Navigation Links
Traces of early Native Americans -- in sunflower genes
Date:4/2/2010

thus annuus, which are known as HaFT paralogs. Each of the paralogs, HaFT1 through HaFT4, has a unique genetic sequence, but is similar enough to the others to conclude three of them were the result of DNA duplication events in sunflower's distant past.

"Based on the level of divergence between the various HaFTs and the presence of a single FT copy in lettuce, we inferred that one copy became two during a whole genome doubling event that occurred roughly 30 million years ago," Blackman said. "One of those copies proliferated further through two small-scale duplications that we infer occurred much more recently."

The scientists examined each paralog's expression patterns within sunflower, and by strategically cloning variants of the HaFT genes into the model plant Arabidopsis thaliana, discerned the paralogs' physiological properties in one another's presence.

One of the paralogs, HaFT3, has lost function and is no longer expressed. Countless genome surveys show "non-functionalization" is a common fate for gene duplicates in plants and other eukaryotes, possibly because the extra dose of genetic expression can be wasteful or overtly harmful to the organism.

Two of the paralogs, HaFT2 and HaFT4, are structurally similar to each other and have retained normal function. The proteins they encode are produced in leaves in response to day length. It is believed the HaFT2 and HaFT4 proteins travel down to the stem and up to the shoot tip, where they compel meristem cells to develop into flower buds, but this has yet to be shown conclusively for Helianthus annuus.

HaFT1 isn't produced in the leaves but at the site of HaFT2 and HaFT4's target -- the shoot tip and the green bracts that will radiate out from the flower itself. There are two basic versions of the HaFT1 called alleles. The domesticated HaFT1 allele is distinguished from the wild allele by the omission of a single nucleotide. But what a difference that nucleo
'/>"/>

Contact: David Bricker
brickerd@indiana.edu
812-856-9035
Indiana University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Computer program traces ancestry using anonymous DNA samples
2. Technique traces origins of disease genes in mixed human populations
3. UC biology prof traces his roots to the first Earth Day
4. Glowing films developed by UC San Diego chemists reveal traces of explosives
5. CSHL team traces extensive networks regulating alternative RNA splicing
6. Natural-born divers and the molecular traces of evolution
7. 60 second test could help early diagnosis of common brain diseases
8. Restless legs syndrome affects nearly 2 percent of US/UK children
9. Bleeding, not inflammation, is major cause of early lung infection death
10. Pig study sheds new light on the colonisation of Europe by early farmers
11. Color contrast is seen by the brain early doors
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Traces of early Native Americans -- in sunflower genes
(Date:7/28/2014)... explorer Roald Amundsen reached the South Pole in 1911, ... long before any human. , Using data from 16 ... Antarctic continent, including the South Pole, a group led ... in Reno, Nevada, created the most accurate and precise ... continent. The new record, described in an article published ...
(Date:7/28/2014)... a circulatory problem of the legs called peripheral vascular ... surgery in serious cases. This disease can lead to ... , At The University of Texas Health Science Center ... preventative treatment in a mouse model of the disease ... Their proof-of-concept study appears in the journal Cell ...
(Date:7/28/2014)... -- Fifteen years ago, MIT professor John Essigmann and colleagues ... an HIV drug. They thought if they could induce the ... and eventually die out a strategy that our immune ... such a drug, which caused HIV to mutate at an ... virus from patients in a small clinical trial reported in ...
Breaking Biology News(10 mins):Lead pollution beat explorers to South Pole, persists today 2Lead pollution beat explorers to South Pole, persists today 3Scientists discover genetic switch that can prevent peripheral vascular disease in mice 2Forced mutations doom HIV 2Forced mutations doom HIV 3Forced mutations doom HIV 4
... since Darwin first published The Origin of the Species, ... common ancestor of all living species. Paleontological, biochemical, and ... tree. Now a team of researchers, led by ... at Buffalo and including area high school students, has ...
... largest drought in 50 years has severely damaged much of ... Minnesota,s 2012 corn crop. While an extreme, this summer,s condition ... to use limited resources like water in an effective and ... the University of Minnesota, seeks to address these challenges through ...
... forest reserves in a new study are ineffective, according ... by William Laurance, research associate at the Smithsonian Tropical ... and more than 200 co-authors., "Biodiversity is declining ... Republic of Congo, Xishuangbanna in southern China, and Northern ...
Cached Biology News:Researchers dig through the gene bank to uncover the roots of the evolutionary tree 2U of M researcher's 'Darwinian Agriculture' explains how evolution can improve agriculture 2U of M researcher's 'Darwinian Agriculture' explains how evolution can improve agriculture 3
(Date:7/29/2014)... Tenn. (PRWEB) July 29, 2014 ... in biomass feedstock supply innovation and supply chain ... proprietary feedstock management systems, Energy Grange™ and Supply ... of R&D and in-the-field testing aimed at consolidating ... offering benefits to landowners, farmers and feedstock end ...
(Date:7/29/2014)... G-CON Manufacturing Inc., the standard in ... a new leadership appointment designed to drive the company’s ... , Maik Jornitz, Chief Operating Officer of G-Con ... with leading the pioneering company through its next phase ... of development and look forward to providing our next ...
(Date:7/29/2014)... 2014 White papers by Clinovo ... based eClinical technologies, have been published by leading pharmaceutical ... a long line of white papers by Clinovo to ... Science Leader, Pharmaceutical Online, and OpenHealthNews. , At the ... by CTO Marc Desgrousilliers, 'The Five Essentials of ...
(Date:7/28/2014)... VA (PRWEB) July 28, 2014 The ... nonprofit authority on the use of health IT to ... Health Plan Identifier (HPID) Workgroup has developed ... a Health Plan and Payer?” The HPID Workgroup, a ... closely with the Centers for Medicare and Medicaid Services ...
Breaking Biology Technology:Genera Energy Introduces Proprietary Feedstock Management Systems 2Genera Energy Introduces Proprietary Feedstock Management Systems 3Genera Energy Introduces Proprietary Feedstock Management Systems 4G-CON Manufacturing, Inc. Announces Maik Jornitz as President 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 3WEDI’s HPID Workgroup Announces Release of Issue Brief: “What is the Difference Between a Health Plan and Payer?” 2
... May 11 N30 Pharma (N30), a biopharmaceutical company focused on the discovery ... oxide, announced today that it has completed a $10 million financing and ... , Joining the Company,s ... , , ...
... /PRNewswire-Asia-FirstCall/ -- Yongye International, Inc.,(Nasdaq: YONG ), ("Yongye" or the "Company") a ... China , today announced that it will conduct a conference call at ... for the quarter ended March 31,2010 . , ... To participate in the live conference call, ...
... China , May 11 /PRNewswire-Asia-FirstCall/ -- 3SBio Inc.,(Nasdaq: SSRX ... on researching, developing, manufacturing and marketing,biopharmaceutical products, today announced that it will ... on May 16, 2010 ,at 8:00pm (Eastern). , ... Following ...
Cached Biology Technology:Yongye International Announces Conference Call to Discuss First Quarter Fiscal Year 2010 Results 23SBio Inc. To Report 2010 First Quarter Unaudited Financial Results on May 16, 2010 2
...
Cell Culture Flask, 25 cm, tissue-culture treated polystyrene...
... Virgin, optically clear polystyrene with frosted ... coordinates for cell counting. 100% integrity ... a new product number, created to ... showing no availability yet, please order ...
... clear polystyrene with frosted labeling surfaces, ... cell counting. 100% integrity tested. Linkage: ... product number, created to easily match ... availability yet, please order under the ...
Biology Products: