Navigation Links
Newly discovered 'scarecrow' gene might trigger big boost in food production
Date:1/24/2013

tly evolved from C3 plants some 60 times at different times and places. The C4 adaptation involves Kranz anatomy in the leaves, which includes a layer of special bundle sheath cells surrounding the veins and an outer layer of cells called mesophyll. Bundle sheath cells and mesophyll cells cooperate in a two-step version of photosynthesis, using different kinds of chloroplasts.

By looking closely at plant evolution and anatomy, Slewinski recognized that the bundle sheath cells in leaves of C4 plants were similar to endodermal cells that surrounded vascular tissue in roots and stems.

Slewinski suspected that if C4 leaves shared endodermal genes with roots and stems, the genetics that controlled those cell types may also be shared. Slewinski looked for experimental maize lines with mutant Scarecrow genes, which he knew governed endodermal cells in roots.

When the researchers grew those plants, they first identified problems in the roots, then checked for abnormalities in the bundle sheath. They found that the leaves of Scarecrow mutants had abnormal and proliferated bundle sheath cells and irregular veins.

In all plants, an enzyme called RuBisCo facilitates a reaction that captures carbon dioxide from the air, the first step in producing sucrose, the energy-rich product of photosynthesis that powers the plant. But in C3 plants RuBisCo also facilitates a competing reaction with oxygen, creating a byproduct that has to be degraded, at a cost of about 30-40 percent overall efficiency. In C4 plants, carbon dioxide fixation takes place in two stages. The first step occurs in the mesophyll, and the product of this reaction is shuttled to the bundle sheath for the RuBisCo step. The RuBisCo step is very efficient because in the bundle sheath cells, the oxygen concentration is low and the carbon dioxide concentration is high. This eliminates the problem of the competing oxygen reaction, making the plant far more efficient.


