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VIDEO: Illustrates that differential cell permeability is the key to creating the exogenous-GA-generated gradient.
Technical detail: The time-course shows a root treated with nlsGPS1 growing in Rootchip18S with GA at standard (pH. view more
Credit: Sainsbury Lab, University of Cambridge and University of Nottingham
The research team that developed a biosensor that first recorded that a distinct gradient of the plant growth hormone gibberellin correlated with plant cell size has now revealed how this distribution pattern is created in roots.
Starting when a plant embryo forms within a seed and continuing throughout the plant lifecycle, undifferentiated stem cells undergo radical transformations into specialised root, stem, leaf and reproductive organ cells. This transformation relies on a suite of molecules called phytohormones that, much like human hormones, can move between cells and tissues and trigger distinct biological processes across the bodypla
Credit: Evgeny Chuvilin
Researchers from the Oil and Gas Research Institute of the Russian Academy of Sciences and their Skoltech colleagues have surveyed the newest known 30-meter deep gas blowout crater on the Yamal Peninsula, which formed in the summer of 2020. The paper was published in the journal
Geosciences.
Giant craters in the Russian Arctic, thought to be the remnants of powerful gas blowouts, first attracted worldwide attention in 2014, when the 20 to 40-meter wide Yamal Crater was found quite close to the Bovanenkovo gas field. The prevailing hypothesis is that these craters are formed after gas is accumulated in cavities in the upper layers of permafrost, and increasing pressure ultimately unleashes an explosive force. Most of these craters are rather short-lived as they apparently quickly fill with water over several years and turn into small lakes. As of now, there are some 20 known and studied craters.
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Every so often the work of an early career researcher becomes so important, it captures the attention of their professional peers. Recognizing these young scholars of outstanding promise, the Alfred P. Sloan Foundation awards Sloan Research Fellowships to support their future breakthroughs and careers as leaders in their fields.
This year, three of those 128 early-career innovators come from UC Santa Barbara. I congratulate Sung Soo Kim, Fedor Manin and Timothy Brandt on this exceptional honor, said Pierre Wiltzius, dean of mathematical, physical and life sciences. With these fellowships, they join a rarefied group of 126 extraordinarily talented young scholars whose research shows great promise. I look forward to learning about the valuable discoveries these awards will support.
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More than one-third of the Corn Belt in the Midwest - nearly 30 million acres - has completely lost its carbon-rich topsoil, according to University of Massachusetts Amherst research that indicates the U.S. Department of Agriculture has significantly underestimated the true magnitude of farmland erosion.
In a paper published in the
Proceedings of the National Academy of Sciences, researchers led by UMass Amherst graduate student Evan Thaler, along with professors Isaac Larsen and Qian Yu in the department of geosciences, developed a method using satellite imagery to map areas in agricultural fields in the Corn Belt of the Midwestern U.S. that have no remaining A-horizon soil. The A-horizon is the upper portion of the soil that is rich in organic matter, which is critical for plant growth because of its water and nutrient retention properties. The researchers then used high-resolution elevation data to extrapolate the satellite measurements across the Corn Belt and the tr
Scientists have identified behavioural and linguistic changes in tweets in Spanish published by users suffering from depression and who are taking medication to treat this disease.