Potassium (K+) is one of the most abundant elements of soil composition but its very low availability limits plant growth and productivity of ecosystems. Because this cation participates in many biological processes, its constitutive uptake from soil solution is crucial for the plant cell machinery. Thus, the understanding of strategies responsible of K+ nutrition is a major issue in plant science. Mycorrhizal associations occurring between roots and hyphae of underground fungi improve hydro-mineral nutrition of the majority of terrestrial plants. The contribution of this mutualistic symbiosis to the enhancement of plant K+ nutrition is not well understood and poorly studied so far. This mini-review examines the current knowledge about the impact of both arbuscular mycorrhizal and ectomycorrhizal symbioses on the transfer of K+ from the soil to the plants. A model summarizing plant and fungal transport systems identified and hypothetically involved in K+ transport is proposed. In addition, some data related to benefits for plants provided by the improvement of K+ nutrition thanks to mycorrhizal symbioses are presented.
Biology: Changing the world inspiring and celebrating the great biologists of the UK - a new project by the Society of Biology, Heritage Lottery Fund and BBSRC.
Biology: Changing the World will celebrate life science research and life scientists, communicating their discoveries to students and teachers. The project focusses on how biology has saved the world, from discoveries that have changed how we treat a disease to scientists that have campaigned to save a species on the bridge of extinction. Sharing the journey of the individual; how they became a biologist and the hurdles they overcame will be a crucial part of our project." .
Are your kids struggling with math? Math 42 by Cogeon is a great math app designed to help and support students with every steps when solving an algebraic equation. A great app for math support that shows student aged 10 to 16 how to solve problems!
"Technology integration in instruction is a process that starts with setting out clearly defined objectives and ends with assessing learning outcomes against these objectives, and all along the way several tools and strategies are employed to attend to the overall performance of this process. Hence, the first question teachers need to ponder when thinking about using technology in class is not what kind of technology to use but what do they want to achieve behind using this technology? On a deeper level, they need to find answers to questions such as: Does this technology constitute a a good addition to the learning task ? Can the same learning task be performed without using technology? These and several other questions should come to the forefront when you start planning a technology-based learning activity.
By considering the unique sea-level "fingerprint" created by a melting ice sheet, a team of geophysicists in North America has developed a new method for pinpointing the sources of global sea-level rise. Their approach could provide a way to measure the impact of the Greenland and West Antarctic ice sheets – the greatest sources of uncertainty in projections of future sea-level changes.
Long-term variations in sea level are caused by processes including thermal expansion of the water, changes in ocean circulation, and changes in the size of glaciers and ice sheets. Measurements from tide gauges indicate a global average sea-level rise of 1–2 mm/yr during the 20th century. However, this estimate ignores geographical variations in sea level, and provides no information about the contribution of different processes.
One possible way to pick apart the total sea-level change is to look for the distinct pattern, or fingerprint, of a melting ice sheet. Close to the ice sheet, for example, the sea level tends to fall. This is a result of both the local uplift of the Earth's crust after being relieved of the great weight of the ice and a reduction in the ice sheet's gravitational pull on the ocean. Moving further away from the ice sheet, however, the sea level rises progressively.
Melt rates of 0.3 and 0.5 mm/yr were assumed for the Greenland (GIS) and West Antarctic (WAIS) ice sheets, respectively, along with their predicted fingerprints. The researchers then applied the Kalman filter to this synthetic dataset, initializing the algorithm with melt rates of zero.
The algorithm was found to estimate the melt rates most accurately when applied to the maximum number of tide gauges, providing enough information for the ice-sheet fingerprints to be separated from the globally uniform trend. The final estimated melt rates for the GIS and WAIS were 0.21 and 0.38 mm/yr, respectively, close to the values used in the synthetic dataset. The 1σ uncertainties associated with these values indicate the magnitude of ice-sheet melting that could potentially be detected in real sea-level records.
Icons and symbols are small visual elements that you can attach to topics in your mind maps, which add meaning and context to them. These miniature images can be used to depict priority, types of activities, tasks, and types of information and ideas.
This site makes it easy to create images merged with QR codes. It's great for creating stylish interactive logos or add QR links or info to photos. Just choose an image, enter the QR code details, drag into place and download the result.
When I first saw this infographic (created by Dr. Roland Rios) based on Schlechty’s Levels of Engagement, it actually took me a moment to collect my thoughts. I quickly asked myself, “What the heck does student engagement even mean?” And then followed that with, “I wonder if my students actually have high attention and commitment, or are they just being strategically compliant?”
Filamentous pathogens pose a substantial threat to global food security. One central question in plant pathology is how pathogens cause infection and manage to evade or suppress plant immunity to promote disease. With many technological advances over the past decade, including DNA sequencing technology, an array of new tools has become embedded within the toolbox of next-generation plant pathologists. By employing a multidisciplinary approach plant pathologists can fully leverage these technical advances to answer key questions in plant pathology, aimed at achieving global food security. This review discusses the impact of: cell biology and genetics on progressing our understanding of infection structure formation on the leaf surface; biochemical and molecular analysis to study how pathogens subdue plant immunity and manipulate plant processes through effectors; genomics and DNA sequencing technologies on all areas of plant pathology; and new forms of collaboration on accelerating exploitation of big data. As we embark on the next phase in plant pathology, the integration of systems biology promises to provide a holistic perspective of plant–pathogen interactions from big data and only once we fully appreciate these complexities can we design truly sustainable solutions to preserve our resources.
"Today I am sharing with you an iPad Bingo card created by iPad Bingo. This card is available for free download from this page. iPad Bingo card is a chart that features 6 iPad apps and with each of these apps is attached a set of activities to be achieved through the use of that app. These activities are divided into three levels with different layers of difficulty."
From July 2012 Nature Publishing Group launches Emerging Microbes & Infections, an online-only, open access journal publishing Original Articles, Reviews, Editorials, Case Reports, News and Views, Letters to the Editor and Research Summaries pertaining to all areas of emerging microbes and infectious diseases.
Sharing your scoops to your social media accounts is a must to distribute your curated content. Not only will it drive traffic and leads through your content, but it will help show your expertise with your followers.
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Integrating your curated content to your website or blog will allow you to increase your website visitors’ engagement, boost SEO and acquire new visitors. By redirecting your social media traffic to your website, Scoop.it will also help you generate more qualified traffic and leads from your curation work.
Distributing your curated content through a newsletter is a great way to nurture and engage your email subscribers will developing your traffic and visibility.
Creating engaging newsletters with your curated content is really easy.