Navigation Links
How plants fine tune their natural chemical defenses
Date:9/7/2008

LA JOLLA, CA Even closely related plants produce their own natural chemical cocktails, each set uniquely adapted to the individual plant's specific habitat. Comparing anti-fungals produced by tobacco and henbane, researchers at the Salk Institute for Biological Studies discovered that only a few mutations in a key enzyme are enough to shift the whole output to an entirely new product mixture. Making fewer changes led to a mixture of henbane and tobacco-specific molecules and even so-called "chemical hybrids," explaining how plants can tinker with their natural chemical factories and adjust their product line to a changing environment without shutting down intracellular chemical factories completely.

The findings not only gave the Salk scientists a glimpse of the plants' evolutionary past, but may help them fine-tune the production of natural and environmentally friendly fungicides and pesticides as well as new flavors and fragrances by turning "enzymatic knobs" in the right direction.

Trying to make the best of their real estate, plants rely on an impressive arsenal of volatile and nonvolatile molecules, which diffuse easily through the membranes of the cells that produce them to communicate and interact with the outside world. Often highly aromatic and exceedingly specific for a particular ecological niche, these chemicals attract pollinators, summon natural predators of pests, defend against competitors or, through their antimicrobial properties, protect against natural plant pathogens such as fungi and bacteria.

"Most people are familiar with the word biodiversity, but 'chemodiversity,'the extraordinary tapestry of natural chemicals found in plantsis just as important for life, the appearance of new species and the survival of many different ecosystems on the earth," says Howard Hughes Medical Institute investigator Joseph P. Noel, Ph.D, director of the Jack H. Skirball Center for Chemical Biology and Proteomics, who led the stud
'/>"/>

