is the most genetically diverse species on record. (Image credit: Minh Hoang Cong/500px via Getty Images) Bacteria and viruses tend to have very high genetic diversity ...

New approach can add diversity to crop species without ...

New approach can add diversity to crop species without breeding GMOs. Researchers in Japan have designed a technique that can make point mutations to the DNA of plant chloroplasts without leaving ...

DNA sleuths read the coronavirus genome, tracing its origins ...

DNA sleuths read the coronavirus genome, tracing its origins and looking for dangerous mutations. Electron micrographs of isolated 2019-nCoV particles (left), and in cells from human airways ...

Coronavirus Pathogenesis and the Emerging Pathogen Severe ...

Thus, it is likely that amino acids 479 and 487 are important for receptor interaction and hence species specificity and that selection of viruses with substitutions of these residues allowed the adaptation of SARS-CoV to humans (188, 256). For MHV, most of the H-2 b-restricted T-cell epitopes thus far identified are encoded in the spike gene.

Coronavirus Variants: Latest News and Updates - The New York ...

A group of coronaviruses known as B.1.526 or Iota has been spreading rapidly in New York City. The variant appears in two forms: one with the E484K spike mutation, which may help the virus evade ...

Plant species diversity of buffer zones in agricultural ...

My results suggested some guidelines of species diversity conservation in the agricultural ecosystem. To maintain a high level of species diversity in the strips, a high level of phosphorus in strip soil should be avoided. Widening the strips is the most effective mean to improve species richness.

Species and genotype diversity drive community and ecosystem ...

Species diversity is important to ecosystems because of the increased probability of including species that are strong interactors and/or because multiple-species communities are more efficient at using resources due to synergisms and resource partitioning.

Diversity of fish - Wikipedia

Fish species diversity is roughly divided equally between marine (oceanic) and freshwater ecosystems. Coral reefs in the Indo-Pacific constitute the centre of diversity for marine fishes, whereas continental freshwater fishes are most diverse in large river basins of tropical rainforests , especially the Amazon , Congo , and Mekong basins.

The Diversity of the Tropics Helps Keep Invasive Species Low ...

The Diversity of the Tropics Helps Keep Invasive Species Low -- Menu-- We know that there are a lot more native species in the tropics than in polar and temperate regions; think of a rainforest in Brazil verses the Canadian tundra.

6: Species Diversity - Biology LibreTexts

6: Species Diversity. Strictly speaking, species diversity is the number of different species in a particular area (species richness) weighted by some measure of abundance such as number of individuals or biomass. However, it is common for conservation biologists to speak of species diversity even when they are actually referring to species ...

Diversity index - Wikipedia

A diversity index (also called phylogenetic index) is a quantitative measure that reflects how many different types (such as species) there are in a dataset (a community), and that can simultaneously take into account the phylogenetic relations among the individuals distributed among those types, such as richness, divergence or evenness.

Coronavirus: Everything you need to know | World| Breaking ...

Coronavirus: Timeline of the global spread of COVID-19 Pneumonia-like virus hits Wuhan. On December 31, 2019, China notifies the World Health Organization of a string of respiratory infections in ...

National Center for Biotechnology Information

National Center for Biotechnology Information

Coronavirus Variants: Latest News and Updates - The New York ...

A group of coronaviruses known as B.1.526 or Iota has been spreading rapidly in New York City. The variant appears in two forms: one with the E484K spike mutation, which may help the virus evade ...

Plant species diversity of buffer zones in agricultural ...

My results suggested some guidelines of species diversity conservation in the agricultural ecosystem. To maintain a high level of species diversity in the strips, a high level of phosphorus in strip soil should be avoided. Widening the strips is the most effective mean to improve species richness.

The Diversity of the Tropics Helps Keep Invasive Species Low ...

The Diversity of the Tropics Helps Keep Invasive Species Low -- Menu-- We know that there are a lot more native species in the tropics than in polar and temperate regions; think of a rainforest in Brazil verses the Canadian tundra.

Coronavirus Infections—More Than Just the Common Cold ...

Human coronaviruses (HCoVs) have long been considered inconsequential pathogens, causing the “common cold” in otherwise healthy people. However, in the 21st century, 2 highly pathogenic HCoVs—severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV)—emerged from animal reservoirs to cause global epidemics with alarming ...

Identifying longevity associated genes by integrating gene ...

Marek & Korona report a pro-longevity effect for COX9, contrary to the model prediction. (Except for COX9, the results of Marek & Korona are inconclusive for all of the genes in Table 1). Further investigation of URA3, COX9, TOM7, MFA1, and TAR1 might be interesting to pursue.

6: Species Diversity - Biology LibreTexts

6: Species Diversity. Strictly speaking, species diversity is the number of different species in a particular area (species richness) weighted by some measure of abundance such as number of individuals or biomass. However, it is common for conservation biologists to speak of species diversity even when they are actually referring to species ...

landgrant : USDA ARS

Congress appropriates the money, which is administered by the Office of Higher Education Programs in USDA's Cooperative State Research Service. In the first year of the program, which began October 1, 1989 (fiscal year 1990), Congress appropriated $5 million; 4 years later, for FY 1993, it was $10.25 million.

Plants - Center for Biological Diversity

The total number of described plant species hovers around 250,000. Our information on plant species numbers is far from perfect. The International Union for the Conservation of Nature's Red List estimates that about 54 percent of evaluated plant species (not nearly all the plants on Earth) are threatened: 10,584 out of 19,738.

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