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Science News Archive June 2014 - Page 17


Page 17 of 33

How does a tree know it's time to grow again?

Researchers from Michigan Technological University have discovered a gene, 'Early Bud-Break 1,' that enables trees to start growing again after winter. The EBB1 gene helps awaken plant cells responsible for growth, allowing trees to grow at the right time, avoiding damage from late spring frosts and climate extremes.

SourceMichigan Technological University·JournalProceedings of the National Academy of Sciences·DateJun 16, 2014

How sperm get into the zona

Researchers have uncovered a key biological interaction that occurs during fertilization, identifying the protein in the zona pellucida that sperm latch onto. The study found that ZP2 is essential for sperm binding, and its absence leads to sterility in female mice.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateJun 16, 2014

When genes play games

A team of computer theorists and evolutionary biologists identified an algorithm to describe the strategy used by genes during sexual recombination, addressing a long-standing paradox in evolution. The multiplicative weight update algorithm helps explain how natural selection and diversity interact.

SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·DateJun 16, 2014

Does the moon affect our sleep?

Despite popular beliefs, a recent Max Planck Institute study of 1,265 volunteers found no correlation between human sleep and lunar phases. The researchers discovered conflicting results may be due to publication bias, which can lead to omitted negative findings.

SourceMax-Planck-Gesellschaft·JournalCurrent Biology·DateJun 16, 2014

First Canadian Bell palsy guideline

The first Canadian guideline for managing and treating Bell palsy has been published, emphasizing the use of corticosteroids to reduce involuntary facial spasms. The guideline also recommends a combined approach with antivirals for patients with severe paralysis, while cautioning against unnecessary antiviral treatment alone.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateJun 16, 2014

Many bodies prompt stem cells to change

Researchers use mathematical tool to analyze gene networks and determine transition pathways between steady states, providing insight into how stem cells differentiate. The study builds on previous theories, incorporating the role of protein binding to DNA in gene expression.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJun 16, 2014

Getting rid of old mitochondria

Researchers discovered that damaged mitochondria in retinal ganglion cells are transferred to adjacent astrocytes, which then degrade them. This process, dubbed transmitophagy, has significant implications for understanding and treating neurodegenerative disorders.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateJun 16, 2014

Pathological gambling runs in families

A study by University of Iowa researchers found that pathological gambling runs in families, with first-degree relatives eight times more likely to develop the problem. The study also identified connections between pathological gambling and other psychiatric disorders, such as social anxiety disorder and PTSD.

SourceUniversity of Iowa Health Care·JournalJournal of Clinical Psychiatry·DateJun 16, 2014

Your genes affect your betting behavior

Researchers found that genetic variants in dopamine-regulating genes influence strategic thinking, with three genes linked to belief learning and two genes linked to trial-and-error reinforcement learning. The study's findings have implications for understanding diseases like schizophrenia and social interaction disorders.

SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·DateJun 16, 2014

Discovery of a bud-break gene could lead to trees adapted for a changing climate

Scientists have identified a master regulator in poplar trees that controls the timing of bud break, which could lead to breeding plants better adapted for warmer climates. The discovery enables the engineering of adaptability into trees, potentially improving their ability to cope with changing environmental conditions.

SourceOregon State University·JournalProceedings of the National Academy of Sciences·DateJun 16, 2014

Regenerating our kidneys

Researchers at Tel Aviv University and Stanford University discovered the multi-layered nature of kidney growth using a rainbow mouse model. The WNT signal was found to be responsible for renal cellular growth, allowing for potential therapeutic applications in human kidney regeneration.