Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gentech breakthough for ecological Chrysanthemums

14.12.2001


Researchers at Plant Research International in the Netherlands have achieved a breakthrough in the development of chrysanthemums with resistance to thrips, bringing the ecological cultivation of chrysanthemums a step closer. This is the conclusion of the thesis with which Seetharam Annadana, a Plant Research International guest member of staff from India, recently obtained his doctorate at Wageningen University. Annadana developed new techniques which make possible the genetic modification of two thirds of the available varieties of chrysanthemum. In addition, he identified better so-called promoters: genetic switches to ensure that the genes incorporated into the chrysanthemums will be sufficiently active.

With his thesis, Annadana has laid the grounds for effective genetic modification of the chrysanthemum. Researchers hope to develop chrysanthemums resistant to insects with the help of this technology. Being a major pest, thrips is generally regarded to be the main factor impeding the ecological production of chrysanthemums.

At present, the damage caused by thrips can only be adequately prevented using chemical pesticides. Consequently, various ecological practices cannot be applied, such as the use of certain biological control systems. The development of thrips-resistant chrysanthemums would entail using far less chemical pesticide, or even none at all.



As no chrysanthemum or wild relative has been found that is sufficiently resistant, hopes are rested on the use of genetic modification. Annadana improved the protocol for the genetic modification of chrysanthemums on a number of important points, and many existing varieties can now be effectively genetically modified.

Furthermore, he investigated what type of genes could be used to make chrysanthemums resistant to thrips. He discovered that genes encoding so-called protease inhibitors might be suitable. These substances inhibit the activity of certain enzymes in the digestive tract of the thrips. Many plants create protease inhibitors naturally when attacked by insects. Annadana tested the effectiveness of various inhibitors and found that egg production was reduced by as much as 50%.

Plant Research International has now started research on whether the incorporation of protease inhibiting genes can in fact lead to resistance to thrips.

Erik Toussaint | alphagalileo
Further information:
http://www.plant.wageningen-ur.nl/

More articles from Agricultural and Forestry Science:

nachricht New parsley virus discovered by Braunschweig researchers
17.05.2019 | Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH

nachricht Franco-German research initiative on low-pesticide agriculture in Europe
16.05.2019 | Leibniz-Zentrum für Agrarlandschaftsforschung (ZALF) e.V.

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: The hidden structure of the periodic system

The well-known representation of chemical elements is just one example of how objects can be arranged and classified

The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...

Im Focus: MPSD team discovers light-induced ferroelectricity in strontium titanate

Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.

Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...

Im Focus: Determining the Earth’s gravity field more accurately than ever before

Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.

The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...

Im Focus: Tube anemone has the largest animal mitochondrial genome ever sequenced

Discovery by Brazilian and US researchers could change the classification of two species, which appear more akin to jellyfish than was thought.

The tube anemone Isarachnanthus nocturnus is only 15 cm long but has the largest mitochondrial genome of any animal sequenced to date, with 80,923 base pairs....

Im Focus: Tiny light box opens new doors into the nanoworld

Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the nanolevel. Using a tiny box, built from stacked atomically thin material, they have succeeded in creating a type of feedback loop in which light and matter become one. The discovery, which was recently published in Nature Nanotechnology, opens up new possibilities in the world of nanophotonics.

Photonics is concerned with various means of using light. Fibre-optic communication is an example of photonics, as is the technology behind photodetectors and...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

 
Latest News

Novel communications architecture for future ultra-high speed wireless networks

17.06.2019 | Information Technology

Climate Change in West Africa

17.06.2019 | Earth Sciences

Robotic fish to replace animal testing

17.06.2019 | Ecology, The Environment and Conservation

VideoLinks
Science & Research
Overview of more VideoLinks >>>