A5060087939- Plant Micronutrient Interactions and Effects
- Legume Nitrogen Fixing Symbiosis
- Plant Stress Responses and Tolerance
- Plant nutrient uptake and metabolism
- Soil Management and Crop Yield
- Nematode management and characterization studies
- Soil Carbon and Nitrogen Dynamics
- Plant-Microbe Interactions and Immunity
- Microbial Community Ecology and Physiology
- Aluminum toxicity and tolerance in plants and animals
- Photosynthetic Processes and Mechanisms
University of Missouri
2020-2023
Plant (United States)
2021
Iron (Fe), an essential element for plant growth, is abundant in soil but with low bioavailability. Thus, plants developed specialized mechanisms to sequester the element. Beneficial microbes have recently become a favored method promote growth through increased uptake of micronutrients, like Fe, yet little known their action. Functional mutants epiphytic bacterium Azospirillum brasilense, prolific grass-root colonizer, were used examine promoting iron Zea mays. Mutants included HM053, FP10,...
An increasing global population of over 4.5 billion people drives demand for calories—30% which are satisfied by grain crops, such as maize. High-density farming practices have been implemented but tend to deplete the soil essential elements resulting in lower nutritional value, notably iron, cultivated crops. Low iron content staple crops can contribute time severe, even fatal, micronutrient deficiencies. Enhancing using post-harvest biofortification strategies be costly. However, field...
Azospirillum brasilense is a prolific grass-root colonizing bacteria well-known for its ability to promote plant growth in several cereal crops. Here we show that one of the mechanisms action boosting performance through increased assimilation micronutrient manganese by host. Using radioactive 52Mn2+ (t½ 5.59 d), examined uptake kinetics this young maize plants, comparing three functional mutants A. brasilense, including HM053, high auxin-producing and N2-fixing strain; ipdC, strain with...
As the use of microbial inoculants in agriculture rises, it becomes important to understand how environment may influence ability promote plant growth. This work examines whether there are light dependencies biological functions Azospirillum brasilense, a commercialized prolific grass-root colonizer. Though classically defined as non-phototrophic, A. brasilense possesses photoreceptors that could perceive conducted through its host's roots. Here, we examined dependency atmospheric nitrogen...
Boron (B) is an essential plant micronutrient. Deficiencies of B have drastic consequences on development leading to crop yield losses and reductions in root shoot growth. Understanding the molecular cellular deficiency challenging, partly because limited availability imaging techniques. In this report we demonstrate efficacy using 4-fluorophenylboronic acid (FPBA) as a agent, which derivative mimic phenylboronic (PBA). We show that radioactively labelled [18F]FPBA (t½=110 m) accumulates at...
Among the PGPB, genus Azospirillum—with an emphasis on A. brasilense—is likely most studied microorganism for mitigation of plant stress. Here, we report investigation functional mutants HM053, ipdC and FP10 brasilense to understand how biological functions these microorganisms can affect host Zn uptake. HM053 is a Nif+ constitutively expressed strain that hyper-fixes N2 produces high levels plant’s relevant hormone auxin. Nif- deficient in N2-fixation. auxin production but fixes N2. uptake...
Abstract In agriculture, plant growth promoting bacteria (PGPB) are increasingly used for reducing environmental stress‐related crop losses through mutualistic actions of these microorganisms, activating physiological and biochemical responses, building tolerances within their hosts. Here we report the use radioactive carbon‐11 ( t ½ 20.4 min) to examine metabolic responses Zea mays Azospirillum brasilense (HM053) inoculation while plants were subjected salinity low nitrogen stresses. Host...
Herbaspirillum seropedicae is a rhizobacteria that occupies specialized ecological niche in agriculture. As an endophyte and prolific grass root colonizer it has the potential to promote plant growth, enhancing crop yield many cereal crops. While mechanisms for growth promotion are controversial, one irrefutable fact these microorganisms rely heavily on plant-borne carbon as their main energy source support of biological functions. Unfortunately, tools technology enabling researchers trace...
Herbaspirillum seropedicae, as an endophyte and prolific root colonizer of numerous cereal crops, occupies important ecological niche in agriculture because its ability to promote plant growth potentially improve crop yield. More importantly, there exists the untapped potential harness ability, a diazotroph, fix atmospheric N2 alternative nitrogen resource synthetic fertilizers. While mechanisms for promotion remain controversial, especially one irrefutable fact is these microorganisms rely...
As the use of microbial inoculants in agriculture rises, it becomes important to understand how environment may influence ability promote plant growth. This work examines whether there are light dependencies biological functions Azospirillum brasilense, a commercialized prolific grass-root colonizer. Though classically defined as non-phototrophic, A. brasilense possesses photoreceptors that could perceive conducted through its host’s roots. Evidence for dependency four processes were...