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:10/16/2014)... monocultures can be cultivated efficiently, they are anything ... caused by monoculture cultivation is becoming increasingly evident. ... crop form and are regarded as the sole ... – quite wrongfully, finds Bernhard Schmid, an ecology ... a novel form of agriculture and forestry. After ...
(Date:10/15/2014)... pandemic risk from strains of influenza virus increases with ... to become complacent that the most substantial threats have ... Influenza pandemics arise when a new virus strain – ... – spreads in the human population. There have been ... worst of which – the 1918 Spanish Flu – ...
(Date:10/15/2014)... NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ... growing mobile commerce market releases photos and video of the recent ... October 13 th . Gino Pereira , ... angel investor Mr. Chad A. Verdi rang the bell.  ... his investors and employees "for their work and dedication in bringing ...
Breaking Biology News(10 mins):Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 3
(Date:10/22/2014)... HONG KONG , Oct. 22, 2014 ... enterprise, announced today that rare disease expert John ... president, research. Dr. McKew brings more than two decades ... at the National Institutes of Health, Wyeth Research and ... McKew will lead aTyr,s efforts to expand and translate ...
(Date:10/20/2014)... 2014 Asterias Biotherapeutics, Inc. (NYSE MKT: ... a Notice of Grant Award (NGA) with the ... 1, 2014.  The NGA provides for the immediate ... of additional grant funds pursuant to the previously ... development of Asterias, product, AST-OPC1. The grant provides ...
(Date:10/20/2014)... 20, 2014 PureTech , a science ... healthcare problems, announced today the closing of a ... from Invesco Perpetual, a $120 Billion group of ... PureTech,s existing pipeline forward and to advance new ... scientific creativity to really go for the big ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The Latin ... the market in Latin America with analysis and forecast ... in 2013, and is expected to reach $2,366.8 million ... to 2018. , Browse through the TOC of the ... idea of the in-depth analysis provided. It also provides ...
Breaking Biology Technology:aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3
Cached News: