Navigation Links
Nitric oxide regulates plants as well as people

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

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:
(Date:10/29/2015)... LA JOLLA, Calif. , Oct. 29, 2015 /PRNewswire-USNewswire/ ... released a new report titled, "DNA Synthesis and Biosecurity: ... how well the Department of Health and Human Services ... was issued in 2010. --> ... advances, but it also has the potential to pose ...
(Date:10/29/2015)... 29, 2015 NXTD ) ... focused on the growing mobile commerce market and ... StackCommerce, a leading marketplace to discover and buy ... smart wallet on StackSocial for this holiday season. ... the "Company"), a biometric authentication company focused on ...
(Date:10/27/2015)... , Oct. 27, 2015 Synaptics Inc. (NASDAQ: ... today announced that Google has adopted the Synaptics ® ... controller solutions to power its newest flagship smartphones, the ... Huawei. --> --> ... Google to provide strategic collaboration in the joint development ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... -- Orexigen® Therapeutics, Inc. (Nasdaq: OREX ) today ... discussion at the Piper Jaffray 27th Annual Healthcare Conference ... is scheduled for Wednesday, December 2, at 8:00 a.m. ... will be available for 14 days after the event.  ... Corporate Communications and Business Development , BrewLife(858) 875-8629 ...
(Date:11/25/2015)... ... November 25, 2015 , ... ... featured on AngelList early in their initial angel funding process. Now, they are ... individuals looking to make early stage investments in the microbiome space. In ...
(Date:11/24/2015)... ... 2015 , ... The United States Golf Association (USGA) today announced Dr. Bruce ... Presented annually since 1961, the USGA Green Section Award recognizes an individual’s distinguished service ... , Clarke, of Iselin, N.J., is an extension specialist of turfgrass pathology in the ...
(Date:11/24/2015)... SAN DIEGO , Nov. 24, 2015 Halozyme Therapeutics, ... Jaffray Healthcare Conference in New York on ... Dr. Helen Torley , president and CEO, will provide a ... New York at 1:00 p.m. ET/10:00 a.m. ... communication and investor relations, will provide a corporate overview. --> ...
Breaking Biology Technology: