A5024141253- Legume Nitrogen Fixing Symbiosis
- Plant nutrient uptake and metabolism
- Agronomic Practices and Intercropping Systems
- Mycorrhizal Fungi and Plant Interactions
- Identification and Quantification in Food
- Nematode management and characterization studies
- Coastal wetland ecosystem dynamics
- Heavy Metals in Plants
- Genetic diversity and population structure
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Blood properties and coagulation
- Plant Pathogenic Bacteria Studies
- Erythrocyte Function and Pathophysiology
- Genomics and Phylogenetic Studies
- Cellular transport and secretion
- Plant Ecology and Taxonomy Studies
- Energy Harvesting in Wireless Networks
- Protist diversity and phylogeny
- Supramolecular Self-Assembly in Materials
- Photochromic and Fluorescence Chemistry
- Fecal contamination and water quality
- Polydiacetylene-based materials and applications
- Constructed Wetlands for Wastewater Treatment
- Innovative Energy Harvesting Technologies
Loyola Marymount University
2007-2023
University of California, Los Angeles
1997-2013
Harvey Mudd College
2009
James Madison University
2008
University of Virginia
2008
University of California System
2008
Institute of Molecular and Cell Biology
2002-2007
Institut thématique Génétique, génomique et bioinformatique
2007
Lawrence Berkeley National Laboratory
1998
Agricultural Research Organization
1997
“We are too prone to give all credit him who places the last piece in puzzle and forget that his predecessors had prepared way.” —[Edwin W. Fred, Ira L. Baldwin, Elizabeth McCoy (1932)][1] Ever since identification by [Hellriegel Wilfarth (1888)][2] of rhizobia
Transcripts for two genes expressed early in alfalfa nodule development (MsENOD40 and MsENOD2) are found mycorrhizal roots, but not noncolonized roots or infected with the fungal pathogen Rhizoctonia solani. These same nodulin uninoculated upon application of cytokinin 6-benzylaminopurine. Correlated expression genes, we that contain higher levels trans-zeatin riboside than nonmycorrhizal roots. data suggest there may be conservation signal transduction pathways between...
Summary In legume nitrogen‐fixing symbioses, rhizobial nod genes are obligatory for initiating infection thread formation and root nodule development. Here we show that the common genes, nodD1ABC , whose products synthesize core Nod factor, a chitin‐like oligomer, also required establishment of three‐dimensional architecture biofilm Sinorhizobium meliloti . Common gene mutants form is monolayer. Moreover, adding Factor antibody to S. cells inhibits formation, while chitinase treatment...
The synthesis and colloidal study of a new class low molecular weight organogelators is reported. Racemic propargylic alcohols with perfluoroaryl nonfluorinated aryl rings are capable forming gels in alkane liquids and/or silicone oil. A full characterization prepared from (R/S)-1-pentafluorophenyl-3-phenylprop-2-yn-1-ol [(R/S)-1] was conducted, including both structural [optical microscopy, scanning electron microscopy (SEM), powder X-ray diffraction (XRD), attenuated total reflectance...
ABSTRACT Micromonospora species live in diverse environments and exhibit a broad range of functions, including antibiotic production, biocontrol, degradation complex polysaccharides. To learn more about these versatile actinomycetes, we sequenced the genome strain L5, originally isolated from root nodules an actinorhizal plant growing Mexico.
The nitrogen-fixing symbiosis between Rhizobiaceae and legumes is one of the best-studied interactions established prokaryotes eukaryotes. plant develops root nodules in which bacteria are housed, atmospheric nitrogen fixed into ammonia by rhizobia made available to exchange for carbon compounds. It has been hypothesized that this evolved from more ancient arbuscular mycorrhizal (AM) symbiosis, fungus associates with roots aids absorption mineral nutrients, particularly phosphate. Support...
Botanical supplements for health enhancement are being increasingly used in the United States, but no safeguards formally place to ensure that they not contaminated with non-efficacious or potentially harmful plant material. A molecular approach, which allows authentication of botanical ingredients and detection contaminating material by analyzing ITS-1 region PCR-RFLP subsequent sequencing, is described. When using starting from DNA can be obtained, this method has potential identifying...
Several nonnodulating, nonmycorrhizal (Nod−Myc−) mutants of Melilotus alba Desr. (white sweetclover) have been described. However, the details their responses to Sinorhizobium meliloti not fully elucidated. We investigated rhizobial entry and colonization using Confocal Scanning Laser Microscopy on Masym1–5 isolated an early nodulin (ENOD40) gene from wild-type M. alba. focused Masym3, least responsive S. VA-fungi, determine its response cytokinin. Cytokinin appears be a downstream signal in...
Motility is important in the colonization of plant roots by beneficial and pathogenic bacteria, with flagella playing essential roles host cell adhesion, entrance, biofilm formation. Flagellar biosynthesis energetically expensive.
We have initiated studies on the molecular biology and genetics of white sweetclover (Melilotus alba Desr.) its responses to inoculation with nitrogen-fixing symbiont Sinorhizobium meliloti. Early nodulin genes such as ENOD40 serve markers for transition from root nodule development even before visible stages formation are evident. Using Northern blot analysis, we found that gene was expressed within 6 h after two different strains S. meliloti, one which overproduces symbiotic Nod factors....
Cressa truxillensis, commonly known as alkali weed, is native to western North America and used in revegetation projects saline or alkaline soils at locations such the Ballona Wetlands Ecological Reserve. This research aimed (i) determine methods improve C. truxillensis seed germination, (ii) characterize impact salt has on germination growth, (iii) identify bacterial endophytes their potential plant growth promoting bacteria (PGPB). Results showed that scarification, either through...