Mycorrhizal root colonization in maize fields is more affected by soil management and climate conditions than by plant genotype

Meyer, Edenilson; Betancur-Agudelo, Marcelo; Ventura, Bárbara Santos; Anjos, Karina Goulart dos; Scarsanella, Juliana do Amaral; Vieira, André Steiner; Mendes, Lucas William; Stoffel, Shantau Camargo Gomes; Munarini, Anderson; Soares, Cláudio Roberto Fonsêca Sousa; Lovato, Paulo Emílio

doi:10.1007/s00203-021-02429-w

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…Arbuscules as mycorrhizal structures have a short life span and disappear after a few days of formation, continued by the formation of new arbuscules ( Montero et al., 2019 ). Vesicles, however, are long-life storage structures, with a primary role in nutrient storage, a deposit that is released during the plant growth stages with higher nutritional requirements ( Ortiz-Ceballos et al., 2007 ; Meyer et al., 2021 ). Even the low general values of these structures are present along the entire root and remain present after the arbuscules are digested.…”

Section: Discussionmentioning

confidence: 99%

Models of mycorrhizal colonization patterns and strategies induced by biostimulator treatments in Zea mays roots

et al. 2022

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Agronomic inputs and technologies, especially fertilizers, act on the evolution of the symbiotic partnership between arbuscular mycorrhizal fungi and cultivated plants. The use of the MycoPatt method for the assessment of mycorrhizas in maize roots leads to the extraction of large parameter databases with an increased resolution over the colonization mechanism. The application of a biostimulator treatment on plants acted toward a reduction of root permissiveness for mycorrhizas. The phenomenon was noticeable through an increased colonization variability that overlapped with plant nutritional needs. The annual characteristic of the plant was highlighted by the simultaneous presence of arbuscules and vesicles, with a high share of arbuscules in the advanced phenophases. Colonized root parts presented numerous arbuscule-dominated areas in all phenophases, which indicated a continuous formation of these structures and an intense nutrient transfer between partners. Mycorrhizal maps showed the slowing effect of the biostimulators on colonization, with one phenophase delay in the case of biostimulated plants compared to the ones without biostimulators. The forecast models presented gradual colonization in plants without biostimulators, with the expansion of new hyphal networks. The use of biostimulators on plants exhibited a lower permissiveness for new colonization areas, and the mechanism relies on hyphae developed in the former phenophases.

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Section: Discussionmentioning

confidence: 99%

Models of mycorrhizal colonization patterns and strategies induced by biostimulator treatments in Zea mays roots

et al. 2022

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“…They also enhance water absorption under water-deficit conditions. Many factors can affect the benefits of AMF for agriculturally important species, including plant genotypes [7], fungal species/isolates [32], and soil and climatic conditions [33]. This highlights the need to select fungal isolates for symbiotic efficiency specific to the plant species of interest, as well as to evaluate this efficiency under varying soil fertility levels, particularly in assessing phosphorus availability.…”

Section: Direct Mechanisms For Promoting Plant Growthmentioning

confidence: 99%

Applications and Market of Micro-Organism-Based and Plant-Based Inputs in Brazilian Agriculture

Soares,

Hernández,

da Silva

et al. 2023

Plants

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The use of plant-based and micro-organism-based biological inputs is a sustainable agricultural practice. It promotes a suitable and better utilization of non-renewable resources in the environment. The benefits of using micro-organisms are associated with direct and indirect mechanisms, mainly related to improvements in the absorption and availability of nutrients, resulting in a consequent impact on plant growth. The main benefits of using biochemical pesticides are the promotion of sustainability and the management of resistance to pests and diseases. Although the use of micro-organisms and botanical metabolites is a promising agricultural alternative, they are still primarily concentrated in grain crops. There is a huge opportunity to expand the plant-based and micro-organism-based biological inputs used in agriculture due to the wide range of mechanisms of action of those products. At a global level, several terminologies have been adopted to characterize biological inputs, but many terms used conflict with Brazilian legislation. This review will clarify the classes of biological inputs existing in Brazil as well as present the application and evolution of the market for microbiological and plant-based inputs.

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“…The most common procedures in conventional farming are using selected hybrid seeds and applying synthetic insecticides and fungicides (Busse et al, 2001). Farmers growing landrace maize rely more on organic fertilizers than those using modern hybrids, and they also avoid or reduce the use of synthetic agrochemical and soluble fertilizers (Meyer et al, 2021). However, most management procedures, such as tillage or no‐tillage, do not differ among maize producers in the region where this work was carried out.…”

Section: Introductionmentioning

confidence: 99%

Decrease in faeces removal and soil bioturbation by dung beetles in genetically modified maize plantations in southern Brazil

Ferreira

Lovato

Hernández

2023

Entomologia Exp Applicata

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Ecosystem functions are the product of the interaction between living and non‐living components, providing goods and services that satisfy the needs of humans and other organisms, directly or indirectly. Dung beetles (Coleoptera: Scarabaeidae, Scarabaeinae) contribute to soil improvement through their feeding and reproductive behaviour by removing and burying faeces and thus participating in processes associated with nutrient cycling. Our aim was to investigate the structure of the community of beetles, biomass, and the ecosystem functions performed by them in maize plantations on five farms with GM maize, five with unmodified hybrids, and five with landrace (traditional) maize. We measured faecal removal, soil bioturbation, richness, abundance, and biomass of the dung beetle community. Arenas to quantify functions were installed to measure faeces' burial and the soil turned over by dung beetles. After measuring the functions, beetles were sampled with baited pitfall traps installed at the same sampling points. Ground cover was measured at all sites. Further, nesting houses were installed on each field to check for nesting inside the plantations. We recorded a total of 198 dung beetles belonging to 18 species. The lowest abundance occurred in GM maize plantations, and the highest abundance was found in conventional maize plantations. Dung beetle nesting activity was higher in landrace maize crops. Faeces removal and soil bioturbation had lower values in GM maize fields, mainly due to a decrease in large paracoprids (tunnelers), which are responsible for most ecosystem functions.

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Mycorrhizal root colonization in maize fields is more affected by soil management and climate conditions than by plant genotype

Cited by 8 publications

References 38 publications

Models of mycorrhizal colonization patterns and strategies induced by biostimulator treatments in Zea mays roots

Models of mycorrhizal colonization patterns and strategies induced by biostimulator treatments in Zea mays roots

Applications and Market of Micro-Organism-Based and Plant-Based Inputs in Brazilian Agriculture

Decrease in faeces removal and soil bioturbation by dung beetles in genetically modified maize plantations in southern Brazil

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