Phosphorus acquisition efficiency in arbuscular mycorrhizal maize is correlated with the abundance of root-external hyphae and the accumulation of transcripts encoding PHT1 phosphate transporters.
Ruairidh J. H. Sawers,Ruairidh J. H. Sawers,Simon F. Svane,Simon F. Svane,Clement Quan,Mette Grønlund,Mette Grønlund,Barbara Wozniak,Mesfin Nigussie Gebreselassie,Eliécer González-Muñoz,Ricardo A. Chávez Montes,Ivan Baxter,Jérôme Goudet,Iver Jakobsen,Iver Jakobsen,Uta Paszkowski,Uta Paszkowski +16 more
TLDR
The data indicate that host genetic factors influence fungal growth strategy with an impact on plant performance, and host genotype influence on host capacity to profit from the symbiosis.Abstract:
Summary
Plant interactions with arbuscular mycorrhizal fungi have long attracted interest for their potential to promote more efficient use of mineral resources in agriculture. Their use, however, remains limited by a lack of understanding of the processes that determine the outcome of the symbiosis. In this study, the impact of host genotype on growth response to mycorrhizal inoculation was investigated in a panel of diverse maize lines.
A panel of 30 maize lines was evaluated with and without inoculation with arbuscular mycorrhizal fungi. The line Oh43 was identified to show superior response and, along with five other reference lines, was characterized in greater detail in a split-compartment system, using 33P to quantify mycorrhizal phosphorus uptake.
Changes in relative growth indicated variation in host capacity to profit from the symbiosis. Shoot phosphate content, abundance of root-internal and -external fungal structures, mycorrhizal phosphorus uptake, and accumulation of transcripts encoding plant PHT1 family phosphate transporters varied among lines.
Superior response in Oh43 is correlated with extensive development of root-external hyphae, accumulation of specific Pht1 transcripts and high phosphorus uptake by mycorrhizal plants. The data indicate that host genetic factors influence fungal growth strategy with an impact on plant performance.read more
Citations
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Root phenotypes for improved nutrient capture: an underexploited opportunity for global agriculture.
TL;DR: Although the current understanding is sufficient to deploy root phenotypes for improved nutrient capture in crop breeding, this complex topic does not receive the resources it merits in either applied or basic plant biology.
Journal ArticleDOI
Soil Microbial Resources for Improving Fertilizers Efficiency in an Integrated Plant Nutrient Management System
TL;DR: The importance of NF bacteria and P solubilizing/mobilizing microbes as well as their interactions with mineral P fertilization in improving crop productivity and fertilizers efficiency and positive consequences on plant mineral uptake, crop productivity, and resiliency to environmental constraints are reported.
Journal ArticleDOI
Lipid transfer from plants to arbuscular mycorrhiza fungi
Andreas Keymer,Priya Pimprikar,Vera Wewer,Claudia Huber,Mathias Brands,Simone L Bucerius,Pierre-Marc Delaux,Verena Klingl,Edda von Roepenack-Lahaye,Trevor L. Wang,Wolfgang Eisenreich,Peter Dörmann,Martin Parniske,Caroline Gutjahr +13 more
TL;DR: Using isotopolog profiling, it is demonstrated that 13C patterns of fungal FAs recapitulate those of wild-type hosts, indicating cross-kingdom lipid transfer from plants to fungi.
Journal ArticleDOI
Little evidence that farmers should consider abundance or diversity of arbuscular mycorrhizal fungi when managing crops.
Megan H. Ryan,James H. Graham +1 more
TL;DR: Management of AMF by farmers will not be warranted until benefits are demonstrated at the field scale under prescribed agronomic management, and interactions between AMF and soil microbes are complex and poorly understood.
Journal ArticleDOI
Small molecules below-ground: the role of specialized metabolites in the rhizosphere
TL;DR: Key classes of specialized metabolites that occur as mostly non-volatile compounds in root exudates or are emitted as volatile organic compounds (VOCs) are reviewed.
References
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