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https://www.readbyqxmd.com/read/28092750/assessing-common-birds-ecological-requirements-to-address-nature-conservation-in-permanent-crops-lessons-from-italian-vineyards
#1
Giacomo Assandri, Giuseppe Bogliani, Paolo Pedrini, Mattia Brambilla
Viticulture has contributed to shaping cultural landscapes in several regions across all continents. Recent farming intensification is causing landscape homogenization and biodiversity loss in several of those areas, but knowledge about the impacts on biodiversity in vineyards is still scarce. Simplified agro-ecosystems resulting from intensification host mainly generalist and common species, which still play a key role in the regulation of ecosystems and in the provision of ecosystem services. We assessed the abundance of 11 common bird species at 47 linear transects in a vineyard-dominated landscape in Trentino (NE Italy), in both spring and winter, and analysed abundance variation in relation to three independent groups of predictors: landscape, management, and topographic-climatic variables...
January 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28060498/1-8-cineole-in-french-red-wines-evidence-for-a-contribution-related-to-its-various-origins
#2
Xavier Poitou, Cécile Thibon, Philippe Darriet
The aromatic descriptor "green", reflecting grape unripeness in French red wines, is frequently associated with the levels of 3-alkyl-2-methoxypyrazines, particularly 3-isobutyl-2-methoxypyrazine (IBMP), which has bell pepper nuances. Nevertheless, not all green aromatic expressions in red wines correlate with 3-alkyl-2-methoxypyrazine concentrations. This study considered sensory and chemical approaches using Cabernet Sauvignon wines obtained from grapes harvested at one-month intervals during the 2014 and 2015 vintages to investigate other volatile odoriferous compounds...
January 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28040157/monitoring-the-mycobiota-during-greco-di-tufo-and-aglianico-wine-fermentation-by-18s-rrna-gene-sequencing
#3
Francesca De Filippis, Antonietta La Storia, Giuseppe Blaiotta
Spontaneous alcoholic fermentation of grape must is a complex process, carried out by indigenous yeast populations arising from the vineyard or the winery environment and therefore representing an autochthonous microbial terroir of the production area. Microbial diversity at species and biotype level is extremely important in order to develop the composite and typical flavour profile of DOCG (Appellation of Controlled and Guaranteed Origin) wines. In this study, we monitored fungal populations involved in spontaneous fermentations of Aglianico and Greco di Tufo grape must by high-throughput sequencing (HTS) of 18S rRNA gene amplicons...
May 2017: Food Microbiology
https://www.readbyqxmd.com/read/28030929/risk-exposure-to-vibration-and-noise-in-the-use-of-agricultural-track-laying-tractors
#4
Mariangela Vallone, Filippa Bono, Elisabeth Quendler, Pierluigi Febo, Pietro Catania
Human exposure to mechanical vibration may represent a significant risk factor for exposed workers in the agricultural sector. Also, noise in agriculture is one of the risk factors to be taken into account in the evaluation of workers' health and safety. One of the major sources of discomfort for the workers operating a tractors is the noise to which they are exposed during work. The aim of this study was to evaluate the risk of exposure to whole-body vibration for the operator driving track-laying tractors in vineyard orchard and the noise level...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28027472/assessment-of-major-and-trace-element-bioavailability-in-vineyard-soil-applying-different-single-extraction-procedures-and-pseudo-total-digestion
#5
Tijana Milićević, Dubravka Relić, Sandra Škrivanj, Živoslav Tešić, Aleksandar Popović
A different single extraction procedures (CH3COOH, Na2EDTA, CaCl2, NH4NO3, deionized water), and pseudo-total digestion (aqua regia) were applied to determine major (Al, Fe, K, Mn, Na, P, S, and Si) and trace (Cd, Co, Cr, Cu, Mo, Ni, Pb, V, and Zn) element bioavailability in a topsoil from the experimental vineyard ("Radmilovac", Belgrade, Serbia). For the first time, the extraction with deionized water during 16 h was tested as an alternative method for isolating bioavailable major and trace elements from the soil...
December 19, 2016: Chemosphere
https://www.readbyqxmd.com/read/28025219/tillage-reduces-survival-of-grape-berry-moth-lepidoptera-tortricidae-via-burial-rather-than-mechanical-injury
#6
Jason M Matlock, Rufus Isaacs, Matthew Grieshop
The grape berry moth, Paralobesia viteana (Clemens), is a key pest of vineyards in eastern North America that overwinters as pupae in leaf litter on the vineyard floor. This presents an opportunity for tillage to disturb and bury the pupae, providing a potential nonchemical approach to control of this pest. Using a Lilleston-style rotary cultivator, we determined the distribution of pupae within the soil profile after single tillage passes, measured the type and severity of damage inflicted on pupae, and investigated how these effects on pupae influenced their survival...
December 26, 2016: Environmental Entomology
https://www.readbyqxmd.com/read/28012998/viral-small-rnas-reveal-the-genomic-variations-of-three-grapevine-vein-clearing-virus-quasispecies-populations
#7
Susanne Howard, Wenping Qiu
Viral small RNAs (vsRNAs) include viral small interfering RNAs (vsiRNAs) that are initiators and products of RNA silencing, and small RNAs that are derived from viral RNAs with function still unknown. Sequencing of vsRNAs allows assembling of viral genomes and revelation of viral population variations at genomic levels. Grapevine vein clearing virus (GVCV) is a new member of the family Caulimoviridae whose DNA genome is replicated by reverse transcription of pre-genomic RNA molecules. In this short report, three genomic sequences of GVCV were assembled from vsRNAs that were isolated and sequenced from three individual grapevines in commercial vineyards and compared to the GVCV-CHA reference genome...
February 2, 2017: Virus Research
https://www.readbyqxmd.com/read/28004294/identification-synthesis-and-field-tests-of-the-sex-pheromone-of-margarodes-prieskaensis-jakubski
#8
Barend V Burger, C André de Klerk, Michael Morr, Wilhelmina J G Burger
Here, we report the identification and synthesis of the sex pheromone of female Margarodes prieskaensis (Jakubski), and the attractiveness of the synthetic pheromone to males in field trapping tests. Volatile organic compounds were collected from virgin females using a sample enrichment probe (SEP). Analyses by gas chromatography coupled to mass spectrometry revealed the presence of only two constituents. By scaling up the SEP, sufficient of the major constituent was collected for (1)H and (13)C nuclear magnetic resonance (NMR) analyses and ancillary NMR techniques...
December 21, 2016: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/27989999/candidate-nematicidal-proteins-in-a-new-pseudomonas-veronii-isolate-identified-by-its-antagonistic-properties-against-xiphinema-index
#9
Hayron Canchignia, Fabiola Altimira, Christian Montes, Evelyn Sánchez, Eduardo Tapia, María Miccono, Daniel Espinoza, Carlos Aguirre, Michael Seeger, Humberto Prieto
The nematode Xiphinema index affects grape vines and transmits important viruses associated with fanleaf degeneration. Pseudomonas spp. are an extensive bacterial group in which important biodegradation and/or biocontrol properties can occur for several strains in the group. The aim of this study was to identify new Pseudomonas isolates with antagonist activity against X. index. Forty bacterial isolates were obtained from soil and root samples from Chilean vineyards. Thirteen new fluorescent pseudomonads were found and assessed for their antagonistic capability...
December 17, 2016: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/27983669/towards-automated-large-scale-3d-phenotyping-of-vineyards-under-field-conditions
#10
Johann Christian Rose, Anna Kicherer, Markus Wieland, Lasse Klingbeil, Reinhard Töpfer, Heiner Kuhlmann
In viticulture, phenotypic data are traditionally collected directly in the field via visual and manual means by an experienced person. This approach is time consuming, subjective and prone to human errors. In recent years, research therefore has focused strongly on developing automated and non-invasive sensor-based methods to increase data acquisition speed, enhance measurement accuracy and objectivity and to reduce labor costs. While many 2D methods based on image processing have been proposed for field phenotyping, only a few 3D solutions are found in the literature...
December 15, 2016: Sensors
https://www.readbyqxmd.com/read/27973426/impact-of-cluster-zone-leaf-removal-on-grapes-cv-regent-polyphenol-content-by-the-uplc-pda-ms-method
#11
Kamila Mijowska, Ireneusz Ochmian, Jan Oszmiański
Leaf removal is known to enhance light exposure of clusters and therefore may affect grape composition. Owing to the risk of decreasing grape quality or sunburn as a consequence of improper sun exposure, it is crucial to determine the optimum leaf removal techniques adequate for the particular climate conditions of a vineyard area. Defoliation experiments on vine cv. Regent were conducted in two consecutive years (2014 and 2015). The effect of leaf removal treatment on the qualitative and quantitative composition of the polyphenol compounds in the grapes, with reference to the basic weather conditions of the vineyard area, located in Szczecin in the North-Western part of Poland, was assessed...
December 11, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27973409/robust-grape-cluster-detection-in-a-vineyard-by-combining-the-adaboost-framework-and-multiple-color-components
#12
Lufeng Luo, Yunchao Tang, Xiangjun Zou, Chenglin Wang, Po Zhang, Wenxian Feng
The automatic fruit detection and precision picking in unstructured environments was always a difficult and frontline problem in the harvesting robots field. To realize the accurate identification of grape clusters in a vineyard, an approach for the automatic detection of ripe grape by combining the AdaBoost framework and multiple color components was developed by using a simple vision sensor. This approach mainly included three steps: (1) the dataset of classifier training samples was obtained by capturing the images from grape planting scenes using a color digital camera, extracting the effective color components for grape clusters, and then constructing the corresponding linear classification models using the threshold method; (2) based on these linear models and the dataset, a strong classifier was constructed by using the AdaBoost framework; and (3) all the pixels of the captured images were classified by the strong classifier, the noise was eliminated by the region threshold method and morphological filtering, and the grape clusters were finally marked using the enclosing rectangle method...
December 10, 2016: Sensors
https://www.readbyqxmd.com/read/27965681/contrasting-susceptibilities-to-flavescence-dor%C3%A3-e-in-vitis-vinifera-rootstocks-and-wild-vitis-species
#13
Sandrine Eveillard, Camille Jollard, Fabien Labroussaa, Dima Khalil, Mireille Perrin, Delphine Desqué, Pascal Salar, Frédérique Razan, Cyril Hévin, Louis Bordenave, Xavier Foissac, Jean E Masson, Sylvie Malembic-Maher
Flavescence dorée (FD) is a quarantine disease of grapevine, involving interactions between the plants, leafhopper vectors, and FD phytoplasma. Characterizing the susceptibility of vine varieties could limit disease propagation. After extensive surveys in vineyards, we showed that Cabernet Sauvignon (CS) is highly susceptible, with a high proportion of symptomatic branches and phytoplasma titers, in contrast to Merlot (M). Localized insect transmissions and grafting showed that phytoplasma circulate in the whole plant in the CS cultivar, but in M they are restricted to the transmission point...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27959951/comprehensive-virus-detection-using-next-generation-sequencing-in-grapevine-vascular-tissues-of-plants-obtained-from-the-wine-regions-of-bohemia-and-moravia-czech-republic
#14
Aleš Eichmeier, Marcela Komínková, Petr Komínek, Miroslav Baránek
Comprehensive next generation sequencing virus detection was used to detect the whole spectrum of viruses and viroids in selected grapevines from the Czech Republic. The novel NGS approach was based on sequencing libraries of small RNA isolated from grapevine vascular tissues. Eight previously partially-characterized grapevines of diverse varieties were selected and subjected to analysis: Chardonnay, Laurot, Guzal Kara, and rootstock Kober 125AA from the Moravia wine-producing region; plus Müller-Thurgau and Pinot Noir from the Bohemia wine-producing region, both in the Czech Republic...
2016: PloS One
https://www.readbyqxmd.com/read/27938242/a-synoptic-analysis-of-the-temporal-and-spatial-grapevine-leafroll-disease-in-an-historic-napa-vineyard-and-experimental-vine-blocks
#15
Kari L Arnold, Deborah Golino, Neil McRoberts
Five Grapevine leafroll-associated virus 3 (GLRaV-3) epidemics were analyzed utilizing a standardized approach to robustly characterize the temporal and spatial parameters. Published data included in the analysis are from Spain, New Zealand, and Napa Valley, California together with new data from an historic vineyard in Napa Valley, CA. Linear regression analyses of logit-transformed incidence data indicated a maximum average increase of 11% per year in disease incidence, with considerable variation among locations...
