Arbuscular mycorrhizal fungal species composition, propagule density, and soil alkaline phosphatase activity in response to continuous and alternate no-tillage in Northern China

Hu, Junli; Yang, Anna; Wang, Junhua; Zhu, Anning; Dai, Ji; Wong, Ming Hung; Lin, Xiangui

doi:10.1016/j.catena.2015.05.023

Cited by 23 publications

(14 citation statements)

References 37 publications

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“…In contrast, annually ploughed soils were characterized by a high phosphate and nitrate content ( Figure 1D). Although a positive correlation between AMF spore density and alkaline phosphatase activity has already been reported in the literature [27], such a positive correlation has never been described for soil DH activity. Nevertheless, the finding that a decrease in AMF spore density is associated with soils exhibiting the lowest value of DH activity (i.e., CT-NX) is not surprising because both parameters are known to be disrupted by intensive tillage and high levels of inorganic N [17].…”

Section: Resultsmentioning

confidence: 81%

“…The lower density of AMF spores in CT treatments could be explained by hyphal networks disturbance resulting from ploughing [26]. However, Hu et al [27] did not find any impact of tillage on AMF spore density in a sandy-loam soil in a temperate monsoon climate, which could be due to specific physical characteristics of such type of soil. In agreement with our results, Curaqueo et al [28] showed that there was a larger density of AMF spores after six years of experimentation under NT conditions as compared to CT.…”

Section: Resultsmentioning

confidence: 87%

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Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

et al. 2017

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Arbuscular mycorrhizal fungi (AMF) play major roles in nutrient acquisition by crops and are key actors of agroecosystems productivity. However, agricultural practices can have deleterious effects on plant-fungi symbiosis establishment in soils, thus inhibiting its potential benefits on plant growth and development. Therefore, we have studied the impact of different soil management techniques, including conventional moldboard ploughing and no-till under an optimal nitrogen (N) fertilization regime and in the absence of N fertilization, on AMF spore density and soil chemical, physical, and biological indicators in the top 20 cm of the soil horizon. A field experiment conducted over six years revealed that AMF spore density was significantly lower under conventional tillage (CT) combined with intensive synthetic N fertilization. Under no-till (NT) conditions, the density of AMF spore was at least two-fold higher, even under intensive N fertilization conditions. We also observed that there were positive correlations between spore density, soil dehydrogenase enzyme activity, and soil penetration resistance and negative correlations with soil phosphorus and mineral N contents. Therefore, soil dehydrogenase activity and soil penetration resistance can be considered as good indicators of soil quality in agrosystems. Furthermore, the high nitrate content of ploughed soils appears to be detrimental both for the dehydrogenase enzyme activity and the production of AMF spores. It can be concluded that no-till, by preventing soil from structural and chemical disturbances, is a farming system that preserves the entire fungal life cycle and as such the production of viable spores of AMF, even under intensive N fertilization.

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Section: Resultsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 87%

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

et al. 2017

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“…Ramos-Zapata et al 2012;Higo et al 2013;S€ ale et al 2015), but not consistent (e.g. Hu et al 2015;Njeru et al 2015), with alternative tillage or cover cropping suggest that determining how to manage AMF community composition will be somewhat site-specific, and tailored to farming goals for productivity and environmental quality. The 28Á5% increase in AMF colonization of cash crop roots following a winter cover crop may be a result of increased AMF spore abundance in soil (Lehman et al 2012;Njeru et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Ecological intensification and arbuscular mycorrhizas: a meta‐analysis of tillage and cover crop effects

Bowles

Jackson

Loeher

et al. 2016

Journal of Applied Ecology

193

102

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1. Reliance on ecosystem services instead of synthetic, non-renewable inputs is increasingly seen as key to achieving food security in an environmentally sustainable way. This process, known as ecological intensification, will depend in large part on enhancing below-ground biological interactions that facilitate resource use efficiency. Arbuscular mycorrhizas (AM), associations formed between the roots of most terrestrial plant species and a specialized group of soil fungi, provide valuable ecosystem services, but the full magnitude of these services may not be fully realized under conventional intensively managed annual agricultural systems. 2. Here, we use meta-analysis to assess how reducing soil disturbance and periods without roots in agricultural systems affect the formation of AM and the diversity and community composition of arbuscular mycorrhizal fungi (AMF). We compiled data from 54 field studies across five continents that measured effects of tillage and/or cover cropping on AMF colonization and/or communities and assessed effects of management and environmental factors on these responses. 3. Less intensive tillage and winter cover cropping similarly increased AMF colonization of summer annual cash crop roots by $ 30%. The key variables influencing the change in AMF colonization were the type of cover crop or the type of alternative tillage, suggesting that farmers can optimize combinations of tillage and cover crops that most enhance AM formation, particularly with no-till systems and legume cover crops. 4. Richness of AMF taxa increased by 11% in low-intensity vs. conventional tillage regimes. Several studies showed changes in diversity and community composition of AMF with cover cropping, but these responses were not consistent. 5. Synthesis and applications. This meta-analysis indicates that less intensive tillage and cover cropping are both viable strategies for enhancing root colonization from indigenous arbuscular mycorrhizal fungi (AMF) across a wide range of soil types and cash crop species, and possibly also shifting AMF community structure, which could in turn increase biologically based resource use in agricultural systems.

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“…The introduced fungi may have increased sporulation or induced some native mycorrhizal fungi to sporulate. Acaulospora species produce many spores, and they frequently occur in maize fields (Hu et al, 2015). While evaluating the influence of maize and wheat on AMF community, Hu et al (2015) observed great abundance of Acaulospora spores and attributed such dominance to the production of small spores in large quantity and in a short period of time.…”

Section: Discussionmentioning

confidence: 99%

“…Acaulospora species produce many spores, and they frequently occur in maize fields (Hu et al, 2015). While evaluating the influence of maize and wheat on AMF community, Hu et al (2015) observed great abundance of Acaulospora spores and attributed such dominance to the production of small spores in large quantity and in a short period of time. From an agricultural point of view, AMF isolates producing large amount of spores that germinate quickly are of interest to the application in the soil, considering that the glomerospores are excellent infective propagules promoters of mycorrhizal symbiosis.…”

Section: Discussionmentioning

confidence: 99%

Mycorrhizal inoculation and application of cattle manure in field-grown maize in semiarid conditions

Lino

Silva

Martins³

et al. 2018

Ex. Agric.

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We evaluated the effects of cattle manure and inoculation with arbuscular mycorrhizal fungi (AMF) in maize plants growing in a semiarid area of Brazilian north-east in 2012 and 2013. Three isolates of AMF (Acaulosporalongula URM-FMA 07 and URM-FMA 03, Claroideoglomusetunicatum UNIVASF 06A) were used, with or without the application of cattle manure, during two growing cycles. In the first year, significant effects of inoculation were detected for straw yield only when the manure was applied. In the second year, there was an interaction between fertilisation and inoculation for plant height and grain yield, with the highest values in the fertilised treatments. Inoculation with A. longula demonstrated that mycorrhizal inoculation in field-grown plants could be an alternative management for improving plant growth and grain yield, reducing the use of cattle manure. The AMF sporulation and mycorrhizal colonisation were improved after inoculation, and A. longula URM-FMA 07 increased sporulation by more than 15 times while inoculation with C. etunicatum increased sporulation by more than 3 times. The mycorrhizal inoculation is a management practice that can be useful for recovering or maintaining AMF infective propagules in soil, showing potential to be used in large-scale field conditions in Brazilian semiarid. Although mycorrhisation presents high agricultural relevance due to benefits promoted to the soil and plants, the knowledge about the factors influencing the interactions among microorganisms, soil and plants need to be broadened aiming to achieve successful crop management in semiarid regions.

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Arbuscular mycorrhizal fungal species composition, propagule density, and soil alkaline phosphatase activity in response to continuous and alternate no-tillage in Northern China

Cited by 23 publications

References 37 publications

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

Spore Density of Arbuscular Mycorrhizal Fungi is Fostered by Six Years of a No-Till System and is Correlated with Environmental Parameters in a Silty Loam Soil

Ecological intensification and arbuscular mycorrhizas: a meta‐analysis of tillage and cover crop effects

Mycorrhizal inoculation and application of cattle manure in field-grown maize in semiarid conditions

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