Navigation Links
NEIKER and INRA discover that BDA symptoms in grapevine leaves are a sign of esca
Date:9/19/2012

This press release is available in Spanish.

Scientists at the Basque Institute of Agricultural Research and Development, NEIKER-Tecnalia, and the National Institute of Agricultural Research in Bordeaux (INRA) have come to the conclusion that alleged symptoms of 'black dead arm' (BDA) on grapevine leaves are, in fact, those of esca disease in its initial phase. Esca and BDA are diseases that affect the trunk of vines and cause serious losses to the wine-making and grape-growing sectors every year.

The symptoms produced by esca and BDA in vine leaves are reminiscent of those of drought. In the case of esca, the tissue between the veins dries up and appears surrounded by a red pigmentation and then another yellow discoloration before reaching the green, fresh tissue (tiger stripe pattern). The leaves which to date were believed to be affected by ''black dead arm" (BDA) only showed the red pigmentation beside the green tissue. This difference led some researchers to believe that two different diseases were involved.

With the goal of studying these signs more deeply, NEIKER-Tecnalia and INRA researchers undertook a fortnightly monitoring of affected vines over a period of three years, at a number of vineyards in the Rioja Alavesa (Spain), Bordeaux (France), the Rhine area (Germany) and the Bekaa Valley (Lebanon). The experts observed that the leaves progressed from the so-called BDA symptoms to those of esca, and even that both symptoms could be detected at the same time in many of the plants studied.

If two different, independent diseases were involved, most of the vines would show external signs of either BDA or esca; but not of both succesively.

Thus, the specialists concluded, both the leaves showing red markings and yellow ones beside the green tissue, as well as the ones showing red markings only, were affected by esca. Mo
'/>"/>

Contact: Aitziber Lasa Iglesias
a.lasa@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

Page: 1 2

Related biology news :

1. Neiker-Tecnalia identifies antitumour proteins in the latex of the plant Euphorbia trigona
2. Discovery of reprogramming signature may help further stem cell-based regenerative medicine research
3. Chinese scientists discover MVK mutations associated with DSAP
4. King Richard III search in new phase after discovery has potential to rewrite history
5. Scientists discover how the brain ages
6. Newly discovered letters and translated German ode expand Texas link to infamous Bone Wars
7. National herpetology society honors UT Arlington professor for discoveries
8. New discovery related to gum disease
9. New potential targets discovered for treating squamous cell lung cancers
10. Study in mice discovers injection of heat-generating cells reduces belly fat
11. New Danish fungal species discovered
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... July 24, 2014 -- Keryx Biopharmaceuticals, Inc. (Nasdaq:KERX) (the ... randomized, active control Phase 3 study of Zerenex (ferric ... for the treatment of hyperphosphatemia in patients with end-stage ... binding and iRon delivery with FErric CiTrate in EsrD) ... the American Society of Nephrology ( JASN ). ...
(Date:7/24/2014)... (July 24, 2014) Scientists at The New ... one step closer to creating a viable cell ... own cells. , For the first time, ... lines from skin samples of patients with primary ... accelerated protocol to induce these stem cells into ...
(Date:7/24/2014)... over a 35 year period in which the human ... humans on declining animal numbers. This decline matters because ... crustaceans, slugs and worms bring to our day-to-day lives, ... nutrient cycling, water filtration and human health. , The ... UCL, Stanford and UCSB, focused on the demise of ...
Breaking Biology News(10 mins):Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 2Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 3Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 4NYSCF scientists 1 step closer to cell therapy for multiple sclerosis patients 2Invertebrate numbers nearly halve as human population doubles 2Invertebrate numbers nearly halve as human population doubles 3
... of seven tropical forests around the world has revealed ... less common trees. The landmark study, conducted by 33 ... 27 issue of the journal Science, conclusively demonstrates that ... , Helene Muller-Landau, an assistant professor of ecology in ...
... Mellon University have discovered that our ears use the ... from babbling brooks to wailing babies. These results represent ... is encoded for transmission to the brain, according to ... "News and Views" editorial in the Feb. 23 issue ...
... of Pittsburgh Professor of Anthropology Jeffrey H. Schwartz and ... Jan. 30 in the New Anatomist journal, shows that ... to Schwartz's theory of evolution, originally explained in his ... of Species (John Wiley & Sons, 2000). , In ...
Cached Biology News:Underdogs in the understory: Study suggests nature favors rarer trees 2Carnegie Mellon scientists show brain uses optimal code for sound 2Carnegie Mellon scientists show brain uses optimal code for sound 3Pitt professor's theory of evolution gets boost from cell research 2Pitt professor's theory of evolution gets boost from cell research 3
(Date:7/24/2014)... to settle into equilibriuma state of unchanging balance ... of non-equilibrium conditions where new possibilities lie. Non-equilibrium ... such as temperature fluctuations, freezing and melting, or ... body temperature, airplanes to fly, and the Earth ... even though these conditions exist naturally and are ...
(Date:7/24/2014)... 2014  CorMedix Inc. (NYSE MKT: CRMD), a ... products for the prevention and treatment of cardiorenal ... on July 18, 2014 from the NYSE MKT ... CorMedix plan to regain compliance with continued listing ... NYSE-MKT is continuing the Company,s listing and has ...
(Date:7/24/2014)... 1000 balances – 4 steps – One Recommendation: ... and expertly narrows down the mass of product choices ... terminals. , First, select the working environment, then ... instead) and define the accuracy – it’s really that ... the list to models that fit best with the ...
(Date:7/24/2014)... (PRWEB) July 24, 2014 As part ... numerous projects in the MENA region during 2014 with ... a preferred provider agreement with DZS to manage our ... region,” said Global VP of R&D and President of ... developed excellent operational practices with a focus on utilizing ...
Breaking Biology Technology:New approach to form non-equilibrium structures 2CorMedix, Inc. Granted Extension of NYSE-MKT Listing 2CorMedix, Inc. Granted Extension of NYSE-MKT Listing 3SBI Pharmaceuticals Co. Ltd. Enters into Preferred Provider Agreement with DZS Clinical Services 2
... Medarex, Inc.,(Nasdaq: MEDX ) announced today that it ... Conference at 10:30 a.m. ET on Tuesday, January,8, 2008. ... available in the,Investor Relations section of the Medarex Web ... presentation will be available following the event., About ...
... PARK, N.C., Jan. 3 Chimerix, Inc., a,biotechnology ... Neil Frazer, M.B., Ch.B., FRCA, FFPM has joined ... joining Chimerix, Dr. Frazer served as the Chief ... (previously,Biocure Medical) where he was responsible for the ...
... (Nasdaq: ONXX ) today announced that it ... January 7, at 11:30 a.m.,Pacific Time. Interested parties ... http://www.metameetings.com/webcasts/jpmorgan/healthcare08 , It is recommended ... order to,register and download any necessary software. For ...
Cached Biology Technology:Chimerix Appoints Neil Frazer, M.B., Ch.B., FRCA, FFPM as Chief Medical Officer 2
ID clarifier: platform...
The PROTEAN II xi multi-cell 2-D conversion kit converts the PROTEAN II xi multi-cell to the PROTEAN II XL multi-cell for a wider format cell that accepts 17 to 18 cm IPG strips....
The SVT3-2 diverter valve is a 3-port, 2-position valve for use with the BioLogic DuoFlow system....
... is used for vertical electrophoresis applications. The cell accommodates ... L of running buffer. It includes the PROTEAN II ... kit, which contains accessories for use with 2.0 mm ... 2 sets of 20 x 20 cm glass plates, ...
Biology Products: