HOME >> BIOLOGY >> NEWS
Science, engineering and technology news tips

Tomato grafts show how plants control growth

Genes in one part of a plant can override the genetic program in a distant part of the same plant and change how the plant grows, according to researchers at the University of California, Davis.

"This forces us to look at plant growth and development a little differently," said UC Davis plant biologist Neelima Sinha, who supervised the research team. The system could act like the hormonal system or nervous system in animals, taking orders from one part of the organism to another. For example, environmental signals might switch on genes in the leaves of a plant. Messenger RNA made from these genes would travel to other parts of the plant and change how it grows.

Short pieces of messenger RNA are the blueprints for making proteins from genes encoded by DNA. Conventionally, the process of transcription from DNA to RNA and then translation from RNA to protein is supposed to take place within the same cell.

However, scientists have found that messenger RNA moves throughout plants using a network of tubes called the phloem, said Sinha.

Biologists did not know whether this long-distance movement of messenger RNA had a real function in plants.

Sinha's team grafted shoots from normal tomato plants onto tomato plants with a genetic change that causes abnormally shaped leaves. They found that new leaves on the normal part of the plant began to develop the abnormal leaf pattern.

When they looked at cells from the plants, they found that RNA specific to the genetic change had traveled from the abnormal leaves to the normal part of the plant. The RNA accumulated in the meristems -- the growing tips of the shoots.

"This is the first study to show that long-distance transported RNA is functional," said graduate student Minsung Kim, who is lead author on the study. Because the RNA accumulated in cells of the meristem, it must carry within it an address to tak
'"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
13-Jul-2001


Page: 1 2 3

Related biology news :

1. Science, policy forum focuses on mad cow and related diseases
2. Science, Amersham Biosciences announce call for applicants for 2002 Prize for young scientists
3. Global warming: Science, economics, politics
4. First genetically modified monkey, reported in Science, may promise medical advances for humans
5. Science, technology, and the future: Panel discussion to be held November 1, 1999
6. The Human Genome Project: Science, Law, And Social Change In The 21st Century
7. Houston minority graduation rises in sciences, engineering as result of UH-led alliance
8. Chemical engineering grad students will take notable national awards
9. 4 October press briefing to focus on minority recruitment to science and engineering programs
10. Grant advances biochemical engineering laboratory
11. Tufts University establishes $4 million dollar tissue engineering resource center

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/2/2020)... Calif. (PRWEB) , ... July 01, 2020 , ... ... company, presented its phase 1a findings of Neihulizumab, a biologic for the treatment ... in June 2020. Led by hemato-oncologist Dr. Paul J Martin of the Fred ...
(Date:7/1/2020)... ... 01, 2020 , ... Cure Glioblastoma, a registered 501(c)(3) nonprofit ... aggressive adult brain cancer—announced today the appointments of its first Senior Fellows: John ... the organization’s initiatives and overall vision. , "Senior Fellows are more than advisors; ...
(Date:6/25/2020)... (PRWEB) , ... June 24, 2020 , ... ... cloud-based enterprise software and software-driven clinical data services that accelerate drug development, is ... low-dose selinexor, an XPO1 inhibitor, in hospitalized patients with severe COVID-19. This is ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... ... July 09, 2020 , ... ... (PTU) is commonly used to suppress pigment formation in zebrafish embryos, maintaining optical ... team led by Dr MA has been using the zebrafish model to investigate ...
(Date:7/7/2020)... ... July 06, 2020 , ... R3 International is now ... up to 200 million stem cells. Depending on the patient's condition, treatment may be ... US will die having some form of Alzheimers dementia, and the incidence continues to ...
(Date:7/1/2020)... ... June 29, 2020 , ... MedShift , a ... 2020, despite many obstacles created as a result of COVID-19. As a provider ... partnered medical practices and medical manufacturers by expanding access to device offerings, technology ...
(Date:7/1/2020)... ... June 30, 2020 , ... ... today announced that the launch of a new clinical diagnostics immuno-oncology ... the tumor microenvironment (TME). , “Flagship’s TissueInsight is a service that aids ...
Breaking Biology Technology:
Cached News: