Navigation Links
Dartmouth-led team discovers how plants avoid sunburn
Date:8/6/2013

A Dartmouth-led team has discovered a group of stress-related proteins that explains how plants avoid sunburn in intense light, a finding that one day could help biotechnologists to develop crops that can better cope with hotter, drier conditions occurring in climate change.

Their findings appear this week in the journal PNAS. The study, titled "Subset of heat-shock transcription factors required for the early response of Arabidopsis to excess light," was led by researchers from Dartmouth, the Salk Institute for Biological Studies and Australian National University.

Too much or too little sunlight or rapidly fluctuating light conditions cause stress to plants, which have sophisticated control systems to utilize light energy for photosynthesis and simultaneously protect themselves from sunburn from very bright sunlight. Plants perform these regulations mainly by regulating nuclear gene expression and multiple intracellular signaling pathways have been shown to play a role in the genomic response of plants to stress, but the processes are not well understood.

In this study, Professor Hou-Sung Jung and his colleagues showed that a group of transcription factors called Heat Shock Transcription Factors are responsible for fast responses of plants to changes in light intensity -- from light conditions that are optimal for photosynthesis to bright light that causes sunburn. The transcription factors, which are proteins that control the flow of genetic information, generate an enzyme responsible for detoxifying harmful molecules, which accumulate under very bright light.

Currently in his laboratory, Jung is characterizing factors involved in plants' responses to prolonged bright light. Studying these short-term and long-term response factors may make it possible to generate plants with increased protection from bright light with enhanced photosynthesis rates.


'/>"/>

Contact: John Cramer
john.d.cramer@dartmouth.edu
603-646-9130
Dartmouth College
Source:Eurekalert

Related biology news :

1. Mercury releases contaminate ocean fish: Dartmouth-led effort publishes major findings
2. Team discovers how bacteria resist a Trojan horse antibiotic
3. Study discovers genetic pathway impacting the spread of cancer cells
4. NOAA discovers way to detect low-level exposure to seafood toxin in marine animals
5. New study discovers powerful function of single protein that controls neurotransmission
6. La Jolla Institute scientist discovers key step in immune system-fueled inflammation
7. NUS-led research team discovers how bacteria sense salt stress
8. Team discovers how western corn rootworm resists crop rotation
9. Team discovers reason that male moths can keep finding females
10. Study in mice discovers injection of heat-generating cells reduces belly fat
11. CSHL-led team discovers new way in which plants control flower production
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/20/2016)... -- Securus Technologies, a leading provider of civil ... investigation, corrections and monitoring announced that after exhaustive ... the final acceptance by all three (3) Department ... (MAS) installed. Furthermore, Securus will have contracts for ... October, 2016. MAS distinguishes between legitimate wireless device ...
(Date:6/9/2016)... June 9, 2016 Paris ... Teleste,s video security solution to ensure the safety of people ... during the major tournament Teleste, an international ... and services, announced today that its video security solution will ... to back up public safety across the country. The system ...
(Date:6/2/2016)... , June 2, 2016   The Weather Company , ... Watson Ads, an industry-first capability in which consumers will be ... able to ask questions via voice or text and receive ... Marketers have long sought an advertising ... that can be personal, relevant and valuable; and can scale ...
Breaking Biology News(10 mins):
(Date:12/5/2016)... December 5, 2016 According ... Market, by Products (Consumable, Instruments, Automated Cell Expansion ... and Stem Cell Research, Cancer, and Cell-Based Research), ... Banks) - Global Revenue, Trends, Growth, Share, Size ... Research, the global cell expansion market is expected ...
(Date:12/5/2016)... Mich. , Dec. 5, 2016 NxGen MDx announced today ... bringing the test in house, we,ve been able to improve customer service ... for patients," says Alan Mack , CEO of NxGen MDx. ... , , ... test volume has led to more job opportunities at the Grand Rapid ...
(Date:12/5/2016)... , December 5, 2016 The ... with almost $108 billion of revenue and some $890 ... were spent on global biopharmaceuticals, and this figure is ... Stock-Callers.com has lined up these four equities for assessment: ... Pharmaceuticals Inc. (NASDAQ: ACAD ), Acorda Therapeutics ...
(Date:12/4/2016)... , Dec. 3, 2016  In five studies ... Hematology (ASH) Annual Meeting and Exposition in ... engineering methods to improve the delivery of life-saving treatments ... new methods are designed to carry therapies directly to ... most, which could provide a substantial advantage over traditional, ...
Breaking Biology Technology: