UCSD biologists solve plant growth hormone enigma

Gardeners and farmers have used the plant hormone auxin for decades, but how plants produce and distribute auxin has been a long-standing mystery. Now researchers at the University of California, San Diego have found the solution, which has valuable applications in agriculture.

The study, published in the July 1 issue of the journal Genes and Development, describes the discovery of a whole family of auxin genes, and shows that each gene is switched on at a distinct location in the plant. Contrary to the current thinking in the field, the research shows that the patterns in which auxin is produced in the plant influence development, a finding that can be applied to improving crops.

"The auxin field dates back to Charles Darwin, who first reported that plants produced a substance that made them bend toward light," said Yunde Zhao, an assistant professor of biology at UCSD. "But until now, the auxin genes have been elusive. Our discovery of these genes and the locations where auxin is produced in the plant can be applied to agricultural problems, such as how to make seedless fruit or plants with stronger stems."

Applying auxin to plants can have many different effects. For example, it can promote root development in cuttings, stimulate fruit development in the absence of fertilization or, in excess, kill weeds. However, this study is the first to show what happens in a plant when auxin production is turned off.

The researchers identified a family of 11 genes (YUCCA 1-11) that are involved in the synthesis of auxin. In Arabidopsis--a small plant favored by biologists because it is easy to manipulate genetically--Zhao's team inactivated combinations of the YUCCA genes and studied the effects of the inactivations on plant growth and development.

"Plant biologists have wanted to do this experiment for a long time, but only recently have new genetic tools such as 'reverse genetics' and 'acti

Contact: Sherry Seethaler
University of California - San Diego

Page: 1 2 3

Related biology news :

1. Plants recognize their siblings, biologists discover
2. UCR biologists unravel the genetic secrets of black widow spider silk
3. UCLA molecular biologists convert protein sequences into classical music
4. NIH awards $7.39 million to Burnham neurobiologists
5. MIT biologists solve vitamin puzzle
6. Transport interrupted -- Texas A&M biologists trace cause of early blindness to tissue defect
7. BC biologists identify alternative brain cancer treatment
8. Yale biologists trick viruses into extinction
9. Brown cancer biologists identify major player in cell growth
10. UCLA and NYU microbiologists crack genome of a parasite that causes a common STD
11. Doing it right: New book helps biologists conduct rigorous and reliable research

Post Your Comments:

(Date:4/17/2017)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... 2016 Annual Report on Form 10-K on Thursday April 13, 2017 ... ... Investor Relations section of the Company,s website at http://www.nxt-id.com  under ... http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
(Date:4/11/2017)... 11, 2017 NXT-ID, Inc. (NASDAQ:   ... announces the appointment of independent Directors Mr. Robin D. ... Board of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , ... forward to their guidance and benefiting from their considerable expertise ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... They call ... complex biological network, a depiction of a system of linkages and connections so ... PhD, associate professor of computer science at Worcester Polytechnic Institute (WPI) and director ...
(Date:10/12/2017)... JOHNSTON, Iowa (PRWEB) , ... October 12, 2017 ... ... company based in Vilnius, Lithuania, announced today that they have entered into a ... collaboration is to provide CRISPR researchers with additional tools for gene editing across ...
(Date:10/12/2017)... ... 12, 2017 , ... BioMedGPS announces expanded coverage of SmartTRAK ... module, US Hemostats & Sealants. , SmartTRAK’s US Market for Hemostats and Sealants ... sealants and biologic sealants used in surgical applications. BioMedGPS estimates the market will ...
(Date:10/12/2017)... (PRWEB) , ... October 12, ... ... ) has launched Rosalind™, the first-ever genomics analysis platform specifically designed for ... complexity. Named in honor of pioneering researcher Rosalind Franklin, who made a ...
Breaking Biology Technology:
Cached News: