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New Phyt Tansley Review. Putting the brakes on: abscisic acid as a central environmental regulator of stomatal development

"Mature leaves detect environmental signals and relay messages to immature leaves to tell them how to adapt and grow. Stomata on mature leaves may act as stress signal-sensing and transduction centres, locally by aperture adjustment, and at long distance by optimizing stomatal density to maximize future carbon gain while minimizing water loss."

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Plant Biology Teaching Resources (Higher Education)
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Wild Australia: can the world’s oldest plant be saved?

Wild Australia: can the world’s oldest plant be saved? | Plant Biology Teaching Resources (Higher Education) | Scoop.it
BLINDFOLDED and disoriented, all sense of direction is lost as our helicopter corkscrews into the sky on the windswept extremity of Tasmania’s World Heritage-listed South West Wilderness area.
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Fascinating - 43,000 year old triploid angiosperms, Lomatia tasmanica. Scientists are trying to propagate it by tissue culture with limited success

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A review of the effects of soil organisms on plant hormone signalling pathways

A review of the effects of soil organisms on plant hormone signalling pathways | Plant Biology Teaching Resources (Higher Education) | Scoop.it

Plants interact with a large number of soil organisms. For a long time, these interactions have been the research area of soil ecologists and trophic relationships and physico-chemical modifications of the soil matrix were generally proposed as mechanisms underlying plant-soil organism interactions. However, some specific symbioses and diseases have been well characterized at the molecular level by plant biologists and microbiologists. These interactions involve a physical contact between soil organism and plant. They are mediated through signal molecules that play upon the different plant hormonal signalling pathways, leading to modifications in plant development and defence. Nowadays, the role of signal molecules emerges as an important feature of interactions between plants and free-living soil organisms. In this review we discuss genetic and physiological evidences of hormone signalling involvement in plant response to physically associated but also free-living soil organisms, for very different taxa ranging from the micrometer to the centimetre scales. The same hormone signalling pathways seems to be activated by very different kinds of soil organisms such as bacteria, nematodes, collembola and even earthworms, with common consequences on plant growth, development and defence. Plant hormonal homeostasis appears to be the corner stone to understand and predict the issue of the multiple interactions that plants entertain with the community of soil organisms.


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Editors advise “How to publish” at Plant Biology 2014

Editors advise “How to publish” at Plant Biology 2014 | Plant Biology Teaching Resources (Higher Education) | Scoop.it
During the recent Plant Biology conference, editors from the ASPB journals The Plant Cell and Plant Physiology shared insights and fielded questions about
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Washington Post: Scientists turn to public to help pay for research

Washington Post: Scientists turn to public to help pay for research | Plant Biology Teaching Resources (Higher Education) | Scoop.it
In over three decades of studying ferns, Duke University professor Kathleen Pryer has received her share of grant money. But for her newest project, she’s getting help from a retired nurse in Canada and a 17-year-old in Arkansas.
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Remember that Azolla genome crowd-funding idea we shared a while ago? It got funded! Read more here.

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Fujitsu Lettuce? In Japan, idled electronics factories find new life in farming

Fujitsu Lettuce? In Japan, idled electronics factories find new life in farming | Plant Biology Teaching Resources (Higher Education) | Scoop.it
Struggling to compete with rivals in South Korea or China in businesses like televisions and smartphones, a range of Japanese electronics giants are converting idled factories to agriculture.
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Robert Hooke's Micrographia (audio-annotated flipbook)

Robert Hooke's Micrographia (audio-annotated flipbook) | Plant Biology Teaching Resources (Higher Education) | Scoop.it

Here's a nice way to display a 500 year old book!

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What Plants Talk About - Documentary - YouTube

When we think about plants, we don't often associate a term like "behavior" with them, but experimental plant ecologist JC Cahill wants to change that. The U...
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I think I've already posted this, but just heard a talk by Consuelo de Moraes who studied the interaction between parasitic dodder and its host http://www.sciencemag.org/content/313/5795/1964

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Simulated root section including all cell types using RootSlice - YouTube

 video created by Jouke Postma and Jie Wu property of Penn State
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Jonathan Lynch at Penn State's lab makes amazing videos (credit to Jouke Postma also on many of them). Check out more ontheir youtube page https://www.youtube.com/user/RootsLabPSU/videos

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Why we should trust scientists

Why we should trust scientists | Plant Biology Teaching Resources (Higher Education) | Scoop.it
Many of the world's biggest problems require asking questions of scientists -- but why should we believe what they say? Historian of science Naomi Oreskes thinks deeply about our relationship to belief and draws out three problems with common attitudes toward scientific inquiry -- and gives her own reasoning for why we ought to trust science.
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Renato P. dos Santos's curator insight, June 30, 6:34 AM

Or has Science become a repressing ideology? (Feyerabend)

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BBC - BBC Radio 4 and Kew Gardens to explore history of plant science - Media centre

BBC - BBC Radio 4 and Kew Gardens to explore history of plant science - Media centre | Plant Biology Teaching Resources (Higher Education) | Scoop.it
This summer BBC Radio 4 is to broadcast a major new series that will explore our changing relationship with plants, from Carl Linnaeus and the birth of modern botany right through to the modern day.
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A chemical-free paper : The Sceptical Chymist

A chemical-free paper : The Sceptical Chymist | Plant Biology Teaching Resources (Higher Education) | Scoop.it

This is great!

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PNAS: Hit-and-run transcriptional control by bZIP1 mediates rapid nutrient signaling in Arabidopsis

PNAS: Hit-and-run transcriptional control by bZIP1 mediates rapid nutrient signaling in Arabidopsis | Plant Biology Teaching Resources (Higher Education) | Scoop.it

"Cellular signals evoke rapid and broad changes in gene regulatory networks. To uncover these network dynamics, we developed an approach able to monitor primary targets of a transcription factor (TF) based solely on gene regulation, in the absence of detectable binding. This enabled us to follow the transient propagation of a nitrogen (N) nutrient signal as a direct impact of the master TF Basic Leucine Zipper 1 (bZIP1)

Unexpectedly, the largest class of primary targets that exhibit transient associations with bZIP1 is uniquely relevant to the rapid and dynamic propagation of the N signal. Our ability to uncover this transient network architecture has revealed the “dark matter” of dynamic N nutrient signaling in plants that has previously eluded detection.."

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Coffee Crop Disease, Spurred by Climate Change, Threatens Latin America's Economic Foundation

Coffee Crop Disease, Spurred by Climate Change, Threatens Latin America's Economic Foundation | Plant Biology Teaching Resources (Higher Education) | Scoop.it
Coffee is one of Latin America's major exports, sustaining independent farmers in rural areas as well as corporate bankers in metropolitan areas. But changing climate patterns have exaggerated plagues and droughts in the region, and this has produced less than desirable conditions for coffee production.
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Comparative Phylogenomics Uncovers the Impact of Symbiotic Associations on Host Genome Evolution

Comparative Phylogenomics Uncovers the Impact of Symbiotic Associations on Host Genome Evolution | Plant Biology Teaching Resources (Higher Education) | Scoop.it

Abstract


Mutualistic symbioses between eukaryotes and beneficial microorganisms of their microbiome play an essential role in nutrition, protection against disease, and development of the host. However, the impact of beneficial symbionts on the evolution of host genomes remains poorly characterized. Here we used the independent loss of the most widespread plant–microbe symbiosis, arbuscular mycorrhization (AM), as a model to address this question. Using a large phenotypic approach and phylogenetic analyses, we present evidence that loss of AM symbiosis correlates with the loss of many symbiotic genes in the Arabidopsis lineage (Brassicales). Then, by analyzing the genome and/or transcriptomes of nine other phylogenetically divergent non-host plants, we show that this correlation occurred in a convergent manner in four additional plant lineages, demonstrating the existence of an evolutionary pattern specific to symbiotic genes. Finally, we use a global comparative phylogenomic approach to track this evolutionary pattern among land plants. Based on this approach, we identify a set of 174 highly conserved genes and demonstrate enrichment in symbiosis-related genes. Our findings are consistent with the hypothesis that beneficial symbionts maintain purifying selection on host gene networks during the evolution of entire lineages.


