HOME >> BIOLOGY >> NEWS
The enemy of my enemy is my friend

When plants are damaged by herbivorous insects, they release a plume of volatile chemicals. In the laboratory, these can function as a "call for help", since they attract enemies of the herbivores (predators and parasitoids). Kessler and Baldwin from the Max-Planck-Institute for Chemical Ecology in Jena now (March 16, 2001, Science) demonstrate for the first time that: 1) this "indirect defense" also functions in nature and; 2) that only specific constituents of the volatile plume are required. Specifically, the study demonstrates that herbivore-induced volatiles from wild tobacco in the Great Basin Desert of SW USA attract predatory bugs to the larvae and eggs of the plant's dominant herbivore, the five-spotted hawkmoth. Moreover, these same volatile signals deter egg-laying moths. Plants solve their pest problems by recruiting backup forces among members of their ecology community with volatile alarm signals.

Plants are not passive in the face of attack (enemies include pathogens, herbivorous insects, grazing mammals, etc). In response, they rapidly increase the production of a suite of chemical defenses that poison, repel or slow the growth of their attackers (see Karban and Baldwin, 1997 for examples). Many of these direct defenses, which can be very effective, serve as models for pest control strategies in agriculture. However, these direct defenses also create problems for plants: 1) herbivorous insects rapidly evolve resistance to these defenses, which 2) allows the insects to
'"/>

Contact: Andre Kessler and Ian T. Baldwin
kessler@ice.mpg.de
49-3641-643660
Max-Planck-Gesellschaft
13-Mar-2001


Page: 1 2 3 4 5

Related biology news :

1. On tap: Genomic sequence of an enemy of beer and bread
2. Study: A little help from friends makes wounds heal faster
3. Family-friendly, flexible and far-reaching
4. Chemical Society announces EPA awards for environmentally friendly technology
5. Making a friendlier mosquito
6. Ancient Greeks help scientists build environmentally friendly nano devices
7. Viruses may be environmentally friendly decontaminants
8. Mans best friend may be even better
9. Turning foe into friend with lentiviral vectors
10. UCR scientists modify existing chemical scrubber to environmentally friendly, all-natural filter
11. Wilmington chemist wins national award for environmentally friendly processes

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/15/2017)... Aug. 15 2017   ivWatch LLC , a medical device ... therapy, today announced receipt of its ISO 13485 Certification, the global ... International Organization for Standardization (ISO®). ... ivWatch Model 400 Continuous Monitoring device for the early detection of ... "This is an important milestone ...
(Date:7/20/2017)... DAL ) customers now can use fingerprints instead of their boarding ... ... biometrics to board aircraft at Reagan Washington National Airport ... Delta,s biometric boarding pass experience that launched in May at the ... to allow eligible Delta SkyMiles Members who are enrolled in CLEAR to ...
(Date:6/30/2017)... 30, 2017 Today, American Trucking Associations ... of face and eye tracking software, became the ... program. "Artificial intelligence and advanced ... monitor a driver,s attentiveness levels while on the ... to detect fatigue and prevent potential accidents, which ...
Breaking Biology News(10 mins):
(Date:8/18/2017)... ... August 18, 2017 , ... ... will feature Federal Hybrids, Inc. in an upcoming episode, scheduled to broadcast fourth ... Farmer will explore Federal Hybrids, the independent, family-owned seed company. Educating audiences about ...
(Date:8/18/2017)... ... August 18, 2017 , ... OAI, a ... MEMS, and Microfluidics Industries, announces the new Model 800E front and backside, semi-automatic ... automated production mask aligners. OAI has already received and installed several orders ...
(Date:8/17/2017)... ... August 17, 2017 , ... ... market news outlet had provided a research update on Aytu Bioscience and cited ... product. , According to Soulstring, prescription rates for Natesto® have more than doubled ...
(Date:8/17/2017)... ... August 17, 2017 , ... Cynvenio Biosystems, Inc., a leader ... launch of a new breast cancer monitoring study in partnership with Saint Luke’s ... potential for early detection of recurrent breast cancer using LiquidBiopsy and natural killer ...
Breaking Biology Technology:
Cached News: