Quantcast

Latest Plastid Stories

2012-02-21 15:10:48

Genome analysis of “living fossil” sheds light on the evolution of plants Atmospheric oxygen really took off on our planet about 2.4 billion years ago during the Great Oxygenation Event. At this key juncture of our planet´s evolution, species had either to learn to cope with this poison that was produced by photosynthesizing cyanobacteria or they went extinct. It now seems strange to think that the gas that sustains much of modern life had such a distasteful beginning....

2011-11-04 23:04:27

The discovery of a new gene is helping researchers at Michigan State University envision more-efficient molecular factories of the future. A team of researchers, led by Katherine Osteryoung, MSU plant biologist, announced the discovery of Clumped Chloroplasts — a new class of proteins — in the current issue of the Proceedings of the National Academy of Sciences. CLMP1 plays a key role in helping chloroplasts, which carry out the life-sustaining process of photosynthesis,...

2010-06-02 12:24:15

Inconspicuous "little brown balls" in the ocean have helped settle a long-standing debate about the origin of malaria and the algae responsible for toxic red tides, according to a new study by University of British Columbia researchers. In an article published this week in the Proceedings of the National Academy of Sciences Early Edition, UBC Botany Prof. Patrick Keeling describes the genome of Chromera and its role in definitively linking the evolutionary histories of malaria and...

7948744d3f10306d7827618ce23aec631
2010-03-30 08:47:22

Max Planck scientists develop gene switch for chloroplasts in plant cells In plant cells, the cell nucleus and the mitochondria are not the only places where genes are read and translated into proteins. The organelles of photosynthesis - the chloroplasts - also have their own DNA, messenger RNA and ribosomes for forming proteins. Max Planck scientists have now discovered how to regulate the formation of proteins in the chloroplasts. They can use so-called riboswitches to switch the genes in...

2010-02-24 08:50:10

The origins of flowering plants from peas to oak trees are now in clearer focus thanks to the efforts of University of Florida researchers. A study appearing online this week in the Proceedings of the National Academy of Sciences unravels 100 million years of evolution through an extensive analysis of plant genomes. It targets one of the major moments in plant evolution, when the ancestors of most of the world's flowering plants split into two major groups. Together the two groups make up...

2009-06-25 08:48:33

The goal of DNA barcoding is to find a simple, cheap, and rapid DNA assay that can be converted to a readily accessible technical skill that bypasses the need to rely on highly trained taxonomic specialists for identifications of the world's biota. This is driven by a desire to open taxonomic identifications to all user groups and by the short supply of taxonomists that do not even exist in many groups. Although DNA barcoding is being rapidly accepted in the scientific literature and popular...

2008-11-25 20:25:34

A Texas A&M University biologist says research shows sea slugs are solar-powered and behave like a plant. Biology professor James Manhart says the sea slug's main food source is a type of alga that they digest while retaining the plastids in the plant cells. The plastids continue to photosynthesize and provide food for the slug. Manhart said the a slug can survive for at least nine months by trapping solar energy and converting it into food. We found that the slug has at least one gene...

24ba59c30aeba537b2e8738f423130071
2008-11-25 11:21:46

Researchers have reportedly discovered the method by which sea slugs are able to operate on solar power. "Elysia chlorotica," lives along the Atlantic seaboard of the United States, and although it may not seem to be anything different from other common slugs, it has the ability to behave like a plant and harness energy from the sun. James Manhart, a biologist at Texas A&M University has been studying these tiny creatures for the past decade and, along with collaborators from several...

2008-09-07 03:00:19

By Shimizu, Masanori Goto, Maki; Hanai, Moeko; Shimizu, Tsutomu; Izawa, Norihiko; Kanamoto, Hirosuke; Tomizawa, Ken-Ichi; Yokota, Akiho; Kobayashi, Hirokazu Strategies employed for the production of genetically modified (GM) crops are premised on (1) the avoidance of gene transfer in the field; (2) the use of genes derived from edible organisms such as plants; (3) preventing the appearance of herbicideresistant weeds; and (4) maintaining transgenes without obstructing plant cell...

2008-06-24 03:00:31

By Berthome, Richard Thomasset, Muriel; Maene, Marion; Bourgeois, Nathalie; Froger, Nicole; Budar, Francoise Purine metabolism is crucial in living cells and involves three complex pathways in plants: the de novo synthesis, the salvage, and the degradation pathways. The relative importance of each pathway in plant development and reproduction, however, is still unclear. We identified two T-DNA insertions in the Arabidopsis (Arabidopsis thaliana) PUR4 gene (At1g74260) that encodes...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
Related