Navigation Links
Host change alters toxic cocktail
Date:3/11/2011

This release is available in German.

Leaf beetles fascinate us because of their amazing variety of shapes and rich coloring. Their larvae, however, are dangerous plant pests. Larvae of the leaf beetle Chrysomela lapponica attack two different tree species: willow and birch. To fend off predator attacks, the beetle larvae produce toxic butyric acid esters or salicylaldehyde, whose precursors they ingest with their leafy food. Scientists of the Max Planck Institute for Chemical Ecology in Jena, Germany, now found that a fundamental change in the genome has emerged in beetles that have specialized on birch: The activity of the salicylaldehyde producing enzyme salicyl alcohol oxidase (SAO) is missing in these populations, whereas it is present in willow feeders. For birch beetles the loss of this enzyme and hereby the loss of salicylaldehyde is advantageous: the enzyme is not needed anymore because its substrate salicyl alcohol is only present in willow leaves, but not in birch. Birch beetles can therefore save resources instead of costly producing the enzyme. First and foremost, however, the loss of salicylaldehyde also means that birch feeding populations do not betray themselves to their own enemies anymore, who can trace them because of the odorous substance. (PNAS Early Edition, DOI 10.1073/pnas.1013846108)

Defensive glands and toxic cocktails

Beetle larvae are part of a food chain. They are attacked by predatory insects and parasites, such as hover flies and bugs, as well as infested by bacteria and fungi. To protect themselves some leaf beetle larvae have developed interesting defense mechanisms, which function externally and metabolically: In case of danger, they emit substances from their defensive glands in form of vesicles (see picture; a short video is also available on http://
'/>"/>

Contact: Wilhelm Boland
boland@ice.mpg.de
49-364-157-1200
Max Planck Institute for Chemical Ecology
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Pathology study tracks uterine changes with mifepristone
2. Mapping human vulnerability to climate change
3. Virginia Tech shares in grant to study effects of climate change on southern pine forests
4. Examining climate change effects on wheat
5. Climate change affecting food safety
6. NIFA announces grants to study the effects of climate change on agricultural and forest production
7. Invasive plants can create positive ecological change
8. Cross-border conservation vital to protect birds in a climate-change world
9. Wolverines threatened by climate change, earlier springs
10. Wolverine population threatened by climate change
11. Island-scale study reveals climate-change effects
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Host change alters toxic cocktail
(Date:6/30/2015)... 2015 Genisphere announced Tom ... help further develop Genisphere,s therapeutics capabilities and portfolio. Mr. ... spent much of the last 25 years in leadership ... and Johnson & Johnson. Tom started his career in ... Corporate Finance. He graduated from Dartmouth College with a ...
(Date:6/25/2015)... 25, 2015  TAKE Solutions Ltd., a global business ... United States Patent and Trademark Office (USPTO) for its ... TAKE Solutions, Clinical Accelerators to reduce the time taken ... to standardization without the accelerators), thus reducing time to ... At the heart of the patented Clinical Data ...
(Date:6/24/2015)... , June 24, 2015 Biometry authentication ... emerging biometric password solution one face in. ... one face in, entering the expanding ... and affordable multifactor-authentication biometric answer to the password ... provided in partnership with KeyLemon, one face in ...
Breaking Biology News(10 mins):Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3TAKE Solutions Awarded Patent By USPTO 2KeyLemon Announces Partnership With Biometric Password Solution onefacein 2
... plate tectonics on Earth; Arctic Ocean,s role in the ... Olduvai Basin lake cycles and survival of early hominins; ... relationship between earthquakes and melting glaciers; monitoring Mt. Etna ... end of the PETM. The GSA TODAY science article ...
... in eastern Australia now have greater access to the ... NSW Department of Primary Industries (DPI). Trials undertaken ... cold storage at temperatures of 2 or 3C can ... 14 to16 days. Cold treatment at these temperatures ...
... declining food prices driven down by unprecedented advances in ... for wheat have tripled and those for maize and rice ... prices will fall soon. On the contrary, economists expect larger ... change and its devastating impacts on agriculture adding greatly to ...
Cached Biology News:December GEOLOGY and GSA TODAY media highlights 2December GEOLOGY and GSA TODAY media highlights 3December GEOLOGY and GSA TODAY media highlights 4December GEOLOGY and GSA TODAY media highlights 5December GEOLOGY and GSA TODAY media highlights 6December GEOLOGY and GSA TODAY media highlights 7December GEOLOGY and GSA TODAY media highlights 8December GEOLOGY and GSA TODAY media highlights 9December GEOLOGY and GSA TODAY media highlights 10Cold treatment opens doors for citrus exports to Japan 2Agriculture experts meet in Beijing to examine impacts of food prices and climate change on farmers 2
(Date:7/1/2015)... ... July 01, 2015 , ... The next-generation sequencing (NGS) clinical market is ... the molecular diagnostics industry. BCC Research reveals in its new report that the market ... costs, and a growing need for better diagnostics as part of a molecular diagnostics ...
(Date:7/1/2015)... PALO ALTO, Calif. , July 1, 2015 ... company focused on the development of groundbreaking drugs ... sclerosis (ALS), announced today that Robert G. ... Research Center at Sutter Health,s California Pacific Medical ... from The ALS Association for $1.5 million to ...
(Date:7/1/2015)... 2015 Isagenix International, a leading global health ... three Silver, and three Bronze Stevie® Awards at the ... Chicago this month.The American Business ... program in the U.S. "Winning is ... developing leaders, cultivating talent, creating a unified team, and ...
(Date:7/1/2015)... 2015 InferMed , ... will augment ... clinical s olutions suite   Elsevier ... products and services, announced today the acquisition of  InferMed , ... technology company. InferMed,s Arezzo technology supports clinicians in ...
Breaking Biology Technology:NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 2Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 3Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 4Isagenix Earns Nine American Business Awards 2Isagenix Earns Nine American Business Awards 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 2Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 4
... (Nasdaq: MNKD ) today announced that Matthew ... President and Chief Financial Officer,effective April 21, 2008. ... Chief Operating Officer, and will serve on MannKind,s,executive ... retirement of Dick Anderson, who has now transitioned ...
... (Nasdaq: KOSN ) presented data on its ... of target,specificity, strong binding affinity and potency, a ... and safety in murine xenograft,and orthotopic models., ... stabilize and/or activate a,number of proteins required for ...
... Laboratories, a national,clinical and anatomic pathology reference laboratory and ... that,company co-founder Carl R. Kjeldsberg, MD, will retire as ... Kjeldsberg has held the position,since 1993 and will continue ... Effective, July 1, 2009, Edward R. Ashwood, MD, ...
Cached Biology Technology:Matthew J. Pfeffer Joins MannKind as Corporate Vice President and Chief Financial Officer 2Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 2Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 3Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 4ARUP Laboratories CEO and Co-Founder Announces Retirement 2
BDFastImmune? IFN-gamma /CD69/CD4/CD3 Storage Temperature: Refrigerate(2 to 8C)...
PKC (pSer345), phospho-specific...
Rabbit polyclonal to IRS1 (phospho S636) ( Abpromise for all tested applications). entrezGeneID: 3667 SwissProtID: P35568...
Rat integrin a6b1, mainly associated with epithelial cells. Does not react with rat fibroblasts....
Biology Products: