http://www.sciencedaily.com/news/plants_animals/ Plants and animals. Read current science news in biology, botany and zoology. Find everything from research on genetics and stem cells to the most recent stories on animal care, with images. en-us Mon, 23 Nov 2009 11:05:01 EST Mon, 23 Nov 2009 11:05:01 EST 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/plants_animals/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2009/11/091120094743.htm Bacteria possess an ingenious mechanism for preventing oxygen from harming the building blocks of the cell, according to new research. Mon, 23 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120094743.htm http://www.sciencedaily.com/releases/2009/11/091122161736.htm Understanding mixing in the ocean is of fundamental importance to modeling climate change or predicting the effects of an El Niño on our weather. Modern ocean models primarily incorporate the effects of winds and tides. However, they do not generally take into account the mixing generated by swimming animals. Mon, 23 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122161736.htm http://www.sciencedaily.com/releases/2009/11/091122161740.htm Scientists have inventoried an astonishing abundance, diversity and distribution of deep sea species that have never known sunlight -- creatures that somehow manage a living in a frigid black world down to 5000 meters (three miles) below the ocean waves. Mon, 23 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122161740.htm http://www.sciencedaily.com/releases/2009/11/091116103838.htm Is the indefinite self-renewal of adult cells possible without recourse to stem cell intermediates? Scientists have shown that it is possible, by achieving the ex vivo regeneration of macrophages, specialized cells in the immune system, over several months. Mon, 23 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116103838.htm http://www.sciencedaily.com/releases/2009/11/091117161127.htm A new study finds that a species of sea star stays cool using a strategy never before seen in the animal kingdom. The sea stars soak up cold sea water into their bodies during high tide as buffer against potentially damaging temperatures brought about by direct sunlight at low tide. Mon, 23 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091117161127.htm http://www.sciencedaily.com/releases/2009/11/091122161742.htm On the skin's surface, bacteria are abundant, diverse and constant, but inflammation is undesirable. New research now shows that the normal bacteria living on the skin surface trigger a pathway that prevents excessive inflammation after injury. Mon, 23 Nov 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122161742.htm http://www.sciencedaily.com/releases/2009/11/091106102954.htm In foods, soil samples or customs checks, plant fragments sometimes need to be quickly identified. The use of DNA "barcodes" to itemize plant biodiversity was proposed during the 1992 Rio de Janeiro Summit. Researchers have now tested this method in the tropical forest. Mon, 23 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091106102954.htm http://www.sciencedaily.com/releases/2009/11/091120084617.htm With the introduction of a single bacterial gene into yeast, researchers have achieved three improvements in bioethanol production from agricultural waste material: 'More ethanol, less acetate and elimination of the major by-product glycerol' Mon, 23 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120084617.htm http://www.sciencedaily.com/releases/2009/11/091118143217.htm Researchers set out to address a question that has been challenging scientists for years: How does dietary restriction produce protective effects against aging and disease? And the reverse: how does overconsumption accelerate age-related disease? An answer lies in a worm study that examines how the two ends of the spectrum influence biochemical responses. Mon, 23 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091118143217.htm http://www.sciencedaily.com/releases/2009/11/091119193933.htm A team of scientists has taken a large step toward unraveling how regulatory proteins control the production of gene products during development and growth. They focused specifically on the complex process of producing red blood cells (erythrocytes). These cells contain large amounts of hemoglobin, a molecule essential for transporting oxygen throughout the body. The research results could help in the development of important new therapies to combat sickle-cell disease. Mon, 23 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119193933.htm http://www.sciencedaily.com/releases/2009/11/091120000801.htm A newly designed straw house -- built of pre-fabricated straw-bale and hemp panels -- has fire resistance as good as houses built of conventional building materials, according to researchers in the UK. Mon, 23 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120000801.htm http://www.sciencedaily.com/releases/2009/11/091120000553.htm In winemaking, grape juice is turned to wine during the fermentation process by the action of a number of essential beneficial microorganisms -- namely, bacteria. Sometimes, though, harmful bacteria also populate the fermentation vat, spoiling the wine in the process. A researcher in Finland has developed new methods based on DNA identification for rapidly and accurately identifying detrimental lactic acid bacteria and acetic acid bacteria during the earliest stages of the wine fermentation process. Mon, 23 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120000553.htm http://www.sciencedaily.com/releases/2009/11/091120000437.htm Food production of modern human societies is mostly based on large-scale monoculture crops, but it now appears that advanced insect societies have the same practice. Our societies took just ten thousand years of (mainly cultural) evolution to adopt this habit and we are far from convinced that it is sustainable. Farming ants and termites had tens of millions of years to evolve their fungus farming systems and here monocultures are apparently evolutionary stable. Sun, 22 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120000437.htm http://www.sciencedaily.com/releases/2009/11/091119210836.htm A new treatment route for bovine spongiform encephalopathy (BSE) and its human form Creutzfeldt Jakob disease could be a step closer based on new results from scientists in the UK. The team has found that a protein called Glypican-1 plays a key role in the development of BSE. Sun, 22 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119210836.htm http://www.sciencedaily.com/releases/2009/11/091112095044.htm Scientists have discovered how certain bacteria such as Escherichia coli have evolved to capture rare sugars from their environment giving them an evolutionary advantage in naturally competitive environments like the human gut. Sun, 22 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091112095044.htm http://www.sciencedaily.com/releases/2009/11/091106145254.htm Plasmids, which are DNA molecules capable of independent replication in cells, have played an important role in gene technology. Researchers have now demonstrated that plasmid-based methods, which had been limited to single-cell organisms such as bacteria and yeasts, can be extended to mosses, opening the door to applications of a number of powerful techniques in plant research. Sun, 22 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091106145254.htm http://www.sciencedaily.com/releases/2009/11/091119212148.htm A new study suggests that tooth-binding micelles (or particles) may provide long-term cavity protection by adhering to tooth surfaces and gradually releasing encapsulated antimicrobials. Formulation of a mouthwash-based delivery system is anticipated, ultimately simplifying application and increasing at-home patient compliance. Sun, 22 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119212148.htm http://www.sciencedaily.com/releases/2009/11/091122161748.htm A butterfly's proboscis looks like a straw -- long, slender and used for sipping -- but it works more like a paper towel, according to researchers. They hope to borrow the tricks of this piece of insect anatomy to make small probes that can sample the fluid inside of cells. Sun, 22 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122161748.htm http://www.sciencedaily.com/releases/2009/11/091120111555.htm The estimated 4.6 million Americans involved in the equine industry may be at risk of developing respiratory symptoms due to poor air quality in horse barns, according to a questionnaire study. Sat, 21 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120111555.htm http://www.sciencedaily.com/releases/2009/11/091119085216.htm Bird flu viruses would have to make at least two simultaneous genetic mutations before they could be transmitted readily from human to human, according to new research. Sat, 21 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119085216.htm http://www.sciencedaily.com/releases/2009/11/091119141217.htm Since the discovery in 2007 that a component of human semen called SEVI boosts infectivity of the virus that causes AIDS, researchers have been trying to learn more about SEVI and how it works, in hopes of thwarting its infection-promoting activity. Sat, 21 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119141217.htm http://www.sciencedaily.com/releases/2009/11/091119193809.htm A mathematical model has explained some of the remarkable features of mosquito hearing. In particular, the male can hear the faintest beats of the female's wings and yet is not deafened by loud noises. Sat, 21 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119193809.htm http://www.sciencedaily.com/releases/2009/11/091119193636.htm In recent years, scientists have decoded the DNA of humans and a menagerie of creatures but none with genes as complex as a stalk of corn, the latest genome to be unraveled. A team of scientists has published the completed corn genome -- an accomplishment that will speed efforts to develop better crop varieties to meet the world's growing demands for food, livestock feed and fuel. Sat, 21 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119193636.htm http://www.sciencedaily.com/releases/2009/11/091119111413.htm Scientists have described for the first time how the telomeres and adjacent sequences of the oyster fungus are organized. Sat, 21 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119111413.htm http://www.sciencedaily.com/releases/2009/11/091116165741.htm Scientists have discovered that a dietary antioxidant found in such vegetables as broccoli and cauliflower protects cells from damage caused by chemicals generated during the body's inflammatory response to infection and injury. The finding has implications for such inflammation-based disorders as cystic fibrosis, diabetes, heart disease and neurodegeneration. Fri, 20 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116165741.htm http://www.sciencedaily.com/releases/2009/11/091117161004.htm Baked or boiled fish is associated with more benefit from heart-healthy omega-3 fatty acids than fried, salted or dried fish. Caucasian, Japanese-American and Latino men may be more likely to get the health benefits of fish than African-American or Hawaiian men, perhaps because of how their fish is prepared or genetic predisposition. Omega-3s from plant sources such as soy may do more to improve women's heart health than fish sources. Fri, 20 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091117161004.htm http://www.sciencedaily.com/releases/2009/11/091119135642.htm Most countries throughout the world participate in the $40-million-per-year culinary trade of frog legs in some way, with 75 percent of frog legs consumed in France, Belgium and the United States. Scientists have found that this trade is a potential carrier of pathogens deadly to amphibians. Fri, 20 Nov 2009 20:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119135642.htm http://www.sciencedaily.com/releases/2009/11/091119101048.htm Rodent, reptile and ant lion species behave differently on either side of the Israel-Jordan border. Researchers found that Israeli gerbils are more cautious than their Jordanian friends, and the funnel-digging ant lion population in Israel is unmistakably larger than in Jordan. Fri, 20 Nov 2009 20:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119101048.htm http://www.sciencedaily.com/releases/2009/11/091119212100.htm A new study suggests that naturally occurring bacteria on the skin of salamanders could help protect other amphibians, including some species of endangered frogs, from a lethal skin disease. Fri, 20 Nov 2009 20:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119212100.htm http://www.sciencedaily.com/releases/2009/11/091119101207.htm A nutritionist in Nigeria says that malnutrition and iron deficiency in schoolchildren could be reduced in her country by baking up snail pie. She explains snail is not only cheaper and more readily available than beef but contains more protein. Fri, 20 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119101207.htm http://www.sciencedaily.com/releases/2009/11/091119141029.htm Roughly 15,000 years ago, at the end of the last ice age, North America's vast assemblage of large animals -- including such iconic creatures as mammoths, mastodons, camels, horses, ground sloths and giant beavers -- began their precipitous slide to extinction. Fri, 20 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119141029.htm http://www.sciencedaily.com/releases/2009/11/091119135636.htm New DNA barcoding shows that nearly a third of the tuna plated in sushi restaurants was bluefin -- even if it was not labeled bluefin on the menu. Fri, 20 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119135636.htm http://www.sciencedaily.com/releases/2009/10/091029161526.htm Scientists have published the largest nematode phylogenetic tree up until now. It contains over 1,200 species and is entirely based on the analysis of DNA sequence data. Fri, 20 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/10/091029161526.htm http://www.sciencedaily.com/releases/2009/11/091118143255.htm Breakthrough research done earlier this year by a plant cell biologist has greatly accelerated scientists' knowledge on how plants and crops can survive difficult environmental conditions like drought. In drought conditions certain receptor proteins in plants perceive ABA, causing them to inhibit an enzyme called a phosphatase. The receptor protein is at the top of a signaling pathway in plants, functioning like a boss relaying orders to the team below that then executes particular decisions in the cell. Now recent published studies show how those orders are relayed at the molecular level. Fri, 20 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091118143255.htm http://www.sciencedaily.com/releases/2009/11/091119193936.htm Scientists have identified and grouped the genes thought to be responsible for cell wall development in maize, an effort that expands their ability to discover ways to produce the biomass best suited for biofuels production. Fri, 20 Nov 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119193936.htm http://www.sciencedaily.com/releases/2009/11/091119121300.htm Cigarettes are widely contaminated with bacteria, including some known to cause disease in people, concludes a new study conducted by an environmental health researcher and microbial ecologists. The research team describes the study as the first to show that "cigarettes themselves could be the direct source of exposure to a wide array of potentially pathogenic microbes among smokers and other people exposed to secondhand smoke." Fri, 20 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119121300.htm http://www.sciencedaily.com/releases/2009/11/091119193816.htm Sustainable farming, initially adopted to preserve soil quality for future generations, may also play a role in maintaining a healthy climate, according to researchers. Fri, 20 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119193816.htm http://www.sciencedaily.com/releases/2009/11/091119194128.htm Researchers have uncovered a strikingly pattern for ancient mass extinctions: extinctions rates during mass extinctions were significantly higher in open-ocean-facing settings than in epicontinental seas, indicating that open-ocean settings were more susceptible to the mass-extinction-causing agents. Fri, 20 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119194128.htm http://www.sciencedaily.com/releases/2009/11/091119194130.htm A massive survey of genetic diversity in maize has produced a gene map that should pave the way to significant improvements in a plant that is a major source of food, fuel, animal feed and fiber around the world. Fri, 20 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119194130.htm http://www.sciencedaily.com/releases/2009/11/091122095419.htm We've all read studies about the health benefits of having a life partner. The same thing is true at the molecular level, where amino acids known as cysteines are much more vulnerable to damage when single than when paired up with other cysteines. Fri, 20 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122095419.htm http://www.sciencedaily.com/releases/2009/11/091122095415.htm Scientists have shown how a family of genes (1-aminocyclopropane-1-carboxylate synthase, or ACS genes), in the weed Arabidopsis thaliana, are responsible for production of ethylene. This gas affects many aspects of plant development, and this information, which will be applicable to other plants, lays the foundation for future genetic manipulation that could make plants disease resistant, able to survive and thrive in difficult terrain, and increase yields. Fri, 20 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122095415.htm http://www.sciencedaily.com/releases/2009/11/091120135212.htm Scientists have found a clever way to use traditional GPS satellite signals to measure snow depth as well as soil and vegetation moisture, a technique expected to benefit meteorologists, water resource managers, climate modelers and farmers. Fri, 20 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120135212.htm http://www.sciencedaily.com/releases/2009/11/091120124829.htm A key question in the origin of biological molecules like RNA and DNA is how they first came together billions of years ago from simple precursors. Now, researchers have reconstructed one of the earliest evolutionary steps yet: generating long chains of RNA from individual subunits using nothing but warm water. Fri, 20 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120124829.htm http://www.sciencedaily.com/releases/2009/11/091120094745.htm Surplus biomass from the production of flax sheaves, and generated from Brassica carinata, a yellow-flowered plant related to those which engulf fields in spring, can be used to produce bioethanol. Fri, 20 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120094745.htm http://www.sciencedaily.com/releases/2009/11/091119141211.htm A four-year, multi-institutional effort co-led by three Cold Spring Harbor Laboratory scientists culminated today in publication of a landmark series of papers in the journal Science revealing in unprecedented detail the DNA sequence of maize. Maize, or corn, as it is commonly called by North American consumers, is one of the world's most important plants and the most valuable agricultural crop grown in the United States, representing $47 billion in annual value. Thu, 19 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119141211.htm http://www.sciencedaily.com/releases/2009/11/091116163210.htm A modified soybean oil increased the level of an omega-3 fatty acid in humans more than regular soybean oil. The modified oil may provide a plant-based alternative source of omega-3s. However, the oil's health effectiveness as a food ingredient remains to be proven. Thu, 19 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116163210.htm http://www.sciencedaily.com/releases/2009/11/091119111410.htm A protein found in the saliva of ticks helps protect mice from developing Lyme disease, researchers have discovered. The findings may spur development of a new vaccine against infection from Lyme disease, which is spread through tick bites. Thu, 19 Nov 2009 20:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119111410.htm http://www.sciencedaily.com/releases/2009/11/091119101209.htm Certain wild flax plants growing in poor soils have succeeded in balancing the stress in their lives -- these plants are less likely to experience infection from a fungal pathogen. The new study attempts to quantitatively explain how plants have evolved a specialization to serpentine soils and ultimately may help to explain floristic diversity in these unique environments. Thu, 19 Nov 2009 20:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119101209.htm