The European Innovation Partnership Agri has set up a consultation process involving 20 experts from 11 EU countries to discuss the potential of a substantial increase in protein crop production in the EU. The dependency of Europe on soya bean meal imports and the associated drivers are described and underline the need for change. The EIP Agri process resulted in the assessment of the present-day yield gap of protein crops using an approach based on the market values of the protein, starch and plant oil components. Oil-based protein crops seemed to be overall better positioned than starch based protein crops because the price of oil levels is higher than that of starch. Alfalfa was identified as being interesting for regions where drying cost are low. The process also resulted in the identification of opportunities and constraints to be encountered by the innovation process, combining the knowledge and physical infrastructure, market structure, co-operation and interaction and the influence of culturally determined values and beliefs. Therefore, the recommendation is to develop a comprehensive approach to meet the challenge of substantially increasing the EU’s protein crop production.
{"title":"The EU's dependency on soya bean import for the animal feed industry and potential for EU produced alternatives","authors":"D. Visser, R. Schreuder, F. Stoddard","doi":"10.1051/OCL/2014021","DOIUrl":"https://doi.org/10.1051/OCL/2014021","url":null,"abstract":"The European Innovation Partnership Agri has set up a consultation process involving 20 experts from 11 EU countries to discuss the potential of a substantial increase in protein crop production in the EU. The dependency of Europe on soya bean meal imports and the associated drivers are described and underline the need for change. The EIP Agri process resulted in the assessment of the present-day yield gap of protein crops using an approach based on the market values of the protein, starch and plant oil components. Oil-based protein crops seemed to be overall better positioned than starch based protein crops because the price of oil levels is higher than that of starch. Alfalfa was identified as being interesting for regions where drying cost are low. The process also resulted in the identification of opportunities and constraints to be encountered by the innovation process, combining the knowledge and physical infrastructure, market structure, co-operation and interaction and the influence of culturally determined values and beliefs. Therefore, the recommendation is to develop a comprehensive approach to meet the challenge of substantially increasing the EU’s protein crop production.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"134 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86338228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The potential of first generation biofuels to mitigate climate change is still largely debated in the scientific and policy-making arenas. It is currently assessed through life cycle assessment (LCA), a method for accounting for the greenhouse gas (GHG) emissions of a given product from “cradle-to-grave”, which is widely used to aid decision making on environmental issues. Although LCA is standardized, its application to biofuels leads to inconclusive results often fraught by a high variability and uncertainty. This is due to differences in quantifying the environmental impacts of feedstock production, and the difficulties encountered when considering land use changes (LUC) effects. The occurrence of LUC mechanisms is in part the consequence of policies supporting the use of biofuels in the transport sector, which implicitly increases the competition between various possible uses of land worldwide. Here, we review the methodologies recently put forward to include LUC effects in LCAs, and examples from the US, Europe and France. These cross analysis show that LCA needs to be adapted and combined to other tools such as economic modeling in order to provide a more reliable assessment of the biofuels chains.
{"title":"The importance of land use change in the environmental balance of biofuels","authors":"W. B. Aoun, B. Gabrielle, B. Gagnepain","doi":"10.1051/OCL/2013027","DOIUrl":"https://doi.org/10.1051/OCL/2013027","url":null,"abstract":"The potential of first generation biofuels to mitigate climate change is still largely debated in the scientific and policy-making arenas. It is currently assessed through life cycle assessment (LCA), a method for accounting for the greenhouse gas (GHG) emissions of a given product from “cradle-to-grave”, which is widely used to aid decision making on environmental issues. Although LCA is standardized, its application to biofuels leads to inconclusive results often fraught by a high variability and uncertainty. This is due to differences in quantifying the environmental impacts of feedstock production, and the difficulties encountered when considering land use changes (LUC) effects. The occurrence of LUC mechanisms is in part the consequence of policies supporting the use of biofuels in the transport sector, which implicitly increases the competition between various possible uses of land worldwide. Here, we review the methodologies recently put forward to include LUC effects in LCAs, and examples from the US, Europe and France. These cross analysis show that LCA needs to be adapted and combined to other tools such as economic modeling in order to provide a more reliable assessment of the biofuels chains.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"54 1","pages":"25-54"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77451507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Meynard, A. Charlier, Françoise Charrier, Mehand Fares, Marianne Le Bail, Marie-Benoît Magrini, A. Messéan
La specialisation, a l’œuvre dans les exploitations francaises depuis plusieurs decennies, a remodele le paysage agricole de l’Hexagone : la cerealiculture est aujourd’hui largement dominante dans le centre du Bassin Parisien, en Alsace ou en Aquitaine, tandis que l’Ouest de la France, qui se consacre a l’elevage intensif, donne une large place dans ses assolements, au mais ensilage et aux prairies monospecifiques de courte duree. Cette specialisation regionale s’accompagne d’une reduction du nombre d’especes cultivees, et d’un raccourcissement des rotations, qui engendre des difficultes a maitriser les populations d’adventices ou les parasites et de nombreux problemes ecologiques (perte de biodiversite; faible recyclage des elements mineraux N, P, K...).
{"title":"La spécialisation à l’œuvre","authors":"J. Meynard, A. Charlier, Françoise Charrier, Mehand Fares, Marianne Le Bail, Marie-Benoît Magrini, A. Messéan","doi":"10.1051/OCL/2013006","DOIUrl":"https://doi.org/10.1051/OCL/2013006","url":null,"abstract":"La specialisation, a l’œuvre dans les exploitations francaises depuis plusieurs decennies, a remodele le paysage agricole de l’Hexagone : la cerealiculture est aujourd’hui largement dominante dans le centre du Bassin Parisien, en Alsace ou en Aquitaine, tandis que l’Ouest de la France, qui se consacre a l’elevage intensif, donne une large place dans ses assolements, au mais ensilage et aux prairies monospecifiques de courte duree. Cette specialisation regionale s’accompagne d’une reduction du nombre d’especes cultivees, et d’un raccourcissement des rotations, qui engendre des difficultes a maitriser les populations d’adventices ou les parasites et de nombreux problemes ecologiques (perte de biodiversite; faible recyclage des elements mineraux N, P, K...).","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"227 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77471314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Meynard, A. Messéan, A. Charlier, Françoise Charrier, Mehand Fares, Marianne Le Bail, Marie-Benoît Magrini, Isabelle Savini
La diversification des cultures est souvent presentee comme un levier d’action pour accroitre la durabilite des systemes de production agricoles. Bien raisonnee, elle favorise en effet une reduction de l’usage d’intrants exterieurs a l’exploitation – pesticides, engrais, eau – et des nuisances environnementales associees a leur utilisation excessive. A l’inverse, la simplification des systemes de culture engagee depuis plus de 40 ans s’est accompagnee d’un recours croissant aux intrants. Cependant, malgre son interet pour les systemes de production en termes de durabilite ecologique mais aussi economique (repartition des risques), et son inscription dans divers plans et dispositifs incitatifs, la diversification des cultures progresse peu. Les ministeres en charge de l’agriculture et de l’environnement ont donc commande a l’INRA une etude visant a identifier les freins a la diversification des cultures en France et les leviers mobilisables, par les pouvoirs publics notamment, pour la favoriser. L’hypothese de travail est que ces freins relevent du fonctionnement global du systeme agro-industriel, et de la capacite de developpement de filieres valorisant les cultures de diversification. L’etude a examine un certain nombre de cas representatifs de la diversite des filieres et notamment de leurs modes d’organisation, qui determinent la coordination et l’engagement des acteurs economiques impliques dans le developpement d’une culture de diversification.
{"title":"Freins et leviers à la diversification des cultures : étude au niveau des exploitations agricoles et des filières","authors":"J. Meynard, A. Messéan, A. Charlier, Françoise Charrier, Mehand Fares, Marianne Le Bail, Marie-Benoît Magrini, Isabelle Savini","doi":"10.1051/OCL/2013007","DOIUrl":"https://doi.org/10.1051/OCL/2013007","url":null,"abstract":"La diversification des cultures est souvent presentee comme un levier d’action pour accroitre la durabilite des systemes de production agricoles. Bien raisonnee, elle favorise en effet une reduction de l’usage d’intrants exterieurs a l’exploitation – pesticides, engrais, eau – et des nuisances environnementales associees a leur utilisation excessive. A l’inverse, la simplification des systemes de culture engagee depuis plus de 40 ans s’est accompagnee d’un recours croissant aux intrants. Cependant, malgre son interet pour les systemes de production en termes de durabilite ecologique mais aussi economique (repartition des risques), et son inscription dans divers plans et dispositifs incitatifs, la diversification des cultures progresse peu. Les ministeres en charge de l’agriculture et de l’environnement ont donc commande a l’INRA une etude visant a identifier les freins a la diversification des cultures en France et les leviers mobilisables, par les pouvoirs publics notamment, pour la favoriser. L’hypothese de travail est que ces freins relevent du fonctionnement global du systeme agro-industriel, et de la capacite de developpement de filieres valorisant les cultures de diversification. L’etude a examine un certain nombre de cas representatifs de la diversite des filieres et notamment de leurs modes d’organisation, qui determinent la coordination et l’engagement des acteurs economiques impliques dans le developpement d’une culture de diversification.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88599116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The retina is one of the vertebrate tissues with the highest content in polyunsaturated fatty acids (PUFA). A large proportion of retinal glycerophospholipids, especially those found in photoreceptor membranes, are dipolyunsaturated molecular species. Among them, dipolyunsaturated phosphatidylcholine (PC) molecular species are known to contain very-long-chain polyunsaturated fatty acids (VLC-PUFA) from the n-3 and n-6 series having 24-36 carbon atoms and four to six double bonds. Recent interest in the role played by VLC-PUFA arose from the findings that a protein called Elongation of very-long-chain fatty acids 4 (ELOVL4) is involved in their biosynthesis and that mutations in the ELOVL4 gene are associated with Stargardt-like macular dystrophy (STGD3), a dominantly inherited juvenile macular degeneration leading to vision loss. In this context, PC molecular species containing VLC-PUFA in retina must be precisely characterized to improve our understanding of the pathogenesis of STGD3. For 25 years, several current approaches using gas chromatography or gas chromatography-mass spectrometry have been used for the characterisation and quantification of VLC-PUFA. These methods allowed characterizing with precision the structures (carbon chain length and double bond positions) of the different VLC-PUFA in bovine retina. Thus, retinal C28-C36 fatty acids are polyunsaturated and belong to the n-3 and n-6 families. The n-6 family of C28-C36 fatty acids has four or five double bonds, while the n-3 family of VLC-PUFA contains five or six double bonds. Moreover, some studies allowed determining the position of VLC-PUFA in the VLC-PC species. But most of these conventional approaches are time-consuming, requiring successive extraction, chromatographic steps and often a derivatization step before. Recently, a normal LC-ESI-MS/MS method was proposed for the structural characterization and the quantification of VLC-PC species in retinas from bovines and human donors. It directly analyses phospholipids as intact molecules and preserves the information based on the relative position of acyl radicals on the glycerol backbone. Since the results from molecular and biochemical studies led to the conclusion that VLC-PUFA are involved in the pathogenesis of STGD3, this specific and accurate method may be useful to more precisely investigate the molecular mechanisms leading to photoreceptor dysfunction and death in STD3.
{"title":"Very-long-chain polyunsaturated fatty acids in the retina: analysis and clinical relevance in physiological and pathological conditions","authors":"O. Berdeaux, N. Acar","doi":"10.1684/OCL.2011.0406","DOIUrl":"https://doi.org/10.1684/OCL.2011.0406","url":null,"abstract":"The retina is one of the vertebrate tissues with the highest content in polyunsaturated fatty acids (PUFA). A large proportion of retinal glycerophospholipids, especially those found in photoreceptor membranes, are dipolyunsaturated molecular species. Among them, dipolyunsaturated phosphatidylcholine (PC) molecular species are known to contain very-long-chain polyunsaturated fatty acids (VLC-PUFA) from the n-3 and n-6 series having 24-36 carbon atoms and four to six double bonds. Recent interest in the role played by VLC-PUFA arose from the findings that a protein called Elongation of very-long-chain fatty acids 4 (ELOVL4) is involved in their biosynthesis and that mutations in the ELOVL4 gene are associated with Stargardt-like macular dystrophy (STGD3), a dominantly inherited juvenile macular degeneration leading to vision loss. In this context, PC molecular species containing VLC-PUFA in retina must be precisely characterized to improve our understanding of the pathogenesis of STGD3. For 25 years, several current approaches using gas chromatography or gas chromatography-mass spectrometry have been used for the characterisation and quantification of VLC-PUFA. These methods allowed characterizing with precision the structures (carbon chain length and double bond positions) of the different VLC-PUFA in bovine retina. Thus, retinal C28-C36 fatty acids are polyunsaturated and belong to the n-3 and n-6 families. The n-6 family of C28-C36 fatty acids has four or five double bonds, while the n-3 family of VLC-PUFA contains five or six double bonds. Moreover, some studies allowed determining the position of VLC-PUFA in the VLC-PC species. But most of these conventional approaches are time-consuming, requiring successive extraction, chromatographic steps and often a derivatization step before. Recently, a normal LC-ESI-MS/MS method was proposed for the structural characterization and the quantification of VLC-PC species in retinas from bovines and human donors. It directly analyses phospholipids as intact molecules and preserves the information based on the relative position of acyl radicals on the glycerol backbone. Since the results from molecular and biochemical studies led to the conclusion that VLC-PUFA are involved in the pathogenesis of STGD3, this specific and accurate method may be useful to more precisely investigate the molecular mechanisms leading to photoreceptor dysfunction and death in STD3.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"65 12 1","pages":"284-290"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84277121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Although biotechnologies and sustainable development are often considered as antagonists, there is increasing evidence for a role for this approach in the ecological intensification of oil palm culti- vation. Ecological intensification is based on the understanding of how nature functions so as to exploit its resources without destroying it. Living organisms are supported by the genome (DNA) through the action of the transcriptome (RNAs), proteome, metabolome, and ionome, the four basic pillars of func- tional genomics. These pillars represent the sum of all the expressed genes, proteins, metabolites, and elements within an organism. The dynamic response and interaction of these biochemical ''omes'' de- fines how a living system functions, and its study, systems biology, is now one of the biggest challenges in life sciences. In oil palm, as in many major crops, functional genomics is still at its beginning, al- though there are no reasons why oil palm should not rapidly benefit from the fast progresses generated by automated and high-throughput technologies. The success of sequencing projects on model plants has created a widespread interest in exploring the structure and expression patterns of the genome. Indeed, several institutions have now achieved the full sequencing of the oil palm genome, paving the way for the rapid evolution of various genomics-based approaches. Oil palm breeding has provided an average 1% of genetic gain per year since the early 1960s and such an impressive increase in oil yield will be maintained in future generations with a major contribution from biotechnology. Indeed, the re- cent adoption of biotechnological approaches has already proven very useful in major areas such as cloning of outstanding material, identity checking of progenies/mother palms, identification and characterization of genes underlying agricultural traits, etc. Phenotypic differences among individuals are partly the result of quantitative differences in transcript abundance. Using microarray technology, it is now possible to assess the abundance of many transcripts—and, indeed, of the entire known tran- scriptome—simultaneously. Studies which attempt to localize the genetic regulators of gene expression have been carried out in several species, including maize and eucalyptus. Microarrays have been used to determine gene expression levels in segregating populations and identify genomic regions (gene expression QTLs, or eQTLs) explaining transcript variation in co-regulated genes. Our article will focus on recent developments in various plant biotechnology areas in which applications for improving sustainability already exist or will be developed in the near future.
{"title":"Oil palm biotechnologies are definitely out of infancy","authors":"A. Rival, Estelle Jaligot","doi":"10.1051/OCL.2010.0341","DOIUrl":"https://doi.org/10.1051/OCL.2010.0341","url":null,"abstract":"Although biotechnologies and sustainable development are often considered as antagonists, there is increasing evidence for a role for this approach in the ecological intensification of oil palm culti- vation. Ecological intensification is based on the understanding of how nature functions so as to exploit its resources without destroying it. Living organisms are supported by the genome (DNA) through the action of the transcriptome (RNAs), proteome, metabolome, and ionome, the four basic pillars of func- tional genomics. These pillars represent the sum of all the expressed genes, proteins, metabolites, and elements within an organism. The dynamic response and interaction of these biochemical ''omes'' de- fines how a living system functions, and its study, systems biology, is now one of the biggest challenges in life sciences. In oil palm, as in many major crops, functional genomics is still at its beginning, al- though there are no reasons why oil palm should not rapidly benefit from the fast progresses generated by automated and high-throughput technologies. The success of sequencing projects on model plants has created a widespread interest in exploring the structure and expression patterns of the genome. Indeed, several institutions have now achieved the full sequencing of the oil palm genome, paving the way for the rapid evolution of various genomics-based approaches. Oil palm breeding has provided an average 1% of genetic gain per year since the early 1960s and such an impressive increase in oil yield will be maintained in future generations with a major contribution from biotechnology. Indeed, the re- cent adoption of biotechnological approaches has already proven very useful in major areas such as cloning of outstanding material, identity checking of progenies/mother palms, identification and characterization of genes underlying agricultural traits, etc. Phenotypic differences among individuals are partly the result of quantitative differences in transcript abundance. Using microarray technology, it is now possible to assess the abundance of many transcripts—and, indeed, of the entire known tran- scriptome—simultaneously. Studies which attempt to localize the genetic regulators of gene expression have been carried out in several species, including maize and eucalyptus. Microarrays have been used to determine gene expression levels in segregating populations and identify genomic regions (gene expression QTLs, or eQTLs) explaining transcript variation in co-regulated genes. Our article will focus on recent developments in various plant biotechnology areas in which applications for improving sustainability already exist or will be developed in the near future.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"1 1","pages":"368-374"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89848962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Palmier à huile et développement durable : introduction","authors":"A. Weil","doi":"10.1684/OCL.2010.0347","DOIUrl":"https://doi.org/10.1684/OCL.2010.0347","url":null,"abstract":"","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81572370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Baudouin, R. Philippe, R. Quaicoe, S. Dery, M. Dollet
The Lethal Yellowing (LY) disease is one of the main threats to coconut industry in many parts of Africa and the Caribbean. Planting resistant varieties has long been recognized as one of the most promising ways of controlling the disease. Considerable efforts have been devoted throughout the world to screening suitable varieties and have often involved international cooperation. It has proven to be a lengthy and difficult task. We present an overview of these efforts with special mention to Ghana, Jamaica and Mexico. Although no variety so far has been proven fully and permanently resistant, treating resistance level as a threshold trait makes it possible to demonstrate significant differences among varieties, which can be exploited effectively to make genetic improvement a component of an integrated control strategy. Based on past experience, we make a few suggestions to increase the diversity of resistance sources and increase the level and the sustainability of resistance to LY in coconut.
{"title":"General overview of genetic research and experimentation on coconut varieties tolerant/resistant to Lethal Yellowing","authors":"L. Baudouin, R. Philippe, R. Quaicoe, S. Dery, M. Dollet","doi":"10.1051/OCL.2009.0244","DOIUrl":"https://doi.org/10.1051/OCL.2009.0244","url":null,"abstract":"The Lethal Yellowing (LY) disease is one of the main threats to coconut industry in many parts of Africa and the Caribbean. Planting resistant varieties has long been recognized as one of the most promising ways of controlling the disease. Considerable efforts have been devoted throughout the world to screening suitable varieties and have often involved international cooperation. It has proven to be a lengthy and difficult task. We present an overview of these efforts with special mention to Ghana, Jamaica and Mexico. Although no variety so far has been proven fully and permanently resistant, treating resistance level as a threshold trait makes it possible to demonstrate significant differences among varieties, which can be exploited effectively to make genetic improvement a component of an integrated control strategy. Based on past experience, we make a few suggestions to increase the diversity of resistance sources and increase the level and the sustainability of resistance to LY in coconut.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"6 1","pages":"127-131"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80551903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Nkansah-Poku, R. Philippe, R. Quaicoe, S. Dery, A. Ransford
The Cape Saint Paul Wilt Disease (CSPWD), a lethal-yellowing type disease of coconut has been in Ghana since 1932. Aerial and/or ground surveys were undertaken to assess the current status of the disease spread. The survey showed that the spread of the disease for the past 5 years has mainly been the expansion of existing foci. However, new outbreaks were identified at Glidzi in the Volta, Bawjiase and Efutu Breman in Central regions. After the resurgence in the Volta region in 1995, the Woe-Tegbi-Dzelukope corridor has remained endemic, but less aggressive. Pockets of healthy groves remain along all the coastline and inland of known disease zones. Eradication of diseased palms at Ampain focus lying just about 60 km to the Ivorian border, and disease situations on new replanting with MYD × VTT hybrid are discussed.
{"title":"Cape Saint Paul Wilt Disease of coconut in Ghana: surveillance and management of disease spread","authors":"J. Nkansah-Poku, R. Philippe, R. Quaicoe, S. Dery, A. Ransford","doi":"10.1051/OCL.2009.0247","DOIUrl":"https://doi.org/10.1051/OCL.2009.0247","url":null,"abstract":"The Cape Saint Paul Wilt Disease (CSPWD), a lethal-yellowing type disease of coconut has been in Ghana since 1932. Aerial and/or ground surveys were undertaken to assess the current status of the disease spread. The survey showed that the spread of the disease for the past 5 years has mainly been the expansion of existing foci. However, new outbreaks were identified at Glidzi in the Volta, Bawjiase and Efutu Breman in Central regions. After the resurgence in the Volta region in 1995, the Woe-Tegbi-Dzelukope corridor has remained endemic, but less aggressive. Pockets of healthy groves remain along all the coastline and inland of known disease zones. Eradication of diseased palms at Ampain focus lying just about 60 km to the Ivorian border, and disease situations on new replanting with MYD × VTT hybrid are discussed.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"6 1","pages":"111-115"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74034870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Pilet, R. Philippe, Simon Reignard, S. Descamps, R. Quaicoe, Joe Nkansa-Poku, S. Fabre, M. Dollet
The vector of the phytoplasma responsible for the coconut lethal yellowing disease in West Africa is unknown to date. However, it is known that phytoplasmas are transmitted by leafhoppers and planthoppers, which are supposed to be the only ones able to inject the phytoplasma in the phloem. Whereas the presence of phytoplasma in the insect does not prove its capacity to transmit the disease. We have tested a large number of insects for the presence of phytoplamas by PCR (direct PCR and Nested PCR) using both primer pairs specific for all phytoplasmas and those specific for the coconut lethal yellowing disease phytoplasma. In effect the evidence of one or several species carrying the phytoplasma would direct us on the insects to focus on in our transmission cages trials.
{"title":"Identification of potential insect vectors of the Cape Saint Paul Wilt Disease of coconut in Ghana by PCR","authors":"F. Pilet, R. Philippe, Simon Reignard, S. Descamps, R. Quaicoe, Joe Nkansa-Poku, S. Fabre, M. Dollet","doi":"10.1051/OCL.2009.0253","DOIUrl":"https://doi.org/10.1051/OCL.2009.0253","url":null,"abstract":"The vector of the phytoplasma responsible for the coconut lethal yellowing disease in West Africa is unknown to date. However, it is known that phytoplasmas are transmitted by leafhoppers and planthoppers, which are supposed to be the only ones able to inject the phytoplasma in the phloem. Whereas the presence of phytoplasma in the insect does not prove its capacity to transmit the disease. We have tested a large number of insects for the presence of phytoplamas by PCR (direct PCR and Nested PCR) using both primer pairs specific for all phytoplasmas and those specific for the coconut lethal yellowing disease phytoplasma. In effect the evidence of one or several species carrying the phytoplasma would direct us on the insects to focus on in our transmission cages trials.","PeriodicalId":30815,"journal":{"name":"Oleagineux Corps gras Lipides","volume":"31 1","pages":"107-110"},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83527039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：