Journal Article

FZJ-2022-01026

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Root Growth and Architecture of Wheat and Brachypodium Vary in Response to Algal Fertilizer in Soil and Solution

Mau, L. (First author)FZJ* ; Junker, S.FZJ* ; Bochmann, H.FZJ* ; Mihiret, Y. E. ; Kelm, J. M.FZJ* ; Schrey, S. D.FZJ* ; Roessner, U. ; Schaaf, G. ; Watt, M. ; Kant, J. (Corresponding author)FZJ* ; Arsova, B. (Last author)FZJ*

2022
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Please use a persistent id in citations: http://hdl.handle.net/2128/30586  doi:10.3390/agronomy12020285

Abstract: Alternative, recycled sources for mined phosphorus (P) fertilizers are needed to sustain future crop growth. Quantification of phenotypic adaptations and performance of plants with a recycled nutrient source is required to identify breeding targets and agronomy practices for new fertilization strategies. In this study, we tested the phenotypic responses of wheat (Triticum aestivum) and its genetic model, Brachypodium (Brachypodium distachyon), to dried algal biomass (with algae or high or low mineral P) under three growing conditions (fabricated ecosystems (EcoFABs), hydroponics, and sand). For both species, algal-grown plants had similar shoot biomass to mineral-grown plants, taking up more P than the low mineral P plants. Root phenotypes however were strongly influenced by nutrient form, especially in soilless conditions. Algae promoted the development of shorter and thicker roots, notably first and second order lateral roots. Root hairs were 21% shorter in Brachypodium, but 24% longer in wheat with algae compared to mineral high P. Our results are encouraging to new recycled fertilization strategies, showing algae is a nutrient source to wheat and Brachypodium. Variation in root phenotypes showed algal biomass is sensed by roots and is taken up at a higher amount per root length than mineral P. These phenotypes can be selected and further adapted in phenotype-based breeding for future renewal agriculture systems.

Note: DFG

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Contributing Institute(s):

1. Pflanzenwissenschaften (IBG-2)

Research Program(s):

1. 2171 - Biological and environmental resources for sustainable use (POF4-217) (POF4-217)
2. DFG Grant for all Projects for 2022 (DFG-ALL-2022) (DFG-ALL-2022)

Appears in the scientific report 2022

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