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Archive for the ‘Nematodes’ Category

NTV/NEBRASKA.TV

Posted: Apr 07, 2014 10:52 AM CDT
Updated: Apr 07, 2014 10:52 AM CDT

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Investigators from the state Department of Agriculture are on the lookout for pest-ridden potato seeds in an effort to protect Nebraska’s potato industry.

Two of the state’s three potato inspectors recently quarantined nine boxes of potato seeds at a Lincoln True Value hardware store because the store’s owners didn’t have paperwork needed to prove the seeds were free of the Columbia root-knot nematode worm. The pest eats roots of plants like grasses, legumes and cereals.

Ag Department spokesperson Christin Kamm says they take seriously the need to protect Nebraska’s potato industry.

 

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Reported by pestnet@yahoogroups.com by Grahame Jackson <gjackson@zip.com.au>

March 5th, 2014 in Biology / Ecology

This is a root of a banana plant infected by the nematode Radopholus similis. The roundworms infect the roots and kill root tissue.

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Credit: Rony Swennen and Dirk De Waele

The banana variety Yangambi km5 produces toxic substances that kill the nematode Radopholus similis, a roundworm that infects the root tissue of banana plants – to the frustration of farmers worldwide. The finding bodes well for the Grande Naine, the export banana par excellence, which is very susceptible to the roundworms.
The parasitic nematode Radopholus similis is the invisible nemesis of the banana plant, says Professor Dirk De Waele (Laboratory for Tropical Crop Improvement, KU Leuven), a co-author of the study: “This roundworm infects banana crops worldwide. The nematodes are invisible to the naked eye, but they can penetrate the roots of banana plants by the thousands. Once infected, these plants absorb less water and nutrients, resulting in yield losses of up to 75 percent. Lesions in the roots also make the plant more susceptible to other diseases. Eventually, the roots begin to rot. In the final stage of the disease, the plant topples over, its fruit bunch inexorably lost.”
Combating nematodes isn’t easy, adds Professor Rony Swennen (Laboratory for Tropical Crop Improvement, KU Leuven), another co-author: “Synthetic pesticides are toxic and expensive. Moreover, pesticides usually do not actually kill the nematodes, they just temporarily paralyze them. Nematodes can also build up resistance to pesticides.”

This is a banana field in Uganda planted with Grande Naine, a banana variety commonly sold in the supermarket. The nematode Radopholus similis infects the roots of banana plants. In the final stage of disease, the plant topples over and its fruit bunch is lost.

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Credit: Rony Swennen and Dirk De Waele

While the Grande Naine is very susceptible to nematodes, other varieties are known to be resistant to them. Enter the Yangambi km5, a variety first grown in the 1950′s at a Belgian research station in Yangambi, DR Congo. The researchers compared the two banana varieties and studied their defense responses to Radopholus similis. “Researchers have always wondered how the Yangambi km5 manages to fight off roundworms,” says De Waele. “This study goes a long way in answering that.”
With colleagues at the Max Planck Institute for Chemical Ecology (Germany), the KU Leuven researchers identified which metabolites are responsible for fighting off the nematodes. “We found nine different nematode-killing metabolites in Yangambi km5. These metabolites are also produced in the Grande Naine, but much more slowly and in lesser quantities. In that banana variety, the nematodes win the fight.”
The new knowledge of metabolites will be helpful in developing edible and pest-resistant banana varieties, says Swennen. “The next step is to screen other banana varieties for metabolites. This method could also be applied to other crops and other species of nematode. Nematodes pose a growing threat to rice production in Asia, for example. Our findings also provide the industry with perspectives to develop a generation of new pesticides against nematodes.”
The researchers’ findings were published in a recent issue of the journal PNAS.
More information: PNAS DOI: 10.1073/pnas.1314168110
Provided by KU Leuven

 

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Logo: Spiral nematode encircling African continent

2014 International Congress of Nematology – Cape Town, South Africa

The 6th International Congress of Nematology will be presented by the Nematology Society of Southern Africain (NSSA) during May 2014 in Cape Town, South Africa.

The website is open and we have logo for the 6th ICN meeting. Go and check everything on www.6thicn.com

Nematology Short Course – 2013

A short course in Nematology will be presented at the North-West University from 2 to 13 September 2013. More information will be made available by 28 February 2013.

Contact persons: Proffs Alex Mc Donald (alex.mcdonald@nwu.ac.za; Tel: 018 293 3749) and Driekie Fourie (driekie.fourie@nwu.ac.za; Tel: 018 293 3683).

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FIRST ANNOUNCEMENTICN Cape Town

6th INTERNATIONAL CONGRESS OF NEMATOLOGY
Ensuring the future of nematology by encouraging student participation, relying on experience and empowering developing nations to ensure global food security

4 – 9 May 2014

CAPE TOWN, SOUTH AFRICA

Cape Town is considered the mother city of South Africa, nestling on the slopes of the world famous Table Mountain. It lies between the looming crags of the Mountain and the deep blue sea of Table Bay. The city and its surroundings are blessed with an abundance of natural beauty, including the bulk of the indigenous plants of the Cape floral kingdom. It is further blessed with a mild Mediterranean climate.

The congress will commence on Sunday 4 May 2014 and the closing ceremony will take place on Friday, 9 May 2014. Plenary sessions, with plenary speakers as well as renowned keynote speakers who are experts in specific fields related to Nematology, will form an integral part of the programme. Within the specific fields, selected students will be encouraged to give presentations. Three to four sessions will run concurrently throughout the meeting. Poster sessions will also be included. The theme of the conference will be Ensuring the future of nematology by encouraging student participation, relying on experience and empowering developing nations to ensure global food security”

Before the conference starts we would like to invite all the energetic, young-at-heart Nematologists for a cycling or running experience in the beautiful landscape of Cape Town and surroundings – an excellent opportunity to meet some of the delegates and get to know the area!

The organizing committee would like to make it possible for students from all over the world to attend the meeting by providing student grants and reducing the registration fee.

All delegates will be accommodated in high standard hotels, within walking distance from the conference venue.   A list of hotels and other accommodation available will be included in the 2nd Announcement.

Field trips with different research backgrounds will take place on the Wednesday afternoon.

Excursions, at an additional cost, will be available to some scenic places, like Robben Island, Table Mountain, Cape Point, etc.   Booking for these are essential and more information in this regard will follow.

The company “Going Africa Conferencing” will be responsible for transport to and from the airport, accommodation, excursions, gala dinner, luncheons and teas.   More details will follow in the 2ndAnnouncement.

More information on the programme, accommodation, excursions and guidelines for abstracts, etc. will be posted on the conference web page as soon as it becomes available.

Should you have enquiries please direct them at Susie Prangley at:
Cell:  083 285 0505
Email:  susie@goingafricaconferencing.com

Kind regards,
Mieke Daneel
Chairperson: Congress committee
ICN Cape Town

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THE ANNOUNCEMENT, CALL FOR ABSTRACTS AND REGISTRATION

BOOKING FORM FOR THIS CONFERENCE ARE NOW AVAILABLE

 

 DEADLINE FOR CALL FOR ABSTRACTS IS 31 MARCH 2012

2nd International Symposium on Nematodes as Environmental Bioindicators
To be held at
Ghent University, Belgium
5-6 July 2012
BASIS points will be applied for

The Organising Committee of the 2nd International Symposium on Nematodes as Environmental Bioindicators (2ISNEB) are delighted to invite you to participate in this event which will take place on the 5th and 6th of July 2012 at Ghent University, Ghent, Belgium.This will be the second conference of its kind at an international level, after the success of its predecessor event in June 2007 at Heriot-Watt University, Edinburgh, UK, and it will happen under the auspices of the Association of Applied Biologists (http://www.aab.org.uk/).

Many anthropogenic factors have a negative impact on the quality of soil, air and water leading to detrimental environmental changes. This conference will bring together experts working to understand the response of key food web organisms to these changes. Scientists from across the world using a common platform, the phylum Nematoda, will present their studies on these environmentally important organisms to address questions of habitat and ecosystem changes at community, individual organism and molecular levels in terrestrial, freshwater and marine ecosystems. Furthermore, this event will aid towards the dissemination of information by ecologists who aim to understand the underlying mechanisms leading to community change. It is envisaged that it will disseminate high impact science that could influence not only other scientists, but also regulators and policy makers.

Themes for this symposium will include, but will not be limited to:

• Role of nematodes in ecosystems

• Nematode biodiversity

• Nematode community analyses: classical

• Nematode community analyses: molecular

• Nematode ecotoxicology and genotoxicity

• Transgenic nematode biosensors

• Environmental change and nematode gene expression

• Commercialisation potential of nematodes as bio-indicators

• Environmental monitoring and risk assessment using nematodes

• Sentinel nematode species

• Nematodes in terrestrial and aquatic (fresh water and marine) habitats

• Nematodes and sustainability

• Various land use effects on nematode communities and/or individual taxa

Participants are invited to contribute platform and poster presentations under (but not limited only to) the above themes; abstract submissions should take place by 31st January 2012.

Keynote Speakers include:

DR PHILLIP L WILLIAMS, Dean and Georgia Power Professor, College of Public Health, Univ. of Georgia, USA

DR SEBASTIAN HÖSS, Founder and CEO, ECOSSA, Germany

PROF. DEBORAH NEHER, Vermont University, USA

DR HANS HELDER, Wageningen University, the Netherlands

We would therefore like to ask you to book these dates in your diaries and come to this conference and also encourage your colleagues to attend. The success of this symposium will depend on your participation. Delegates will be given a great opportunity to present their work in this unique niche event, meet peer experts in the field and be updated on current development in this pertinent field.

Updates on important dates, instructions to contributors and registration will follow.

Warmest regards,

The Organising Committee of 2nd ISNEB

Thomae Kakouli-Duarte, Institute of Technology Carlow, Ireland

Michael J Wilson, AgResearch, New Zealand

Tom Moens, Ghent University, Belgium

Wim Bert, Ghent University, Belgium

Wilfrida Decraemer, Ghent University, Belgium

Hanne Steel, Ghent University, Belgium

Nic Smol, Ghent University, Belgium

Péter Nagy, Szent István University, Hungary

Jan Vanaverbeke, Ghent University, Belgium

Roy Neilson, The James Hutton Institute, UK

Presentations and posters from this Conference will be produced as Abstracts. Copies will be available to delegates at the Conference. Abstracts of offered presentations/posters can be submitted by mailing or faxing the attached sheet to the AAB Office, via email to Russell@aab.org.uk, or online via our web site at http://www.aab.org.uk. Click on CONFERENCES in the menu bar, then ABSTRACTS, then the title of Conference. Once you have registered as a user you can upload your details. Please indicate if your offer is for a poster or a platform presentation. Please ensure your POP UP BLOCKER is off, or the abstract may not load properly.

Registration fees are as follows:

AAB/University of Ghent Members                £265.00

    AAB/University of Ghent Retired Members   £225.00

AAB/University of Ghent Student Members  £180.00

Non Members                                               £320.00

Student Non Members                                 £200.00   

 

Delegates will be responsible for booking their own accommodation for the symposium.  A late booking fee of £30 will be added to registrations received after the 15 June deadline.  An administration fee of £30 will be applied to cancellations received by 15 June.  No cancellations accepted after 15 June.

 

Further information on the venue and accommodation possibilities is  available here

 

Please note that poster board sizes are 2m high, 1 m wide - A0 format (841mm x 1189 mm), portrait.

Why not join the Association and save on registration fees?

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Pestnet (http://www.pestnet.org): Free on-line Crop Protection and Quarantine Advisory Service

by
Grahame Jackson, Australia 

 

Pestnet (http://www.pestnet.org) is a free on-line crop protection and quarantine advisory service with more than 1000 members. Run entirely by volunteers, it was first established in 1999 for the Pacific. In 2001 it expanded to south Asia, and in 2003 helped set up CariPestnet for the Carribean. It is now open to anyone worldwide to join. Today, PestNet members come from more than 80 countries.

PestNet was established to help overcome the problems experienced by crop protection specialists, extension workers and farmers in remote locations or where agricultural services are poorly established. Pestnet addresses the constraints that are associated with sustaining agriculture and forestry-based livelihoods, particularly when pests and diseases abound and there is no advice readily available. Without fast advice, crops may be lost, or worse still, invasive organisms may become firmly established so that eradication is no longer an option.

Using the Yahoo! Group pestnet@yahoogroups.com, PestNet responds to questions on pathogens and insect pests of plants, and weeds. It provides identifications on-line, and gives out pest and incursion alerts, plant protection news and contents of journals as they become available. Since its inception, crop protection specialists and practitioners have posted more than 7500 messages, with currently up to 100 messages being posted per month.

Messages posted to PestNet are first screened by one of its five moderators (located in Australia, Fiji, New Zealand, Thailand and Uganda) to ascertain the relevance of the content. Queries – often accompanied by an image of the problem – typically receive several answers within 24 hours; hence the service is a very fast means of providing information to remote places which by ‘normal’ means would take days if not weeks.

More recently, PestNet realized that it had accumulated a wealth of information, which it needed to safeguard and make available to a wider audience. Although the messages are archived on Yahoo!Groups, people have to join both PestNet and Yahoo, and then they have to search individual emails to get at the information. To make life easier, PestNet has gone through the archives, summarized the discussions and put these on the PestNet website for anyone to see (http://www.pestnet.org/Summaries/tabid/1100/Default.aspx). Periodically, the summaries are updated.

Over the years, PestNet has been supported by a number of agencies, and it is pleasing to record these in appreciation for their help. The Australian Government Overseas Aid Program (AusAID) provided support through the Department of Agriculture, Fisheries and Forestry for leaflets, posters and the website; the Food and Agriculture Organization of the United Nations (FAO) gave funds to buy cameras and for PestNet to visit Pacific island countries to encourage people to join; and the Technical Centre for Agricultural and Rural Co-operation ACP-EU (CTA) assisted with the establishment of CariPestNet, as well as summarising the archive of messages.

Finally, if you would like to help out, and join PestNet, please do so. We want to expand, and that means having more experts. All you have to do is send an email to pestnet-subscribe@yahoogroups.com, saying who you are, what you do and the name of your organization. Hope to see you on-line!

Grahame Jackson
24 Alt street
Queens Park
NSW 2022
Australia

Phone: 612 9387 8030
Fax: 612 9387 8004
Mobile: 0412 994 206

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