A5023810217- Legume Nitrogen Fixing Symbiosis
- Plant nutrient uptake and metabolism
- Plant Disease Resistance and Genetics
- Agronomic Practices and Intercropping Systems
- Nematode management and characterization studies
- Plant Parasitism and Resistance
- Plant Molecular Biology Research
- Plant-Microbe Interactions and Immunity
- Plant Reproductive Biology
- Mycorrhizal Fungi and Plant Interactions
- Plant responses to water stress
- Ammonia Synthesis and Nitrogen Reduction
- Plant Pathogens and Fungal Diseases
- Coastal wetland ecosystem dynamics
- Plant Micronutrient Interactions and Effects
- Plant Physiology and Cultivation Studies
- Plant Pathogens and Resistance
- Plant Stress Responses and Tolerance
- Wastewater Treatment and Nitrogen Removal
- Lichen and fungal ecology
- Aluminum toxicity and tolerance in plants and animals
- Insect symbiosis and bacterial influences
- Plant and Fungal Interactions Research
- Biocrusts and Microbial Ecology
- Actinomycetales infections and treatment
Stockholm University
2016-2025
Universidad de Colima
2020
Bielefeld University
2020
University of Göttingen
2002-2012
Instytut Biologii Doświadczalnej im. Marcelego Nenckiego
2009-2011
Leibniz Institute of Plant Biochemistry
2009
Wageningen University & Research
1994-2007
Hebrew University of Jerusalem
2004
Pohang University of Science and Technology
2004
Institute of Molecular Biology
2004
that are expressed before the onset of nitrogen fixation and involved in infection nodule development. The products late nodulin genes interaction with endosymbiont metabolic specialization (Nap Bisseling, 1990). In first part this review, we describe early steps between rhizobia legumes result formation a nitrogen-fixing nodule. We focus on role specific lipooligosaccharides secreted by induction these steps. second part, functioning compare actinorhizal legume nodules.
Genomic traces of symbiosis loss A between certain bacteria and their plant hosts delivers fixed nitrogen to the plants. Griesmann et al. sequenced several genomes analyze why nitrogen-fixing is irregularly scattered through evolutionary tree (see Perspective by Nagy). Various carried lost pathways that could have supported symbiosis. It seems this symbiosis, which relies on multiple complex interorganismal signaling, susceptible selection prone being over time. Science , issue p. eaat1743 ;...
Piriformospora indica has been shown to improve the growth of many plant species including Arabidopsis thaliana , but mechanism by which this is achieved still unclear. root colonization P. was examined in sterile culture on medium Murashige and Skoog. formed intracellular structures epidermal cells caused changes growth, leading stunted highly branched systems. This effect because a diffusible factor could be mimicked IAA. In addition, produce IAA liquid culture. We suggest that auxin...
In endophytic symbioses, microorganisms live intercellularly or intracellularly inside a plant, in mutually beneficial rela? tionship. The host plant (the macrosymbiont) usually supplies the endophyte microsymbiont) with photosynthates, whereas benefit of these associations for is an improvement access to important mineral nutrients whose supply would otherwise be growth limiting. With exception cyanobacterial most symbioses involving higher plants, colonize root (reviewed Quispel, 1992)....
The gene ENOD40 is expressed during early stages of legume nodule development. A homolog was isolated from tobacco, which, as does legumes, encodes an oligopeptide about 10 amino acids. In tobacco protoplasts, these peptides change the response to auxin at concentrations low − 12 16 M. encoded by appear act plant growth regulators. Sequence alignment full ENDO40 sequences soybean, pea, alfalfa, and tocacco plants.
Frankia strains are nitrogen-fixing soil actinobacteria that can form root symbioses with actinorhizal plants. Phylogenetically, symbiotic frankiae be divided into three clusters, and this division also corresponds to host specificity groups. The of cluster II which Rosales Cucurbitales, thus displaying a broad range, show suprisingly low genetic diversity date not cultured. genome the first representative cluster, Candidatus datiscae Dg1 (Dg1), microsymbiont Datisca glomerata, was recently...
To identify genes specifically expressed during early stages of actinorhizal nodule development, a cDNA library made from poly(A) RNA root nodules Alnus glutinosa was screened differentially with and cDNA, respectively. Seven nodule-enhanced four nodule-specific clones were isolated. By using in situ hybridization, two the cDNAs shown to be at highest levels infected cells before onset nitrogen fixation; one them, ag12 (A. glutinosa), examined detail. Sequencing showed that codes for serine...
ABSTRACT Members of the noncultured clade Frankia enter into root nodule symbioses with actinorhizal species from orders Cucurbitales and Rosales. We report genome sequence a member this originally Pakistan but obtained nodules American plant Datisca glomerata without isolation in culture.
In some plant families, including Cucurbitaceae, initiation and development of lateral roots (LRs) occur in the parental root apical meristem. The objective this study was to identify general mechanisms underlying LR (LRI). Therefore, first cellular events leading LRI as well role auxin process were studied Cucurbita pepo meristem.Transgenic hairy harbouring auxin-responsive promoter DR5 fused different reporter genes used for visualizing response maxima (ARMs) via confocal laser scanning...
Lycopodiophyta—consisting of three orders, Lycopodiales, Isoetales and Selaginellales, with different types shoot apical meristems (SAMs)—form the earliest branch among extant vascular plants. They represent a sister group to all other plants, from which they differ in that their leaves are microphylls—that is, single, unbranched vein, emerging protostele without leaf gap—not megaphylls. All determinate organs originating on flanks indeterminate SAMs. Thus, formation requires suppression...
Cyanobacteria belonging to the genus Nostoc comprise free-living strains and also facultative plant symbionts. Symbiotic can enter into symbiosis with taxonomically diverse range of host plants. Little is known about genomic changes associated evolutionary transition from symbiont. Here, we compared genomes derived 11 symbiotic isolated different plants infer phylogenetic relationships between strains. Phylogenetic reconstructions 89 Nostocales showed that a broad range, entering epiphytic...
The ability to establish root nodule symbioses is restricted four different plant orders. Soil actinobacteria of the genus Frankia can a symbiotic relationship with diverse group plants within eight families from three orders, Cucurbitales, Fagales and Rosales. Phylogenetically, strains be divided into clusters, which (I, II, III) contain strains. Members Cluster II nodulate broadest range host species two growing on six continents. Two genomes were sequenced thus far, both Asia. In this...
• The colonization of Lotus japonicus roots by the arbuscular mycorrhizal fungus Glomus intraradices was analysed in plant mutants affected symbiosis genes, SYM15 or SYMRK. SYMRK encodes an LRR receptor-like kinase that is, like gene, essential for both and rhizobial symbioses. Different patterns were observed growing vs meristematically arrested roots. Three steps interaction differentially impaired mutants: surface opening, where anticlinal cell walls two adjacent epidermal cells separate...
Abstract Alder (Alnus glutinosa) and more than 200 angiosperms that encompass 24 genera are collectively called actinorhizal plants. These plants form a symbiotic relationship with the nitrogen-fixing actinomycete Frankia strain HFPArI3. The provide bacteria carbon sources in exchange for fixed nitrogen, but this metabolite nodules has not been well defined. We isolated an alder cDNA from nodule library by differential screening versus root found it encoded transporter of PTR (peptide...
Plant root-nodule symbiosis (RNS) with mutualistic nitrogen-fixing bacteria is restricted to a single clade of angiosperms, the Nitrogen-Fixing Nodulation Clade (NFNC), and best understood in legume family. Nodulating species share many commonalities, explained either by divergence from common ancestor over 100 million years ago or convergence following independent origins that same time period. Regardless, comparative analyses diverse nodulation syndromes can provide insights into...