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Noticiario genética

            

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Headline (Posted) Abstract
Plants sacrifice 'daughters' to survive chilly weather (23 Jun 2017)
Plants adopt different strategies to survive the changing temperatures of their natural environments. This is most evident in temperate regions where forest trees shed their leaves to conserve energy during the cold season. In a new study, a team of plant biologists found that some plants may selectively kill part of their roots to survive under co [+]


Protein mingling under blue light (23 Jun 2017)
One of the current challenges in biology is to understand rapidly-changing phenomena. Interestingly, only a small fraction of them is due to proteins acting in isolation, the majority of biological events are regulated by proteins acting together in clusters. Researchers have developed a new tool, called "CRY2clust", to trigger protein cluster form [+]


How a single chemical bond balances cells between life and death (22 Jun 2017) With SLAC's X-ray laser and synchrotron, scientists measured exactly how much energy goes into keeping a crucial chemical bond from triggering a cell's death spiral.

A rising star: Researchers dissect the process by which blood vessels shrink, which could have important implications for human health (22 Jun 2017) It's a tiny marine invertebrate, no more than 3 millimeters in size. But closely related to humans, Botryllus schlosseri might hold the key to new treatments for cancer and a host of vascular diseases.

How bacterial organelles assemble (22 Jun 2017) Scientists are providing the clearest view yet of an intact bacterial microcompartment, revealing at atomic-level resolution the structure and assembly of the organelle's protein shell. This work could benefit research in bioenergy and pathogenesis, and it could lead to new methods of bioengineering bacteria for beneficial purposes.

UV-sensing protein in brain of marine annelid zooplankton (22 Jun 2017)
Larvae of a marine ragworm Platynereis dumerilii have been studied as a zooplankton model, and possess photoreceptor cells in the brain to regulate circadian swimming behavior. This study revealed that a photoreceptive protein in the brain photoreceptor cells is UV (ultra-violet) sensitive. Since avoidance of UV irradiation is a major cause of a la [+]


Cells in fish's spinal discs repair themselves (22 Jun 2017)
A unique repair mechanism has been discovered in the developing backbone of zebrafish that could give insight into why spinal discs of longer-lived organisms like humans degenerate with age. The repair mechanism protects fluid-filled cells of the notochord, the precursor of the spine, from mechanical stress. Notochord cells eventually form the gela [+]


How pythons regenerate their organs and other secrets of the snake genome (22 Jun 2017)
Snakes exhibit incredible evolutionary adaptations, including the ability to rapidly regenerate their organs and produce venom. Scientists studied these adaptations using genetic sequencing and advanced computing. Supercomputers helped the team identify a number of genes associated with organ growth in Burmese pythons, study secondary contact in re [+]


Reconstruction of ancient chromosomes offers insight into mammalian evolution (21 Jun 2017) Researchers have gone back in time, at least virtually, computationally recreating the chromosomes of the first eutherian mammal, the long-extinct, shrewlike ancestor of all placental mammals.

New mechanism for genome regulation discovered (21 Jun 2017)
The mechanisms that separate mixtures of oil and water may also help the organization of a part of our DNA called heterochromatin, according to a new study. Researchers found that liquid-liquid phase separation helps heterochromatin organize large parts of the genome into specific regions of the nucleus. The work addresses a long-standing question [+]


Active 24/7 and doing great: New clues to circadian clocks (21 Jun 2017) Circadian clocks control the day-night cycle of many living beings. But what do the pacemakers do in animals whose activities do not follow this pattern? Scientists have now looked into this question.

Clear view on stem cell development (21 Jun 2017) Today, tracking the development of individual cells and spotting the associated factors under the microscope is nothing unusual. However, impairments like shadows or changes in the background complicate the interpretation of data. Now, researchers have developed a software that corrects images to make hitherto hidden development steps visible.

Newly identified protection mechanism serves as first responder to cellular stress (21 Jun 2017) A new type of rapid-response defense mechanism has been discovered that helps protect cells from environmental stress while giving slower, well-known protection systems time to act.

The rise of giant viruses (21 Jun 2017) Giant viruses acquire genes piecemeal from others, researchers have found. The discovery has implications for bioenergy production and environmental cleanup.

Isolating anti-Alzheimer's compounds in plants (20 Jun 2017)
Scientists have developed a method to isolate and identify active compounds in plant medicines, which accurately accounts for drug behavior in the body. Using the technique, they have identified several active compounds from Drynaria Rhizome, a traditional plant medicine, which improve memory and reduce disease characteristics in a mouse model of A [+]


Selfish gene acts as both poison and antidote to eliminate competition (20 Jun 2017) An unprecedented genetic survival strategy has been identified that would be right at home in an Agatha Christie murder mystery novel.

Scientists demonstrate adaptation of animal vision in extreme environments (19 Jun 2017)
Animals can adapt their ability to see even with extreme changes in temperature, researchers have discovered. The researchers looked deeply into the eyes of catfish living in cold-water streams at altitudes of up to nearly 3 km in the Andes Mountains, and found the protein known as rhodopsin that enables vision in dim light also accelerates the spe [+]


How to stop the nasty lurking toxoplasmosis parasite? Target its 'stomach,' research suggests (19 Jun 2017) One in three people has a potentially nasty parasite hiding inside their body -- tucked away in tiny cysts that the immune system can't eliminate and antibiotics can't touch. But new research reveals clues about how to stop it: Interfere with its digestion during this stubborn dormant phase.

Unusual soybean coloration sheds a light on gene silencing (19 Jun 2017) Today's soybeans are typically golden yellow, with a tiny blackish mark where they attach to the pod. In a field of millions of beans, nearly all of them will have this look. Occasionally, however, a bean will turn up half-black, with a saddle pattern similar to a black-eyed pea. New research indicates why.

Grape-based compounds kill colon cancer stem cells in mice (19 Jun 2017) Compounds from grapes may kill colon cancer stem cells both in a petri dish and in mice, according to a team of researchers.

New approach to unlock the genetic potential of plant cell wall (16 Jun 2017) Researchers have unlocked the genetic secrets of plant cell walls, which could help improve the quality of plant-based foods, outlines a new report.

Southern California mountain lions' genetic connectivity dangerously low (15 Jun 2017) Mountain lions in the Santa Ana mountains have lowest genetic diversity ever reported for pumas besides the Florida panther. Of seven male pumas that crossed 1-15 in past 20 years, only one produced offspring, report researchers.

Mutations that allow bird flu strain to spread among humans identified (15 Jun 2017) Scientists have identified several genetic mutations that, should they arise, could potentially allow the avian influenza strain H7N9 to spread between humans.

Scientists reveal mechanism behind mosquito-borne-disease 'blocker' used to fight viruses (15 Jun 2017) A new study may explain how a bacterium called Wolbachia prevents mosquitoes from transmitting deadly diseases such as dengue fever, West Nile virus and Zika.

New antibiotic effective against drug-resistant bacteria (15 Jun 2017)
Scientists have discovered a new antibiotic effective against drug-resistant bacteria: pseudouridimycin. The new antibiotic is produced by a microbe found in a soil sample collected in Italy and was discovered by screening microbes from soil samples. The new antibiotic kills a broad spectrum of drug-sensitive and drug-resistant bacteria in a test t [+]


3-D images show how sperm binds to the egg surface (15 Jun 2017) Researchers have obtained the first 3-D snapshots of a sperm protein attached to a complementary egg coat protein at the beginning of fertilization. The study reveals a common egg protein architecture that is involved in the interaction with sperm in both mollusc and mammal.

Gut bacteria might one day help slow down aging process (15 Jun 2017) Slowing down the aging process might be possible one day with supplements derived from gut bacteria.

Video imaging of single molecule DNA replication (15 Jun 2017) Almost all life on Earth is based on DNA being copied, or replicated. Now for the first time, scientists have been able to watch the replication of a single DNA molecule, with some surprising findings. For one thing, there's a lot more randomness at work than has been thought.

Cryo-EM images reveal how key biological machine unfolds problem proteins (15 Jun 2017) Hand over hand. That's how new, near-atomic resolution, 3-D snapshots show that a key biological machine unfolds a ribbon of protein through its central channel.

Pre-clinical study suggests Parkinson's could start in gut endocrine cells (15 Jun 2017) A potential new mechanism has been identified in both mice and human endocrine cells that populate the small intestines. Inside these cells is a protein called alpha-synuclein, which is known to go awry and lead to damaging clumps in the brains of Parkinson's patients, as well as those with Alzheimer's disease.

Influenza virus can overcome potentially crippling mutations (15 Jun 2017) The effectiveness of flu vaccines and therapies could be improved thanks to new research, report scientists.

Plant compound more powerful than AZT against HIV (14 Jun 2017) A plant found throughout Southeast Asia traditionally used to treat arthritis and rheumatism contains a potent anti-HIV compound more powerful than the drug AZT, according to a new paper.

Elegant switch controls translation in transition from egg to embryo (14 Jun 2017)
The transition from an egg to a developing embryo is one of life’s most remarkable transformations. Now researchers have used fruit flies to decipher how one aspect — control of the translation of messenger RNAs (mRNAs) into proteins—shifts as the egg becomes an the embryo. This type of switch could tell scientists more about how human cells work a [+]


Antibiotic design strategy boosts odds against resistance development (14 Jun 2017) A new rational drug design technique that uses a powerful computer algorithm to identify molecules that target different receptor sites on key cellular proteins could provide a new weapon in the battle against antibiotic resistance, potentially tipping the odds against the bugs.

Using light to reach higher precision in cell mechanic research (14 Jun 2017) Scientists use optogenetics and mathematical modelling to identify a central molecule in cell mechanics

Anti-malaria drugs: Potential new target identified (14 Jun 2017)
A newly described protein could be an effective target for combatting drug-resistant malaria parasites. The protein regulates a number of genes involved with a critical part of the parasite's complex life cycle -- its invasion of a person's red blood cells. Now that the researchers know the protein's role in this invasion process, they have a compl [+]


Promising peas' potential in big sky country (14 Jun 2017) Changing over from all wheat to wheat-pea rotations can be uncertain. To help, researchers have been studying how pea genetics interact with the environment to affect crop yields, pea protein and starch content for market demands.

The glue that keeps cells together (14 Jun 2017) Studies shed new light on cell-cell contacts: Physical effects play an important role in their generation and stability.

E. coli bacteria's defense secret revealed (13 Jun 2017) By tagging a cell's proteins with fluorescent beacons, researchers have found out how E. coli bacteria defend themselves against antibiotics and other poisons. Probably not good news for the bacteria.

Birds of a feather (13 Jun 2017)
Biologists have always been fascinated by the diversity and changeability of life on Earth and have attempted to answer a fundamental question: How do new species originate? A new study provides the first large-scale test of the link between population differentiation rates and speciation rates. The results confirm the evolutionary importance of po [+]


 


  

Noticias sobre Genética | EL PAÍS

 

Genética cotidiana (Prof. José Luis Micol Molina) 

 
Selección de noticias sobre genética aparecida en medios de comunicación español, y se añade un breve comentario. Se incluye un enlace a la noticia en español y cuando es posible, otro al artículo científico original en inglés. (Prof. José Luis Micol Molina, Catedrático de Genética, Universidad Miguel Hernández)

 

Blog Genes, genomas y otras genialidades (Prof. Ana Aguirre) Universidad del País Vasco

Este blog surge del interés de la autora por la formación de los estudiantes de Grado y de posgrado del ámbito de las Biociencias. Está concebido como un complemento formativo e informativo para estudiantes universitarios y para cualquier persona interesada por conocer de cerca los avances que suceden en el campo de la Genética, de la Biología Molecular y de otras áreas afines. 

 


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Curso de Genética - Grado Genética de la UAB
Plataforma Web 2.0 para la docencia universitaria
Prof. Antonio Barbadilla

 

 

 

 

Biological Sciences - Genetics: 394 journals. http://journalseek.net/cgi-bin/journalseek/journalsearch.cgi?field=category&query=bio.genet

Linked Journals (345)

 

   Non-Linked Journals (49)


Ideas-flash de los estudiantes del curso

“En referencia al código genético del ADN: es tan eficaz que toda la información que se precisa para dar las especificaciones del diseño de todas las especies de organismos que han existido en el planeta podría colocarse en una cucharilla y aún sobraría espacio para incluir los datos de todos los libros que se han escrito.”
Michael Denton
Contribuido por Laura RODRÍGUEZ VARELA y Nerea CARRON RODAS

"There's no gene for fate."
-Vicent, GATTACA (1997)
Contributed by Neus AMAT SORANDO

We're moving from reading the genetic code to writing it.
-Craig Venter
Contributed by Aleix CANALDA BALTRONS