Plant biology Content

Christmas Trees’ Distinctive Aroma Helps Ward off Pathogens and Pests

Andy Fell — November 25, 2024 - 8:30am

Each year, nearly 30 million Americans purchase a real tree for the holidays. Growing the perfect Christmas tree takes about seven years, during which farmers need to keep insects, fungal pathogens and hungry deer at bay. While researchers suspect the distinctive piney smell the trees emit plays a role in deterring these pests, not all trees smell the same, and which chemical blends confer resistance is unclear.

Making High-yielding Rice Affordable and Sustainable

Andy Fell — November 20, 2024 - 10:53am

Rice is a staple food crop for more than half the world’s population, but most farmers don’t grow high-yielding varieties because the seeds are too expensive. Researchers from the University of California’s Davis and Berkeley campuses have identified a potential solution: activating two genes in rice egg cells that trigger their development into embryos without the need for fertilization, which would efficiently create high-yielding clonal strains of rice and other crops.

How Plants Become Bushy, or Not

Andy Fell — August 06, 2024 - 3:50pm

For many plants, more branches means more fruit. But what causes a plant to grow branches? New research from the University of California, Davis shows how plants break down the hormone strigolactone, which suppresses branching, to become more “bushy.” Understanding how strigolactone is regulated could have big implications for many crop plants.

The study was published August 1 in Nature Communications.

Plant Biologist Siobhan Brady Named HHMI Investigator

Andy Fell — July 23, 2024 - 12:11pm

Siobhan Brady, a professor in the Department of Plant Biology and Genome Center at the University of California, Davis, has been selected as a Howard Hughes Medical Institute (HHMI) Investigator. The prestigious Investigator program, which Brady describes as “life changing,” will provide her with roughly $9 million in research support over a seven-year term, with the option to renew.

Plant Biologist Venkatesan Sundaresan Wins 2024 Wolf Prize in Agriculture

Andy Fell — July 17, 2024 - 9:36am

Venkatesan Sundaresan, Distinguished Professor in the Departments of Plant Biology and Plant Sciences at the University of California, Davis, has been awarded a 2024 Wolf Prize in Agriculture for key discoveries on plant developmental biology of relevance to crop improvement.

How Plants Sense Scent

Andy Fell — April 25, 2024 - 4:10pm

Plants need to be able to communicate with themselves, for example sending signals from their leaves to their roots or flowers, so that they can coordinate growth and optimize resource use. They also need to communicate with other plants and organisms, which they achieve by releasing volatile organic compounds (VOCs), tiny molecules that are often associated with distinct smells. Scientists know a lot about how plants emit these odorous signals, however very little is known about how they receive and interpret them.

Researchers Identify Microbes That Help Plants Thwart Parasite

Andy Fell — March 26, 2024 - 10:53am

Bacteria that could help one of Africa’s staple crops resist a major pest have been identified by researchers at the University of California, Davis. Their findings, published March 26 in Cell Reports, could improve yields of sorghum, a mainstay of food and drink in West and East African countries.

Plant Biologists Identify Promising New Fungicides

Andy Fell — February 29, 2024 - 9:00am

A promising new fungicide to fight devastating crop diseases has been identified by researchers at the University of California, Davis. The chemical, ebselen, prevented fungal infections in apples, grapes, strawberries, tomatoes and roses, and improved symptoms of pre-existing fungal infection in rice.

How Tomato Plants Use Their Roots to Ration Water During Drought

Andy Fell — January 02, 2024 - 11:32am

Plants have to be flexible to survive environmental changes, and the adaptive methods they deploy must often be as changeable as the shifts in climate and condition to which they adapt. To cope with drought, plant roots produce a water-repellent polymer called suberin that blocks water from flowing up towards the leaves, where it would quickly evaporate. Without suberin, the resulting water loss would be like leaving the tap running.

A Mixed Origin Made Maize Successful

Andy Fell — November 30, 2023 - 11:00am

Maize is one of the world’s most widely grown crops. It is used for both human and animal foods and holds great cultural significance, especially for Indigenous peoples in the Americas. Yet despite its importance, the origins of the grain have been hotly debated for more than a century. Now new research, published Dec. 1 in Science, shows that all modern maize descends from a hybrid created just over 5,000 years ago in central Mexico, thousands of years after the plant was first domesticated.