Worldwide hemisphere-dependent lean in Cook pines - Johns - 2017 - Ecology. Under most conditions, trees grow vertically in response to the opposing influences of light and gravity (Wyatt and Kiss 2013).
In challenging environments, where competition for light or mechanical stress is intense, trees may grow non-vertically (Loehle 1986). Here we describe a novel hemisphere-dependent leaning habit in Araucaria columnaris (Cook pine) (J.R. Forst.), a widely cultivated conifer endemic to New Caledonia. Specifically, in a large sample of individuals from around the world, we demonstrate that the Cook pines’ lean is non-random: trees in the northern hemisphere lean south, and those in the southern hemisphere lean north.
American Society of Agronomy. May 24, 2017 - Camelina: Have you heard of it?
It’s an emerging alternative oilseed crop in parts of the Great Plains. Camelina at flowering. Photo credit Augustine Obour. How the transgenic petunia carnage of 2017 began. Two years ago, plant biologist Teemu Teeri was walking by a train station in Helsinki when he noticed some vivid orange petunias in a planter.
The flowers reminded Teeri, who has studied plant pigments at the University of Helsinki, of blooms created in a landmark gene-engineering experiment some 30 years earlier. AMKK presents: Botanical animation "Story of Flowers" full ver. Just add water: Could resurrection plants help feed the world? This week we spoke to Professor Henk Hilhorst (Wageningen University and Research) about his research on desiccation tolerance in seeds and plants.
Could you begin by telling us a little about your research? I am a plant physiologist specializing in seed biology. Travel - The woman giving life to the spirit of plants. If you were walking past her, you would think Frédérique Soulard was scrawling random words on the pavement.
On closer inspection, her use of a little white arrow gives the game away. The words she writes are the names of the little scrawny plants or weeds growing out of the cracks in the ground, the ones that most of us ignore, even step on. It is a way for her to combine her love of words and storytelling with her herbalist knowledge and upbringing – and her desire to keep history and the seemingly insignificant alive. Citrus in a nutshell. Phylogenetic origin of limes and lemons revealed by cytoplasmic and nuclear markers. Skip to Main Content Sign In Register Advanced Search.
On Soil and Speciation — In Defense of Plants. When researchers took a closer look at the natural histories of these two species, they found that they were in a sense isolated from one another.
The isolation is due to major phenological or timing differences in their reproductive efforts. H. forsteriana flowers roughly six weeks before H. belmoreana. Flowering time is certainly enough to drive a wedge between populations but the question that still needed answering was how do such phenological asynchronies occur, especially on an island with a land area less than 12 square kilometers? As it turns out, the answer all comes down to soil. Individuals of H. belmoreana are restricted to growing in neutral to acidic soils whereas H. forsteriana seems to prefer to grow in soils rich in calcarenite. Thanks to their attention to detailed life history events and conditions, researchers were able to show that soil preferences caused a phenological shift in the flowering of these two related species.
Becoming weeds : Nature Genetics. Scientist Sees Squirrel. Photos: Henna body art NYHENNA via flickr.com CC BY-NC-SA 2.0; Henna flowers and leaves J.M.
Garg via wikipedia.org CC BY-SA 4.0 Note: This is a science outreach piece belonging to a series I wrote for the newsletter of the Fredericton Botanic Garden. I’d be happy to see it modified for use elsewhere and so am posting the text here under a CC BY-NC 4.0 license. If you use it, though, I’d appreciate hearing where and how. Henna-based body art has thousands of years of history in India, Africa, and the Middle East, and it’s an increasingly common sight in the Western world too. The paste henna artists use is reconstituted from dried and ground leaves of the henna plant (sometimes called Egyptian privet). The roots of an early plant partnership. When plants began colonizing land over 450 million years ago they met rock.
Lots of rock. And only rock. The Power of Leaves — In Defense of Plants. The Planthunter – Terrifying Plants: Be Scared, Very Scared. This is what’s threatening crops around the world. Readers with a long memory will remember the Global Crop Loss Survey, which we blogged about here back in November.
Just to remind everyone else: Over a period of three months (November 2016 – January 2017), 1142 responses from 216 respondents in 67 countries were recorded during the Global Crop Loss Survey organized by the Crop Loss Subject Matter Committee of the ISPP [International Congress of Plant Pathology]. This appears to be the first Survey of this kind ever conducted. Well, some preliminary results are out. At this stage, a key question concerns the overall representativeness of the information gathered. The money table is this: Why do the world’s largest trees have some of the smallest leaves? Conifers are the world’s tallest, widest, and oldest trees. But they have some of the smallest leaves in the plant kingdom, with most never growing beyond 6 centimeters. To find out why, scientists mathematically modeled how liquid nutrients move through the needlelike leaves of conifers, including redwoods and cedars. They focused on sugars, which are produced in the leaves by photosynthesis and transported through tubes 20 times narrower than a human hair to roots and new shoots.
Seed Anchor — In Defense of Plants. One of the biggest challenges these plants face starts before they even germinate. This is especially true for orchids. Orchid seeds are more like spores than they are seeds. 'Oldest plants on Earth' discovered. Image copyright Stefan Bengtson The origins of plants may go back hundreds of millions of years earlier than previously thought, according to fossil evidence. Ancient rocks from India suggest plants resembling red algae lived 1.6 billion years ago in what was then shallow sea. Crop Scientists Are Racing to ID the Wild Relatives of Common Food Crops to Create a Climate Change-Resilient Agriculture. Kim Hummer's official title is Research Leader for the U.S. Department of Agriculture's National Clonal Germplasm Repository: Small Fruit and Specialty Crop Curator. Another description might be simply "plant explorer. " Botany Lab of the Month, Presidential Inauguration Edition: Saffron.
If you like your spices gold-colored and expensive, find some fresh Crocus sativus flowers and grab ‘em by the…disproportionately large female reproductive organ. Small hands might work best, though it might turn your skin orange. Saffron is probably from the Middle East. If that bothers you, you may want to ban it from your spice shelves, however ill that bodes for the quality of your cabinet. After all, there is a stigma against that sort of thing. Lichens in the city (trailer, Scotland 2016) The Planthunter – The Surprising Botany of Icecream. There Are More Than 2,000 Plants In This Lush Coworking Space. In Praise of Poison Ivy – awkward botany. Roses are red. Violets are blue. What gives flowers those eye-catching hues? Discovery To find answers, scientists delve into the world of plant genetics February 13, 2017.
Convergent Carnivores — In Defense of Plants.
New research on why plant tissues have a sense of direction. Scientists at the John Innes Centre, Norwich have published new evidence that plant tissues can have a preferred direction of growth and that this characteristic is essential for producing complex plant shapes. Dr Alexandra Rebocho The work, carried out by Dr Alexandra Rebocho and colleagues in Professor Enrico Coen’s laboratory, contributes a new piece to the puzzle of how plant shapes are formed, and could have wide implications on our understanding of shape formation, or ‘morphogenesis’, in nature.
Improved understanding of how genes influence plant shape formation could inform research into crop performance and lead to better-adapted, higher yield crop varieties. The pioneering research, published in eLife, required an integrative approach, using diverse techniques including computer modelling, 3D-imaging, fluorescence imaging and a range of genetic techniques. Iceberg lettuce in short supply – other leafy greens can fill the gap - AoBBlog. Modern lettuces are grown a long way from where they are consumed, and genetically are a long way from their ancestors. By Gail Taylor, Annabelle Damerum, Nikol Voutsina and Hazel Smith. Sotwp 2016. State of the World's Plants. This report provides, for the first time, a baseline assessment of our current knowledge on the diversity of plants on earth, the global threats these plants currently face, and the policies in place and their effectiveness in dealing with these threats. Can ‘plant blindness’ be cured?
WordPress.com ‹ Log In. The Great Green Wall of Africa. The Great Wall of China was built over a millennium to ward off nomadic raiders. Anna Laurent » Botanic Notables. 243791m. #Advent Botany – the full story! Review: ‘The Creeping Garden,’ on the Wonders of the Slime Mold. Medicinal knowledge in the Amazon. Crpo Wild Relatives. Crop calendar. Eurybia spectabilis - Gardenaway. Showy Aster Guide - New York Natural Heritage Program. Mistaken_Identity Natives/Invasives. I Am a Botanist (And No, I Don't Grow Marijuana)