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Tag: "order" at biology news

Research identifies protein that signals flowering in squash plants

...rt day length (or more precisely, a long night) in order to flower. These are plants that flower as the days grow shorter, such as in the fall in temperate regions. Long day (LD) plants will flower when nights are short (and days are long), and typically flower in late spring or early summer. SD crops incl...

Cells re-energize to come back from the brink of death

... increases the levels of an enzyme called GAPDH in order to counteract CICD. GAPDH appears to prevent CICD ...optosis. The researchers then blocked apoptosis in order to study CICD. “The GAPDH response appears to represent a basic, reproducible event. But in order to...

Simulations unravel outer membrane transport mechanism

...d, how does the luminal domain respond to force in order to expose a permeation pathway through the barrel"... 4,000 picoNewtons,” Tajkhorshid said. “This is an order of magnitude higher than that required to induce the unfolding. This clearly indicates that the unpl...

Snoring in children might be an allergic type disease

...effectively spot snoring in pre-school children in order to identify potentially more serious obstructive sleep apnoea.” ...

The insect vector always bites twice

...te moves back into the vector’s salivary glands in order to be transmitted to the human host when the insect bites again to take another blood meal. Morbidity among infected people is therefore associated with the degree of exposure of the subject to insect vector bites. The vector saliva, which is ada...

A new plant-bacterial symbiotic mechanism promising for crop applications

...al strains of Bradyrhizobium, ORS278 and BTAi1, in order to find out their genetic make-up and identify the genes involved in this rather special form of symbiosis. These bacteria were found to have no nod genes, usually essential for nodulation. Bradyrhizobium consequently appeared to use mechanisms that ...

How to lose weight and not go hungry: HU researcher develops drug that mimics feeling of 'fullness'

...vercome obesity could take this compound orally in order to curb his appetite, thus leading to natural weight loss. In experiments with mice, it was shown that a single oral administration of BL-3020 led to reduced consumption over a period of 24 hours. Over a 12-day period of daily dosages, the mice weigh...

Envisat captures first image of Sargassum from space

...s at wavelengths of 665, 681 and 709 nanometres in order to measure the fluorescence emission from chlorophyll a. Chlorophyll is the green photosynthetic compound in plants that captures energy from sunlight necessary for photosynthesis. The amount of chlorophyll present in vegetation plays an importan...

Sun exposure early in life linked to specific skin cancer gene mutation

...endations to protect children from sun exposure in order to prevent melanoma, Thomas said. The study, published in the May 2007 edition of the journal Cancer Epidemiology Biomarkers and Prevention, presents some of the first data to link early life sunlight exposure to a specific mutation in melanomas....

Migration alert -- How tumor cells home in on the lymphatic system

...cal strategy to exploit this slow, one-way flow in order to migrate to functional lymphatic vessels. As part of their intercellular drainage job, lymphatic tissues secrete small quantities of a signaling molecule. Cells migrate towards high concentrations of this molecule, so if they are close enough ...

Nurtured chimps rake it in

...iments looked at how the chimpanzees used rakes in order to retrieve a fruit yoghurt reward. The overall study examined not only whether the chimpanzees understood the properties of the tool, but also whether they understood the reasons why the tool worked. The researchers gave the animals access to sm...

Runners -- Let thirst be your guide

...mine how much water they actually need to drink in order to replace just the body fluids lost during exerci...tary gland when a person is becoming dehydrated in order to force the kidneys to conserve water. At rest, a person’s AVP level is low and can be suppressed t...

The kapok connection -- Study explains rainforest similarities

...ironmental Biology, which funded the research. "In order to plan for and mitigate global climate change, we need to understand the history of life on Earth through studies like this one." Oceanic dispersal links the world's rainforests, said Dick, "and this study is one of the first to catch that proces...

Mutating the entire genome

...se the whole mouse genome has been sequenced – the order and location of base pairs determined in detail – scientists can identify locations in individual mice where the jumping genes have carried pieces of loxP DNA. Then, they can select a mouse with loxP on both sides of the large piece of DNA they want ...

Weizmann Institute scientists develop a general 'control switch' for protein activity

... create much larger sets of engineered proteins in order to find one that best meets their needs.” The method developed by the Weizmann Institute scientists is ready for immediate use, both in basic biomedical research and in the pharmaceutical industry, in the search for proteins that can serve as targ...

Human genetic 'deserts' are teeming with significant life

...enes are added or deleted from a model organism in order to study the effect of therapies, he says. “It appears that the same nucleotide [the structural unit of DNA and RNA] on the genome can carry out a number of different, sometimes simultaneous, functions.” Professor Reymond’s team, in collaboratio...

Surprising origin of cell's internal highways

...olding that the cell uses to move things around in order to hold its shape and divide, originated from a ti...s, which then assemble into long, hollow tubes. In order to gain a foothold, nascent microtubule "seeds" must be anchored at a structure near the cell's nucl...

AAAS decries latest stem cell veto

...hancement Act. The new approaches addressed by the order are still in the early stages of development and a...hancement Act. The new approaches addressed by the order are still in the early stages of development and appear to already be eligible for NIH funding. AAAS...

St. Jude study shows genes play an unexpected role in their own activation

...ls from CREB’s toolbox it will respond to.” In order to activate a gene, CREB must first get “tagged” by a molecule called phosphate. CREB then recruits a co-factor called CBP/p300 to the gene by binding to this protein at a site called KIX. Previously, scientists thought that a particular transcriptio...

Treating HIV in war zones -- Public health emergencies need rapid advice from WHO

...pidly issued guideline was developed by the WHO in order to advise countries that were dealing with avian influenza A (H5N1) infection. Typically, the most rigorous clinical practice guidelines take two years or more to develop. The laborious process involves convening experts who search for and appra...

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