Via Pierre-Marc Delaux, Jean-Michel Ané
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Pierre-Marc Delaux's curator insight, July 17, 11:57 AM

Yeah!! Online finally :)

Jean-Michel Ané's curator insight, July 17, 12:28 PM

Paper from our lab!

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Assistant Professor Position in Plant-Microbe Interactions at UW Madison

Assistant Professor  Position in Plant-Microbe Interactions at UW Madison | Plant Biology Teaching Resources (Higher Education) | Scoop.it

The Department of Plant Pathology at the University of Wisconsin-Madison is searching broadly at the assistant professor level for a researcher who studies the ecology or epidemiology of plant-associated microbes through the use of emerging and novel quantitative methods. Areas of focus could include, but are not limited to: role of plant pathogens in the ecology of agricultural or natural systems; ecology of plant-associated microbes; population genetics of plant pathogens; metapopulation and dispersal dynamics; or the influence of landscapes and the physical environment on host-pathogen dynamics. The position carries a 70% research / 30% teaching distribution of effort, and a 9-month appointment.

Research Responsibilities: We expect the incumbent to develop a research program with both empirical and theoretical components that form a bridge between basic and applied research. Further, we expect the incumbent to collaborate with colleagues in other programs such as plant biology, microbiology, ecology, modeling and related disciplines. In addition, the successful candidate will be expected to develop a vigorous extramurally funded research program.

Teaching Responsibilities: Teaching responsibilities include leading a graduate level course in ecology, epidemiology and control of plant diseases. The University of Wisconsin attracts excellent graduate students and offers high-quality research and teaching facilities. Many opportunities exist on the campus for collaboration across a broad array of disciplines. The successful candidate will also be expected to teach and mentor graduate and undergraduate students.


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ABC News: Canola virus wipes out crops in South Australia (2014)

ABC News: Canola virus wipes out crops in South Australia (2014) | Plant Biology Teaching Resources (Higher Education) | Scoop.it

Scientists say an outbreak of beet western yellows virus is one of the worst cases ever seen in Australia.


Early estimates suggest up to 10,000 hectares of canola have been affected, in South Australia's lower north, mid north and lower mallee regions. The virus is transported by green peach aphids, which have thrived in the state's recent warm and humid weather. Ag consultant Mick Faulkner says agronomists felt like they'd been "blind-sided" after not being able to work out what had been affecting crops. "It took everyone a fair bit of time to realise that we weren't killing the aphids," Mr Faulkner said. "Green paddocks are now brown. "Those that have been affected, I have grave fears that they won't yield anything at all."


Virus halted for now - The South Australian Research and Development Institute (SARDI) says it's now testing samples to confirm how the virus is spreading and where else it might turn up. Pulse pathologist Jenny Davidson says with cooler weather, the virus-transmitting aphids aren't moving and at the moment the best thing growers can do is "nothing", "We expect that the spread of this virus would've stopped for now, so there's no point people going out and spraying aphids now," she says. "It's also important growers ascertain it actually is the virus causing problems in their canola crops, there may be other things going on as well. "The potential risk is what these aphids will do in spring time. "We're not sure whether or not pulse crops are at risk but we'll have that information back well and truly before the spring time flights." Ms Davidson says the virus isn't uncommon, but what is unusual is the extent of damage and infection being seen. She says it's taken everyone by surprise. "I've never seen this level of damage from any virus in crops," Ms Davidson says. "It's the magnitude of what we're dealing with that is totally un-expected."


Via Kamoun Lab @ TSL
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Milestones in Plant Science - add your suggestions to the developing timeline hosted by ASPB

Milestones in Plant Science - add your suggestions to the developing timeline hosted by ASPB | Plant Biology Teaching Resources (Higher Education) | Scoop.it

What are the big events that shaped our understanding of plants? This site is starting to collect major milestones in the discipline, but needs your help. Send in your suggestion!

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The Scientist Magazine® profile of Bruce Ames: Mutagens and Multivitamins

The Scientist Magazine® profile of Bruce Ames: Mutagens and Multivitamins | Plant Biology Teaching Resources (Higher Education) | Scoop.it
Not one to shy away from controversy, Bruce Ames has pitted himself against industry groups, environmentalists, and his peers through his work identifying DNA mutagens. And he’s not done yet.
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This is a wonderful profile of an inspiring scientists. When I was an undergraduate at Berkeley, second year life science students were invited to a meeting in which members of each subdiscipline explained their field of study to us. Bruce Ames talked to us about Biochemistry and I signed up to be a Biochem major the next day.

You can see his infectious enthusiasm and humor in this article. 


"When I feel like exercise, I run my experiments, I skip my controls, and I jump to conclusions."

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California drought: America’s golden state runs dry - and its farmers are struggling to survive

California drought: America’s golden state runs dry - and its farmers are struggling to survive | Plant Biology Teaching Resources (Higher Education) | Scoop.it
At Harris Farms in California’s Central Valley, it is not difficult to discern the effects of the state’s continuing drought. Fields that in previous years would have been lined with tomatoes or broccoli now contain nothing but brown earth. Around two thirds of the farm’s 14,000 acres are fallow, and for the first year since it started to grow salad leaves more than three decades ago, the farm has planted not a single head of lettuce.
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Electric Defence (Plant) - YouTube

GLUTAMATE RECEPTOR-LIKE genes mediate leaf-to-leaf wound signalling Nature 500, 422--426 (22 August 2013) doi:10.1038/nature12478 http://www.nature.com/natur...
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Edward Farmer's lab has been studying the systemic signals that arise from insect herbivory, including electrical signals. See the link also to their paper showing the involvement of Glutamate Receptor Like Genes in transduction of thsi signal.

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Secrets of root development revealed

Secrets of root development revealed | Plant Biology Teaching Resources (Higher Education) | Scoop.it

One of the speakers at the SEB 2014 conference was mentioned by the BBC!

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Chronobiology: Past, Present & Future

Chronobiology: Past, Present & Future | Plant Biology Teaching Resources (Higher Education) | Scoop.it
25 Years of the Kay Laboratory (1989–2014) BY PRATEEK TRIPATHI ASPB Student Ambassador, University of Southern California “The greatest thing of the past
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Have you heard ?

Have you heard ? | Plant Biology Teaching Resources (Higher Education) | Scoop.it

25th International Conference on Arabidopsis Research (ICAR 2015)
Paris, France, July 5-9, 2015

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Image source:

http://upload.wikimedia.org/wikipedia/commons/5/53/Eiffel_tower_from_trocadero.jpg

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Project overview: ENSA - Engineering Nitrogen Symbiosis for Africa

Project overview: ENSA - Engineering Nitrogen Symbiosis for Africa | Plant Biology Teaching Resources (Higher Education) | Scoop.it

Really enjoyed today's talk by Giles Oldroyd on the molecular basis of root nodule symbiosis establishment, which has the goal of (ultimately) introducing this capacity to grains- see the proejct overview at ENSA https://www.ensa.ac.uk/

A few links to the biology:
Synthetic biology approaches to engineering the nitrogen symbiosis in cereals.http://www.ncbi.nlm.nih.gov/pubmed/24687978

A GRAS-Type Transcription Factor with a Specific Function in Mycorrhizal Signaling http://www.cell.com/current-biology/abstract/S0960-9822%2812%2901146-3

Nuclear calcium signaling in plants http://www.plantphysiol.org/content/163/2/496.full

Activation of Calcium/Calmodulin-Dependent Protein Kinase http://www.plantcell.org/content/25/12/5053.long

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Hans Lambers on soil phosphate acquisition in impoverished soil (AoB Blog)

Hans Lambers on soil phosphate acquisition in impoverished soil (AoB Blog) | Plant Biology Teaching Resources (Higher Education) | Scoop.it

From the AoB Blog: This week guest author Charlie Haynes is AoB Blog’s roving reporter at the EPSO/FESPB plant biology Europe conference.   Hans Lambers is the Winthrop Professor at the University of Western Australia. His research focuses on mineral nutrition of native Australian plants and crop and pasture legumes.

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