Lost in diversity: the interactions between soil‐borne fungi, biodiversity and plant productivity

New Phytologist, Journal Year: 2018, Volume and Issue: 218(2), P. 542 - 553

Published: Feb. 22, 2018

There is consensus that plant species richness enhances productivity within natural grasslands, but the underlying drivers remain debated. Recently, differential accumulation of soil-borne fungal pathogens across diversity gradient has been proposed as a cause this pattern. However, below-ground environment generally treated 'black box' in biodiversity experiments, leaving these fungi unidentified. Using next generation sequencing and pathogenicity assays, we analysed community composition root-associated from experiment to examine if evidence exists for host specificity negative density dependence interplay between fungi, productivity. Plant were colonised by distinct (pathogenic) communities isolated showed negative, species-specific effects on growth. Moreover, 57% pathogenic operational taxonomic units (OTUs) recorded monocultures not detected eight plots, suggesting loss OTUs with diversity. Our work provides strong density-dependent grasslands. substantiates hypothesis root are an important driver biodiversity-ecosystem functioning relationships.

Language: Английский

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Increased soil phosphorus availability induced by faba bean root exudation stimulates root growth and phosphorus uptake in neighbouring maize

New Phytologist, Journal Year: 2015, Volume and Issue: 209(2), P. 823 - 831

Published: Aug. 27, 2015

Summary Root growth is influenced by soil nutrients and neighbouring plants, but how these two drivers affect root interactions regulate plant dynamics poorly understood. Here, between the roots of maize ( Zea mays ) faba bean Vicia are characterized. Maize was grown alone (maize) or with (maize/maize) (maize/faba bean) as competitors under five levels phosphorus (P) supply, homogeneous heterogeneous P distribution. had longer length greater shoot biomass content when than maize. At each supply rate, a smaller system exudation citrate acid phosphatase, suggesting capacity to mobilize in rhizosphere. Heterogeneous availability enhanced root‐length density not bean. proliferation P‐rich patches associated increased uptake. Increased localized application presence stimulated morphological plasticity maize/faba mixture, that plants can be modified availability.

Language: Английский

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Maize-soybean strip intercropping: Achieved a balance between high productivity and sustainability

Journal of Integrative Agriculture, Journal Year: 2018, Volume and Issue: 17(4), P. 747 - 754

Published: April 1, 2018

Intercropping is one of the most vital practice to improve land utilization rate in China that has limited arable resource. However, traditional intercropping systems have many disadvantages including illogical field lay-out crops, low economic value, and labor deficiency, which cannot balance crop production agricultural sustainability. In view this, we developed a novel soybean strip model using maize as partner, regular maize-soybean mainly popularized northern relay-strip principally extended southwestern China. Compared systems, main innovation style our present distance two adjacent rows are shrunk narrow strip, called wide between strips expanded reserving for growth or three plants. The outer enough light use efficiency improvement tractors working strips. Importantly, optimal cultivar screening increase plant density achieved high yield both crops increased equivalent ratio 2.2. Annually alternative rotation maize- soybean-strips grain next seasonal maize, improved absorption nitrogen, phosphorus, potasium while prevented continuous cropping obstacles. Extra was obtained without affecting balanced

Language: Английский

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Major Crop Species Show Differential Balance between Root Morphological and Physiological Responses to Variable Phosphorus Supply

Frontiers in Plant Science, Journal Year: 2016, Volume and Issue: 7

Published: Dec. 21, 2016

The relationship between root morphological and physiological responses to variable P supply in different plant species is poorly understood. We compared seven crop (

Language: Английский

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How belowground interactions contribute to the coexistence of mycorrhizal and non-mycorrhizal species in severely phosphorus-impoverished hyperdiverse ecosystems

Plant and Soil, Journal Year: 2017, Volume and Issue: 424(1-2), P. 11 - 33

Published: Sept. 30, 2017

Language: Английский

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Responses of rhizosphere soil properties, enzyme activities and microbial diversity to intercropping patterns on the Loess Plateau of China

Soil and Tillage Research, Journal Year: 2019, Volume and Issue: 195, P. 104355 - 104355

Published: Aug. 3, 2019

Language: Английский

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Diversity and Co-occurrence Patterns of Soil Bacterial and Fungal Communities in Seven Intercropping Systems

Frontiers in Microbiology, Journal Year: 2018, Volume and Issue: 9

Published: July 6, 2018

Intercropping plays a vital role in greenhouse production, and affects soil physicochemical properties microbial communities structure, but influences of intercropping on the relationship microorganisms are reported continuous cropping rarely. Here, we investigated effects seven systems [alfalfa (Medicago sativa L.)/cucumber, trifolium (Trifolium repens wheat (Triticum aestivum rye (Secale cereale chrysanthemum (Chrysanthemum coronrium rape (Brassica campestris mustard juncea L.)/cucumber] bacterial fungal compared to cucumber system greenhouse. The results showed that increased OTU richness diversity, diversity was abundant trifolium-cucumber mustard-cucumber systems. Nevertheless, there no significant differences structure between monoculture Redundancy analysis indicated composition indirectly influenced by properties. In addition, network demonstrated simple inter-relationships taxa were observed soil, trifolium, wheat, had complex connection taxa. Taken together, as intercrops significantly diversity. Moreover, strongly changed relationships taxa, though did not shape notably structure.

Language: Английский

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Long-term continuous cropping of soybean is comparable to crop rotation in mediating microbial abundance, diversity and community composition

Soil and Tillage Research, Journal Year: 2019, Volume and Issue: 197, P. 104503 - 104503

Published: Nov. 19, 2019

Language: Английский

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Designing intercrops for high yield, yield stability and efficient use of resources: Are there principles?

Advances in agronomy, Journal Year: 2019, Volume and Issue: unknown, P. 1 - 50

Published: Dec. 9, 2019

Language: Английский

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Root ethylene mediates rhizosphere microbial community reconstruction when chemically detecting cyanide produced by neighbouring plants

Microbiome, Journal Year: 2020, Volume and Issue: 8(1)

Published: Jan. 18, 2020

Abstract Background Stress-induced hormones are essential for plants to modulate their microbiota and dynamically adjust the environment. Despite emphasis of role phytohormone ethylene in plant physiological response heterospecific neighbour detection, less is known about how this activated signal mediates focal rhizosphere enhance fitness. Here, using 3 years peanut ( Arachis hypogaea L.), a legume, cyanide-containing cassava Manihot esculenta Crantz) intercropping monocropping field, pot hydroponic experiments addition exogenous application soil incubation experiments, we found that ethylene, cyanide-derived signal, associated with chemical identification neighbouring microbial re-assemblage rhizosphere. Results Ethylene production roots can be triggered by cyanide plants. This gaseous alters composition re-assembles co-occurrence network shifting abundance an actinobacterial species, Catenulispora sp., which becomes keystone intercropped The re-assembled provide more available nutrients support seed production. Conclusions Our findings suggest root acts as dual role. It plays perceiving biochemical cues from interspecific neighbours, also has regulatory function mediating assembly, thereby enhancing fitness improving discovery provides promising direction develop novel strategies targeted manipulations microbiome through signals.

Language: Английский

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