HOME >> BIOLOGY >> NEWS
Plants respond similarly to signals from friends, enemies

Two soil-dwelling strangers a friend and a foe approach a plant and communicate with it in order to enter a partnership. The friend wants to trade nitrogen for food. The foe is a parasite that wants to burrow in and harm the plant.

In a new finding published in Proceedings of the National Academy of Sciences, researchers at North Carolina State University have found that the two strangers communicate with the plant in very similar ways. The plant's responses to both friend and foe are also remarkably similar.

Using high-tech microscopy and florescent imaging techniques that allow for real-time, three-dimensional study in living cells over time, the NC State researchers discovered that the model legume Lotus japonicus responded similarly to signals from both rhizobia, the friends that fix nitrogen for the plant, and root-knot nematodes, the parasitic foes that want to harm the plant. Signals from both outsiders induce rapid changes in distribution of the plant's cytoskeleton, which is part of a pathway that leads to a series of growth changes that include the formation of either nodules housing bacteria or giant cells from which the nematodes feed.

The scientists also discovered that, like rhizobia and contrary to popular belief, the root-knot nematode signals plants from a distance and therefore does not need to attach itself to the plant to elicit a response.

When the researchers studied L. japonicus plants missing the receptors that receive signals from other organisms certain genes in the plant were modified to accomplish this they discovered that the plants failed to respond to signals from both friend and foe, and therefore no changes were viewed in the plant's cytoskeleton.

"This exquisite system that plants have developed to allow beneficial interactions with other organisms like rhizobia is being exploited by nematodes," says Dr. David Bird, associate professor of plant pathology, co-director of NC State's Center
'"/>


22-Feb-2005


Page: 1 2

Related biology news :

1. Plants recognize their siblings, biologists discover
2. Plants that produce more vitamin C may result from UCLA-Dartmouth discovery
3. Plants tag insect herbivores with an alarm
4. Plants with male and bisexual flowers on the same plant are better mothers
5. Plants do not emit methane
6. Plants management of nutrient suggests environmental remedies
7. Plants point the way to coping with climate change
8. Plants, plasmids and possibilities -- Methods permit functional gene studies in plants
9. Plants give up answers in the war on bacteria
10. Plants tell caterpillars when its safe to forage
11. Plants role in global warming re-examined in ORNL Science paper

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Plants respond similarly signals from friends enemies

(Date:7/22/2014)... of Standards and Technology (NIST), working with the ... for analyzing biological cells and tissues based on ... is an advanced form of the widely used ... that are 10,000 times stronger than obtained from ... obtained from comparable "coherent Raman" instruments, and uses ...
(Date:7/22/2014)... as disease causing agents, some viruses can perform ... shape the world we live in today, according ... of Microbiology. , "Viruses participate in essential Earth ... planet, from contributing to biogeochemical cycles, shaping the ... Marilyn Roossinck of Pennsylvania State University, a member ...
(Date:7/22/2014)... Stem cells offer much promise for treating damaged organs ... survival is poor, limiting their effectiveness. New methods are ... optimize their therapeutic function after transplantation, as described in ... a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. ... Open Access website . , In ...
Breaking Biology News(10 mins):Enhanced NIST instrument enables high-speed chemical imaging of tissues 2Enhanced NIST instrument enables high-speed chemical imaging of tissues 3Report on viruses looks beyond disease 2
(Date:7/22/2014)... OHAUS Corporation, a leading worldwide manufacturer ... scales, proudly announces its Explorer line of analytical ... 2014 “Readers' Choice” Award for best balance. ... was voted the best laboratory balance by the ... “excellence in product design and performance for the ...
(Date:7/22/2014)... SHENZHEN , Cina, 22 luglio 2014 ... una filiale di BGI, la maggiore organizzazione di genomica ... nuovo servizio di sequenziamento dell,intero esoma umano con base ... Complete Genomics, molto apprezzata nel settore per ... con il 99.999% di precisione e una rilevazione altamente ...
(Date:7/22/2014)... PITTSBURGH , July 22, 2014 ... maker of MD-Cu 29 antimicrobial copper announces Pullman ... to the first EPA-registered antimicrobial solid touch surface, at ... than 99.9% of MRSA, E-coli and other bacteria within 2 ... hospital in protecting against bacteria and infectious diseases in ...
(Date:7/22/2014)... , July 22, 2014  The Broad Institute ... from philanthropist Ted Stanley aimed at ... new treatments based on molecular understanding to hundreds ... The Stanley commitment – the largest ... for scientific research in general – will support ...
Breaking Biology Technology:OHAUS Explorer Voted “Best Balance” in Laboratory Equipment’s 2014 Readers’ Choice Awards 2BGI Tech lancia un servizio di sequenziamento dell'intero esoma umano sulla piattaforma avanzata di Complete Genomics 2Pullman Regional Hospital changes more than 1,100 touch points to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 2Pullman Regional Hospital changes more than 1,100 touch points to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 3$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 2$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 3$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 4$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 5$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 6$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 7$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 8$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 9$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 10
Cached News: