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Tag: "roots" at biology news

The secret to longevity in tubeworms

...es et al. to propose that L. luymesi also uses its roots to release sulfate back to the microbial consortia...sed return of sulfate to the sediments through the roots is only a hypothesis--albeit one with much to support it--that still awaits direct confirmation. By ...

Poplar trees redirect resources in response to simulated attack

...radiolabeled sugar and delivered more of it to the roots than plants untreated with the hormone. "This is p...ck, it partitions more of its carbohydrates to the roots for storage. ...

World's largest rainforest drying experiment completes first phase

...se? Have the vessels that conduct water from their roots to their leaves become clogged with water vapor bubbles, restricting their growth for years to come? These are just some of the questions that will be explored during the final two years of this experiment. Collaborating organizations in this effort...

World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics

...in Japan, and living donation has very established roots in liver and kidney transplantation there. "Living donor islet transplants could allow many more desperate patients with type 1 diabetes to get successful islet transplants," says Dr. Shapiro. "The donor operation is relatively safe, but is not enti...

To control germs, scientists deploy tiny agents provocateurs

...d beneficial. In one role, biofilms can coat plant roots and symbiotically aid ecological processes such as nitrogen fixation. But at the darker end of the scale, biofilms can form infection-inducing layers on implanted medical devices and cause deadly lung infections in cystic fibrosis patients. Biofilms ...

At long last, scientists figure out how plants grow

...ses. For example, they are the hormones that cause roots to grow downward and flowers to track the moving sun. Auxins also stop the growth of lateral branches. Since auxins are produced in shoot tips, lopping off the tip can cause numerous side shoots to appear, giving a plant a denser, more sculpted look....

Roots Engage in Underground Chemical Warfare

...ng physical support and taking in nutrients, plant roots secrete a wide variety of compounds that affect ot...the journal Nature. The exudates from Arabidopsis roots kill a wide range of bacteria, confirming that roots are not always vulnerable, anchored targets. Th...

Genome study of beneficial microbe may help boost plant health

...Pseudomonas fluorescens Pf-5, naturally safeguards roots and seeds from infection by harmful microbes that cause plant diseases. The genome paper will be published in Nature Biotechnology and was scheduled to be posted online on June 26. "The genome sequence has helped us identify new chemical pathways th...

Scientists find microRNAs regulate plant development

...d that the ago1 mutant failed to form adventitious roots - a type of root that develops from aerial parts o...rmal Arabidopsis plants form multiple adventitious roots on the hypocotyl (stem just above the root) when treated with auxin but the ago1 mutants do not. Dr....

Woods Hole Research Center plans controlled burn in Amazon rainforest

...ermanently cutting off the flow of sap between the roots and the leaves. While most trees in this ecosystem...ee how those trees that have resprouted from their roots will fare in this second fire, as their profusions of dense, green, living branches are very close t...

Plant pathologists evaluate eco-friendly alternatives to methyl bromide

...h are beneficial soil bacteria that colonize plant roots and protect against disease. "An integrated approach that utilizes biologically-based pest management tactics, such as PGPRs, soil solarization, and biological control agents combined with crop rotations and cover crops will be a necessity in the fu...

The roots of civilization trace back to ... roots

...presence of fleshy underground storage organs like roots and tubers must have sustained our ancestors who l...the Journal of Human Evolution. "You can think of roots as a kind of 'conveyor belt' ... they were somewhat available in the forest, but abundant on the sav...

“Hitchhiking?Viruses as Cancer Drug Delivery System

...presence of fleshy underground storage organs like roots and tubers must have sustained our ancestors who l...the Journal of Human Evolution. "You can think of roots as a kind of 'conveyor belt' ... they were somewhat available in the forest, but abundant on the sav...

Plants discriminate between self and non self

...mine who is a competitor when competing with other roots for limited resources," says Dr. Omer Falik, postd...searcher in plant ecology. "There is no reason for roots to fight if they belong to the same plant." The question was, do plants recognize their own roots a...

Prozac for future Plants on Mars

...mine who is a competitor when competing with other roots for limited resources," says Dr. Omer Falik, postd...searcher in plant ecology. "There is no reason for roots to fight if they belong to the same plant." The question was, do plants recognize their own roots a...

Techniques available to detect soil that inhibits destructive soybean pest

...rt, hypodermic needle-like mouth to pierce soybean roots and suck out the nutrients. As the adult female ag...ptoms of soybean cyst nematode damage, so soil and roots must be tested to reveal or confirm the pests' presence. Infestation gradually causes progressively ...

Research team receives $7.5 million to study cassava

...to grow in drought conditions. Fully grown cassava roots can stay in the ground for up to two years and needs relatively little water to survive. The roots are a key source of carbohydrates for subsistence farmers in Africa . The researchers will work on ...

Plant genes identified that can form basis for crops better adapted to environmental conditions

...tly which genes are involved in the development of roots was still a mystery. Scientists from the Flanders ...nd further development. The formation of capillary roots is vital to the root system and determines how much water and minerals a plant can absorb. As early ...

Protein behind autumn color splendor identified

...amino acids are stored in the trunk, branches, and roots until next year, when they are used as building blocks for new leaves. Other proteins, so-called proteases, have the task of degrading these proteins, and there is extensive research under way in this field. For example, the 2004 Nobel Prize went to ...

Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see

...of this complex design might, one day, uncover the roots of such neurological diseases as schizophrenia. "We know already that schizophrenia is a problem with organization of inhibitory circuits of neurons, and now we are uncovering how these specialized nerve cells work together and with other neurons," ...

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