Search results for "Geta"

Theoretical evaluation of 15N isotopic methods for measuring symbiotic nitrogen fixation in the fied

2008

International audience; Isotopic methods for the measurement of symbiotic N2 fixation by leguminous plants in the field rely on the use of differences in 15N enrichment between the N sources potentially available for leguminous crops, soil mineral N and atmospheric N2 . This methodology has been fully documented, especially concerning limitations due to non uniform and non constant distribution of 15N and to the use of a reference plant to measure it. Although all authors recognise the necessity of isotopic methods for giving yield independent and time-integrated estimates of symbiotic fixation, they also agree that these methods intrinsically remain imperfect. Our aim in this chapter is (i…

New insights about the role of the chaperon-like protein Cdc48, a target for nitric oxide in plant immunity

2015

Nitric oxide and signalling in plants, Préface.

2016

SPE IPM UB

Advances in Botanical Research

2016

SPE Pôle IPM

Genetic diversity for partner choice in a core collection of pea accessions inoculated by a mix of five Rhizobium leguminosarum bv. viciae genotypes

2013

National audience

Variabilité génétique pour la morphologie du système racinaire du pois. Impact sur la nutrition azotée

2012

Genetic diversity of nodulated root structure and nitrogen nutrition in a core collection of pea

2013

Pea (Pisum sativum) is the third most important grain legume worldwide, and the increasing demand for protein-rich raw material for animal feed or human nutrition has led to a greater interest in this crop as a protein source. Moreover, legumes do not need nitrogen (N) fertilizers, thanks to their natural ability to use, as main N resource, the atmospheric N2 from symbiosis in nodules with Rhizobiaceae spp. However, N nutrition can still be a limiting factor of yield and seed quality in legumes because nodules are very sensitive to their local environment, in particular to nitrate, and root systems of N2 fixing legumes are poorly developed, which makes them unable to explore a large soil vo…

Technical committee of the project SYMGES

2013

EA Pôle MERS. Rapport final de contrat de recherche INRA (communication orale invitée, 46 slides). Présenté le 24 septembre 2013 au BASF SE, Limburgerhof en Allemagne par Cécile Revellin seule. SYMGES – Projet partenarial (2013) – Coordination C. Hénault, UR SOLS Conduit avec l’unité d’Agroécologie de Dijon, en partenariat avec un industriel des biotechnologies agricoles, ce projet étudie la capacité des rhizobia (microorganismes vivant en symbiose avec les légumineuses et possédant la capacité de fixer l’azote) à réduire le N2O en N2 pour utiliser cette fonction microbienne afin de réduire les émissions du gaz à effet de serre par les sols agricoles.

Insights into the unexplored diversity of the nitrous oxide reducing microbial community

2012

Nitrous oxide (N2O) is a major radiative forcing and stratospheric ozone depleting gas emitted from terrestrial and aquatic ecosystems. It can be transformed to N2 by bacteria and archaea harboring the nitrous oxide reductase (N2OR), which is the only known N2O sink in the biosphere. Despite its crucial role in mitigating N2O emissions, knowledge of the N2OR in the environment remains limited. Here, we report a comprehensive phylogenetic analysis of the nosZ gene coding the N2OR in genomes retrieved from public databases. The resulting phylogeny revealed two distinct clades of nosZ, with one unaccounted for in studies investigating N2O reducing communities. Examination of N2OR structural el…

How to decrease the negative impact of water stress on soybean production : application of thuricin-17 and nod factors

2014

International audience; Climate change will most certainly result in increased drought stress events. Besides, water scarcity is already the abiotic stress most limiting to crop production and this is particularly relevant for drought-sensitive legumes. For example, a moderate level of water deficit can reduce soybean production by approximately 40%. In this context, the objective of this study was to develop a method involving the use of beneficial plant x microorganism interaction in order to reduce the impact of water stress on soybean production. In particular we investigated whether the application of two molecules (thuricin-17 or lipochitooligosaccharides (LCO)) produced by a Plant Gr…