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tag photosynthesis culture genetics genomics ecology

Yeast Made to Harvest Light Hint at Evolution’s Past
Kamal Nahas, PhD | Feb 21, 2024 | 6 min read
Scientists transferred light-harvesting proteins into yeast for the first time, shining a light on the past lives of eukaryotic cells.
bacteria and DNA molecules on a purple background.
Engineering the Microbiome: CRISPR Leads the Way
Mariella Bodemeier Loayza Careaga, PhD | Mar 15, 2024 | 10+ min read
Scientists have genetically modified isolated microbes for decades. Now, using CRISPR, they intend to target entire microbiomes.
A scanning electron micrograph of the picozoan Picomonas judraskeda
Picozoans Are Algae After All: Study
Christie Wilcox, PhD | May 6, 2021 | 5 min read
Phylogenomics data place the enigmatic plankton in the middle of the algal family tree, despite their apparent lack of plastids—an organelle characteristic of all other algae.
A fruit bat in the hands of a researcher
How an Early Warning Radar Could Prevent Future Pandemics
Amos Zeeberg, Undark | Feb 27, 2023 | 8 min read
Metagenomic sequencing can help detect unknown pathogens, but its widespread use faces challenges.
Arabidopsis Genome
Barry Palevitz | Jan 7, 2001 | 8 min read
Courtesy National Science Foundation Headlines on the morning of December 14, 2000, trumpeted the end of a presidential election that promised to go on forever. But if California Institute of Technology molecular biologist Elliot Meyerowitz had his way, the front page would have read differently: "Plant Genome Sequenced" at the top, then, lower down, "Election Decided - See Page 2." In a tour de force that capped a year of genome blockbusters, European, Japanese, and American scientists complet
Genetic Parasites and a Whole Lot More
Barry Palevitz | Oct 15, 2000 | 10+ min read
Photo: Ori Fragman, Hebrew University Hordeum spontaneum, the plant studied for BARE-1 retroelements. With genome sequences arriving almost as regularly as the morning paper, the public's attention is focused on genes--new genes to protect crops against pests; rogue genes that make bacteria resistant to antibiotics; faulty genes that, if fixed, could cure diseases such as muscular dystrophy. What many people don't realize is that genes account for only part of an organism's DNA, and in many c
Going Viral
Breeann Kirby and Jeremy J. Barr | Sep 1, 2013 | 10+ min read
From therapeutics to gene transfer, bacteriophages offer a sustainable and powerful method of controlling microbes.
A Genomic View of Oceanic Life
Leslie Pray | Oct 14, 2001 | 6 min read
Last year, scientists discovered a unique, energy-generating, light-absorbing protein previously unknown to exist in oceanic life. They named the protein proteorhodopsin.1 The bacteria that harbor it are a distinct phylogenetic group known as SAR86. This year, scientists learned that as much as 10 percent of the ocean's surface is occupied by these proteorhodopsin-containing bacteria--as many as 1x105 cells per milliliter of sea water.2 The researchers, led by marine microbiologist Edward DeLo
An Ocean of Viruses
Joshua S. Weitz and Steven W. Wilhelm | Jul 1, 2013 | 10+ min read
Viruses abound in the world’s oceans, yet researchers are only beginning to understand how they affect life and chemistry from the water’s surface to the sea floor.
Chloroplast Studies Point to Crop Enhancements
Barry Palevitz | Apr 11, 1999 | 5 min read
With news about Dolly and embryonic stem cells the stuff of cocktail party conversation, cloning a transgenic sheep or cow seems like child's play. The recipe is simple: Insert a pet gene into the nucleus of a cultured cell, fuse it with an enucleated egg, and voilà--a cow with high-octane milk. But incorporating genes into nuclear chromosomes isn't the only road to fame and fortune. Animals and plants have other sources of genetic information--their respiratory mitochondria and photosy

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