Article
Agronomy
Lisa Petzoldt, Timo Kautz
Summary: The study compared the root distribution of spring oilseed rape and faba bean in different biopore types. The results showed that oilseed rape primarily grew within the biopores, while faba bean mainly grew in the bulk soil, with no significant differences in nitrogen content between the pore types.
Article
Soil Science
Katharina Stolze, Andrew D. Barnes, Nico Eisenhauer, Kai U. Totsche
Summary: This study investigates the linkage between earthworms, roots, and soil properties with the number of biopores. It reveals complex relationships among roots, earthworms, biopores, and soil properties, with land-use intensity playing a significant role. The occurrence, frequency, and persistence of biopores are found to be influenced by these interdependencies.
Article
Soil Science
Maxime Phalempin, Magdalena Landl, Gi-Mick Wu, Andrea Schnepf, Doris Vetterlein, Steffen Schlueter
Summary: Biopore recycling is the process in which roots enter existing pores instead of creating new ones. Roots cross the pores instead of colonizing them. The degree of biopore recycling is low, and there is a higher propensity for roots to enter pores when the angle of contact between roots and pores is less than 45 degrees and when the root diameter is approximately equal to or less than the pore diameter.
SOIL & TILLAGE RESEARCH
(2022)
Article
Environmental Sciences
Peng Xiong, Zhongbin Zhang, Yuekai Wang, Xinhua Peng
Summary: This study investigated the effects of biopores on the behavior and nitrogen uptake of maize roots in compacted soil. The results showed that the number of biopores colonized by roots was higher in compacted soil compared to noncompacted soil. However, the presence of 2 mm diameter biopores did not significantly improve maize growth and nitrogen uptake at the seedling stage.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Review
Biology
Udaya Kumar Vandana, Jina Rajkumari, L. Paikhomba Singha, Lakkakula Satish, Hemasundar Alavilli, Pamidimarri D. V. N. Sudheer, Sushma Chauhan, Rambabu Ratnala, Vanisri Satturu, Pranab Behari Mazumder, Piyush Pandey
Summary: Endophytic bacteria are plant-associated bacteria that promote plant growth by inhibiting plant pathogens and producing secondary metabolites. Understanding the diversity of endophytic microbial communities and their interactions with host plants is crucial for their successful application in agriculture.
Article
Soil Science
Mirjam Koch, Roberta Boselli, Mario Hasler, Christian Zorb, Miriam Athmann, Timo Kautz
Summary: The study demonstrated that high biopore abundancies have the potential to improve both belowground and aboveground biomass, with dry conditions leading to improved root exploration and hydration, and moist conditions resulting in enhanced plant growth and nutrient uptake. The availability of subsoil water and the influence of earthworms on soil nutrients play crucial roles in these processes.
BIOLOGY AND FERTILITY OF SOILS
(2021)
Article
Ecology
Mingsheng Qi, Jeffrey C. Berry, Kira W. Veley, Lily O'Connor, Omri M. Finkel, Isai Salas-Gonzalez, Molly Kuhs, Julietta Jupe, Emily Holcomb, Tijana Glavina del Rio, Cody Creech, Peng Liu, Susannah G. Tringe, Jeffery L. Dangl, Daniel P. Schachtman, Rebecca S. Bart
Summary: This study identified key root-associated microbial strains that significantly affect plant phenotypes under drought conditions in the staple cereal crop sorghum. The research found that certain Arthrobacter strains inhibit root growth, while Variovorax strains can protect plants from Arthrobacter-induced harm. The abundance of Arthrobacter was negatively correlated with plant growth in a field trial. By cross-referencing data from high-throughput phenotyping and field experiments, a list of bacteria positively associated with plant growth under drought stress was established.
Article
Agronomy
Lisa Petzoldt, Baerbel Kroschewski, Timo Kautz
Summary: The study conducted a pot experiment to investigate the metabolic activity of roots, indicated by pH change, in the presence of biopores in untilled soil layers. The results showed a trend of faster root growth and higher initial pH values in the biopore sheaths compared to bulk soil, suggesting that biopores not only serve as elongation paths for roots, but also provide a favorable environment for root activity in the subsoil.
Article
Plant Sciences
Selma Cadot, Valentin Gfeller, Lingfei Hu, Nikhil Singh, Andrea Sanchez-Vallet, Gaetan Glauser, Daniel Croll, Matthias Erb, Marcel G. A. van der Heijden, Klaus Schlaeppi
Summary: Plant-soil feedbacks mediated by benzoxazinoids (BXs) were found to affect maize growth and insect resistance conservatively in two arable soils, but not in a more fertile grassland soil, indicating a soil-type dependence. Wheat also responded to BX-feedbacks, showing a negative growth response conserved between cereals, while insect resistance exhibited opposite patterns. Cultivar-specificity of BX-feedbacks was a key finding, suggesting the potential to optimize crops to avoid negative plant-soil feedbacks in rotations.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Yongmei Zhou, Ziqin Pang, Zhaonian Yuan, Nyumah Fallah, Haifeng Jia, Ray Ming
Summary: Dioecious plants exhibit significant genetic variation, leading to differences in metabolic profiles and microbial communities in roots and rhizosphere soils. Understanding these differences can provide insights into underlying genomic and molecular mechanisms in plants.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Agronomy
Peng Xiong, Zhongbin Zhang, Xinhua Peng
Summary: This article reviews the effects of root-biopore interactions on soil structure, plant growth, and nutrient uptake. It introduces the concept of a biopore sheath to indicate the soil influenced by roots and resulting biopores. Biopores provide channels with low mechanical resistance for crop roots to access subsoil and improve water and nutrient absorption. However, the impact of biopores on crop growth depends on their size, and further research is needed.
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2022)
Article
Soil Science
Steven D. Mamet, Bobbi L. Helgason, Eric G. Lamb, Annaliza McGillivray, Kevin G. Stanley, Stephen J. Robinson, Syed Umair Aziz, Sally Vail, Steven D. Siciliano
Summary: The study found that Brassica napus is associated with multiple root bacterial communities that influence crop yield through different mechanisms. Therefore, the relationship between B. napus phenology and holobiont community assembly and function should be considered when selecting microbiome-associated traits for use in breeding programs.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Soil Science
Lioba Rueger, Kai Feng, Yan Chen, Ruibo Sun, Bo Sun, Ye Deng, Doris Vetterlein, Michael Bonkowski
Summary: Soil texture is critical to root growth and plays a significant role in the occurrence and distribution of soil microbiota. This study investigated the influence of soil texture on root morphology and the rhizosphere microbial composition of maize. The results showed a linear relationship between soil texture and root morphology, as well as a stronger selection effect of the rhizosphere in soils with a high sand fraction. This research highlights the importance of soil texture in shaping the rhizosphere microbiome of maize.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Review
Biotechnology & Applied Microbiology
Hugo A. Pantigoso, Derek Newberger, Jorge M. Vivanco
Summary: This paper summarizes the current research and perspectives on plant-microbial interactions for resource acquisition and discusses promising advances in manipulating rhizosphere microbiomes and root exudation.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Paulo J. P. L. Teixeira, Nicholas R. Colaianni, Theresa F. Law, Jonathan M. Conway, Sarah Gilbert, Haofan Li, Isai Salas-Gonzalez, Darshana Panda, Nicole M. Del Risco, Omri M. Finkel, Gabriel Castrillo, Piotr Mieczkowski, Corbin D. Jones, Jeffery L. Dangl
Summary: Plants have an innate immune system to fight off potential invaders based on the perception of microbial molecules. The root commensal bacteria can modulate a specific sector of the Arabidopsis immune system, highlighting the importance of extracellular strategies for pathogen suppression.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Jorg Prietzel, Jaane Krueger, Klaus Kaiser, Wulf Amelung, Sara L. Bauke, Michaela A. Dippold, Ellen Kandeler, Wantana Klysubun, Hans Lewandowski, Sebastian Loeppmann, Joerg Luster, Sven Marhan, Heike Puhlmann, Marius Schmitt, Maja B. Siegenthaler, Jan Siemens, Sandra Spielvogel, Sabine Willbold, Jan Wolff, Friederike Lang
Summary: Understanding ecosystem phosphorus (P) cycling is crucial for sustainable forest management. This study extends the assessment of P nutrition strategies to forest sites with carbonate bedrock, presenting comprehensive data on soil and bedrock chemistry. It introduces the concept of an Ecosystem P Nutrition Index (ENIp) for comparing P nutrition strategies among different forest sites.
Article
Microbiology
Barbara Fuentes, Alessandra Choque, Francisco Gomez, Jaime Alarcon, Eduardo Castro-Nallar, Franko Arenas, Daniel Contreras, Ramona Moerchen, Wulf Amelung, Claudia Knief, Ghazal Moradi, Erwin Klumpp, Claudia P. Saavedra, Joerg Prietzel, Wantana Klysubun, Francisco Remonsellez, Roland Bol
Summary: This study analyzed microbial communities in the hyperarid Yungay region of the Atacama Desert, down to a depth of 3.4m, and found that different depth intervals had specific physicochemical features and microbial composition. Moisture content, total carbon, pH, and electric conductivity were the most predictive factors for microbial richness and diversity.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Soil Science
Mitra Ghotbi, Ademir Durrer, Katharina Frindte, William R. Horwath, Jorge L. Mazza Rodrigues, Isaac Danso, Claudia Knief
Summary: This study focused on the comparative and interactive effects of topography and conventional versus conservation agriculture practices on soil physicochemical properties and microbiota. The results showed that topography had a profound influence on soil properties and microbial communities. Different tillage and crop rotation practices had different effects on prokaryotic community structure in different topographic conditions. Soil physicochemical properties, elevation, and spatial distance played important roles in shaping the microbial composition.
APPLIED SOIL ECOLOGY
(2022)
Article
Soil Science
Wulf Amelung, Nele Meyer, Andrey Rodionov, Claudia Knief, Michaela Aehnelt, Sara L. Bauke, Danh Biesgen, Stefan Dultz, Georg Guggenberger, Maguy Jaber, Erwin Klumpp, Ingrid Koegel-Knabner, Volker Nischwitz, Steffen A. Schweizer, Bei Wu, Kai U. Totsche, Eva Lehndorff
Summary: Microaggregates are important structural components of soils, but their formation processes and transformation over time are poorly understood. This study used isotope labelling to investigate the role of potential organic gluing agents and inorganic building units in soil aggregation processes. The results showed that the presence of plants facilitated the rapid formation of stable macroaggregates, while the decomposition of organic components and the contribution of secondary oxides and clay minerals increased over time.
Article
Soil Science
Katharina Frindte, Steffen Kolb, Michael Sommer, Juergen Augustin, Claudia Knief
Summary: In this study, soil cores were collected from kettle holes and adjacent farmland, and the impact of soil horizons on prokaryotic communities was investigated. The results showed that organic-rich horizons hosted prokaryotic communities with higher abundance and richness compared to mineral soil horizons.
APPLIED SOIL ECOLOGY
(2023)
Article
Soil Science
D. J. Burger, S. L. Bauke, W. Amelung, M. Sommer
Summary: Erosion of fertile topsoil leads to land degradation and yield loss, but a long-term field experiment in NE Germany shows that reformation of fertile topsoil and increase in crop yield is possible through good agricultural management within a few decades.
Article
Genetics & Heredity
Maximilian Fernando Becker, A. Michael Klueken, Claudia Knief
Summary: This study investigated the impact of foliar pathogen infections and the application of a plant health protecting product on the root-associated microbiota. It was found that both pathogen infections and the application of the plant health protecting product resulted in changes in the bacterial communities in the rhizosphere and endosphere. These findings suggest that above ground agronomic management practices have important implications for the root-associated microbiome.
ENVIRONMENTAL MICROBIOME
(2023)
Article
Agriculture, Multidisciplinary
Mitra Ghotbi, Ruhollah Taghizadeh-Claudia Knief Mehrjardi, Claudia Knief, Marjan Ghotbi, Angela D. Kent, William R. Horwath
Summary: Farming on hillslopes affects soil organic matter accumulation and loss, depending on slope position and cropping patterns. In this study, erosion and agronomic practices' impacts on soil organic matter translocation and transformation were examined. The spatial distribution of 813C, 815N, and SOM turnover indices were mapped to trace erosion and degradation of SOM in the field.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Soil Science
Dymphie J. Burger, Florian Schneider, Sara L. Bauke, Timo Kautz, Axel Don, Wulf Amelung
Summary: Deep ploughing has long-lasting effects on soil properties and crop yields, with increased subsoil carbon and phosphorus stocks, and varying impacts on root biomass.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2023)
Review
Agronomy
Wulf Amelung, Ni Tang, Nina Siebers, Michaela Aehnelt, Karin Eusterhues, Vincent J. M. N. L. Felde, Georg Guggenberger, Klaus Kaiser, Ingrid Koegel-Knabner, Erwin Klumpp, Claudia Knief, Jens Kruse, Eva Lehndorff, Robert Mikutta, Stephan Peth, Nadja Ray, Alexander Prechtel, Thomas Ritschel, Steffen A. Schweizer, Susanne K. Woche, Bei Wu, Kai U. Totsche
Summary: The functions of soils are closely related to their pore space and biogeochemical interfaces. The study of soil microaggregates can provide insights into their structure and functions. Advanced techniques allow us to assess the size, composition, and porosity of microaggregates and explore their role in element cycling. However, these techniques have specific requirements and limitations in sample preparation and analysis.
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2023)
Article
Soil Science
Sara L. Bauke, Sabine J. Seidel, Miriam Athmann, Anne E. Berns, Melanie Braun, Martina I. Gocke, Julien Guigue, Timo Kautz, Ingrid Koegel-Knabner, Juliette Ohan, Matthias Rillig, Michael Schloter, Oliver Schmittmann, Stefanie Schulz, David Uhlig, Andrea Schnepf, Wulf Amelung
Summary: Agricultural production in Central Europe is increasingly affected by extreme drought events. This study found that incorporating organic matter, especially biowaste compost, into the subsoil significantly increased root growth and subsequently improved crop nutrient uptake, biomass, and grain yield. The incorporation of green waste compost had less pronounced effects.
SOIL & TILLAGE RESEARCH
(2024)
Article
Microbiology
Anna Hakobyan, Stefanie Velte, Wiebke Sickel, Dietmar Quandt, Alexandra Stoll, Claudia Knief
Summary: This study found that Tillandsia landbeckii plants in hyperarid deserts host specific bacterial communities, providing another refuge for microbial life.
Review
Environmental Sciences
Harry Vereecken, Wulf Amelung, Sara L. Bauke, Heye Bogena, Nicolas Brueggemann, Carsten Montzka, Jan Vanderborght, Michel Bechtold, Gunter Bloeschl, Andrea Carminati, Mathieu Javaux, Alexandra G. Konings, Jurgen Kusche, Insa Neuweiler, Dani Or, Susan Steele-Dunne, Anne Verhoef, Michael Young, Yonggen Zhang
Summary: This review explores the characteristics, drivers, and relationships of soil hydrological processes (SHP) at different scales. It also discusses the advancements in soil hydrology prediction through emerging technologies and their role in addressing global change.
NATURE REVIEWS EARTH & ENVIRONMENT
(2022)