Navigation Links
Nitric oxide regulates plants as well as people
Date:4/27/2008

Nitric oxide has emerged as an important signaling molecule in plants - as in mammals including people. In studies of a tropical medicinal herb as a model plant, researchers have found that nitric oxide targets a number of proteins and enzymes in plants.

In collaborative work with the research group of Renu Deswal, a faculty member, and her doctoral student at the Botany Department, University of Delhi, India, Agricultural Research Service (ARS) scientist Autar Mattoo has identified 19 such targeted proteins and enzymes in Kalanchoe pinnata, also known as "miracle leaf."

These proteins and enzymes are involved in regulating processes from seed germination to cell development to plant death. Notably, they also regulate many other important processes including photosynthesis, sugar metabolism, disease- and stress tolerance in plants.

Mattoo is a plant physiologist with the ARS Sustainable Agricultural Systems Laboratory at Beltsville, Md.

The collaborative research suggests that the effects of nitric oxide, a sometimes toxic byproduct of nitrogen oxidation in soil, may have broader implications in plant processes than realized. Its modification of proteins, a process called S-nitrosylation, is increasingly recognized as an ubiquitous regulatory reaction in plants and mammals.

Mattoo and Deswal have shown for the first time that nitric oxide inactivates Rubisco, a major enzyme involved in carbon dioxide fixation and photosynthesis in plants.

Kalanchoe represents plants that have a unique method of carbon dioxide fixation that is shared by succulent plants. Kalanchoe has diverse possible medicinal benefits suggesting the presence of interesting processes at work. Mattoo hopes to do similar studies with major crops grown in different production systems, with an eye toward improving both crop yields and quality, including nutritional benefits.

Other scientists have studied nitric oxide targets in the most common model plant, Arabidopsis. Mattoo and collaborators found that Kalanchoe had some nitric oxide targets in common with Arabidopsis, such as Rubisco and drought-protective proteins. They also found new protein targets in Kalanchoe that have not been reported previously.


'/>"/>

Contact: Melanie Thomson
melanie.thomson@wiley.com
01-865-476-270
Wiley-Blackwell
Source:Eurekalert

Related biology news :

1. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
2. Elevated nitric oxide in blood is key to high altitude function for Tibetans
3. Mice use specialized neurons to detect carbon dioxide in the air
4. New membrane strips carbon dioxide from natural gas faster and better
5. US fires release large amounts of carbon dioxide
6. Nitrous oxide from ocean microbes
7. Food source threatened by carbon dioxide
8. New model revises estimates of terrestrial carbon dioxide uptake
9. Elevated carbon dioxide changes soil microbe mix below plants
10. Research explores role of hydrogen peroxide in cell health
11. First-ever study to link increased mortality specifically to carbon dioxide emissions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/21/2017)... Der weltweite Biobanking-Sektor wird bis zum Jahr 2018 ... mehr als 50 Vertretern aus verschiedenen Branchen wurde aber klar, ... Prognose zu realisieren. ... Zu den Schwierigkeiten für Biobanking-Profis ... die Biobank, die Implementierung Zeit sparender Technologien, ein besseres ...
(Date:2/14/2017)... , Feb. 14, 2017  Wake Forest Baptist ... as its new chief executive officer (CEO). Freischlag joins ... John D. McConnell , M.D., who last year ... at the Medical Center, after leading it since 2008. ... full scope of Wake Forest Baptist,s academic health system, ...
(Date:2/13/2017)... WASHINGTON , Feb. 13, 2017 Former ... U.S. Senate Judiciary Committee, Janice Kephart of ... regarding President Donald Trump,s "Executive Order: Protecting ... States" (Jan. 27, 2017):  "As President Trump,s ... 9th Circuit has now essentially banned the travel ban, ...
Breaking Biology News(10 mins):
(Date:2/26/2017)... ... February 26, 2017 , ... Rob Lowe is a well recognized television personality, ... "Informed," focuses on issues that are important to the American public and important to ... has been a hot topic around the world for a few years. , The ...
(Date:2/24/2017)... ... February 24, 2017 , ... Chef Jodi Abel has returned ... Making stops in several cities, she gained a number of delicious recipes and new ... a town in South Africa’s Western Cape province. It is internationally renowned for ...
(Date:2/24/2017)...  Driven by consumers, preference towards more natural ... growing categories, finds the recently published U.S. volume ... Multi-regional Market Analysis and Opportunities study by ... "Biotechnology actives are derived from natural ... for skin and hair care applications," explains ...
(Date:2/24/2017)... Corporation (NASDAQ: VWR), the leading global independent provider of product ... its financial results for the fourth quarter and full year ... 4Q16 record quarterly net sales of $1.13 billion, up ... 4Q16 EMEA-APAC segment net sales increased ... net sales increased 2.5%, or down 0.9% on an organic ...
Breaking Biology Technology: