Variability in colonization of arbuscular mycorrhizal fungi and its effect on mycorrhizal dependency of improved and unimproved soybean cultivars

Breeding selection of germplasm under fertilized conditions may reduce the frequency of genes that promote mycorrhizal associations. This study was developed to compare variability in mycorrhizal colonization and its effect on mycorrhizal dependency (MD) in improved soybean genotypes (I-1 and I-2) with differential tolerance to drought stress, and in unimproved soybean genotypes (UI-3 and UI-4). As inoculum, a mixed native arbuscular mycorrhizal fungi (AMF) was isolated from soybean roots, showing spores mostly of the species Funneliformis mosseae. At 20 days, unimproved genotypes followed by I-2, showed an increase in arbuscule formation, but not in I-1. At 40 days, mycorrhizal plants showed an increase in nodulation, this effect being more evident in unimproved genotypes. Mycorrhizal dependency, evaluated as growth and biochemical parameters from oxidative stress was increased in unimproved and I-2 since 20 days, whereas in I-1, MD increased at 40 days. We cannot distinguish significant differences in AMF colonization and MD between unimproved and I-2. However, variability among improved genotypes was observed. Our results suggest that selection for improved soybean genotypes with good and rapid AMF colonization, particularly high arbuscule/hyphae ratio could be a useful strategy for the development of genotypes that optimize AMF contribution to cropping systems.

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Community of Arbuscular Mycorrhizal Fungi in Soybean Roots after Cultivation with Different Cropping Systems

Japan Agricultural Research Quarterly JARQ ◽

10.6090/jarq.48.279 ◽

2014 ◽

Vol 48 (3) ◽

pp. 279-290 ◽

Cited By ~ 2

Author(s):

Tomoko KOJIMA ◽

Norikuni OKA ◽

Toshihiko KARASAWA ◽

Keiki OKAZAKI ◽

Shotaro ANDO ◽

...

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Cropping Systems ◽

Arbuscular Mycorrhizal ◽

Soybean Roots

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Managing arbuscular mycorrhizal fungi in cropping systems

Canadian Journal of Plant Science ◽

10.4141/p03-159 ◽

2005 ◽

Vol 85 (1) ◽

pp. 31-40 ◽

Cited By ~ 95

Author(s):

C. Plenchette ◽

C. Clermont-Dauphin ◽

J. M. Meynard ◽

J. A. Fortin

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Crop Production ◽

Plant Pathogens ◽

Cropping Systems ◽

Arbuscular Mycorrhizal ◽

Biological Interactions ◽

Agricultural Systems ◽

Mycorrhizal Dependency ◽

Conventional Agriculture

Market globalization, demographic pressure, and environmental degradation have led us to reconsider many of our current agricultural systems. The heavy use of chemical inputs, including fertilizers and pesticides, has resulted in pollution, decreased biodiversity in intensively-farmed regions, degradation of fragile agro-ecosystems, and prohibitive costs for many farmers. Low input sustainable cropping systems should replace conventional agriculture, but this requires a more comprehensive understanding of the biological interactions within agro-ecosystems. Mycorrhizal fungi appear to be the most important telluric organisms to consider. Mycorrhizae, which result from a symbiosis between these fungi and plant roots, are directly involved in plant mineral nutrition, the control of plant pathogens, and drought tolerance. Most horticultural and crop plants are symbiotic with arbuscular mycorrhizal fungi. Mycorrhizal literature is abundant, showing that stimulation of plant growth can be mainly attributed to improved phosphorous nutrition. Although the mycorrhizal potential of its symbiosis to improve crop production is widely recognized, it is not implemented in agricultural systems. There is an urgent need to improve and widely apply analytical methods to evaluate characteristics such as, relative field mycorrhizal dependency, soil mycorrhizal infectivity, and mycorrhizal receptivity of soil. Decreased use of fertilizers, pesticides, and tillage will favour arbuscular mycorrhizal fungi. However, shifting from one system to a more sustainable one is not easy since all components of the cropping system are closely linked. Different cases, from actual agricultural practices in different countries, are analyzed to highlight situations in which mycorrhizae might or might not play a role in developing more sustainable agriculture. Key words: Cropping systems, mycorrhizae, sustainability, technical itineraries, rotation

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Effects of arbuscular mycorrhizal fungi inoculation and crop sequence on root-associated microbiome, crop productivity and nutrient uptake in wheat-based and flax-based cropping systems

Applied Soil Ecology ◽

10.1016/j.apsoil.2021.104136 ◽

2021 ◽

Vol 168 ◽

pp. 104136

Author(s):

Yunliang Li ◽

Mario Laterrière ◽

Chih-Ying Lay ◽

Rim Klabi ◽

Jacynthe Masse ◽

...

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Nutrient Uptake ◽

Mycorrhizal Fungi ◽

Cropping Systems ◽

Arbuscular Mycorrhizal ◽

Crop Productivity ◽

Crop Sequence

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Soil Fungal Resources in Annual Cropping Systems and Their Potential for Management

BioMed Research International ◽

10.1155/2014/531824 ◽

2014 ◽

Vol 2014 ◽

pp. 1-15 ◽

Cited By ~ 36

Author(s):

Walid Ellouze ◽

Ahmad Esmaeili Taheri ◽

Luke D. Bainard ◽

Chao Yang ◽

Navid Bazghaleh ◽

...