'/>"/>
Contact: John Carberry
johncarberry@cornell.edu
607-255-5353
Cornell University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Newly released FDA draft guidelines for biosimilar drugs to be discussed at conference
2. Scripps Research discoveries lead to newly approved drug for infant respiratory distress syndrome
3. Newly discovered foot points to a new kid on the hominin block
4. Newly found protein helps cells build tissues
5. Scientists advance field of research with publication of newly validated method for analyzing flavanols in cocoa
6. Key proteins newly discovered form and function may provide novel cancer treatment target
7. Newly discovered breast milk antibodies help neutralize HIV
8. Newly discovered dinosaur implies greater prevalence of feathers
9. U of M researchers: Newly discovered genetic markers could signal colon cancer development
10. ORNLs newly licensed neutron detector will advance human disease research
11. Newly discovered letters and translated German ode expand Texas link to infamous Bone Wars
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2014)... A group of researchers from the University of Helsinki ... experimentally to reproduce in mice morphological changes which have ... gradual modifications in the embryonic development of mice teeth, ... morphologically are very similar to those observed in the ... millions of years ago. , To modify the ...
(Date:7/30/2014)... is pleased to announce its new relationship with the ... and CINP will partner to publish International Journal ... open-access journal. , Alan Frazer, Editor-in-Chief of IJNP ... expertise of OUP will further facilitate the goal for ... very leading journals within neuropsychopharmacology. The conversion of the ...
(Date:7/30/2014)... $1 million from the Cornelia Cogswell Rossi Foundation to ... , The newly established Connie Cogswell Rossi ... a greater breadth and depth of knowledge of neurobehavioral ... of research to improve human health. , The new ... Laboratory and its external partners, supporting research to enhance ...
Breaking Biology News(10 mins):Scientists reproduce evolutionary changes by manipulating embryonic development of mice 2OUP to partner with the International College of Neuropsychopharmacology 2Rossi Foundation pledges $1M for JAX neurobehavioral research center 2
... (August 2, 2013) In a new observational study ... researchers looked at the association of grape consumption, in ... raisins and 100% grape juice with the diet ... children and adults. Their findings suggest that, among adults ...
... University of Toronto Engineering professor Ben Hatton is turning ... the energy leaks from windows. In an article in ... his colleagues at Harvard University describe a novel process to ... buildings cool during the summer. Their "bio-inspired approach to ...
... . . . By substituting lignin for ... have developed a process that requires fewer steps and ... ReNEW-PRO, is a low-cost lithium-ion battery anode made inexpensively ... pulp and paper industry. ReNEW-PRO was developed in collaboration ...
Cached Biology News:Grape consumption associated with healthier eating patterns in US children and adults 2Bio-inspired design may lead to more energy efficient windows 2August 2013 story tips from Oak Ridge National Laboratory 2
(Date:7/30/2014)... (PRWEB) July 30, 2014 ... of leading Immunologists, Principle Investigators, scientists in the ... J Malemud, Professor at Case Western Reserve University ... his keynote address on “The effects of ... production of matrix metalloproteinase-9”. Arya Biragyn, a Senior ...
(Date:7/29/2014)... 2014 SoundConnect , an ... is proud to announce the strategic additions of ... their Boston, Charleston and Atlanta offices. SoundConnect’s ... demand for hosted solutions, collaboration and mobility that ... cost. , SoundConnect was founded in 2004, with ...
(Date:7/29/2014)... have hurdled a number of significant technological challenges ... observing technology originally created for the James Webb ... Investigator Harvey Moseley, a scientist at NASA,s Goddard ... that electrostatically actuated microshutter arrays that is, ... are as functional as the current technology,s magnetically ...
(Date:7/29/2014)... DIEGO , July 29, 2014   Sequenom, ... sciences company that provides innovative genetic analysis solutions, and ... of esoteric laboratory services in the United ... noninvasive prenatal testing patents and applications. "We ... innovation, and patient care, and we welcome the opportunity ...
Breaking Biology Technology:Unveiling Breakthroughs in Clinical & Cellular Immunology 2Unveiling Breakthroughs in Clinical & Cellular Immunology 3SoundConnect Organization and Culture is Evolving 2Revolutionary microshutter technology hurdles significant challenges 2Revolutionary microshutter technology hurdles significant challenges 3Revolutionary microshutter technology hurdles significant challenges 4Sequenom Enters Into License Agreement With Mayo Medical Laboratories 2Sequenom Enters Into License Agreement With Mayo Medical Laboratories 3Sequenom Enters Into License Agreement With Mayo Medical Laboratories 4
... Calif., Aug. 11 /Xinhua-PRNewswire-FirstCall/ --,Kiwa Bio-Tech Products Group ... second quarter of 2008 ended June 30 were,$3,027,497 ... for the second,quarter of 2007. Revenues for the ... from the previous year., The significant revenue ...
... Calif., Aug. 11 Telik, Inc.,(Nasdaq: TELK ) reported ... the second quarter ended June 30, 2008, compared with a ... comparable period in 2007. The,$13.6 million net loss for the ... charge related to auction rate securities, which,is reflected in interest ...
... least half of shipments by the end of ... today announced that it will begin shipment of ... to U.S. customers,for the 2008-2009 influenza season. The ... Evaluation and Research (CBER) released the,first lots of ...
Cached Biology Technology:Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 2Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 3Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 4Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 5Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 6Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 7Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 8Kiwa Bio-Tech 2nd Quarter Revenues Increase 61.7% to $3 Million, Six Month Revenues Top $5.2 Million 9Telik Announces Financial Results For 2008 Second Quarter 2Telik Announces Financial Results For 2008 Second Quarter 3Telik Announces Financial Results For 2008 Second Quarter 4GSK Begins Shipments of Fluarix(R) and FluLaval(R) to U.S. Customers for 2008-2009 Influenza Season 2GSK Begins Shipments of Fluarix(R) and FluLaval(R) to U.S. Customers for 2008-2009 Influenza Season 3GSK Begins Shipments of Fluarix(R) and FluLaval(R) to U.S. Customers for 2008-2009 Influenza Season 4
...
BD Biocoat Matrigel Matrix Thin Layer 35 mm Culture Dishes...
... derived from the Spodoptera frugiperda Sf21 cell line ... transfections, plaque assays, virus production, and protein expression. ... optimizes recovery of viable cells after thawing. They ... Cell Medium and can also be grown in ...
... premium quality recombinant form of Thermus aquaticus ... for a wide range of PCR applications. ... performance, each preparation is extensively tested in ... DNA Polymerase possesses an integral 5′→3′ exonuclease ...
Biology Products: