Changes in microbial biomass and activity support ecological intensification of marginal land through cultivation of perennial wheat in organic agriculture

Audu, Varentta; Ruf, Thorsten; Vogt-Kaute, Werner; Emmerling, Christoph

doi:10.1080/01448765.2022.2040589

Cited by 8 publications

(11 citation statements)

References 72 publications

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“…Pastures and forage crops are well known for their ecosystem service benefits (e.g., soil health), and have large ranges that encompass many different cropping systems (Aponte et al, 2019;Martin et al, 2020;Teixeira et al, 2021). The perennial grain Kernza is one example of the potential for perennial crops to improve soil quality and water regulation (Audu et al, 2022;Rakkar et al, 2023;Reilly et al, 2022;van der Pol et al, 2022) perennials to provide these ecosystem benefits is one reason they are a powerful climate adaptation tool. Perennials also have a longer growing season than annuals, thus allowing these crops to capture and utilize water that is available outside the typical annual crop growing season (Vico & Brunsell, 2018).…”

Section: 3mentioning

confidence: 99%

Adapting perennial grain and oilseed crops for climate resiliency

et al. 2023

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Climate change is threatening the status quo of agricultural production globally.Perennial cropping systems could be a useful strategy to adapt agriculture to a changing climate. Current and future perennial row crop systems have many and varied applications and these systems can respond differently than annuals to agricultural challenges resulting from climate change, such as shifting ranges of plant, pathogen, and animal species and more erratic weather patterns. To capitalize on attributes of Abbreviations: GHG, greenhouse gas; TLI, the intermediate wheatgrass population; UAS, unmanned aerial systems.

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Section: 3mentioning

confidence: 99%

Adapting perennial grain and oilseed crops for climate resiliency

et al. 2023

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“…A wide array of perennial grain crops could likely be developed either by direct domestication of wild perennial species or wide hybridization between crops and related perennials. Perennial wheat with potential to improve soil quality ( Audu et al, 2022 ) is being developed through wide hybridization ( Hayes et al, 2018 ). A direct domestication program is underway to develop the perennial sunflower relative Silphium integrifolium into a dual-purpose forage and grain crop ( Van Tassel et al, 2017 ).…”

Section: How Can More Carbon Be Retained In Soil and Biomass?mentioning

confidence: 99%

Climate change challenges, plant science solutions

et al. 2022

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Climate change is a defining challenge of the 21st century, and this decade is a critical time for action to mitigate the worst effects on human populations and ecosystems. Plant science can play an important role in developing crops with enhanced resilience to harsh conditions (e.g., heat, drought, salt stress, flooding, disease outbreaks) and engineering efficient carbon-capturing and carbon-sequestering plants. Here, we present examples of research being conducted in these areas and discuss challenges and open questions as a call to action for the plant science community.

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“…Therefore, it is necessary to adopt sustainable agricultural practices that could either decrease the agricultural impacts on climate and at the same time enhance agriculture resilience. The cultivation of perennial grain cropping systems, mostly in marginal land, has been proposed as an innovative method to face climate changes and restore soil health ( Glover et al., 2010 ; Audu et al., 2022b ).…”

Section: Introductionmentioning

confidence: 99%

“…Permanent soil cover and reduced soil disturbance also support highly structured and complex food webs, thereby boosting functional biodiversity and conditions for soil diversity conservation ( Rasche et al., 2017 ; Sprunger et al., 2019 ). Moreover, extensive root network and allocation of belowground carbon, in term of root exudates and root debris, have the potential to promote plant–microbial linkages with important implications for nutrient cycling and ecosystem functioning ( Wardle David et al., 2004 ; Hargreaves and Hofmockel, 2014 ; Audu et al., 2022b ). Indeed, the development of perennial root systems during the plant growth represents a continuous supply of C to soil that stimulates microbial biomass and activity and can shape microbial community composition over time ( Culman et al., 2010 ; Hargreaves et al., 2015 ; Rasche et al., 2017 ; Audu et al., 2022a ; Audu et al., 2022b ).…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, only few recent studies evaluated shifts of microbial communities under perennial grain crops cultivation ( Sprunger et al., 2019 ; Audu et al., 2022a ; Audu et al., 2022b ). The authors highlighted that perennial grain often need to be fully established (i.e., > 3 years) before changes in microbial community structure are detectable ( Sprunger et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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Perenniality, more than genotypes, shapes biological and chemical rhizosphere composition of perennial wheat lines

et al. 2023

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Perennial grains provide various ecosystem services compared to the annual counterparts thanks to their extensive root system and permanent soil cover. However, little is known about the evolution and diversification of perennial grains rhizosphere and its ecological functions over time. In this study, a suite of -OMICSs - metagenomics, enzymomics, metabolomics and lipidomics - was used to compare the rhizosphere environment of four perennial wheat lines at the first and fourth year of growth in comparison with an annual durum wheat cultivar and the parental species Thinopyrum intermedium. We hypothesized that wheat perenniality has a greater role in shaping the rhizobiome composition, biomass, diversity, and activity than plant genotypes because perenniality affects the quality and quantity of C input – mainly root exudates – hence modulating the plant-microbes crosstalk. In support of this hypothesis, the continuous supply of sugars in the rhizosphere along the years created a favorable environment for microbial growth which is reflected in a higher microbial biomass and enzymatic activity. Moreover, modification in the rhizosphere metabolome and lipidome over the years led to changes in the microbial community composition favoring the coexistence of more diverse microbial taxa, increasing plant tolerance to biotic and abiotic stresses. Despite the dominance of the perenniality effect, our data underlined that the OK72 line rhizobiome distinguished from the others by the increase in abundance of Pseudomonas spp., most of which are known as potential beneficial microorganisms, identifying this line as a suitable candidate for the study and selection of new perennial wheat lines.

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Changes in microbial biomass and activity support ecological intensification of marginal land through cultivation of perennial wheat in organic agriculture

Cited by 8 publications

References 72 publications

Adapting perennial grain and oilseed crops for climate resiliency

Adapting perennial grain and oilseed crops for climate resiliency

Climate change challenges, plant science solutions

Perenniality, more than genotypes, shapes biological and chemical rhizosphere composition of perennial wheat lines

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