Navigation Links
ISU researcher identifies genetic pathway responsible for much of plant growth
Date:5/20/2009

AMES, Iowa -- Researchers at Iowa State University have discovered a previously unknown pathway in plant cells that regulates plant growth.

Yanhai Yin, an assistant professor in genetics, development and cell biology, examined signaling mechanisms of a plant hormone called brassinosteroids. The hormone controls the growth of cells.

The brassinosteroids (BRs) have a major impact on how large the plant grows, says Yin.

"Previously, we knew that steroids promote growth," said Yin. "In model plants like Arabidopsis (a relative of mustard) and crops such as corn and rice, if you have more steroids, you have more growth, and if you have less steroids, you have less growth and the plant is smaller."

Now Yin knows that the HERK1 (named for Hercules -- the Greek and Roman god who possessed superhuman strength) pathway, induced by BRs, is controlling much of that growth.

Yin and his team's findings are in the May 5 edition of the journal Proceedings of the National Academy of Sciences of the United States of America.

There are many other internal and external factors such as light, nutrition and hydration that effect plant growth, but the HERK1, along with some unknown signals, have a great effect.

Yin and his team of Hongqing Guo, assistant scientist; Lei Li, Huaxun Ye, and Xiaofei Yu, all graduate students; and Alexandria Algreen, undergraduate student; have shown that by over-expressing HERK1, they were able to increase a plant's size by 10 to 15 percent.

By under-expressing HERK1, the plants were about 50 percent smaller.

Now Yin and his group are trying to find what regulates HERK1 and how HERK1 controls growth.

Understanding what make plants get bigger could be a critical component when producing grain and bio-mass for biofuels.

"With that knowledge, maybe we have one more tool to manipulate corn and rice if we want more grain, or if we want more mass for bio-energ
'/>"/>

Contact: Yanhai Yin
yin@iastate.edu
515-294-4816
Iowa State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. MCG researcher among first to receive NIH stimulus funding
2. UCSD researchers make first direct observations of biological particles in high-altitude ice clouds
3. 3-D kidney atlas created for researchers and physicians
4. Researchers gain genome-wide insights into patterns of the worlds human population structures
5. UMMS researchers isolate first neuroprotective gene in patients with amyotrophic lateral sclerosis
6. NOAA researchers: Blue whales re-establishing former migration patterns
7. OHSU researchers study the idling brain
8. Hebrew University researchers neutralize tumor growth in embryonic stem cell therapy
9. Researchers find snippet of RNA that helps make individuals remarkably alike
10. Stowers researchers develop whole genome sequencing approach for mutation discovery
11. Pfizer supports open access publishing for researchers in low-income countries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... have developed a unique method to use microbes buried ... areas. , The first microbe-powered, self-sustaining wastewater treatment ... to clean up waste from large farming operations and ... Professor Haluk Beyenal and graduate student Timothy Ewing in ... system in the online edition of Journal of ...
(Date:9/18/2014)... that can operate inside the bore of an MRI ... biomedical research partnership program at Brigham and Women,s Hospital ... robot, in conjunction with real-time MRI images, can make ... less discomforting for the patient. The novel system also ... greater precision. , Developed by a team of robotics ...
(Date:9/18/2014)... acquire and creatively manipulate spoken language is unique to ... 6 million years of human evolution to make this ... candidate gene we now have," says Wolfgang Enard, Professor ... efforts to understand the molecular biological basis of language ... results of his latest study, undertaken in collaboration with ...
Breaking Biology News(10 mins):Researchers develop unique waste cleanup for rural areas 2Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 2Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 3Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 4Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 5Language evolution: Quicker on the uptake 2Language evolution: Quicker on the uptake 3
... University is proving its potential to impact global health. ... journal PLoS ONE , Rice alumnus Andrew Miller ... which costs $240, stacks up nicely against devices that ... of tuberculosis. Miller and colleagues at The Methodist ...
... not recognized as an animal until the 19th century, is ... have their genome sequenced. In a paper appearing in ... a team of researchers led by Daniel Rokhsar of the ... Genome Institute (JGI), report the draft genome sequence of the ...
... How well do you understand life in your own backyard? Cities ... aren,t visitors; they are an integral component, like trees in a ... the Earth,s people live in cities and the amount of paved ... Ohio, shouldn,t our sciences thrive in the city? Urban Ecosystem ...
Cached Biology News:Compact microscope a marvel 2Compact microscope a marvel 3Genome of ancient sponge reveals origins of first animals, cancer 2Genome of ancient sponge reveals origins of first animals, cancer 3Genome of ancient sponge reveals origins of first animals, cancer 4The real urban jungle 2
(Date:9/19/2014)... SAN DIEGO , Sept. 19, 2014 ... engaged in the development of high-value and difficult to ... will be presenting at the 21 st Annual ... New York . Bertrand Liang , chief ... the company,s development programs and business strategy on Friday, ...
(Date:9/19/2014)... 19, 2014 ... ) has announced the addition of the  "Micro ... to their offering.       (Logo: http://photos.prnewswire.com/prnh/20130307/600769) ... of the fastest-growing segments in the chromatography market. ... 2013, and expected to reach $2.0 billion by ...
(Date:9/18/2014)... (PRWEB) September 18, 2014 ... urological and interventional radiology products and services, announced ... as cryotherapy and cryoablation) versus external beam radiotherapy ... of the American Urological Association (MAAUA) Annual Meeting ... "Comparing Relative Effectiveness of Cryosurgery and External Beam ...
(Date:9/18/2014)... Sept. 18, 2014  Health Enhancement Products, Inc. (OTCQB: HEPI), ... algae bioactive compounds and metabolic processes, is pleased to announce ... of directors. Ms. Nola E. Masterson , a ... the board effective September 17, 2014. "We,re ... join our board," states Andrew Dahl , President and ...
Breaking Biology Technology:Pfenex to Present at Upcoming Industry Conference on September 26 2Micro Market Monitor : Global Pre-packed Chromatography Columns 2HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2Health Enhancement Announces New Board Member In Advance Of Annual Shareholder Meeting 2
... SOMERSET, N.J., June 9 Alfacell Corporation,(Nasdaq: ACEL ... quarter,of fiscal 2008., The company recorded a net ... diluted common share, for the third fiscal quarter ended,April ... million, or $0.04,per basic and diluted common share, for ...
... Limited (LSE: SHP,Nasdaq: SHPGY), the global specialty biopharmaceutical ... lots of the ADHD patch DAYTRANA (lots,2750211 and ... DAYTRANA,patches do not meet their release liner removal ... have difficulties removing the,liners. This voluntary recall is ...
... 9 Amira Pharmaceuticals, a small,molecule pharmaceutical company ... treat inflammatory diseases, announced the hiring of Michael,V. ... Swanson has over 30 years of experience in ... in life sciences and specialty,pharmaceutical companies. Prior to ...
Cached Biology Technology:Alfacell Reports Financial Results for Third Quarter of Fiscal 2008 2Alfacell Reports Financial Results for Third Quarter of Fiscal 2008 3Alfacell Reports Financial Results for Third Quarter of Fiscal 2008 4Alfacell Reports Financial Results for Third Quarter of Fiscal 2008 5Alfacell Reports Financial Results for Third Quarter of Fiscal 2008 6Non-Safety-Related Voluntary Recall of a Limited Portion of DAYTRANA(TM) (Methylphenidate Transdermal System) Patches Announced 2Non-Safety-Related Voluntary Recall of a Limited Portion of DAYTRANA(TM) (Methylphenidate Transdermal System) Patches Announced 3Non-Safety-Related Voluntary Recall of a Limited Portion of DAYTRANA(TM) (Methylphenidate Transdermal System) Patches Announced 4Amira Pharmaceuticals Hires Industry Veteran for CFO Position 2
... system is used for single-color real-time detection ... or JOE fluorophores and features a real-time ... data from 96 wells, a gene expression ... analysis. The system includes the optical module ...
... Precision-designed for Optimal Microdissection , CapSure HS ... precise and rapid extraction of populations of ... samples with Laser Capture Microdissection., Ensure ... Molecular Analysis , All CapSure LCM Caps ...
Opticon continuous fluorescence detector; includes optical base, analysis software, computer and monitor (this is an accessory for the DNA Engine thermal cyclers which must be ordered seperately)...
... systems are highly sensitive laser confocal systems ... are advanced scanners that meet your expectations, ... level, and optimizing the signal on the ... of the range for increased sensitivity. Results ...
Biology Products: