Navigation Links
Why some grasses evolved a more efficient photosynthesis and others didn't
Date:12/24/2012

PROVIDENCE, R.I. [Brown University] Even on the evolutionary time scale of tens of millions of years there is such a thing as being in the right shape at the right time. An anatomical difference in the ability to seize the moment, according to a study led by Brown University biologists, explains why more species in one broad group, or clade, of grasses evolved a more efficient means of photosynthesis than species in another clade did.

Their findings appear this week in the Proceedings of the National Academy of Sciences.

Biologists refer to the grasses that have evolved this better means of making their food in warm, sunny and dry conditions with the designation "C4." Grasses without that trait are labeled "C3."

What scientists had already known is that while all of the grasses in the BEP and PACMAD clades have the basic metabolic infrastructure to become C4 grasses, the species that have actually done so are entirely in the PACMAD clade. A four-nation group of scientists wondered why that disparity exists.

To find out, Brown postdoctoral researcher and lead author Pascal-Antoine Christin spent two years closely examining the cellular anatomy of 157 living species of BEP and PACMAD grasses. Using genetic data the team also organized the species into their evolutionary tree, which they then used to infer the anatomical traits of ancestral grasses that no longer exist today, a common analytical technique known as ancestral state reconstruction. That allowed them to consider how anatomical differences likely evolved among species over time.

Paradoxically, to understand C4 evolution, the researchers focused on the anatomy of C3 grasses in each clade.

In general what they found was that in the leaves of many PACMAD C3 grasses the veins were closer together, and that the veins themselves were surrounded by larger cells ("bundle sheath" cells) than in BEP C3 grasses. Ultimately PACMAD grasses had a high
'/>"/>

Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Seagrasses can store as much carbon as forests
2. Gases from grasses
3. Leading evolutionary scientist to discuss how genome of bacteria has evolved
4. Excessive worrying may have co-evolved with intelligence
5. Out of the mouths of primates, facial mechanics of human speech may have evolved
6. Ion selectivity in neuronal signaling channels evolved twice in animals
7. Menopause evolved to prevent competition between in-laws
8. A clearer picture of how assassin bugs evolved
9. New study sheds light on how and when vision evolved
10. Computer model pinpoints prime materials for efficient carbon capture
11. How bumblebees find efficient routes without a GPS
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Why some grasses evolved a more efficient photosynthesis and others didn't
(Date:3/24/2015)... DUBLIN , Mar. 24, 2015 Research and Markets ... "Face and Voice Biometrics - Global Strategic Business Report" report ... for Face and Voice Biometrics in US$ Thousands by the following ... analytics for the US, Canada , ... , Middle East & ...
(Date:3/24/2015)... March 24, 2015   Crossmatch ™, a ... announced that its U.are.U ® 4500 Fingerprint ... Goorin Bros . to achieve PCI compliance for ... access to the POS terminal, protecting the retailer ... data breaches. With one-third of ...
(Date:3/23/2015)...   HOYOS Labs , a leading global authentication ... the Company will demonstrate multiple biometrics-based technologies under its ... Connect:ID on March 23 through 25, 2015, in ... the IEEE Biometric Open Protocol Standard; free biometrics-based consumer ... control system. BOPS was invented by HOYOS Labs and ...
Breaking Biology News(10 mins):Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... of Education and Human Development,s Department of Health and Kinesiology, ... Texas Chapter of the American College of Sports Medicine (ACSM),s ... will deliver lectures at a series of Texas educational institutions ... big honor for both Bill and our department," said Wan ...
... a previously unknown structure in between a liquid and ... long oily chains, according to Purdue University researchers. However, ... Water plays a huge role in biological processes, from ... that this transformation is useful in a way not ...
... LLC, creator of the Selman Surgical Rehearsal Platform (SRP), ... to University Hospitals (UH) Case Medical Center in Cleveland, ... Physicians at the medical center have been instrumental in ... that the institution becomes the first to own the ...
Cached Biology News:UTSA physiologist William Cooke named 2013 Lecture Series Speaker by Texas Sports Medicine Chapter 2Oil and water: An icy interaction when oil chains are short, but steamy when chains are long 2Oil and water: An icy interaction when oil chains are short, but steamy when chains are long 3Surgical Theater, LLC sells first Surgical Rehearsal Platform to UH Case Medical Center 2Surgical Theater, LLC sells first Surgical Rehearsal Platform to UH Case Medical Center 3
(Date:4/23/2015)... , April 23, 2015 BioTE Medical ... his book "Age Healthier Live Happier - Avoiding Over-Medication ... the Age Management Medicine Group Conference at JW Marriott ... 2015. ",Age Healthier Live Happier, is a ... avoid over-medication and searching for a higher quality of ...
(Date:4/23/2015)... 23, 2015 Follow us ... a series of genetic tests that determine individual ... Gehrig's disease, Huntington's disease, and Alzheimer's disease. Predictive ... composition and interaction in diseased tissue/cells to understand ... as the response to treatment, such as in ...
(Date:4/23/2015)... 23, 2015 Glemser Technologies ... first EMC® Enterprise Content Division (ECD) Certified Solution ... EMC Documentum® for Life Sciences Solution Suite . ... and capabilities to provide life sciences companies of ... , The EMC Documentum Solution Suite offers four ...
(Date:4/23/2015)... 23, 2015 /PRNewswire/ - Crystal Research Associates, LLC announced ... ® (EIO) on Aeterna Zentaris Inc. (NASDAQ: ... on Crystal Research Associates, website at www.crystalra.com ... at www.aezsinc.com . Aeterna Zentaris ("Aeterna" ... company in oncology, endocrinology, and women,s health. With a ...
Breaking Biology Technology:Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 3Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 2Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 3Glemser Earns Accreditation for Life Sciences Solution Suite 2Crystal Research Associates, LLC Issues Executive Informational Overview (EIO) on Aeterna Zentaris Inc. 2Crystal Research Associates, LLC Issues Executive Informational Overview (EIO) on Aeterna Zentaris Inc. 3
... Mass., Aug. 3, 2011 ... medicine, was awarded the American Association of Neuromuscular & ... Accreditation with Exemplary Status. EMG Laboratory has provided ... in and around Merrimack Valley and Cape Cod since ...
... Neuralstem, Inc. (NYSE Amex: CUR ) ... contract to develop its human neural stem cell technology ... contract, entitled "Research to Treat Cancerous Brain Tumors with ... with Principal Investigator John Zhang, MD, PhD, Professor of ...
... 2, 2011 Anadys Pharmaceuticals, Inc. (Nasdaq: ANDS ... financial results on Monday, August 8, 2011, after the U.S. ... call and webcast on Monday, August 8, 2011, at 5:00 ... financial results and highlights.  A live webcast of the call ...
Cached Biology Technology:EMG Laboratory Attains Prestigious National Accreditation for Clinical Excellence in Neuromuscular Diagnosis 2EMG Laboratory Attains Prestigious National Accreditation for Clinical Excellence in Neuromuscular Diagnosis 3Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 2Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 3Anadys Pharmaceuticals to Report Second Quarter 2011 Financial Results 2
MBS 384 well satellite block unit with height adjusting heated lid, 384 well block holds 1 x 0.04 ml 384 well plate...
Multidrop DW is a high-speed automated dispenser for Deep Well plates, 1.1 ml test tubes and 96-well plates. Designed for accuracy and precision, the Multidrop DW dispenses up to eight different reag...
ma. plate stack height 70mm...
... MBS Satellite Thermal Cycler (MBS) ... solution for medium to high ... combines the latest in satellite ... and PC control, resulting in ...
Biology Products: