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Stanford, CA— With a growing world population and a changing climate, understanding how agriculturally important plants respond to drought is crucial. New work from a team led by Carnegie...
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Stanford, CA— Plants have tiny pores on their leaves called stomata—Greek for mouths—through which they take in carbon dioxide from the air and from which water evaporates. New work...
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Stanford, CA— Algae may hold the key to feeding the world’s burgeoning population. Don’t worry; no one is going to make you eat them. But because they are more efficient than most...
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Stanford, CA— Four additional members of Stanford University’s faculty have been named Honorary Adjunct Staff Scientists at Carnegie’s Department of Plant Biology. Stanford’s...
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Stanford, CA— You’ve probably seen news stories about the highly lauded, much-discussed genome editing system CRISPR/Cas9. But did you know the system was actually derived from bacteria,...
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Stanford, CA— During the daytime, plants convert the Sun’s energy into sugars using photosynthesis, a complex, multi-stage biochemical process. New work from a team including Carnegie...
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Washington, DC— More than 1,000 scientists from nonprofit, corporate, academic, and private institutions say public doubts about genetically modified food crops are hindering the next Green...
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Stanford, CA—Carnegie’s Alexander Jones will receive the Tansley Medal for Excellence in Plant Science. The honor includes publishing a short review, an editorial written about his work...
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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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Evolutionary geneticist Moises Exposito-Alonso joined the Department of Plant Biology as a staff associate in September 2019. He investigates whether and how plants will evolve to keep pace with climate change by conducting large-scale ecological and genome sequencing experiments. He also...
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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%...
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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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Audio Stanford, CA— As every gardner knows, nitrogen is crucial for a plant’s growth. But nitrogen absorption is inefficient. This means that on the scale of food crops, adding significant levels of...
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Stanford, CA —Light is not only the source of a plant’s energy, but also an environmental signal that instructs the growth behavior of plants. As a result, a plant’s sensitivity to light is of great...
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During the daytime, plants convert the Sun’s energy into sugars using photosynthesis, a complex, multi-stage biochemical process. New work from a team including Carnegie’s Mark Heinnickel...
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Margaret McFall-Ngai
November 17, 2021

Washington, DC—Pioneering microbiome specialist Margaret McFall-Ngai has been named the inaugural director of Carnegie’s newly launched research division focused on life and environmental sciences, which will deploy an integrated, molecular-to-global approach to tackling the challenges of sustainability, resilience, and adaptation to a changing climate. McFall-Ngai will join the institution in January, 2022, from the University of Hawai‘i at Mānoa, where she is a professor at the Pacific Biosciences Research Center’s Kewalo Marine Laboratory and the center’s director emerita.

“Margaret’s exemplary research and groundbreaking vision are the

Rose rust on plant leaves. Image purchased from Shutterstock.
October 26, 2021

Palo Alto, CA—New work led by Carnegie’s Kangmei Zhao and Sue Rhee reveals a new mechanism by which plants are able to rapidly activate defenses against bacterial infections. This understanding could inspire efforts to improve crop yields and combat global hunger.

“Understanding how plants respond to stressful environments is critical for developing strategies to protect important food and biofuel crops from a changing climate,” Rhee explained. 

Published in eLife, new work from Zhao and Rhee, along with Carnegie’s Benjamin Jin and Stanford University’s Deze Kong and Christina Smolke, investigated how production of a plant defense

October 4, 2021

Palo Alto, CA—Carnegie’s Devaki Bhaya is part of a Rice University led team that was recently awarded $2.8 million from the National Science Foundation for a five-year project to define the social order of naturally occurring microbial communities.

Unlike the bacterial clones used in laboratory research, naturally occurring bacterial populations are havens of small-scale genetic diversity, making their relationships and evolutionary dynamics of great interest to the scientific community.

“From extremophiles living in deep sea vents to the beneficial bacteria living in the human gut or in association with plant roots, microbial communities are crucial to

September 24, 2021

Palo Alto, CA—Former Carnegie Staff Associate Martin Jonikas, now an Associate Professor of Molecular Biology at Princeton University, was named one of 33 new Howard Hughes Medical Institute (HHMI) Investigators. HHMI recognized Jonikas for his research on photosynthetic algae, which could revolutionize agriculture and biofuels by making crop plants better at converting carbon dioxide from the atmosphere into usable energy sources such as sugars.

Each member of the cohort will receive roughly $9 million over a seven-year term. They were selected for “diving deep into tough questions that span the landscape of biology and medicine.”

Photosynthesis 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. Now that many genomes from algae to mosses and trees are publicly available, this information can be mined using bioinformatics to build models to understand gene function and ultimately for designing plants for a wide spectrum of applications.

 Carnegie researchers have pioneered a genome-wide gene association network Aranet that can assign functions

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

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

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