Navigation Links
First-of-its-kind fluorescence map offers a new view of the world's land plants
Date:6/6/2011

Scientists from NASA's Goddard Space Flight Center in Greenbelt, Md., have produced groundbreaking global maps of land plant fluorescence, a difficult-to-detect reddish glow that leaves emit as a byproduct of photosynthesis. While researchers have previously mapped how ocean-dwelling phytoplankton fluoresce, the new maps are the first to focus on land vegetation and to cover the entire globe.

To date, most satellite-derived information related to the health of vegetation has come from "greenness" indicators based on reflected rather than fluorescent light. Greenness typically decreases in the wake of droughts, frosts, or other events that limit photosynthesis and cause green leaves to die and change color.

However, there is a lag between what happens on the ground and what satellites can detect. It can take days --- even weeks -- before changes in greenness are apparent to satellites.

Chlorophyll fluorescence offers a more direct window into the inner workings of the photosynthetic machinery of plants from space. "With chlorophyll fluorescence, we should be able to tell immediately if plants are under environmental stress -- before outward signs of browning or yellowing of leaves become visible," said Elizabeth Middleton, a NASA Goddard-based biologist and a member of the team that created the maps.

The new maps, based on data collected in 2009 from a spectrometer aboard a Japanese satellite called the Greenhouse Gases Observing Satellite (GOSAT), show sharp contrasts in plant fluorescence between seasons. In the Northern Hemisphere, for example, fluorescence production peaked during July, while in the Southern Hemisphere it did in December.

The new findings help confirm previous lab and field experiments that suggest chlorophyll fluorescence should taper off in the fall as the abundance of green foliage declines and stress increases as a result of lower temperatures and less favorable light conditions.

'/>"/>
Contact: Adam Voiland
adam.p.voiland@nasa.gov
301-614-6949
NASA/Goddard Space Flight Center
Source:Eurekalert  

0

GOOD

Page: 1 2 3 4

Related biology news :

