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nafex - Re: [NAFEX] Fwd: Plum-Pox-Resistant Trees Move Forward

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  • From: hans brinkmann <hans-brinkmann@t-online.de>
  • To: North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Fwd: Plum-Pox-Resistant Trees Move Forward
  • Date: Thu, 26 Jul 2007 02:38:59 +0200


Hallo Lon,
thank you for your information!
I understood, they developed already a gen manipulated plum before they have tried different resistant cultivars at the USA...
And now - just short before "a crisis in this country" - they want to sell this wonderful new plum. Bon appetit!
"HoneySweet" sounds like the word: "liberty-link" like one American company is calling the "wonderful connection" between Roundup, the gen manipulated plants and the company at the EU.

Since some decades we have also the plum pox at Germany. It came from Bulgaria 1918!
PPV has never been a big problem because professional producers are regularly spraying and we (and you too) have had already resistant plum cultivars and we produced already new resistant plum cultivars additionally.Without gen manipulation.
We have many plum cultivars which are considered PPV resistant (the fruits AND the leaves and the wood). Professionals need usually only fruit-resistance...
Anna Späth
Bühler Frühzwetsche
Cacaks Beste
Cacaks Frühe
Cacaks Schöne
Graf Brühl
Herman
Sanctus Hubertus
Ruth Gerstetter
Gräfin Cosel
Valor
and many others
e.g. also different Nancy Mirabelle

Your  US Stanley and Ontario
should be also good to medium resistant.

But the very new plum "Jojo" is absolute 100%ly resistant (without gen manipulation)!

Many (or some) of your USA apricots are also PPV resistant.

ciao
hans                           Germany



Lon J. Rombough schrieb:


Begin forwarded message:

From: ARS News Service <NewsService@ars.usda.gov>
Date: July 25, 2007 7:42:21 AM PDT
To: ARS News subscriber <lonrom@hevanet.com>
Subject: Plum-Pox-Resistant Trees Move Forward
Reply-To:
ARS News Service <NewsService@ars.usda.gov>

STORY LEAD:
Plum-Pox-Resistant Trees Move Forward
___________________________________________

ARS News Service
Agricultural Research Service, USDA
Kim Kaplan, (301) 504-1637, kim.kaplan@ars.usda.gov
July 25, 2007
--View this report online, plus photos and related stories, at www.ars.usda.gov/is/pr
___________________________________________

Plum trees with resistance to plum pox (PPV), a virus that can devastate stone fruit, have moved a step closer to reality, according to the Agricultural Research Service (ARS), which is leading the project.

The U.S. Department of Agriculture's Animal and Plant Health Inspection Service (APHIS), which has regulatory authority over genetically engineered organisms, recently "deregulated" HoneySweet, as the PPV-resistant plum tree is named. This means APHIS had determined that the tree is not a plant pest and that it will have no significant impact on other plants.

Deregulated products have a history of safe use in U.S. agriculture. APHIS has overseen the deregulation of more than 70 genetically engineered plants, including corn, cotton, rapeseed (canola), soybean, flax, sugar beet and squash. In September 1996, papaya became the first genetically engineered tree to be deregulated.

ARS is now taking the next step in HoneySweet's development, which is for cooperators such as universities to plant small quantities of the trees to study how they grow under a variety of conditions, a process commonly undertaken for new varieties.

A standard genetic engineering technique was used to introduce a gene for the PPV coat protein into cells extracted from plum seeds. Cells that incorporated the new gene into the plum DNA were then regenerated and grown into complete plum trees. These trees have the new gene in their DNA and are resistant to PPV through a process called gene silencing.

While HoneySweet itself produces high-quality fruit of commercial standard, it may also be used as breeding stock to introduce PPV resistance into other plum breeding lines for future variety development. Fruit from HoneySweet or its progeny will not be eaten or sold without further regulatory approval by the U.S. Food and Drug Administration and the U.S. Environmental Protection Agency.

PPV was first identified in the United States in Pennsylvania in 1999 and has since been found in New York and Michigan. To ensure that PPV was eradicated during the 1999 outbreak, over 1,600 acres of commercial orchards and homeowner trees had to be destroyed at a cost of more than $40 million.

But since developing a PPV-resistant plum tree is not a simple or quick process, ARS has not waited until plum pox has a major presence in the United States to do the research. Rather, ARS has taken the proactive step of developing a PPV-resistant tree and doing the testing required to allow genetically engineered trees to become available before plum pox precipitates a crisis in this country.

More information about the HoneySweet plum tree can be found at http://www.ars.usda.gov/is/br/plumpox.

ARS is USDA's chief scientific research agency.

___________________________________________

This is one of the news reports that ARS Information distributes to subscribers on weekdays. Send feedback and questions to the ARS News Service at NewsService@ars.usda.gov.

* To change the address, please notify the ARS News Service at NewsService@ars.usda.gov.
* To unsubscribe, send a blank email to leave-130031-22236Y@ls.ars.usda.gov.
* Other ARS news products are available by e-mail. For details about them or to subscribe, please contact the ARS News Service or visit http://www.ars.usda.gov/is/pr/lists.htm.
__________________________________________
ARS News Service, Information Staff, Agricultural Research Service
5601 Sunnyside Ave., Room 1-2251, Beltsville MD 20705-5128
NewsService@ars.usda.gov | www.ars.usda.gov/news
Phone (301) 504-1638 | fax (301) 504-1486



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