Agricultural practices to improve nitrogen use efficiency through the use of arbuscular mycorrhizae: Basic and agronomic aspects

Verzeaux, Julien; Hirel, Bertrand; Dubois, Frédéric; Lea, Peter J.; Tétu, Thierry

doi:10.1016/j.plantsci.2017.08.004

Cited by 110 publications

(69 citation statements)

References 113 publications

(140 reference statements)

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“…However, it is clear that there will be considerable differences between locations, seasons and soil types [8,9]. Verzeaux et al (2017) review the effects of AM-colonization on crop nitrogen use efficiency and suggest that it is necessary to investigate which agricultural practices could be favorable to maximize the benefits of AMF [154]. Rotations to manage soil health also have a major impact on AMF species diversity [155].…”

Section: Translational Research For Crop Breedingmentioning

confidence: 99%

Trade-Offs in Arbuscular Mycorrhizal Symbiosis: Disease Resistance, Growth Responses and Perspectives for Crop Breeding

2017

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Abstract:There is an increasing need to develop high-yielding, disease-resistant crops and reduce fertilizer usage. Combining disease resistance with efficient nutrient assimilation through improved associations with symbiotic microorganisms would help to address this. Arbuscular mycorrhizal fungi (AMF) form symbiotic relationships with most terrestrial plants, resulting in nutritional benefits and the enhancement of stress tolerance and disease resistance. Despite these advantages, arbuscular mycorrhizal (AM) interactions are not normally directly considered in plant breeding. Much of our understanding of the mechanisms of AM symbiosis comes from model plants, which typically exhibit positive growth responses. However, applying this knowledge to crops has not been straightforward. In many crop plants, phosphate uptake and growth responses in AM-colonized plants are variable, with AM plants exhibiting sometimes zero or negative growth responses and lower levels of phosphate acquisition. Host plants must also balance the ability to host AMF with the ability to resist pathogens. Advances in understanding the plant immune system have revealed similarities between pathogen infection and AM colonization that may lead to trade-offs between symbiosis and disease resistance. This review considers the potential trade-offs between AM colonization, agronomic traits and disease resistance and highlights the need for translational research to apply fundamental knowledge to crop improvement.

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Section: Translational Research For Crop Breedingmentioning

confidence: 99%

Trade-Offs in Arbuscular Mycorrhizal Symbiosis: Disease Resistance, Growth Responses and Perspectives for Crop Breeding

2017

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“…From the point of view of the amount of yield and product repeatability, the best results were obtained at traditional fertilization. From the point of view of present-day quality standards in primary production, the agricultural system should be assessed using not only production indicators but also environmental indicators (Verzeaux et al, 2017). The manner of fertilizer application is of great importance for reaching set production and environmental goals which are always connected with an increase in fertilization efficiency (Mucheru-Muna et al, 2010;Niemiec et al, 2015a;Nkebiwe et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Productive and Environmental Efficiency of Slow-Release Fertilizers in Integrated Production of Napa Cabbage Depending on Application Method

Niemiec

Tabak

Paluch

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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The study aimed to assess the suitability of slow-release fertilizers in cultivation of napa cabbage in the integrated production system. The objective was realized on the basis of a strict field experiment set up on soil with granulometric composition of light loam. The dose of fertilizer was the first experimental factor, and the fertilizer application was the second factor. The slow-acting fertilizer was applied under each plant during planting of seedlings and in the second variant. The fertilizer was applied in the row, about 5 cm under the seedling root level. On the basis of the results obtained in the experiments, the indices showing nitrogen fertilization efficiency were calculated Fertilization significantly modified the quantity of obtained yield. In the control, without mineral fertilization, the crop yield was 23.32 Mg ha -1 . The largest yield was 52.27 Mg ha -1 . Larger yields and more advantageous productive and environmental efficiency were obtained in objects with row application of fertilizer. The most advantageous agronomic efficiency and nitrogen recovery efficiency were obtained in the combination of 400 kg ha -1 of slow-acting fertilizer with traditional supplementary PK fertilizers in the case of point application of fertilizers. In the case of row fertilizer application, it is possible to use 50% more of the fertilizer dose without compromising the quality of the crop. Higher doses of free-acting fertilizers increased the standard deviation of the mass of cabbage, which is not desirable for production. The results show that under conditions of low mineral content in the soil, the slow-acting fertilizers can be used at a low level.

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“…One of these processes might be related to the stimulation of arbuscular mycorrhizal fungi (AMF) providing more efficient access to water from deep soil layers. This hypothesis is supported by various recent studies (Verzeaux et al 2017;Wang et al 2017). The root profiles may be analyzed in light of the concept of "critical FRLD for water capture".…”

Section: Measured Root Traits Do Not Completely Explain How the Intermentioning

confidence: 59%

Intercrops improve the drought resistance of young rubber trees

Clermont-Dauphin

Dissataporn

Suvannang

et al. 2018

Agron. Sustain. Dev.

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The expansion of rubber cultivation into drought prone areas calls for innovative management to increase the drought resistance of the trees. The competition for water exerted by an intercrop in the upper soil layers will likely stimulate the growth of young rubber tree roots into deeper soil layers where water availability is more stable. This study examined the effects of a legume (Pueraria phaseoloides) and a grass (Vetiveria zizanoides) intercrop, on the fine root traits of young rubber trees (Hevea brasiliensis Müll. Arg.) established along a toposequence covering a range of soil depths in northeast Thailand. Two plots with and without the intercrops were set up in a 3-year-old rubber plantation. Tree girth, mortality rate, nutrient content in the leaves, predawn leaf water potential, and soil water content profiles were monitored over four successive years. Fine root length density, specific root length, fine root biomass, and fine root diameter of the rubber trees were measured in the fourth year. In shallow soils, the trees with the legume intercrop had a higher growth rate, a higher leaf nutrient content, and a higher fine root length density in the deepest soil layers than the controls, supporting the hypothesis of an adaptive root response, increasing drought resistance. However, the trees with the grass intercrop did not show this effect. In deep soils, specific root length was highest without the intercrops, and the soil water profile and predawn leaf water potential suggested that trees with intercrops benefited from increased water extraction below 110 cm depth. We showed, for the first time, that rubber tree root traits can be manipulated through intercropping to improve drought resistance. However, our results suggest intercropping might not reduce risks of tree mortality caused by drought in the shallowest soils of the subhumid area of northeast Thailand.

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Agricultural practices to improve nitrogen use efficiency through the use of arbuscular mycorrhizae: Basic and agronomic aspects

Cited by 110 publications

References 113 publications

Trade-Offs in Arbuscular Mycorrhizal Symbiosis: Disease Resistance, Growth Responses and Perspectives for Crop Breeding

Trade-Offs in Arbuscular Mycorrhizal Symbiosis: Disease Resistance, Growth Responses and Perspectives for Crop Breeding

Assessment of Productive and Environmental Efficiency of Slow-Release Fertilizers in Integrated Production of Napa Cabbage Depending on Application Method

Intercrops improve the drought resistance of young rubber trees

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