1. American Sociological Association launches first-of-its-kind teaching tool
2. First-of-its-kind map details the height of the globes forests
3. First-of-its-kind study shows benefits of electrical stimulation therapy for people paralyzed by spinal cord injury
4. Pitt researchers use fluorescence to develop method for detecting mercury in fish
5. Novel technique for fluorescence tomography of tumors in living animals
6. Fluorescence monitoring and effect of photodynamic therapy for port wine stains
7. Worm genome offers clues to evolution of parasitism
8. Advance offers revolution in food safety testing
9. Light pollution offers new global measure of coral reef health
10. Rong Li Lab offers insight into adaptive ability of cells
11. International public-private partnership offers new paradigm for medicinal chemistry
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
First-of-its-kind fluorescence map offers a new view of the world's land plants
(Date:5/24/2013)... In recent years, microRNAs (miRNAs) and other non-coding ... expression of specific proteins. In recent years they ... been used to establish tissue origin for cancers ... responses and screen for disease, but clinically tractable, ... samples are not currently available. In this issue ...
(Date:5/23/2013)... , Automated conserved noncoding sequence (CNS) discovery reveals ... , Within the genome of each species, there ... change in position and sequence over millions of years, ... these evolutionarily stable sequences, so-called conserved noncoding sequences (CNSs), ... or the condensation of chromosomes, but the function of ...
(Date:5/23/2013)... School of Public Health at Emory University, along ... have received a $4 million grant over four ... University (Health and Exposome Research Center: Understanding Lifetime ... grant awarded in the United States. , ... Institute of Environmental Health Sciences (NIEHS) of the ...
Breaking Biology News(10 mins):Frontiers news briefs: May 23 2Frontiers news briefs: May 23 3Emory, Georgia Tech receive first human exposome center grant in US 2Emory, Georgia Tech receive first human exposome center grant in US 3
... primary bacteria behind tuberculosis can grow on surfaces ... communities, the research team recently reported in ... reason why human tuberculosis (TB) requires months of ... of the relapses that can nonetheless occur. ...
... mineral is abundant in desert regions where fresh water is ... are common. Writing in International Journal of Global Environmental ... Team, in Rotterdam, The Netherlands, has hit on the idea ... to release the water locked in gypsum. Fresh water ...
... 10, 2008 the scientific journal " Vaccine " published a ... demonstrating that a protein sequence important in neurodegenerative Huntington,s disease ... adjuvants. The major component of every vaccine is ... bacteria or even cancer cells. Search for better antigens ...
Cached Biology News:Source of drug-tolerant tuberculosis possibly behind TB relapses, intensity of treatment 2Rocky water source 2A protein sequence associated with Huntington’s disease may become life-saving vaccine component 2
(Date:5/24/2013)... (PRWEB) May 24, 2013 Many factors ... and uptake or efflux transporters at the blood-tissue barrier. ... related to unbound fractions in the tissue rather than ... these disposition challenges is required to guide lead optimization, ... identify any species-dependent variables that may impact the likely ...
(Date:5/23/2013)... CAMBRIDGE, England , May 24, 2013 ... von Mundipharma angefertigt – Bei der ... Version , 91 % der Teilnehmer einer ... obwohl nur 20 % laut GINA [*] -Definition [1] ... zeigt, dass Menschen mit Asthma generell einer von vier ...
(Date:5/23/2013)... Can economic incentives such as gift ... of the public to increase their donations of blood? ... Carey Business School Assistant Professor Mario Macis says ... large body of recent research that supports their argument, ... issue of Science that the World Health Organization and ...
(Date:5/23/2013)... Ind. , May 23, 2013  Rahal Letterman ... in human cord blood stem cell banking and therapeutics, ... of the No. 16 Acorn Stairlifts Indy car driven ... for the remainder of the IZOD IndyCar 2013 season. ... (RLL) will work to support awareness of umbilical cord ...
Breaking Biology Technology:DMPK for Targeted Tissue Delivery: Solutions for the Most Challenging Part of Outsourcing, New Life Science Webinar Hosted by Xtalks 2Neue Forschungsergebnisse zeigen Verbindung zwischen suboptimaler Asthmaversorgung und Patienteneinstellungen in Europa auf 2Neue Forschungsergebnisse zeigen Verbindung zwischen suboptimaler Asthmaversorgung und Patienteneinstellungen in Europa auf 3Neue Forschungsergebnisse zeigen Verbindung zwischen suboptimaler Asthmaversorgung und Patienteneinstellungen in Europa auf 4Neue Forschungsergebnisse zeigen Verbindung zwischen suboptimaler Asthmaversorgung und Patienteneinstellungen in Europa auf 5Neue Forschungsergebnisse zeigen Verbindung zwischen suboptimaler Asthmaversorgung und Patienteneinstellungen in Europa auf 6Neue Forschungsergebnisse zeigen Verbindung zwischen suboptimaler Asthmaversorgung und Patienteneinstellungen in Europa auf 7Offering Economic Incentives to Attract Blood Donations Should Be Encouraged, Research Team writes in Science 2Offering Economic Incentives to Attract Blood Donations Should Be Encouraged, Research Team writes in Science 3StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 2StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 3
... that makes you smile, and wish youd been in that basement ... games, has come from two brothers working on a game on ... in the nation. Now with 95 employees and numerous hit games, ... ,Brian and Steve Raffel, brothers who had backgrounds in art, decided ...
... looking up in our Midwest tech economy? Headhunters are a little ... interesting. Hiring managers are still deluged with inquiries from job seekers ... , ,What if one of your irons in the fire gets ... after that long dry spell! Lets say you get a job ...
... Protect Against Wireless Hacking and Rogue Access Point ... the information technology industry's first comprehensive intrusion detection ... breaches on wireless local area networks. , ... security service that melds IBM Global Services' security ...
Cached Biology Technology:Its All Fun And Games in Madison - Raven Software Celebrates 15 Anniversary 2Its All Fun And Games in Madison - Raven Software Celebrates 15 Anniversary 3How to Quit Your Midwest Technology Job 2How to Quit Your Midwest Technology Job 3How to Quit Your Midwest Technology Job 4IBM Develops Wireless Security Service 2
... Basic Package Superior Protein Detection and ... ProXPRESS 2D Proteomic Imaging System is a ... proteomic and general life science research applications. ... use of all dyes in the UV ...
... extended-length microarrays are custom designed to meet ... are available: 8,455 features per array (2 ... features per array (1 array/slide). ... length - This extended length delivers ...
... for pathway studies, protein-protein interaction studies, ... built on the flexible and powerful ... microarrays are available as part of ... Custom Probe Content ...
... normal Mega Western Protein Array was developed ... Western Protein Arrays are manufactured using high ... sources. A protein sample from each of ... a Protein molecular weight marker on a ...
Biology Products: