HOME >> BIOLOGY >> NEWS
Hunt for a new plant hormone points to carotenoids

In looking for clues to the identity of a mysterious new plant hormone, a research team lead by Ottoline Leyser of the University of York has come one step closer in finding a gene required for the hormone's synthesis. The biochemical activity of this synthesis protein potentially offers a significant clue to the nature of the hormone, which is thought to coordinate rates of growth between different plant tissues.

In plants, as in animals, communication between different parts of the body is vital if the left hand is to know what the right hand is doing. In animals, this is achieved by a combination of the nervous system and hormone signals. Plants don't have a nervous system, so hormonal signals have a greater role to play. Darwin was instrumental in discovering the first known plant hormone, auxin, and since then a handful of additional long-distance chemical messengers have been found in plants. This number is surely insufficient to accomplish the complex coordinated progression of a plant through its life cycle and the plant's diverse responses to changing environmental conditions. Many plant biologists therefore believe that there are more plant hormones out there waiting to be discovered.

Recent results from work on pea, petunia, and the small weed Arabidopsis have suggested the existence of one such novel plant hormone. The main role of this hormone is to regulate the degree of shoot branching. The hormone is apparently made throughout the plant, but hormone made in the roots is able to travel up the plant to influence branching in the shoot, suggesting that it may play a role in balancing root and shoot growth.

In this issue of Current Biology, Ottoline Leyser and co-workers describe the identification of a gene that is essential for the synthesis of this novel hormone. The gene encodes a protein that they show can cleave carotenoids, such as the chemicals responsible for the orange pigment in carrots. This suggests that the new hormo
'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
26-Jul-2004


Page: 1 2

Related biology news :

1. Pack-MULEs are toting a new look at plant evolution
2. New research shows plants can shuffle and paste gene pieces to generate genetic diversity
3. Pollutant causes delayed flowering in plants
4. NSF awards 22 new projects for plant genome research
5. K-State, other universities to study how climate affects plant evolution
6. New fruitfly model of diabetes has future implications for pancreatic cell transplantation
7. Pig-human transplantation not PERVerted
8. Purdue study finds antioxidant protects metal-eating plants
9. Patented process preserves transplant tissues/organs
10. New discovery may help transplants survive
11. Babies with DiGeorge syndrome saved by immune supression, thymus transplant

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: