182 research outputs found
Tectonique récente dans le nord de la France et le sud de la Belgique: exemple de la Plaine de la Lys (feuille d'Hazebrouck à 1/50.000)
Analysis of Human Errors in Industrial Incidents and Accidents for Improvement of Work Safety
Overexpression of RoDELLA impacts the height, branching, and flowering behaviour of Pelargonium × domesticum transgenic plants
Key message We reported the cloning of a rose DELLA gene. We obtained transgenic Pelargonium lines overexpressing this gene which presented several phenotypes in plant growth, root growth, flowering time and number of inflorescences. Abstract Control of development is an important issue for production of ornamental plant. The plant growth regulator, gibberellins (GAs), plays a pivotal role in regulating plant growth and development. DELLA proteins are nuclear negative regulator of GA signalling. Our objective was to study the role of GA in the plant architecture and in the blooming of ornamentals. We cloned a rose DELLA homologous gene, RoDELLA, and studied its function by genetic transformation of pelargonium. Several transgenic pelargonium (Pelargonium × domesticum ‘Autum Haze’) lines were produced that ectopically expressed RoDELLA under the control of the 35S promoter. These transgenic plants exhibited a range of phenotypes which could be related to the reduction in GA response. Most of transgenic plants showed reduced growth associated to an increase of the node and branch number. Moreover, overexpression of RoDELLA blocked or delayed flowering in transgenic pelargonium and exhibited defects in the root formation. We demonstrated that pelargonium could be used to validate ornamental gene as the rose DELLA gene. RoDELLA overexpression modified many aspects of plant developmental pathways, as the plant growth, the transition of vegetative to floral stage and the ability of rooting
Evaluation of the driver’s mental workload: a necessity in a perspective of in-vehicle system design for road safety improvement
Mise en place d'une expérience avec le grand public: entre recherche, vulgarisation et pédagogie
Methodological considerations on implementing a participative experimentWe present the implementation of an economic experiment conducted simultaneously in 11 French cities, with over 2700 participants, during four uninterrupted hours, during a popular-science event held in September 2015. Our goal is both to provide a roadmap for a possible replication and to discuss how the discipline can be used in new fields (science popularization, popular education, public communication)
Aspectos de complexidade do trabalho de coletores de lixo domiciliar: a gestão da variabilidade do trabalho na rua
A triagem de materiais recicláveis e as variabilidades inerentes ao processo: estudo de caso em uma cooperativa
O trabalho e a saúde de cuidadores de adolescentes com deficiência: uma aproximação a partir do ponto de vista da atividade
Condições de trabalho e transtornos mentais comuns em trabalhadores da rede básica de saúde de Botucatu (SP)
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