Navigation Links
The amazing maze of maize evolution
Date:10/2/2009

Understanding the evolution and domestication of maize has been a holy grail for many researchers. As one of the most important crops worldwide and as a crop that appears very different from its wild relatives as a result of domestication, understanding exactly how maize has evolved has many practical benefits and may help to improve crop yields.

In the October issue of the American Journal of Botany (www.amjbot.org/cgi/content/full/96/10/1798), Dr. Marina Dermastia and colleagues published their research comparing corn kernel development to its closest wild relative: teosinte. This research overturns some commonly held beliefs on the domestication of maize because, unexpectedly, many traits seen in the cellular development of maize kernels that were previously attributed to the process of domestication were observed in the development of the teosinte kernels by Dermastia and her colleagues. "Although the teosinte kernels are morphologically so different from that of maize, their inside is not, Dermastia said. "Although we did not expect fundamental differences between maize and teosinte, the similarities were striking."

Some of the traits thought to be unique to maize but now also found in teosinte include an early programmed cell death for cells in part of the kernel and accumulation of phenolic and flavonoid compounds in the walls of these cells. These developmental changes strengthen the cells, protect them against decay and disease, and increase water conductance. According to Dermastia, "We suggested previously that this process was important for the establishment of the water and assimilate flow to the developing maize kernelin the teosinte kernel, we not only detected programmed cell deathbut also all other phenomena described as related to the transport into the maize kernel." The presence of these traits in teosinte kernels suggests that they are not a consequence
'/>"/>

Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert

Page: 1 2

Related biology news :

1. Researchers find the earliest evidence of domesticated maize
2. Early origins of maize in Mexico
3. Ancient Mexican maize varieties
4. Team finds an economical way to boost the vitamin A content of maize
5. If corn is biofuels king, tropical maize may be emperor
6. Simulating kernel production influences maize model accuracy
7. Transgenic maize is more susceptible to aphids
8. First all-African GM crop is resistant to maize streak virus
9. Genetic conflict in fish led to evolution of new sex chromosomes
10. Frozen assets: NIAID researchers turn to unique resource for clues to norovirus evolution
11. UAB professors book promises solution for teaching evolution without conflict
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/6/2014)... PITTSBURGH--Speed is an asset for a predator. Except when that ... The tiger beetle, relative to its size, is the fastest ... 120 body lengths per second (at about five miles per ... To take the sprinting gold from the tiger beetle, a ... BUT! The tiger beetle has a problem. At peak speeds, ...
(Date:11/4/2014)... 5, 2014 – University of Utah engineers developed the ... jet fuel produce electricity without needing to ignite the ... power portable electronics, off-grid power and sensors. , A ... the American Chemical Society journal ACS Catalysis . ... chemical reaction between a fuel and an oxygen-rich source ...
(Date:11/4/2014)... OXFORD, England , November 4, 2014 ... expansion and vertical market growth   Fuel3D ... it has closed a funding round totaling $6.4 million (£4 ... (£1.6 million) funding secured earlier this year and paves the ... product in 2015. The funding round was led ...
Breaking Biology News(10 mins):The tiger beetle: Too fast to see 2Jet-fueled electricity at room temperature 2Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3
... Institute Associate Scientist Thomas Brutnell is helping lead a ... attempting to solve one of the "grand challenges" in ... plants will grow and develop based on their particular ... found or planted. Solving this problem requires new computer ...
... recently diverged populations of a southern California songbird produce ... isolation that accompanies the origin of new bird species. ... in the preen oils of Dark-eyed Juncos is described ... so much we don,t know about the role of ...
... Montreal, March 23, 2010 Age and gender play a ... a new study on 20-to-64-year-olds. Published in the journal ... Universit de Montral and the Montreal Heart Institute in collaboration ... McGill University. "Our findings suggest that women who are ...
Cached Biology News:BTI's Brutnell leads part of NSF Computational Plant Biology Research System 2BTI's Brutnell leads part of NSF Computational Plant Biology Research System 3Could smell play a role in the origin of new bird species? 2Could smell play a role in the origin of new bird species? 3Men and women respond differently to stress 2
(Date:11/26/2014)... November 26, 2014 The North ... segments the market for detailed analysis of the ... market to reach $616.3 million by 2018, growing ... 2018. , Browse through the TOC of the ... get an idea of the in-depth analysis and ...
(Date:11/26/2014)... -- The announced sales of three healthcare units within ... expand in non-healthcare areas, says Kalorama Information. Siemens hasn,t ... says that  Siemens is the third largest company in ... IVD market , with 5.5 billion in IVD revenues ... likely affect IVD market shares.  Siemens ...
(Date:11/26/2014)... 26, 2014 The Alliance for ... survey of European physicians at the "1 ST ... Biological Therapies" at the Spanish Ministry of Health, ... EuropaBio and the Spanish Bioindustry Association (ASEBIO), included ... from Spanish oncology and rheumatology societies, representatives from ...
(Date:11/26/2014)... November 26, 2014 The ETC ... award-winning technology innovation centers, announced today that applications ... on December 1st. “Do you have a big ... I want to know about it. AccelerateBaltimore helps ... to product in just 13 weeks.” Interested ...
Breaking Biology Technology:The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3Kalorama: Sale of Three Siemens Healthcare Units Raises Questions About Firm's IVD Future 2ASBM Presents European Physicians Survey at Spanish Ministry of Health 2AccelerateBaltimore Applications to Close in 6 Days 2AccelerateBaltimore Applications to Close in 6 Days 3
Printer paper for Model 680 series readers is used with the thermal printers of the Model 680 and Model 680 XR microplate readers. Supplied as 2 rolls....
... cell, wide format, is used for vertical electrophoresis applications. ... and requires 1.2 L of running buffer. It includes ... mm IPG conversion kit, which contains accessories for use ... of IPG clamps, 2 sets of 20 x 20 ...
Includes PROTEAN II xi Basic unit and IPG conversion kit PROTEAN II XL Cell, wide format, Compatible with ReadyStrip IPG Strips 1.0 mm 165-3188 1.5 mm 165-3189 2.0 mm 165-3190...
... This depletion cocktail is ... cells from suspensions of rat ... using the StemSep (or compatible ... system. The T cell content ...
Biology Products: