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Scientists uncover molecular mechanism linking water-saving irrigation to cadmium accumulation in rice

A study by Chinese Academy of Sciences researchers identified a conserved molecular cascade that explains how drought and abscisic acid signaling trigger excessive Cd uptake in rice under water-saving regimes. The OsNAC4 transcription factor regulates grain Cd accumulation, and its functional knockout reduces Cd concentrations by 30-50...

SourceChinese Academy of Sciences Headquarters·JournalCurrent Biology·TypeExperimental study·DateJul 13, 2026

Decoding how plants survive drought

Researchers discovered that ABA inhibits stomatal production by phosphorylating the master regulator SPEECHLESS, reducing its levels and leading to decreased stomatal number. This finding could lead to fine-tuning crop plants' drought tolerance through targeted manipulation of the underlying 'code'.

SourceNational University of Singapore·JournalScience Advances·TypeExperimental study·DateOct 10, 2022

Tel Aviv University researchers have discovered a mechanism that helps plants cope with water shortages

Researchers at Tel Aviv University discovered a central mechanism in plants that helps them deal with drought conditions and water shortages. They found that the ABA signal molecule is stored in inactive state in leaves and released under desired conditions, allowing plants to rapidly respond to changing environmental conditions.

SourceTel-Aviv University·JournalScience Advances·DateNov 2, 2021

How do plants hedge their bets?

Researchers found that genetically identical seeds can have varying germination times due to the ABA-GA network, which allows for a 'bistable switch' behavior. This variability in germination time can be beneficial for plants growing in unpredictable environments, such as agriculture and natural areas.

How plants measure their carbon dioxide uptake

In a balancing act between drying out and starving in dry conditions, plants use an elaborate network of sensors to regulate their carbon dioxide uptake. The study reveals that guard cells have sensors for CO2 and ABA, allowing them to measure photosynthesis and water supply, and adjust the stomata accordingly.

SourceUniversity of Würzburg·JournalNature Plants·DateAug 26, 2019

News about a plant hormone

Scientists have found that jasmonic acid triggers the quick closure of stomata, a crucial mechanism for plants to conserve water during drought stress. The discovery also reveals a molecular crosstalk between jasmonic acid and abscisic acid, two key plant hormones involved in regulating stomatal conductance.

SourceUniversity of Würzburg·JournalDevelopmental Cell·DateDec 7, 2018

Removing barriers to early intervention for autistic children: A new model shows promise

In South Carolina, a two-tiered screening process identified children with autism spectrum disorder eligible for early intensive behavioral therapy, leading to a significant increase in treatment. This policy change demonstrates the importance of early intervention in improving social interaction and communication among children with ASD.

ABA: Evolution of a plant hormone

Researchers found that the plant hormone ABA did not yet regulate water balance in early land plants like ferns. Instead, it played a key role in sex determination. The study suggests that the evolution of ABA's function changed as plants transitioned to flowering plants.

SourceUniversity of Würzburg·JournalProceedings of the National Academy of Sciences·DateOct 27, 2016

Scientists trace plant hormone pathway back 450 million years

Researchers discovered that abscisic acid (ABA) promotes femaleness in ferns, which is linked to spore dormancy. ABA also plays a key role in regulating stomate function in flowering plants, allowing them to conserve water during drought. This study sheds light on the evolution of plant hormones and their roles in ancient species.

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateOct 24, 2016

Overlooked plants defy drought

Scientists have discovered that certain plants resistant to a hormone called abscisic acid (ABA) can grow better than normal neighbors during droughts. ABA-resistant varieties may hold the key to breeding 'stay green' traits in crops, which could help them retain their leaves and continue to produce food and other essential resources.

SourceeLife·DateOct 4, 2016

Fighting rice fungus

A study published by University of Delaware plant scientists has identified a stress hormone that appears to increase the virulence of the rice blast fungus. The research may lead to new control methods for the devastating disease.

SourceUniversity of Delaware·JournalFrontiers in Plant Science·DateDec 22, 2015

Four fairies watch over Sleeping Beauty

Researchers discovered a network of transporters involved in controlling hormone ABA transport to seed embryos, ensuring optimal germination timing. This knowledge can be integrated into breeding programs to prevent premature germination and reduce economic losses.

SourceUniversité de Genève·JournalNature Communications·DateSep 3, 2015

Drought hormones measured

Researchers at Carnegie Institution have developed a new method to measure abscisic acid levels in individual plant cells, shedding light on the hormone's role in plant stress responses. This breakthrough tool has the potential to improve crop yields and inform strategies for mitigating the impacts of drought and climate change.

Botanical compound could prove crucial to healing influenza

Researchers at Virginia Tech have discovered that abscisic acid has anti-inflammatory effects in both the lungs and gut, which could lead to a novel way to combat inflammatory disease. This compound may offer a safer alternative to existing treatments for influenza by targeting the immune response rather than the virus itself.

SourceVirginia Tech·JournalThe Journal of Nutritional Biochemistry·DateJul 18, 2012

Researchers discover how natural drug fights inflammation

Scientists at Virginia Tech uncover how abscisic acid, a natural plant hormone, fights inflammation by interacting with the lanthionine synthetase C-like 2 protein. This alternative mechanism avoids known adverse side effects of existing drugs, paving the way for new treatments.

SourceVirginia Tech·JournalJournal of Biological Chemistry·DateDec 9, 2010

Drought resistance explained

Scientists discovered how plant hormone ABA interacts with protein PYR1 to trigger drought response. This interaction enables PP2C molecules to be hijacked, allowing plants to increase water uptake and storage while decreasing water loss. The study offers new approaches for increasing crop tolerance to water shortages.

Research reveals how cells protect against stress

Scientists have discovered a chain of cellular events that occurs in plant cells when exposed to environmental stress, ultimately leading to the production of protective proteins. The research, led by Sarah M. Assmann, found that a hormone called abscisic acid regulates the processing of RNA molecules involved in stress response.

SourcePenn State·JournalNature·DateAug 14, 2002