Keyword(s):

Mycorrhizal Fungi ◽

Soil Fungi ◽

Cropping Systems ◽

Arbuscular Mycorrhizal ◽

Soil Biodiversity ◽

Agricultural Ecosystems ◽

Agronomic Practices ◽

Rhizosphere Fungi ◽

Fungal Organisms ◽

Selection Of

Soil fungi are a critical component of agroecosystems and provide ecological services that impact the production of food and bioproducts. Effective management of fungal resources is essential to optimize the productivity and sustainability of agricultural ecosystems. In this review, we (i) highlight the functional groups of fungi that play key roles in agricultural ecosystems, (ii) examine the influence of agronomic practices on these fungi, and (iii) propose ways to improve the management and contribution of soil fungi to annual cropping systems. Many of these key soil fungal organisms (i.e., arbuscular mycorrhizal fungi and fungal root endophytes) interact directly with plants and are determinants of the efficiency of agroecosystems. In turn, plants largely control rhizosphere fungi through the production of carbon and energy rich compounds and of bioactive phytochemicals, making them a powerful tool for the management of soil fungal diversity in agriculture. The use of crop rotations and selection of optimal plant genotypes can be used to improve soil biodiversity and promote beneficial soil fungi. In addition, other agronomic practices (e.g., no-till, microbial inoculants, and biochemical amendments) can be used to enhance the effect of beneficial fungi and increase the health and productivity of cultivated soils.

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Selection of efficient vesicular arbuscular mycorrhizal fungi for inoculating the mango rootstock cultivar ‘Nekkare’

Scientia Horticulturae ◽

10.1016/0304-4238(94)90093-0 ◽

1994 ◽

Vol 59 (1) ◽

pp. 69-73 ◽

Cited By ~ 4

Author(s):

Balakrishna Reddy ◽

D.J. Bagyaraj

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Arbuscular Mycorrhizal ◽

Vesicular Arbuscular Mycorrhizal Fungi ◽

Vesicular Arbuscular ◽

Selection Of

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Enhancement of Colonisation of Soybean Roots by Arbuscular Mycorrhizal Fungi Using Vermicompost and Biochar

Agriculture Forestry and Fisheries ◽

10.11648/j.aff.20160503.17 ◽

2016 ◽

Vol 5 (3) ◽

pp. 71

Author(s):

Njunge Leah Wathira

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Arbuscular Mycorrhizal ◽

Soybean Roots

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Sunflower response to inoculation with single and mixed species of arbuscular mycorrhizal fungi: Agronomic characteristics

Acta agriculturae Slovenica ◽

10.14720/aas.2019.113.2.13 ◽

2019 ◽

Vol 113 (2) ◽

pp. 321

Author(s):

Mazen IBRAHIM

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Glomus Intraradices ◽

Arbuscular Mycorrhizal ◽

Abundant Species ◽

Growth And Yield ◽

Agricultural Field ◽

Mycorrhizal Dependency ◽

Agronomic Characteristics ◽

The Impact

The impact of indigenous arbuscular mycorrhizal fungi (AMF) on agronomic characteristics of sunflower (Helianthus annuus L.) was evaluated in a pot experiment. The indigenous AMF, including Glomus intraradices, Glomus mosseae, and Glomus viscosum, were isolated from an agricultural field in which cotton and sunflower plants were grown. The most abundant species (G. viscosum) was multiplied in a monospecific culture. Sunflower plants were inoculated with the mixture of three selected AMF species or solely with G. viscosum. The number of leaves, shoot length, head diameter, above ground biomass, and seeds mass were significantly higher in the plant inoculated with AMF mixture followed by individual inoculation with G. viscosum followed by the control. AMF mixture outperformed the G. viscosumby increasing mycorrhizal dependency and mycorrhizal inoculation effect of sunflower. The results indicate that AMF mixture could be considered as a good inoculum for improving growth and yield of sunflower in sustainable agriculture.

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Selection of arbuscular mycorrhizal fungi for sugarcane in four soils with the presence of dark septate endophytes

Acta Scientiarum Agronomy ◽

10.4025/actasciagron.v42i1.42477 ◽

2019 ◽

Vol 42 ◽

pp. e42477 ◽

Cited By ~ 2

Author(s):

Rosalba Ortega Fors ◽

Orivaldo José Saggin Júnior ◽

Marco Aurélio Carbone Carneiro ◽

Ricardo Luis Louro Berbara

Keyword(s):

Arbuscular Mycorrhizal Fungi ◽

Mycorrhizal Fungi ◽

Root Colonization ◽

Arbuscular Mycorrhizal ◽

Dark Septate Endophytes ◽

P Availability ◽

P Nutrition ◽

P Content ◽

Selection Of ◽

Scutellospora Calospora

The present study aimed to select efficient arbuscular mycorrhizal fungi (AMF) for sugarcane growth and P nutrition in four soils that spontaneously contained dark septate endophytes (DSE). The effect of nine AMF isolates was evaluated individually in sugarcane presprouted seedlings (SP81-3250) grown under greenhouse conditions for a 120-day period. The isolates that stimulated plant growth in the soils with low P availability were Acaulospora colombiana (ACOL), Claroideoglomus etunicatum (CETU), Gigaspora margarita (GMAR), Rhizophagus clarus (RCLA) and Scutellospora calospora (SCAL). Compared to the Yellow Argisol, which had the highest P level, the Red-Yellow Argisol, with an intermediate P content, increased plant height. Compared to the other treatments, inoculation with ACOL, RCLA, and SCAL resulted in higher foliar P content in plants grown in soils with high to intermediate P levels. Root colonization by AMF and DSE was verified in the plants, with the coexistence of both fungal groups in the same plant and/or root fragment. However, AMF colonization was low compared to DSE colonization. The cooccurrence of DSE and AMF was higher in the plants inoculated with ACOL, RCLA, SCAL, and Dentiscutata heterogama. ACOL, CETU, GMAR, RCLA, and SCAL are AMF isolates that have the potential to establish a mycorrhizal inoculant for sugarcane that would be effective in several soils.

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