Federico N Spagnoletti

Research Institute of Agricultural and Environmental Biosciences (INBA) · National Research Council of Argentina (CONICET)

Cover crops (CCs) were found to improve soil health by increasing plant diversity and ground cover. They may also improve water supply for cash crops by reducing evaporation and increasing soil water storage capacity. However, their influence on plant-associated microbial communities, including symbiotic arbuscular mycorrhizal fungi (AMF), is less...

Nano-enabled Agrochemicals in Agriculture presents a targeted overview of the safe implementation of nanotechnologies within horticultural and agricultural settings with the purpose of achieving enhanced production while maintaining ecological integrity. The growing global request for agricultural crops/products requires high standards of quality a...

The aim of this chapter is to offer a wide scope of description of the biosynthetic or eco-friendly routes for obtaining nanoparticles as well as exploring the possibilities of their application in the agroindustrial sector. Nanotechnological approaches are gaining tremendous impetus in this field, especially in helping to cope with biotic stresses...

The development of environmentally friendly new procedures for the synthesis of metallic nanoparticles is one of the main goals of nanotechnology. Proteins and enzymes from plants, filamentous fungi, yeast, and bacteria to produce nanoparticles are both valuable and viable alternatives to conventional synthesis of nanomaterials due to their high ef...

Root colonization with arbuscular mycorrhizal fungi (AMF) improves plant tolerance against soil-borne pathogens. The purpose of the present study was to explore the efficacy of the AMF Rhizophagus intraradices (N.C. Schenck & G.S. Sm.) as a biocontrol agent against Fusarium pseudograminearum (O’Donnell and Aoki) in wheat plants grown under greenhou...

As a consequence of global change, distribution of species and interaction between organisms are altered. Organisms share their environment with hundreds of species, some of them displaying pathogenic, neutral, or benefic behavior. Due to the adapting ability of organisms to live in diverse natural scenarios, they present a wide array of responses...

Dark septate endophytes (DSE) are a heterogeneous group of fungi, mostly belonging to the Phylum Ascomycota, that are involved in a mutualistic symbiosis with plant roots. The aim of this study is to evaluate the behavior of two strains of DSE isolated from wheat roots of two cropping areas in the province of Buenos Aires, Argentina, against some a...

The capacity of arbuscular mycorrhizal fungi (AMF) to alleviate the negative effects incited by root pathogens in a range of plant hosts has been established. On the other hand, accumulated evidence also shows that fertilization practices can negatively impact AMF. Nevertheless, the interaction between AMF, pathogens and fertilizers, especially nit...

Arsenic (As) is a non-essential element, and its uptake and accumulation in plant tissues can affect metabolism, causing physiological disorders, even death. However, some microorganisms have the ability to overcome those unfavorable effects and to improve plant performance under As stress environments. Among them, arbuscular mycorrhizal fungi (AMF...

Synthesis of noble metal nanoparticles using natural products and living organisms has drawn a lot of interest owing to economic prospects and potential applicability in different fields. For this work we used the exudate of the soil fungus Macrophomina phaseolina for a low-cost method of green synthesis to obtain stable silver-silver chloride nano...

The effects of phosphorus (P) application on the relationship between the arbuscular mycorrhizal fungus (AMF) Rhizophagus intraradices and the pathogen Macrophomina phaseolina (charcoal rot) affecting soybean (Glycine max L.) are unknown. We evaluated the effects of P on both the severity of the pathogen and the AMF protection against the charcoal...

The presence of a single surface plasmon resonance peak at 415 nm in the scanned UV-vis region suggests the nanoparticles have spherical shape, which was further confirmed by electron microscopy. A drop of Ag/AgCl-NPs sample solution synthesized by Macrophomina phaseolina cell-free filtrate was deposited onto a silicon wafer to analyze the morpholo...

All crops are negatively affected by several abiotic and biotic stresses, alone or jointly; however, some microorganisms, such as arbuscular mycorrhizal fungi (AMF), are able to alleviate them. Here, we investigated the effects of the AMF Rhizophagus intraradices (N.C. Schenck & G.S. Smith) C. Walker & A. Schüßler on soybean plants (Glycine max L.)...

Green synthesis of metallic nanoparticles using biological sources has attracted much attention due to its economic aspects and potential applicability in a wide range of fields. The present study demonstrates an eco-friendly and low-cost method of biosynthesis of stable silver chloride nanoparticles (AgCl-NPs) using cell-free filtrate of phytopath...

Many microorganisms play a significant role in releasing phosphorus (P) from soil insoluble phosphates to crops. Here, we evaluated the ability of dark septate endophytes (DSE) to solubilize calcium, aluminum and iron phosphates. DSE were isolated from the roots of wheat (Triticum aestivum) and the forages Panicum coloratura and Chloris gayana, whi...

Soybean (Glycine max L.) is one of the main crops in the world and its production has increased following the worldwide food demand. Soybean cropping is advancing towards marginal environments and thus being exposed to several biotic and abiotic stresses. Water stress, a major abiotic factor that limits crop production, occurs either permanently or...

Many microorganisms play a significant role in releasing phosphorus (P) from soil insoluble phosphates to crops. Here, we evaluated the ability of dark septate endophytes (DSE) to solubilize calcium, aluminum and iron phosphates. DSE were isolated from the roots of wheat (Triticum aestivum) and the forages Panicum coloratum and Chloris gayana, whic...

Uptake of Arsenic (As) in plant tissues can affect metabolism, causing physiological disorders, even death. As toxicity, but also pathogen infections trigger a generalised stress response called oxidative stress; however knowledge on the response of soybean (Glycine max L.) under multiple stressors is limited so far. Arbuscular mycorrhizal fungi (A...

Soybean (Glycine max L.) cropping is increasing in marginal environments, including water-limited lands, some of which are loaded with arsenic (As). Plants inoculated with mycorrhiza increased their tolerance to water stress. We studied the effect of a sudden and severe water stress on soybean inoculated with the mycorrhizal fungus Glomus intraradi...

Arsenic (As) in soils causes several detrimental effects, including death. Arsenic toxicity in soybean plants (Glycine max L.) has been little studied. Arbuscular mycorrhiza (AM) increase the tolerance of host plants to abiotic stress, like As. We investigated the effects of AM fungi on soybean grown in As-contaminated soils. A pot experiment was c...