AudioStanford, CA— A team of researchers studying a flowering plant has zeroed in on the way cells manage external signals about prevailing...
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AudioStanford, CA—All living cells are held together by membranes, which provide a barrier to the transport of nutrients. They are also the...
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AudioStanford, CA—Plants spend their entire lifetime rooted to one spot. When faced with a bad situation, such as a swarm of hungry...
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AudioStanford, CA— Photosynthesis provides fixed carbon and energy for nearly all life on Earth, yet many aspects of this fascinating process...
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Audio Stanford, CA—Floods and droughts are increasingly in the news, and climate experts say their frequency will only go up in the future....
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March 27, 2014 Dr. José R. Dinneny, Carnegie Institution for Science, Department of Plant Biology We see plants everywhere in our daily lives, but half of the plant, the root system, is hidden...
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AudioStanford, CA— Evolution is based on diversity, and sexual reproduction is key to creating a diverse population that secures...
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AudioStanford, CA— As every gardner knows, nitrogen is crucial for a plant’s growth. But nitrogen absorption is inefficient. This means that...
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Fresh water constitutes less than 1% of the surface water on earth, yet the importance of this simple molecule to all life forms is immeasurable. Water represents the most vital reagent for chemical reactions occurring in a cell. In plants, water provides the structural support necessary for plant...
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Carnegie will receive Phase II funding through Grand Challenges Explorations, an initiative created by the Bill & Melinda Gates Foundation that enables individuals worldwide to test bold ideas to address persistent health and development challenges. Department of Plant Biology Director...
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Revolutionary progress in understanding plant biology is being driven through advances in DNA sequencing technology. Carnegie plant scientists have played a key role in the sequencing and genome annotation efforts of the model plant Arabidopsis thaliana and the soil alga ...
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Plants are not as static as you think. David Ehrhardt combines confocal microscopy with novel visualization methods to see the three-dimensional movement  within live plant cells to reveal the other-worldly cell choreography that makes up plant tissues. These methods allow his group to explore...
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Zhiyong Wang was appointed acting director of Department of Plant Biology in 2018. Wang’s research aims to understand how plant growth is controlled by environmental and endogenous signals. Being sessile, plants respond environmental changes by altering their growth behavior. As such, plants...
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Arthur Grossman believes that the future of plant science depends on research that spans ecology, physiology, molecular biology and genomics. As such, work in his lab has been extremely diverse. He identifies new functions associated with photosynthetic processes, the mechanisms of coral bleaching...
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Climate change and recent heat waves have put agricultural crops at risk, which means that understanding how plants respond to elevated temperatures is crucial for protecting our environment and food...
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Algae are everywhere. They are part of crusts on desert surfaces and form massive blooms in lakes and oceans. They range in size from tiny single-celled organisms to giant kelp. Algae also play...
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Washington, D.C.—Carnegie announced today that it will receive Phase II funding through Grand Challenges Explorations, an initiative created by the Bill & Melinda Gates Foundation that enables...
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Explore Carnegie Science

Chlamydomonas
March 21, 2019

Palo Alto, CA—The creation of new library of mutants of the single-celled photosynthetic green alga Chlamydomonas reinhardtii enabled a Carnegie- and Princeton University-led team of plant scientists to identify more than 300 genes that are potentially required for photosynthesis. Photosynthesis is the process by which plants, algae, and some bacteria convert energy from sunlight into carbohydrates—filling our planet’s atmosphere with oxygen as a byproduct.

Their findings are published this week in Nature Genetics.

Chlamydomonas represents a group of algae that are found around the globe in fresh and saltwater, moist soil, and even snow. They are

February 19, 2019

Heather Meyer, a postdoctoral fellow in David Ehrhardt’s Plant Biology lab since 2016, has been awarded Carnegie’s twelfth Postdoctoral Innovation and Excellence Award. These prizes are given to postdocs for their exceptionally creative approaches to science, strong mentoring, and contributing to the sense of campus community. The nominations are made by the departments and are chosen by the Office of the President. The recipients receive a cash prize and are celebrated at an event at their departments.  

Heather initiated a pioneering scientific project to identify the molecular mechanisms that plants use to sense and respond to seasonal temperatures in order to

February 12, 2019

Washington, DC— Carnegie’s Winslow Briggs, a giant in the field of plant biology who explained how seedlings grow toward light, died on February 11 at Stanford University Medical Center. He was 90.

Briggs joined Carnegie as the Director of the Department of Plant Biology in 1973 after teaching both at Harvard University—where he completed his bachelor’s degree, master’s degree, and Ph.D.—and at Stanford University. He held the position for two decades, establishing himself as a global leader in plant genetics and physiology, publishing landmark research on the molecular mechanisms that plants and other organisms use to sense and respond to light

Sue Rhee, Thomas Clandinin and Miriam B. Goodman discuss the NeuroPlant project over a tobacco plant in the greenhouse. (Image credit: L.A. Cicero)
January 22, 2019

Stanford, CA—For millennia, humanity has used medicinal plants and plant-based compounds to treat a variety of neurological ailments including epilepsy, mania, migraines, and bipolar disorder. Now a team of researchers from Carnegie and Stanford University is using microscopic worms to understand what these plant-derived molecules are and how they affect the brain’s biochemistry.

Called the NeuroPlant project, these efforts could lead to new, more efficient ways to develop drugs to treat a variety of neurological and psychiatric diseases in humans. Their work is funded by a Big Ideas grant from the Wu Tsai Neurosciences Institute.

“We’re interested

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Carnegie researchers recently constructed genetically encoded FRET sensors for a variety of important molecules such as glucose and glutamate. The centerpiece of these sensors is a recognition element derived from the superfamily of bacterial binding protiens called periplasmic binding protein (PBPs), proteins that are primary receptors for moving chemicals  for hundreds of different small molecules. PBPs are ideally suited for sensor construction. The scientists fusie individual PBPs with a pair of variants and produced a large set of sensors, e.g. for sugars like maltose, ribose and glucose or for the neurotransmitter glutamate. These sensors have been adopted for measurement of

Fresh water constitutes less than 1% of the surface water on earth, yet the importance of this simple molecule to all life forms is immeasurable. Water represents the most vital reagent for chemical reactions occurring in a cell. In plants, water provides the structural support necessary for plant growth. It acts as the carrier for nutrients absorbed from the soil and transported to the shoot. It also provides the chemical components necessary to generate sugar and biomass from light and carbon dioxide during photosynthesis. While the importance of water to plants is clear, an understanding as to how plants perceive water is limited. Most studies have focused on environmental conditions

Today, humanity is increasingly aware of the impact it has on the environment and the difficulties caused when the environment impacts our communities. Environmental change can be particularly harsh when the plants we use for food, fuel, feed and fiber are affected by this change. High salinity is an agricultural contaminant of increasing significance. Not only does this limit the land available for use in agriculture, but in land that has been used for generations, the combination of irrigation and evaporation gradually leads to increasing soil salinity.

The Dinneny lab focuses on understanding how developmental processes such as cell-type specification regulate responses to

Carnegie will receive Phase II funding through Grand Challenges Explorations, an initiative created by the Bill & Melinda Gates Foundation that enables individuals worldwide to test bold ideas to address persistent health and development challenges. Department of Plant Biology Director Wolf Frommer,  with a team of researchers from the International Rice Research Institute, Kansas State University, and Iowa State University, will continue to pursue an innovative global health research project, titled “Transformative Strategy for Controlling Rice Blight.”

Rice bacterial blight is one of the major challenges to food security, and this project aims to

Plants are not as static as you think. David Ehrhardt combines confocal microscopy with novel visualization methods to see the three-dimensional movement  within live plant cells to reveal the other-worldly cell choreography that makes up plant tissues. These methods allow his group to explore cell-signaling and cell-organizational events as they unfold.

These methods allow his lab to investigate plant cell development and structure and molecular genetics to understand the organization and dynamic behaviors of molecules and organelles. The group tackles how cells generate asymmetries and specific shapes. A current focus is how the cortical microtubule cytoskeleton— an

Arthur Grossman believes that the future of plant science depends on research that spans ecology, physiology, molecular biology and genomics. As such, work in his lab has been extremely diverse. He identifies new functions associated with photosynthetic processes, the mechanisms of coral bleaching and the impact of temperature and light on the bleaching process.

He also has extensively studied the blue-green algae Chlamydomonas genome and is establishing methods for examining the set of RNA molecules and the function of proteins involved in their photosynthesis and acclimation. He also studies the regulation of sulfur metabolism in green algae and plants.  

Grossman

Devaki Bhaya wants to understand how environmental stressors, such as light, nutrients, and viral attacks are sensed by and affect photosynthetic microorganisms. She is also interested in understanding the mechanisms behind microorganism movements, and how individuals in groups communicate, evolve, share resources. To these ends, she focuses on one-celled, aquatic cyanobacteria, in the lab with model organisms and with organisms in naturally occurring communities.

 Phototaxis is the ability of organisms to move directionally in response to a light source.  Many cyanobacteria exhibit phototaxis, both towards and away from light. The ability to move into optimal light

Matthew Evans wants to provide new tools for plant scientists to engineer better seeds for human needs. He focuses on one of the two phases to their life cycle. In the first phase, the sporophyte is the diploid generation—that is with two similar sets of chromosomes--that undergoes meiosis to produce cells called spores. Each spore divides forming a single set of chromosomes (haploid) --the gametophyte--which produces the sperm and egg cells.

Evans studies how the haploid genome is required for normal egg and sperm function. In flowering plants, the female gametophyte, called the embryo sac, consists of four cell types: the egg cell, the central cell, and two types of