A Model for the Development of the Rhizobial and Arbuscular Mycorrhizal Symbioses in Legumes and Its Use to Understand the Roles of Ethylene in the Establishment of these two Symbioses [PDF]
We propose a model depicting the development of nodulation and arbuscular mycorrhizae. Both processes are dissected into many steps, using Pisum sativum L. nodulation mutants as a guideline. For nodulation, we distinguish two main developmental programs,
Albrecht C. +192 more
core +2 more sources
RhaU of Rhizobium leguminosarum Is a Rhamnose Mutarotase [PDF]
ABSTRACT Of the nine genes comprising the l -rhamnose operon of Rhizobium leguminosarum , rhaU has not been assigned a function. The construction of a Δ rhaU strain revealed a growth phenotype that was slower than that of the wild-type
Richardson, Jason S. +6 more
openaire +3 more sources
Rhizobial motility preference in root colonization of Medicago truncatula
Summary Tunnel‐like infection thread (IT) structures support root colonization by symbiotic nitrogen‐fixing rhizobia bacteria in most legume species. These tip‐grown structures are key to directing rhizobia from root hairs to developing nodules, where they are hosted to fix nitrogen.
Anaïs Delers +11 more
wiley +1 more source
\u3cem\u3eRhizobium phaseoli\u3c/em\u3e Symbiotic Mutants with Transposon Tn5 Insertions [PDF]
Rhizobium phaseoli CFN42 DNA was mutated by random insertion of Tn5 from suicide plasmid pJB4JI to obtain independently arising strains that were defective in symbiosis with Phaseolus vulgaris but grew normally outside the plant.
Cevallos, Miguel A. +4 more
core +1 more source
ABSTRACT Hydrogels are 3D polymeric networks that can absorb and retain significant amounts of water and exhibit physical properties such as swelling and contraction in response to changes in the external environment. Owing to these unique physicochemical properties, hydrogels have attracted interest as effective solutions to key challenges in modern ...
Yeonseo Kim +9 more
wiley +1 more source
ABSTRACT Soil acidity is among the most important abiotic stresses globally constraining agricultural land and crop productivity. Globally, about 30%–40% of total arable land is under the influence of acidic soil. In Ethiopia, approximately 43% of arable land and productive areas are constrained by acidic soil.
Morketa Gudeta, Adugna Hunduma
wiley +1 more source
Genetic transformation of Rhizobium leguminosarum by plasmid DNA [PDF]
We demonstrated the genetic transformation of Rhizobium leguminosarum by R68.45 plasmid DNA by freezing and thawing cell suspensions in the presence of R68.45 plasmid DNA and 20 mM MgCl2. Clones resistant to kanamycin and tetracycline were recovered at a frequency of 10(-8) per recipient cell.
G S, Bullerjahn, R H, Benzinger
openaire +2 more sources
ABSTRACT Intercropping is an effective method for resource utilization that typically enhances crop yields compared with monoculture. This study was conducted using split plot in a randomized complete block design with three replications over the 2022–2023 years.
Ebrahim Zolfagari Kotbehsara +2 more
wiley +1 more source
Expression of \u3cem\u3eRhizobium leguminosarum\u3c/em\u3e CFN42 Genes for Lipopolysaccharide in Strains Derived from Different \u3cem\u3eR. leguminosarum\u3c/em\u3e Soil Isolates [PDF]
Two mutant derivatives of Rhizobium leguminosarum ANU843 defective in lipopolysaccharide (LPS) were isolated. The LPS of both mutants lacked O antigen and some sugar residues of the LPS core oligosaccharides.
Brink, Benita Anne +3 more
core +1 more source
Mutation in the pssZ Gene Negatively Impacts Exopolysaccharide Synthesis, Surface Properties, and Symbiosis of Rhizobium leguminosarum bv. trifolii with Clover [PDF]
Rhizobium leguminosarum bv. trifolii is a soil bacterium capable of establishing a nitrogen-fixing symbiosis with clover plants (Trifolium spp.). This bacterium secretes large amounts of acidic exopolysaccharide (EPS), which plays an essential role in ...
Janczarek, Monika +4 more
core +1 more source

