Navigation Links
Plant communication: Sagebrush engage in self-recognition and warn of danger
Date:6/19/2009

DAVIS--"To thine own self be true" may take on a new meaningnot with people or animal behavior but with plant behavior.

Plants engage in self-recognition and can communicate danger to their "clones" or genetically identical cuttings planted nearby, says professor Richard Karban of the Department of Entomology, University of California, Davis, in groundbreaking research published in the current edition of Ecology Letters.

Karban and fellow scientist Kaori Shiojiri of the Center for Ecological Research, Kyoto University, Japan, found that sagebrush responded to cues of self and non-self without physical contact.

The sagebrush communicated and cooperated with other branches of themselves to avoid being eaten by grasshoppers, Karban said. Although the research is in its early stages, the scientists suspect that the plants warn their own kind of impending danger by emitting volatile cues. This may involve secreting chemicals that deter herbivores or make the plant less profitable for herbivores to eat, he said.

What this research means is that plants are "capable of more sophisticated behavior than we imagined," said Karban, who researches the interactions between herbivores (plant-eating organisms) and their host plants.

"Plants are capable of responding to complex cues that involve multiple stimuli," Karban said. "Plants not only respond to reliable cues in their environments but also produce cues that communicate with other plants and with other organisms, such as pollinators, seed disperses, herbivores and enemies of those herbivores."

In their UC Davis study, Karban and Shiojiri examined the relationships between the volatile profiles of clipped plants and herbivore damage They found that plants within 60 centimeters of an experimentally clipped neighbor in the field experienced less leaf damage over the season, compared with plants near an unclipped neighbor. Plants with root contact between neighbors, but not air contact, failed to show this response.

"We explored self-recognition in the context of plant resistance to herbivory ," he said. "Previously we found that sagebrush (Artemisa tridentata) became more resistant to herbivores after exposure to volatile cues from experimentally damaged neighbors."

The ecologists wrote that "naturally occurring herbivores caused similar responses as experimental clipping with scissors and active cues were released for up to three days following clipping. Choice and no-choice experiments indicated that herbivores responded to changes in plant characteristics and were not being repelled directly by airborne cues released by clipped individuals."

In earlier research, Karban found that "volatile cues are required for communication among branches within an individual sagebrush plant. This observation suggests that communication between individuals may be a by-product of a volatile communication system that allows plants to integrate their own systemic physiological processes."

The scientists made cuttings from 30 sagebrush plants at the UC Sagehen Creek Natural Reserve and then grew the cutting in plastic pots. They grew the cuttings at UC Davis and then placed the pots near the parent plant or near another different assay plant (control group) in the field.


'/>"/>

Contact: Kathy KeatleyGarvey
kegarvey@ucdavis.edu
530-754-6894
University of California - Davis
Source:Eurekalert  

Related medicine news :

1. Preclinical study suggests organ-transplant drug may aid in lupus fight
2. Study provides hope that some transplant patients could live free of antirejection drugs
3. Study provides hope that some transplant patients could live free of anti-rejection drugs
4. Advanced Age No Bar to Liver Transplant
5. Nanowire coating for bone implants, stents
6. Circulating fats kill transplanted pancreas cells, study shows
7. Latest DES Analysis Stresses Importance of Physicians Well-Trained in Implantation Technique and Patient Follow-Up
8. Innocoll Agrees the Sale of its CollaRx(R) GENTAMICIN SURGICAL IMPLANT and European Sales and Marketing Infrastructure to EUSA Pharma
9. Implantable device designed to detect, stop seizures under study at MCG
10. AtriCure Reports First Human Implant of the Cosgrove-Gillinov Left Atrial Appendage Occlusion System
11. Bone-growing nanomaterial could improve orthopaedic implants
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Plant communication: Sagebrush engage in self-recognition and warn of danger
(Date:12/7/2016)... ... December 07, 2016 , ... “Tomorrow Trump Goes To Washington”: ... greatness back to the presidency and to America. “Tomorrow Trump Goes To Washington” is ... much as she can for this country. , Nancy attributes her patriotic nature to ...
(Date:12/7/2016)... ... 2016 , ... “Fred Rides a Train” allows readers to tag along on ... Rides a Train” is the creation of published author, Janet Morrison, who has been ... Michigan. The "Fred, the Dog" series is her first attempt at writing for children. ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... annual Business Architecture Innovation Summit in Reston, VA on March 21-22, 2017. This ... share a range of experiences from a cross-section of industries such as financial ...
(Date:12/7/2016)... ... December 07, 2016 , ... NuevaCare, a leading home ... is proud to announce new city-specific pages as part of its ambitious website relaunch. ... they often look, first, for local agencies serving their city. The new site has ...
(Date:12/6/2016)... ... 06, 2016 , ... People with Parkinson’s disease and cognitive ... type of MRI, according to a study appearing online in the journal Radiology. ... characterized by tremors or trembling and stiffness in the limbs, impaired balance and ...
Breaking Medicine News(10 mins):
(Date:12/7/2016)... 7, 2016  Lannett Company, Inc. (NYSE: LCI ) ... Markets 2016 Prescription for Success Healthcare Conference on December 14, 2016 ... New York City . In addition, the ... Guggenheim Securities 4 th Annual Boston Healthcare Conference taking place ... ...
(Date:12/6/2016)... , Dec. 6, 2016 Radioisotopes are ... Radioisotopes are produced either by using nuclear research reactor ... the form of alpha, beta or gamma when changed ... are used in Nuclear medicine, specifically in medical diagnostics. ... diagnostic information about a human body,s functioning. Radiotherapy is ...
(Date:12/6/2016)... Dec. 6, 2016 Human Vaccines Market: ... region wise and country wise analysis of the ... manufacturers of human vaccines products, raw material suppliers, ... enter the market. The report provides qualitative ... market. Qualitative analysis comprises market dynamics, trends, product ...
Breaking Medicine Technology: