Tag: "necessary" at biology news

Rice centromere, supposedly quiet genetic domain, surprises

...d replication. At a practical level, the work is a necessary step toward science's long-term goal of creating an artificial chromosome for plants, says Jiang. Such a tool, now available only for humans and yeast, would be an invaluable aid to scientific study and a precursor to precision plant engineering tech...

Researchers show evolutionary theory adds up

...lications. "We showed that the chemical production necessary to support Woese's theory is not dependable and not conducive to the formation of multicellular organisms, but Margulis's theory proves to be reliable," Antonelli said. Antonelli decided to test the two theories after reading an article on the subjec...

Gene essential for development of normal brain connections resulting from sensory input discovered

... Because of this, Ghosh suspects that CREST may be necessary for the storage of new memories and the ability to learn. His laboratory is currently developing mice in which CREST expression is normal throughout most of development, so the brain develops normally, but then shuts off in the hippocampus when the ...

New insight into control of parental gene expression in eggs

...eason that maternal and paternal contributions are necessary for normal mammalian development. Exploring the mechanisms underlying gene imprinting may provide insight into so-called epigenetic control of gene expression, in which the cellular machinery governs the expression of genes in the cell. The function ...

Salk news: Understanding organ placement

...rlier this year. "We knew that Notch activity was necessary for the normal, left-sided expression, but we were clueless as to what was activating Notch preferentially on the left side," said Angel Raya, lead author of the paper. "We examined several factors known to participate early in the establishment of t...

Araucariaceae of New-Caledonia: endemic species in danger

... Caledonia. The scientists consider that it is now necessary to protect better the endangered Araucariacaean species in order to conserve the biodiversity of this plant family. They recommend modification and reinforcement of the classification of some of these species relative to the IUCN 2000 Criteria....

Scientists discover way to streamline analysis of maize genome

... a four-fold reduction in the amount of sequencing necessary to find all of the maize genes. "A combination of these techniques may be an excellent method for sequencing maize as well as other large and complex plant genomes at a cost far lower than current approaches," says Cathy A.Whitelaw, the...

CSIRO scientist wins highest global award for fisheries research

...on the coasts and in the oceans. "This is what is necessary for truly sustainable development and continued enjoyment of our coasts and marine environment by future generations. And while we still have a great deal to learn about the oceans we already have good scientific tools to help identify management str...

'Panning for gold' in the maize genome

...ed, the methods could cut the amount of sequencing necessary to find all of the maize genes to about one-fourth of what it would take to sequence the entire genome. As both methods yielded short stretches of sequence, a major challenge was to reassemble these into complete genes. To do this, the Cold S...

Brain tumor growth requires abnormal neighbors

...explains. "If we figure out what external cues are necessary to trigger tumor growth, we could try to shut off that switch and stop tumors dead in their tracks without having to correct the underlying genetic defect." The potential for the mouse model used in this study to serve as a preclinical model of NF1 i...

Gene interactions control circadian clock in plants, study finds

...If a plant can anticipate sunrise, it can have the necessary photosynthetic compounds prepared in advance," said Somers. "Many of the enzymes and molecular components of photosynthesis have to be re-made daily, as harvesting sunlight and turning it into useful energy is a destructive process. "It's to a plant'...

Venom hunt finds 'harmless' snakes a potential danger

...agility. Venom rather than muscle became the tool necessary for these snakes to capture their prey," he says. The consequence of this is that venom is an inherent condition of virtually all advanced snakes, and that includes the assumed non-venomous species. Dr Fry has now analysed the venoms from the many di...

Kyoto and beyond

...nd supporting measures are needed to influence the necessary business investments. This is important also for the public, which must understand and support the policies. For the expanding populations of the developing world, which strive to achieve the same living standards as the industrial countries, long-te...

Emerging frontiers genomics grant for blue-green bacteria

... bacterium to make more nitrogen-fixing cells than necessary and to produce more fixed nitrogen, a process Meeks compares to domestication of cattle to produce milk. An ultimate goal of the research is to learn about the process so that crop plants could be engineered to domesticate Nostoc, Meeks said. Existi...

Researchers engineer mouse embryonic stem cells to form sperm cell precursors

...rts at the center, they conduct the basic research necessary for a complete understanding of stem cells," says Sohi Rastegar, the NSF program director who oversees the agency's support of BPEC and several other bioengineering centers. "To develop effective gene therapy for difficult diseases such as sickle cel...

Ebola virus-like particles prevent lethal Ebola virus infection

...ious viral particles but lack the genetic material necessary for reproduction. When the VLPs were injected i... cells and humoral immunity via B cells. Both are necessary for complete protection against the Ebola virus. Having shown that the VLPs evoked a robust immune...

On the tip

...e study, Liman and Liu looked closely at a protein necessary for detecting sweet, bitter and umami tastes. Without the protein, called TRPM5, mice can't discern between the flavors. Once activated, the protein appears to play a key role in the taste-signaling pathway, somehow sending a message to the brain...

Pittsburgh researchers engineer and successfully test SARS corona vaccine in animal model

...urgh and provides the infrastructure and resources necessary to rapidly translate gene therapy protocols from bench to bedside. SARS emerged as a threatening and deadly infectious disease last year in China. For Wentao Gao, M.D., Ph.D., research instructor in the department of surgery and co-author of the stud...

With optical 'tweezers,' researchers pinpoint the rhythmic rigidity of cell skeletons

... who specialize in the advanced imaging techniques necessary to measure the intracellular molecular signals. Di...ress the rearrangement of the cytoskeleton that is necessary for mitosis to occur, they might be able to obstruct the growth of cancerous tumors, which depends o...

USGS December science picks!

...sites," because most of them have the green leaves necessary for photosynthesis. Eventually, mistletoes grow into thick masses of branching, misshapen stems, giving rise to a popular name of witches' brooms, or the apt Navajo name of "basket on high." The plant's common name - mistletoe - is derived from early...

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