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Tag: "weed" at biology news

Biocontrol backfires again

... also from Europe. Canada thistle is an aggressive weed and may threaten large areas of range and crop land. The weevil damages thistles in two ways: the adults eat the leaves and the larvae eat -- and so destroy -- developing flowers and seeds. Since a 1990 study suggested that the weevil preferred Canad...

University of Southern Mississippi's 'safari' targets baby bluefin tuna

...tlantic and the Gulf. The sargassum mats and weed lines are potential habitat for the bluefin larvae. Through exploration using remotely operated vehicles, video, divers, and a variety of sampling gear in a related study supported by the Mississippi Department of Marine Resources, the team has alrea...

From nanotechnology to raspberries, Virginia Tech inventions and creations can improve our lives

...iate professor of plant pathology, physiology, and weed science, and former graduate student Carla Hegeman received a patent for "Soybean Phytase and Nucleic Acid Encoding the Same" (No. 6,303,766). The problem is that non-ruminant animals such as poultry and swine are unable to efficiently absorb phytate...

Popular weed killer disrupts frogs' sexual development

The nation's top-selling weed killer, atrazine, disrupts the sexual development of frogs at concentrations 30 times lower than levels allowed by the Environmental Protection Agency (EPA), raising concerns about heavy use of the herbicide on corn, soybeans and other crops in the M...

Popular weed killer demasculinizes frogs, disrupts their sexual development

Berkeley - The nation's top-selling weed killer, atrazine, disrupts the sexual development of frogs at concentrations 30 times lower than levels allowed by the Environmental Protection Agency (EPA), raising concerns about heavy use of the herbicide on corn, soybeans and other crops in the M...

Cost of inbreeding in Arabidopsis

... replacements in mustard weed with those in fruit flies - helps verify, at the ... replacement among species of the mustard weed Arabidopsis with those among species of the fruit fly Dros...

New protein plays espionage role in bacterial attack on plants

...nvestigation such as this. In addition, this small weed has homologues or counterparts of many important human proteins involved in disease, including cystic fibrosis and breast cancer. The Carolina researchers focused on the Arabidopsis disease resistance protein, RPM1, which they previously showed was a...

Virginia Tech researchers join NSF Arabidopsis 2010 Project; may help produce plants that defend themselves without pesticides

...elatively small set of genes that dictate when the weed will bud, bloom, sleep, or seed, the NSF said. Also, those genes have counterparts in crop plants with much larger genomes. The Virginia Tech researchers will be looking at a sequence of 125 million nucleotides, or building blocks that make up a gen...

University of Cincinnati geologist finds survival benefit to evolving after mass extinctions

...nalysis with a number of statistical techniques to weed out artifacts in the data set. "I was trying and trying to kill the pattern, but it wouldn't go away." One enigma in the analysis is that the pattern does not extend back into the Paleozoic, the earliest of the three eras that comprise the Phanerozo...

New small gene class found by Dartmouth geneticists may exert far reaching influence on cell behavior

... complex. With lots of data we have to be able to weed out whats garbage and whats real so computer tools and bioinformatics expertise are essential."...

Genes passed from crops to weeds persist for generations

...become a permanent part of the weed population, in turn posing pos...raits will make their way into weed populations," Snow said. "The result may be very hardy, ...

Rat genes increase Vitamin C in plants

... Nessler, head of plant physiology, pathology, and weed science at Virginia Tech, has found that by transferring certain rat genes into lettuce, he can turn on the plants latent Vitamin-C-producing pathway. In laboratory experiments using that process, he increased the level of Vitamin C in lettuce by 700...

Nile crocodiles threatened by alien weed

...shrub. The alien plant, known as locally as trifid weed (Chromolaena odorata), has invaded critical shorel...tuarine system in Africa. The fibrous roots of the weed cause some nesting crocodiles to abandon their nest sites, while shade from the plant alters the tem...

New U. of Colorado research may reduce renewable fuel costs

...acterial gene that codes for cellulase into a tiny weed species in the mustard family known as Arabidopsis thallana. Raised in closed chambers set at temperatures of roughly 77 degrees Fahrenheit for optimal growth, the plants manufacture significantly large quantities of the cellulase enzyme, which then...

Rockefeller researchers identify defense system in plants

...heckpoint, so that, for example in the case of the weed Arabidopsis, the plant has an opportunity to hold-...author of the paper. Arabidopsis, a well-studied weed in the mustard family, is a model system for the study of plant development because of a number of f...

Weeds in disturbed areas may be source of more medically important compounds than plants in tropical rainforests

...nal flora studied, there should have been about 13 weed species present. Instead, there were an astonishing 35. An analysis, done by Daniel Moerman, of medicinal plants used by Native North Americans reveals an equally striking use of weeds as medicinal plants. While 9.6 percent of the plants in North...

Gene-trapping method powers discovery of new brain-wiring signals

...ly identify cells ofinterest by applying a drug to weed out those that did not take up thedrug-resistance gene and then use the blue color to distinguish them further. Skarnes’smethod refined this standard “gene-trap vector” to include a genesegment that would only activate the blu...

First-ever complete plant genome sequence is announced

...ow researchers sequenced the entire genome of this weed in the mustard family. Because it is a model for ...elatively small set of genes that dictate when the weed will bud, bloom, sleep or seed. Those functional genes have their counterparts in plants with much ...

Helping medical researchers classify genes

...dustrial engineering. "What this work does is help weed out the so-called 'irrelevant' genes and identify the ones that have a legitimate impact. When you're able to put these genes into meaningful families, you can then find ways to manipulate their process in cells, leading to new areas of research and ...

Gene barrier in corn may boost trade, environment

...r thousands of years, teosinte has co-existed as a weed with the maize cultivated in Mexican fields. Like corn, teosinte is a grass and its genetic makeup is so similar to that of cultivated maize that scientists suspect the genetic differences between the two plants may be confined to a mere handful of g...

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(Date:11/25/2009)...were treated with cisplatin-based chemotherapy had...side effects and Raynaud-like phenomena, than men ...to a new study published online November 25 in the...arianne Brydy, M.D., of the Department of Oncology..., and colleagues conducted a cross-sectional study...
(Date:11/25/2009)...hritis, could help newly diagnosed diabetics, stud...y News) -- A drug commonly used to treat non-Hodgk...ows some promise in helping patients newly diagnos...(Rituxan), helped patients keep producing some of ...troyed some of their pancreatic beta cells, which ...
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