Science News magazine has selected José Dinneny, of Carnegie’s Department of Plant Biology, as one of ten young scientists to watch in 2017. The researchers were selected because they are likely to...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Donald Danforth Plant Science Center
Stanford, CA— Carnegie Plant Biology Acting Director Sue Rhee and staff scientist...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Max Planck Institute of Biochemistry
Stanford, CA— How do green algae grow so quickly?  Two new collaborations offer insight into how these organisms siphon carbon dioxide from the air for use in photosynthesis, a key factor in their...
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Palo Alto, CA— The red algae called Porphyra and its ancestors have thrived for millions of years in the harsh habitat of the intertidal zone—exposed to fluctuating temperatures, high UV radiation,...
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Palo Alto, CA— Algae dominate the oceans that cover nearly three-quarters of our planet, and produce half of the oxygen that we breathe. And yet fewer than 10 percent of the algae have been formally...
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Pew announced the 2017 classes of biomedical scholars, Latin American fellows, and Pew-Stewart Scholars for Cancer Research today. Cesar-Cuevas Velazquez of the Department of Plant Biology Dinneny...
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Stanford, CA—Plants are stationary. This means that the way they grow must be highly internally regulated to use the surrounding resources in the most-advantageous way possible. Just imagine if you...
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Washington, D.C.--Plant Biology postdoctoral research associate since 2012, Jia-Ying Zhu was awarded the sixth PIE award for her creativity, productivity, being a great team player in research, “and...
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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 (...
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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...
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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 Chlamydomonas reinhardtii....
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Plants are essential to life on Earth and provide us with food, fuel, clothing, and shelter.  Despite all this, we know very little about how they do what they do. Even for the best-studied species, such as Arabidopsis thaliana --a wild mustard studied in the lab--we know about less than 20% of...
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It’s common knowledge that light is essential for plants to perform photosynthesis—converting light energy into chemical energy by transforming carbon dioxide and water into sugars for fuel. Plants maximize the process by bending toward the light in a process called phototropism, which is...
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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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Stanford, CA— Plant's leaves are sealed with a gas-tight wax layer to prevent water loss. Plants breathe through microscopic pores called stomata (Greek for mouths) on the surfaces of leaves. Over 40...
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Stanford, CA—Photosynthesis is probably the most well-known aspect of plant biochemistry. It enables plants, algae, and select bacteria to transform the energy from sunlight during the daytime into...
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Washington, DC—The Carnegie Institution announced today that it is a grant recipient of the Grand Challenges Explorations initiative funded by the Bill & Melinda Gates Foundation. Wolf B. Frommer...
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October 4, 2017

Science News magazine has selected José Dinneny, of Carnegie’s Department of Plant Biology, as one of ten young scientists to watch in 2017. The researchers were selected because they are likely to make big discoveries. The investigators are spotlighted in the October 14 edition of Science News available online today at www.sciencenews.org/SN10.

Dinneny looks at the mechanisms plants use to sense water availability and survive stressful conditions such as drought and high salinity. He investigates developmental pathways and molecular genetic mechanisms involved in shaping the plant to suit the environment. His work has included the processes of water-stress responses in plants at

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Donald Danforth Plant Science Center
October 2, 2017

Stanford, CA— Carnegie Plant Biology Acting Director Sue Rhee and staff scientist José Dinneny and their labs are part of a research effort led by The Donald Danforth Plant Science Center, one of the world’s largest independent plant science institutes, which today announced a 5-year, $16 million grant from the U.S. Department of Energy.

Building on earlier research using the often-studied model grass called green foxtail (Setaria viridis), this project will identify new genes and pathways that contribute to photosynthesis and enhanced water-use efficiency. The team will then deploy these genes using tools from the emerging field of synthetic biology to accelerate development of

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Max Planck Institute of Biochemistry
September 21, 2017

Stanford, CA— How do green algae grow so quickly?  Two new collaborations offer insight into how these organisms siphon carbon dioxide from the air for use in photosynthesis, a key factor in their ability to rapidly take over a swimming pool or pond. Understanding this process may someday help researchers improve the growth rate of agricultural crops such as wheat and rice.

In two studies published this week in the journal Cell, a Princeton-led team with collaborators from Carnegie and the Max Planck Institute of Biochemistry reported the first detailed inventory of the cellular compartment called the pyrenoid, which algae use to collect and concentrate carbon dioxide, making the

Carnegie Science, Carnegie Institution, Carnegie Institution for Science,
July 17, 2017

Palo Alto, CA— The red algae called Porphyra and its ancestors have thrived for millions of years in the harsh habitat of the intertidal zone—exposed to fluctuating temperatures, high UV radiation, severe salt stress, and desiccation.

Red algae comprise some of the oldest non-bacterial photosynthetic organisms on Earth, and one of the most-ancient of all multicellular lineages. They are also fundamentally integrated into human culture and economics around the globe. Some red algae play a major role in building coral reefs while others serve as “seaweed” foods that are integral to various societies. Porphyra is included in salads (as are related genera of algae), is called “nori”

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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

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

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 achieve broad, durable

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 sugar

Steroids are important hormones in both animals and plants. They bulk up plants just as they do human athletes, but the pathway of molecular signals that tell the genes to boost growth and development is more complex in plant cells than in animal cells. Unlike animals, plants do not have glands to produce and secrete hormones. Rather, each plant cell has the ability to generate hormones. Another difference is that animal cells typically have receptor molecules that respond to select steroids located within a cell's nucleus. In plants, steroid receptors are anchored to the outside surface of a cell’s outer membrane—the membrane that delineates a cell as a single unit.

Zhiyong Wang

Understanding how plants grow can lead to improving crops.  Plant scientist Kathryn Barton, who joined Carnegie in 2001, investigates just that: what controls the plant’s body plan, from  the time it’s an embryo to its adult leaves. These processes include how plant parts form different orientations, from top to bottom, and different poles. She looks at regulation by small RNA’s, the function of small so-called Zipper proteins, and how hormone biosynthesis and response controls the plant’s growth.

Despite an enormous variety in leaf shape and arrangement, the basic body plan of plants is about the same: stems and leaves alternate in repeating units. The structure responsible for

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 for

It’s common knowledge that light is essential for plants to perform photosynthesis—converting light energy into chemical energy by transforming carbon dioxide and water into sugars for fuel. Plants maximize the process by bending toward the light in a process called phototropism, which is particularly important for germinated seedlings to maximize light capture for growth. Winslow Briggs has been a worldwide leader in unraveling the molecular mechanisms behind this essential plant process.

Over a decade ago Briggs and colleagues discovered and first characterized the photoreceptor family that mediates this directional response and named the two members phototropin 1 and