REDesastres

-------- Forwarded Message --------

----- Mensaje reenviado de 
 Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
  -----
   Fecha: Thu, 21 Jan 2016 10:28:49 +0000
      De: 
 Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
 
Responder-A: 
 Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
 
 Asunto: PRO/PL> Bunchy top, banana - Australia: (NS)
    Para: 
 Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
 , 
 Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
 
BUNCHY TOP, BANANA - AUSTRALIA: (NEW SOUTH WALES)
*************************************************
A ProMED-mail post
<http://www.promedmail.org>
ProMED-mail is a program of the
International Society for Infectious Diseases
<http://www.isid.org>
Date: Tue 19 Jan 2016
Source: The Northern Star [edited]
<http://www.northernstar.com.au/news/bunchy-top-banana-disease-found-at-doon-doon/2903831/>
The biggest infection of banana bunchy top disease ever found by the
National Bunchy Top Project has seen 7500 banana plants destroyed near
Nimbin [New South Wales, North Coast region]. The plants were found on
an old plantation and were largely covered or surrounded by weed and
rainforest growth. Banana bunchy top disease in Australia is
restricted to an area in northern NSW and South East Queensland.
Project leader David Peasley said the plants were in clumps scattered
in very hilly terrain, and the regrowth made them impossible to
identify through aerial photography. "The disease had spread right
through the old plantation, and it may have been there for 20 years.
It was only discovered as we were suspicious that infections in a
commercial plantation must have been blowing in from nearby," he said.
"Our suspicions were confirmed when the plants were found, and only a
high cliff had stopped any considerable spread of the disease."
"We have made excellent progress controlling bunchy top on commercial
plantations in NSW and have had great support from the community in
locating infected plants outside of plantations. This find highlights
the need for vigilance across the region if we are to ever have the
chance of eradicating the disease."
--
communicated by:
ProMED-mail
<
 Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
 >';
 document.write('');
 document.write(addy_text7284);
 document.write('<\/a>');
 //-->\n Esta dirección de correo electrónico está protegida contra spambots. Usted necesita tener Javascript activado para poder verla.
 ;
[_Banana bunchy top virus_ (BBTV) is the type member of the genus
_Babuvirus_ (family Nanoviridae) and only affects _Musa_ species. It
causes one of the most serious diseases of banana with symptoms of
chlorosis, stunting and death of the host plant. The virus is
spreading in Africa, Australasia and the Pacific Islands.
BBTV is transmitted by the banana aphid _Pentalonia nigronervosa_ in a
persistent manner. Infectious insects may be spread on plant material
or by air currents (as mentioned above). The virus is also spread with
infected suckers but cannot be transmitted by mechanical means (such
as cutting tools). Disease management is extremely difficult and may
include vector control, removal of inoculum, use of clean planting
material, and frequent scouting for new outbreaks. Eradication of
established BBTV from a planting or natural cluster of plants is
considered impossible, and the only option is to kill off all plants
in the group. Tolerant varieties can be used to enable some crop
production in infected areas, but these cultivars may still support
virus replication and thus serve as pathogen reservoirs.
There are 2 groups of BBTV isolates from different regions: the South
Pacific group (including Australia, Burundi, Egypt, Fiji, India, Tonga
and Western Samoa) and the Asian group (Philippines, Taiwan and Viet
Nam). The mean sequence difference between the 2 groups has been
reported as approximately 10 per cent (see link below). This is
thought to suggest that the virus has spread after the initial
movement of its hosts from the Indo-Malaysian region, where edible
_Musa_ species originated, to Africa and the Americas.
Maps
Australia (with states):
<http://www.webookaustralia.com/images/australiamap.jpg>
NSW regions:
<https://www.records.nsw.gov.au/state-archives/resources-for/people-in-regional-nsw/images/MapNSW.gif/image_preview>
Location of Nimbin:
<http://www.ltl.com.au/Maps/webmaps/largemap/nsw-map2.gif>
Pictures
Photo galleries of
- BBTV symptoms:
<http://www.ctahr.hawaii.edu/banana/leaves_bunchy.asp> (whole plant),
<http://www.ctahr.hawaii.edu/banana/morse_code.asp> (leaf) and
<http://www.ctahr.hawaii.edu/banana/deformed_fruits.asp> (fruit)
- banana aphids:
<http://www.ctahr.hawaii.edu/banana/closeup_photos.asp>
Links
Additional news story:
<http://www.abc.net.au/news/2016-01-19/bunchy-top-bananas/7098710>
Information on BBTV:
<http://www.ctahr.hawaii.edu/banana/downloads/brochure1.pdf> and
<http://www.spc.int/lrd/index.php?option=com_docman&task=doc_download&gid=888&Itemid=296>
BBTV description and genetic groups:
<http://ictvdb.bio-mirror.cn/ICTVdB/00.093.0.02.001.htm> and
<http://www.ncbi.nlm.nih.gov/pubmed/7996145>
BBTV taxonomy via
<http://ictvonline.org/virusTaxonomy.asp?version=2014>
Information on BBTV aphid vector:
<http://www.extento.hawaii.edu/kbase/crop/Type/pentalon.htm> and
<http://cat.inist.fr/?aModele=afficheN&cpsidt=18509990>
 - Mod.DHA
A HealthMap/ProMED-mail map can be accessed at:
<http://healthmap.org/promed/p/284>.]
[See Also:
2013
---
Banana bunchy top virus - Nigeria, Malawi
http://promedmail.org/post/20130130.1520741
2012
---
Banana bunchy top virus - West Africa: 1st report (Benin)
http://promedmail.org/post/20120425.1112745
Bunchy top, banana - Malawi: (RU)
http://promedmail.org/post/20120212.1040179
2009
---
Bunchy top, banana - India: (TN)
http://promedmail.org/post/20091001.3418
Bunchy top, banana - Australia: (NS, QL) alert
http://promedmail.org/post/20090904.3116
Bunchy top, bacterial wilt, banana - Central Africa
http://promedmail.org/post/20090828.3026
Banana streak and bunchy top viruses - Uganda, Cuba
http://promedmail.org/post/20090405.1322
Banana bunchy top virus - Africa: spread
http://promedmail.org/post/20090127.0372
2008
---
Banana bunchy top virus - Angola: 1st rep.
http://promedmail.org/post/20080909.2811
2007
---
Banana bunchy top virus, nematodes - USA (HI)
http://promedmail.org/post/20071224.4124
Banana bunchy top virus - USA (HI)
http://promedmail.org/post/20070823.2757
2006
---
Bunchy top, banana - Australia (NSW): Reintroduction
http://promedmail.org/post/20061209.3474
Banana bunchy top - Philippines: resistance
http://promedmail.org/post/20060809.2234]

• < Previo
• Siguiente >