December 12, 2016: Phytopathology
https://www.readbyqxmd.com/read/27933578/inhibitory-activity-of-beauveria-bassiana-and-trichoderma-spp-on-the-insect-pests-xylotrechus-arvicola-coleoptera-cerambycidae-and-acanthoscelides-obtectus-coleoptera-chrisomelidae-bruchinae
#16
Álvaro Rodríguez-González, Sara Mayo, Óscar González-López, Bonifacio Reinoso, Santiago Gutierrez, Pedro Antonio Casquero
Xylotrechus arvicola is an important pest in vineyards (Vitis vinifera) in the main Iberian wine-producing regions, and Acanthoscelides obtectus causes severe post-harvest losses in the common bean (Phaseolus vulgaris). Under laboratory conditions with a spray tower, the susceptibility of the immature stages of X. arvicola and A. obtectus against the entomopathogenic fungi Beauveria bassiana and four strains of Trichoderma spp. was evaluated. Both insect pests T. harzianum and B. bassiana showed a good inhibitory activity, accumulating an inhibition on the eggs of values above 85 and 82%, respectively...
January 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27924549/identification-of-ochratoxin-a-producing-black-aspergilli-from-grapes-using-loop-mediated-isothermal-amplification-lamp-assays
#17
Michelangelo Storari, Giovanni A L Broggini
The loop-mediated isothermal amplification (LAMP) allows the rapid and specific amplification of target DNA under isothermal conditions without a prior DNA purification step. Moreover, successful amplifications can be directly evaluated through a color change of the reaction solutions. Here, we describe two LAMP assays for the detection of ochratoxin-A producing black aspergilli isolated from grapes. The two assays can detect DNA of OTA-producing black aspergilli following a very simple sample preparation and have the potential to significantly speed up the routine monitoring of these toxigenic molds in vineyards...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27923589/comparative-detection-of-a-large-population-of-grapevine-viruses-by-taqman-%C3%A2-rt-qpcr-and-elisa
#18
Sébastien Bruisson, Sylvain Lebel, Bernard Walter, Laurent Prevotat, Sam Seddas, Paul Schellenbaum
Grapevine (Vitis spp.) can be infected by numerous viruses that are often widespread and of great economic importance. Reliable detection methods are necessary for sanitary selection which is the only way to partly control grapevine virus diseases. Biological indexing and ELISA are currently the standard methods for screening propagation material, and PCR-methods are becoming increasingly popular. Due to the diversity of virus isolates, it is essential to verify that the tests allow the detection of the largest possible virus populations...
February 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/27902788/fertilization-of-grapevine-based-on-gene-expression
#19
Cheng Zhang, Haifeng Jia, Jingjue Zeng, Tariq Perraiz, Zhenqiang Xie, Xudong Zhu, Chen Wang
The application of genetic information in agricultural production is an important issue, which is highly worthy of attention. Gene expression data can accurately reflect the growth and metabolic status of plants, with which we can predict and monitor the nutritional requirements of plants and then derive accurate fertilization strategies. In this study, to verify the feasibility and workability of gene information-based fertilization strategies and to figure out the specific nutritional requirements of grapevine ( L...
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27898049/mecs-vine-%C3%A2-a-new-proximal-sensor-for-segmented-mapping-of-vigor-and-yield-parameters-on-vineyard-rows
#20
Matteo Gatti, Paolo Dosso, Marco Maurino, Maria Clara Merli, Fabio Bernizzoni, Facundo José Pirez, Bonfiglio Platè, Gian Carlo Bertuzzi, Stefano Poni
Ground-based proximal sensing of vineyard features is gaining interest due to its ability to serve in even quite small plots with the advantage of being conducted concurrently with normal vineyard practices (i.e., spraying, pruning or soil tilling) with no dependence upon weather conditions, external services or law-imposed limitations. The purpose of the present work was to test performance of the new terrestrial multi-sensor MECS-VINE(®) in terms of reliability and degree of correlation with several canopy growth and yield parameters in the grapevine...
November 27, 2016: Sensors
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