Navigation Links
Ripening secrets of the vine revealed
Date:11/20/2007

Whether you prefer a Cabernet Sauvignon or a Pinot Noir grape variety, two new research articles published in the online open access journal, BMC Genomics, offer a host of new genetic information on fruit ripening for this economically important fruit crop.

The grapevine's gene expression analysis reveals two distinct molecular and functional phases that correspond with the green and red grape stages. And researchers have reported the first biochemical evidence that reactive oxygen species accumulate during the colour transition. Stefania Pilati and fellow researchers from the IASMA Research Center, San Michele all'Adige, Italy, investigated ripening Pinot Noir grapes (Vitis vinifera L.) to identify fruit ripening genes and investigate seasonal influences. They found a core set of more than 1,400 ripening-specific genes that fluctuated similarly across three growing seasons and a smaller gene group strongly influenced by climatic conditions.

During the green berry (pre-vraison) phase, numerous genes involved in hormonal signalling and transcriptional regulation were modulated, suggesting large-scale cellular metabolism reprogramming. Auxin, ethylene and light played pivotal roles. During the following ripening (post-vraison) phase, genes for cell-wall organization and biogenesis, carbohydrate and secondary metabolisms, and stress response came into play, whereas photosynthesis was strongly repressed. These transcriptional events tally with the processes of berry softening and accumulation of sugar, colour and aroma compounds, which ultimately determine berry and wine quality. At vraison, the intervening point when grapes slow down their growth and change colour, this study highlighted an oxidative burst involving hydrogen peroxide (H2O2), and an extensive modulation of the enzymatic anti-oxidative network.

Meanwhile, Laurent G. Deluc and colleagues from the University of Nevada, Reno and the Boston University School of Medicine, USA,
'/>"/>

Contact: Charlotte Webber
press@biomedcentral.com
44-020-763-19980
BioMed Central
Source:Eurekalert

Page: 1 2

Related biology news :

1. MIT unraveling secrets of red tide
2. Scientists eye secrets of retinal regeneration
3. NMR researchers unlock hydrogens secrets to spot polymorphism in pharmaceuticals
4. Scientists gather in New Zealand to share oceans secrets
5. New study uncovers secrets behind butterfly wing patterns
6. Eat chocolate, drink wine, add fun to life: SLU geriatrician shares secrets of staying young
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... . Taking ... activity in children,Today the Canadian Society of Exercise Physiology ... activity and published their position and recommendations in the ... APNM ). This position stand provides an important ... physical activity for children and suggests both practical guidelines ...
(Date:8/19/2014)... 9- and 10-year-olds finds that those who are more ... in the brain than their peers who are less ... carry nerve signals from one brain region to another. ... more efficient nerve activity. , The team reports ... Neuroscience. , "Previous studies suggest that children with ...
(Date:8/18/2014)... Fish species native to a major Arizona watershed ... by 2050 as surface water flow is reduced by ... Most of these fish species, found in the Verde ... relies on easy access to various resources throughout the ... speckled dace (Rhinichthys osculus), roundtail chub (Gila robusta) and ...
Breaking Biology News(10 mins):Taking a stand: Balancing the BENEFITS and RISKS of physical activity in children 2Taking a stand: Balancing the BENEFITS and RISKS of physical activity in children 3Physically fit kids have beefier brain white matter than their less-fit peers 2Physically fit kids have beefier brain white matter than their less-fit peers 3Climate change will threaten fish by drying out Southwest US streams, study predicts 2Climate change will threaten fish by drying out Southwest US streams, study predicts 3
... at the Institute of Food Research have detected subtle changes ... of tumours. With support from the Food Standards ... are investigating whether diet could control these changes and delay ... changes in 18 genes that play a role in the ...
... heavy metal contaminant levels in dolphins from Port Phillip ... levels may be a contributing factor to dolphin deaths. ... have confirmed levels of mercury found in the dolphins ... and mental effects and were higher than mercury levels ...
... breath-freshening strips, a Temple University researcher has developed ... Greg Smutzer, director of the Laboratory of ... College of Science and Technology ( http://www.temple.edu/biology ), ... but these edible strips contain one of the ...
Cached Biology News:'Addicted' cells provide early cancer diagnosis 2Mercury contamination found in stranded Victorian dolphins 2Taking a cue from breath fresheners, researcher develops new method for taste testing 2Taking a cue from breath fresheners, researcher develops new method for taste testing 3
(Date:8/19/2014)... , Aug. 19, 2014 /PRNewswire/ - iCo Therapeutics ... ICOTF), today reported results of its Oral Amphotericin ... HIV reservoirs.  The study, conducted by ImmuneCarta®, the ... in vitro effectiveness of Oral Amp B ... present in individuals despite intensive treatment with antiretroviral ...
(Date:8/18/2014)... /PRNewswire/ - SQI Diagnostics Inc. (TSX-V: SQD), a life sciences ... for advanced microarray diagnostics, today announced it will hold ... 2:00 pm ET.  During the call, ... review of SQI,s recent commercialization progress and then introduce ... recently appointed to the Board of Directors of SQI ...
(Date:8/18/2014)... HIV Infection Drug Market and Pipeline Insight is a ... infection and the number of deaths due to AIDS has ... the globe. It has been estimated that the death rate ... with the rates for children being even much lower. A ... has been the improved access to antiretroviral drugs and therapy ...
(Date:8/18/2014)... 2014 Dyadic International, Inc. ("Dyadic") (OTCQX: ... proprietary technologies are used to develop, manufacture and ... bio-based chemical, biopharmaceutical and industrial enzyme industries, announced ... on Form 10 with the U.S. Securities and ... http://photos.prnewswire.com/prnh/20110621/CL06708LOGO The Form ...
Breaking Biology Technology:iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 2iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 3SQI Diagnostics Announces Investor Conference Call with Dr. Allan Pronovost 2SQI Diagnostics Announces Investor Conference Call with Dr. Allan Pronovost 3Global HIV Infection Drug Market Overview 2Global HIV Infection Drug Market Overview 3Global HIV Infection Drug Market Overview 4Dyadic International Files Form 10 Registration Statement 2Dyadic International Files Form 10 Registration Statement 3Dyadic International Files Form 10 Registration Statement 4
... trails national averages in venture capital availability, but the ... detailed in a new report, NorthStar Guide to ... Inc. The report is subtitled, A sourcebook to growth ... Technology Network received an advance copy of the 60-page ...
... An Inquiry Into the Nature and Causes of The Wealth ... was the 18th century equivalent of todays (sanitized) bumper sticker: ... annual revenue of the society as great as he can, ... promote the public interest, nor knows how much he is ...
... joined Green Bays Nsight Telservices (www.nsighttel.com) in 2001 as ... action-packed stint as Chief Technical Officer (CTO) of Chicago ... Local Nsight, NET Cable, and NetNet and heads up ... Services (LMDS) deployment. , , WTN: How did ...
Cached Biology Technology:Growing Venture Capital in Wisconsin 2Growing Venture Capital in Wisconsin 3Wisconsin Economic Summits have given a hand to states progress 2Wisconsin Economic Summits have given a hand to states progress 3Interview: WTN Gets Real with Appletons Brad Hansen - Dot-Com Experience helps Executive to Spot Trends 2Interview: WTN Gets Real with Appletons Brad Hansen - Dot-Com Experience helps Executive to Spot Trends 3
HybriWell seals securely to a microscope slide surface in seconds to enclose single or multiple specimens in a small reagent volume and eliminate evaporation....
Comp Dim: chamber diam. depth 20 2.8 mm chamber maximum volume 720 μL...
... the Easy-Titer Human IgM Assay Kit to ... and easy-to-perform assay for Human IgM that ... kit incorporates a simple mix-and-read assay that ... from 15-500 ng/ml in approximately 30 minutes. ...
AC input: 230 V...
Biology Products: