10 research outputs found
In vitro organogenesis in Albizia guachapele, Cedrella odorata and Swietenia macrophylla (Fabaceae, Meliaceae)
Regeneration of adventitious buds was achieved from hypocotyl explants of Albizia guachapele (Guayaquil) and Cedrella odorata (Spanish cedar), and from epicotyl explants from Swietenia macrophylla (Honduran Mahogany). Seeds were obtained from CATIE's Latin American Forest Seed Bank and germinated under aseptic conditions. Four explants were cultured in each Petri dish on half strength modified Murashige and Skoog basal medium, and five concentrations of BA (benzyladenine) were studied; A. guachapele and S. macrophylla responded positively to the presence of BA in the culture medium. Otherwise, Cedrella odorata required media supplemented with citokinin and auxin combinations to induce adventitious buds
In vitro organogenesis in Albizia guachapele, Cedrella odorata and Swietenia macrophylla (Fabaceae, Meliaceae)
Regeneration of adventitious buds was achieved from hypocotyl explanls of Albizia guachapele (Guayaquil) and Cedrella odorata (Spanish cedar), and from epicotyl explants from Swietenia macrophylla (Honduran Mahogany). Seeds were obtained from CATIB's Latin American Fores! Seed Bank and genninated under aseptic conditions .. Four explants were cultured in each Petri dish on half strength modified Murashige and Skoog basal medium, and five concentrations of BA (benzyladenine) were studied; A. guachapele and S. macrophylla responded positively lo the presence of BA in the culture medium. Otherwise, Cedrella odorata requĂred media supplemented with citokinin and auxin combinations lo induce adventitious buds.Regeneration of adventitious buds was achieved from hypocotyl explanls of Albizia guachapele (Guayaquil) and Cedrella odorata (Spanish cedar), and from epicotyl explants from Swietenia macrophylla (Honduran Mahogany). Seeds were obtained from CATIE's Latin American Fores! Seed Bank and genninated under aseptic conditions .. Four explants were cultured in each Petri dish on half strength modified Murashige and Skoog basal medium, and five concentrations of BA (benzyladenine) were studied; A. guachapele and S. macrophylla responded positively lo the presence of BA in the culture medium. Otherwise, Cedrella odorata requĂred media supplemented with citokinin and auxin combinations lo induce adventitious buds
Competitive fitness and adaptation of QoI resistant Plasmopara viticola strains
Chapitre 25International audienceQuinone outside inhibiting fungicides (QoIs) represent one of the most important fungicide classes used to control Plasmopara viticola, the causal agent of downy mildew in grapevine. Soon after the introduction of QoI fungicides in vineyard, resistant isolates have been detected. To manage resistance evolution, it is important to understand how resistant populations emerge, spread and survive. One major approach in understanding these processes is to measure the pathogen fitness in the absence of fungicide pressure and to investigate the competitiveness of resistant isolates. In this study, different isolates of P. viticola were included to measure the Composite Index of Fitness. It was also investigated whether there is a fitness cost in QoI-resistant isolates. No fitness cost was detected for the tested isolates under controlled conditions suggesting that only highly fit isolates are selected under field conditions leading to a balance between sensitive and resistant isolates
Barriers to oral care: a cross-sectional analysis of the Canadian longitudinal study on aging (CLSA)
Abstract Background Oral health plays a role in overall health, indicating the need to identify barriers to accessing oral care. The objective of this study was to identify barriers to accessing oral health care and examine the association between socioeconomic, psychosocial, and physical measures with access to oral health care among older Canadians. Methods A cross-sectional study was conducted using data from the Canadian Longitudinal Study on Aging (CLSA) follow-up 1 survey to analyze dental insurance and last oral health care visit. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the association between socioeconomic, psychosocial, and physical measures with access to oral care, measured by dental insurance and last oral health visit. Results Among the 44,011 adults included in the study, 40% reported not having dental insurance while 15% had not visited an oral health professional in the previous 12 months. Several factors were identified as barriers to accessing oral health care including, no dental insurance, low household income, rural residence, and having no natural teeth. People with an annual income of <100,000. Conclusions Identifying barriers to oral health care is important when developing public health strategies to improve access, however, further research is needed to identify the mechanisms as to why these barriers exist
Oral Health Problems among Canadians Aged 45 to 85: Data from the Canadian Longitudinal Study on Aging Baseline Survey (2011â2015)
Oral health is a critical component of overall health. The objective of this study was to describe oral health problems among 47,581 adults aged 45 to 85 in the Canadian Longitudinal Study on Aging (CLSA) among those who have at least one natural tooth (92%) and those without natural teeth across various demographic categories. Among the 47,581 participants in the study, 92% reported having at least one natural tooth (dentate). Among those without teeth, 63% reported an income less than CAD 50,000 versus 39% among those with teeth. Whether they had teeth or not, over 30% of people reported two or more oral health problems. Older adults appear to be retaining their natural teeth (28.9%), but still report experiencing oral health problems. As the population ages, loss of all teeth may not be the most useful proxy for poor oral health, and a population-level understanding of oral health problems may help to better define poor oral health
Médiation Scientifique : une facette de nos métiers de la recherche
Dans ce monde devenu numĂ©rique nous savons que c'est une de nos missions d'acteur de la recherche publique, que de rendre accessibles les sciences du numĂ©rique au plus grand nombre. Ceci afin que chaque citoyenne et citoyen maĂźtrise, au delĂ des usages, les principaux fondements de cette mutation numĂ©rique. Et nous croyons que c'est l'acquisition d'une culture scientifique sur ces sujets qui est le levier de cette appropriation. C'est notre mission et notre plaisir d'y contribuer. Ce document a pour but d'aider chaque collĂšgue Inria intĂ©ressĂ© Ă participer Ă ce volet de nos missions. Devenue une facette de notre mĂ©tier, comme le rappelle le Plan StratĂ©gique Inria [1], ce que nous appelons mĂ©diation scientifique en sciences du numĂ©rique (alias, " mecsci ") se professionnalise et change d'Ă©chelle. Et c'est environ 1 % de nos ressources qui a vocation Ă y ĂȘtre consacrĂ©. Pour tout l'institut on parle donc de prĂšs de 40 Ă©quivalents temps-plein distribuĂ©s Ă travers le travail quotidien ou ponctuel de plusieurs centaines de collĂšgues chercheurs, ingĂ©nieurs, communicants, etc.. Une telle Ă©nergie mĂ©rite d'ĂȘtre bien employĂ©e : au service des meilleurs objectifs ; vers des cibles bien dĂ©finies qui ont de vrais besoins sur ces sujets ; dans le cadre d'actions leviers qui aident Ă faire bouger les choses ; et avec une mĂ©thodologie efficace qui optimise ce que nous investissons dans de telles activitĂ©s ; tout en respectant et en encourageant les dynamiques locales et individuelles indĂ©pendantes qui restent les sources vives de la mĂ©diation scientifique. VoilĂ pourquoi il y a juste besoin d'offrir en partage Ă chacune et chacun les Ă©lĂ©ments fondateurs et mĂ©thodologiques de cette mĂ©diation scientifique. Offrir aussi quelques bonnes pratiques trĂšs concrĂštes. On parle donc ici d'une organisation distribuĂ©e d'actions collaboratives d'oĂč Ă©merge le service public de popularisation scientifique visĂ©. C'est ce que ce document se propose de dĂ©crire ici
Médiation Scientifique : une facette de nos métiers de la recherche
Dans ce monde devenu numĂ©rique nous savons que c'est une de nos missions d'acteur de la recherche publique, que de rendre accessibles les sciences du numĂ©rique au plus grand nombre. Ceci afin que chaque citoyenne et citoyen maĂźtrise, au delĂ des usages, les principaux fondements de cette mutation numĂ©rique. Et nous croyons que c'est l'acquisition d'une culture scientifique sur ces sujets qui est le levier de cette appropriation. C'est notre mission et notre plaisir d'y contribuer. Ce document a pour but d'aider chaque collĂšgue Inria intĂ©ressĂ© Ă participer Ă ce volet de nos missions. Devenue une facette de notre mĂ©tier, comme le rappelle le Plan StratĂ©gique Inria [1], ce que nous appelons mĂ©diation scientifique en sciences du numĂ©rique (alias, " mecsci ") se professionnalise et change d'Ă©chelle. Et c'est environ 1 % de nos ressources qui a vocation Ă y ĂȘtre consacrĂ©. Pour tout l'institut on parle donc de prĂšs de 40 Ă©quivalents temps-plein distribuĂ©s Ă travers le travail quotidien ou ponctuel de plusieurs centaines de collĂšgues chercheurs, ingĂ©nieurs, communicants, etc.. Une telle Ă©nergie mĂ©rite d'ĂȘtre bien employĂ©e : au service des meilleurs objectifs ; vers des cibles bien dĂ©finies qui ont de vrais besoins sur ces sujets ; dans le cadre d'actions leviers qui aident Ă faire bouger les choses ; et avec une mĂ©thodologie efficace qui optimise ce que nous investissons dans de telles activitĂ©s ; tout en respectant et en encourageant les dynamiques locales et individuelles indĂ©pendantes qui restent les sources vives de la mĂ©diation scientifique. VoilĂ pourquoi il y a juste besoin d'offrir en partage Ă chacune et chacun les Ă©lĂ©ments fondateurs et mĂ©thodologiques de cette mĂ©diation scientifique. Offrir aussi quelques bonnes pratiques trĂšs concrĂštes. On parle donc ici d'une organisation distribuĂ©e d'actions collaboratives d'oĂč Ă©merge le service public de popularisation scientifique visĂ©. C'est ce que ce document se propose de dĂ©crire ici