Interactions Between Higher Plants and Soil‐dwelling Organisms

Kuyper, Thomas W.; Goede, R.G.M. de

doi:10.1002/9781118452592.ch9

Cited by 6 publications

(4 citation statements)

References 73 publications

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“…AMF are considered to be of great importance for improving the mineral nutrition of the colonized plants, as their hyphae can access microsites [14,15]. Currently, circa 3617 plant species associate with AM [67]; however, it is estimated that 200,000 plant species could harbor this symbiosis [68]. The number of reports is continuously increasing.…”

Section: Redesigning Agro-ecosystems For Sustainabilitymentioning

confidence: 99%

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

et al. 2017

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Abstract:In order to achieve a desirable ecological and sustainable agriculture a thorough understanding of the plant-soil mycobiome is imperative. Commercial industrial agriculture alters greenhouse gas emissions, promotes loss of plant and soil biodiversity, increases pollution by raising atmospheric CO 2 , and releases pesticides, thus affecting both terrestrial and aquatic ecosystems. Diversified farming systems, including perennial cultivated pastures, are among worldwide strategies that aim to reduce terrestrial greenhouse gas emissions and deal with threats to global sustainability. Additionally, stimulation of soil microbes and appropriate soil management can influence soil interactions as well as the rates of organic matter decomposition and the release of gases. Agricultural soil microbial communities play a central role in ecosystem processes and are affected by biocontrol agents, biofertilizers, and exposure to pesticides, the extent to which is yet to be fully elucidated. Intercropping different plant species is beneficial, as this can increase carbon fixation by plants, transferring carbon to the soil, especially via mycorrhizas, thus modifying interplant interactions. This review focuses on agro-ecosystems, showing the latest advances in the plant-soil interface (the mycobiome) for an eco-efficient agricultural production.

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Section: Redesigning Agro-ecosystems For Sustainabilitymentioning

confidence: 99%

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

et al. 2017

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“…Symbiotic nitrogen (N) fixation reflects the ability of some plant species to fix gaseous N 2 from the air with the help of (a) bacteria collectively referred to as rhizobia (e.g. Rhizobiaceae, Burkholderiaceae), (b) actinobacteria in the genus Frankia , or (c) cyanobacteria in the family Nostocaceae (Kuyper & De Goede, 2013; Vitousek et al., 2013). Although other, non‐symbiotic N fixation processes are globally more widespread (Crews, 1999), symbiotic fixation generally accounts for the largest proportion of N fixation per unit area (Boring et al., 1988).…”

Section: Introductionmentioning

confidence: 99%

Global macroecology of nitrogen‐fixing plants

Tamme

Pärtel

Kõljalg

et al. 2020

Global Ecol. Biogeogr.

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AimPlants that host root‐symbiotic nitrogen‐fixing bacteria have an important role in driving terrestrial ecosystem processes, but N‐fixing ability is unequally distributed among plant taxa and ecosystems. Here we explore the large‐scale distribution of N‐fixing plant species worldwide.LocationGlobal.Time periodPresent.Major taxa studiedVascular plants.MethodsWe estimated root‐symbiotic N‐fixing plant species diversity (as Shannon entropy) and relative richness (log‐ratio of N‐fixing to non‐fixing plant species) for c. 7,800 km2 hexagonal grid cells using the NodDB and Global Biodiversity Information Facility (GBIF) databases. Additionally, we explored the distributions of plant species associated with rhizobia, actinobacteria or cyanobacteria (relative to other plant species), and the relative richness of N‐fixing trees (log‐ratio of N‐fixing to non‐fixing trees). We related N‐fixing plant species distribution to environmental (climate, soil) and biogeographical (biome, realm) variables using multiple linear regression.ResultsN‐fixing plant diversity and relative richness showed unimodal relationships with latitude. Diversity of N‐fixing plants was highest in warm and wet climates, but in dry biomes and in Australasia. The relative richness of N‐fixing plants was highest in warm and dry climates, in tropical and temperate grasslands and in Eurasia. Plants associated with cyanobacteria were more widely distributed near the equator, while those associated with rhizobia were more prevalent at the edge of the tropics, and those associated with actinobacteria at higher latitudes (especially in boreal forests). The relative richness of N‐fixing tree species was highest in cold and dry areas and in boreal forests, with contrasting peaks in the Northern and Southern Hemispheres.Main conclusionsThe distribution of N‐fixing plant species exhibits regional hotspots and coldspots related to both environmental conditions and biogeographical history. Global N‐fixing plant distributions are different for the key root‐symbiotic bacterial groups. Information about N‐fixing plant distribution can improve global models of ecosystem functions and contribute to understanding how plants respond to global change.

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“…One of these, the nifH gene coding nitrogenase reductase, has been accessed with molecular techniques for studies on microbial communities' potential to fix atmospheric N2 (Gaby & Buckley, 2014). The particular microbes include i) bacteria collectively referred to as rhizobia (e.g., Rhizobiaceae, Burkholderiaceae), ii) Actinobacteria from the genus Frankia, iii) Cyanobacteria from the Nostocaceae family, but also iv) free-living Bacteria and Archaea that have obtained nitrogenase via horizontal transfer (Kuyper & de Goede, 2013;Vitousek et al, 2013). Rhizobiaceae (a-proteobacteria) and Burkholderiaceae (bproteobacteria) are the most well-known N-fixing bacterial groups that nodulate mostly on legumes, although a few other plant genera can host rhizobia as well (Peix et al, 2015;Sprent et al, 2017;Tedersoo et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Global diversity and distribution of nitrogen-fixing bacteria in the soil

et al. 2023

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Our knowledge of microbial biogeography has advanced in recent years, yet we lack knowledge of the global diversity of some important functional groups. Here, we used environmental DNA from 327 globally collected soil samples to investigate the biodiversity patterns of nitrogen-fixing bacteria by focusing on the nifH gene but also amplifying the general prokaryotic 16S SSU region. Globally, N-fixing prokaryotic communities are driven mainly by climatic conditions, with most groups being positively correlated with stable hot or seasonally humid climates. Among soil parameters, pH, but also soil N content were most often shown to correlate with the diversity of N-fixer groups. However, specific groups of N-fixing prokaryotes show contrasting responses to the same variables, notably in Cyanobacteria that were negatively correlated with stable hot climates, and showed a U-shaped correlation with soil pH, contrary to other N-fixers. Also, the non-N-fixing prokaryotic community composition was differentially correlated with the diversity and abundance of N-fixer groups, showing the often-neglected impact of biotic interactions among bacteria.

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Interactions Between Higher Plants and Soil‐dwelling Organisms

Cited by 6 publications

References 73 publications

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

Global macroecology of nitrogen‐fixing plants

Global diversity and distribution of nitrogen-fixing bacteria in the soil

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