Contact: Gina Kirchweger
Kirchweger@salk.edu
858-453-4100 x1340
Salk Institute
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. NC State first university in nation to offer canine bone marrow transplants
2. Bitter-tasting nectar and floral odors optimize outcrossing for plants
3. Ikaria(R) Receives FDA Orphan Drug Designation for Inhaled Carbon Monoxide for Delayed Graft Function in Solid Organ Transplants
4. UGA gets $2.5 million in grants to study plants to make biofuels
5. Tel Aviv University researchers root out new and efficient crop plants
6. Ikaria(R) Receives FDA Orphan Drug Designation for Inhaled Carbon Monoxide for Delayed Graft Function in Solid Organ Transplants
7. UT Knoxville professor finds unexpected key to flowering plants diversity
8. U of T discovers environmental factors linked to sex ratio of plants
9. New study finds that some plants can adapt to widespread climate change
10. Plants in the fourth dimension
11. Mate choice in plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/28/2014)... Roald Amundsen became the first man to reach the ... years later, an international team of scientists led by ... proven that air pollution from industrial activities arrived long ... from widely spaced locations around the Antarctic continent, including ... and precise reconstruction to date of lead pollution over ...
(Date:7/27/2014)... in vitro study has revealed that nicotine and cotinine, ... caused by a certain carcinogen in smoke. , The ... of tobacco leaves and ultimately ends up in the ... lung and liver, where it is activated by a ... in mice has revealed that nicotine can partially interfere ...
(Date:7/27/2014)... that wiped them out if it had taken place ... A fresh study using up-to-date fossil records and improved ... narrative of the prehistoric creatures, demise, some 66 million ... million years before a 10km-wide asteroid struck what is ... extensive volcanic activity, changing sea levels and varying temperatures. ...
Breaking Biology News(10 mins):Industrial lead pollution beat explorers to the South Pole by 22 years and persists today 2Industrial lead pollution beat explorers to the South Pole by 22 years and persists today 3Nicotine found to inhibit DNA-strand break caused by a certain carcinogen in smoke 2Dinosaurs fell victim to perfect storm of events, study shows 2
... to make proteins, key building blocks of all organisms, ... instructions for assembling them. An Iowa State ... marking where these instructions are located in a cell,s ... Journal of Biological Chemistry , Michael Shogren-Knaak, assistant professor ...
... Service scientists have completed a study on a beetle that ... attacked 67 percent of the oak trees in an area ... in the current issue of The Pan-Pacific Entomologist ... so rare it does not even have an accepted common ...
... of Eve to the venomous murder of the mighty Thor, ... of mischief and misery. The worldwide prominence of ... to the serpentbut why, when so few of us have ... Davis, anthropology professor Lynne A. Isbell suggests, lies in the ...
Cached Biology News:New Southern California beetle killing oaks 2
(Date:7/28/2014)... 2014 Appistry, Inc. , a ... the power of genomics to next-generation medicine, announced today ... Challenge . , Two Appistry staff will be ... Center for Genome Resources, and Mr. Neil Miller, director ... Kansas City. Rounding out the panel are Appistry’s Dr. ...
(Date:7/28/2014)... 28, 2014 It’s a hard truth: Nearly ... to further their post-secondary education are failing to obtain a ... this year. And according to an analysis by The ... veteran students’ uninformed choice of college majors, which leads to ... the study: Some 51.7 percent of post-9/11 veterans using ...
(Date:7/28/2014)... July 28, 2014 The global market ... by 2020, according to a new study by Grand ... rising demand for effective vaccines and drugs in an ... medical needs is expected to drive market demand over ... enhance agricultural productivity via the use of genetically engineered ...
(Date:7/28/2014)... 2014  InterMune, Inc. (NASDAQ: ITMN ) ... 2014 financial results at the close of the U.S. ... and webcast will be hosted by InterMune at 4:30 ... investors and others may participate in the conference call ... ID#21728775. A replay of the webcast and teleconference will be ...
Breaking Biology Technology:Appistry Names Industry Experts from the National Center for Genome Resources and Mercy Children's, Kansas City, to Judge Pipeline Challenge Competition 2Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 2Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 3Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 4Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 2Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 3Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 4InterMune to Release Second Quarter Financial Results on August 6 2
... , , , , , ... in eukaryotic cell cultures , requires double-stranded molecules known ... licensed supplier of siRNA, offering a custom , ... directed against common target genes, and a Cancer , ...
... For transfection of eukaryotic cells with RNA and siRNA , , , , , , ... Kit Contents , Storage and Stability ... Technical Assistance , Product Use Limitations ... Safety Information , ...
... QIAshredder spin columns are designed for simple and rapid homogenization , of cell and tissue lysates. ... , , Format: , ... , , Sample source: , ... plant cell or tissue lysates, white blood cell lysates, , ...
Cached Biology Technology:RNAi Gene Silencing System 2RNAi Gene Silencing System 3TransMessenger Transfection Reagent Handbook 2TransMessenger Transfection Reagent Handbook 3TransMessenger Transfection Reagent Handbook 4TransMessenger Transfection Reagent Handbook 5TransMessenger Transfection Reagent Handbook 6TransMessenger Transfection Reagent Handbook 7TransMessenger Transfection Reagent Handbook 8TransMessenger Transfection Reagent Handbook 9TransMessenger Transfection Reagent Handbook 10TransMessenger Transfection Reagent Handbook 11TransMessenger Transfection Reagent Handbook 12TransMessenger Transfection Reagent Handbook 13TransMessenger Transfection Reagent Handbook 14TransMessenger Transfection Reagent Handbook 15TransMessenger Transfection Reagent Handbook 16TransMessenger Transfection Reagent Handbook 17TransMessenger Transfection Reagent Handbook 18TransMessenger Transfection Reagent Handbook 19TransMessenger Transfection Reagent Handbook 20TransMessenger Transfection Reagent Handbook 21TransMessenger Transfection Reagent Handbook 22TransMessenger Transfection Reagent Handbook 23TransMessenger Transfection Reagent Handbook 24TransMessenger Transfection Reagent Handbook 25QIAshredder Homogenizer 2
Viral CMV UL146/vCXC1 Biotinylated Affinity Purified PAb...
Cyan Standard is 7-hydroxy-4-trifluoromethylcoumarin...
... small volume applications, including pediatric, neonatal, geriatric, general adult, veterinary and experimental animals. Automatic Calibration with ... ... ... ...
X-Gal, 100 mg. 5-Bromo-4-chloro-3-indolyl-b-d-galactoside.Histochemical substrate for b-galactosidase, used in blue/white screening.Store at -20 C. Protect from moisture. Category: Nucleotides & Enzy...
Biology Products: