Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis
Article
Article Title | Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis |
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ERA Journal ID | 201487 |
Article Category | Article |
Authors | Lonhienne, Thierry G. A. (Author), Trusov, Yuri (Author), Young, Anthony (Author), Rentsch, Doris (Author), Nasholm, Torgny (Author), Schmidt, Susanne (Author) and Paungfoo-Lonhienne, Chanyarat (Author) |
Journal Title | Scientific Reports |
Journal Citation | 4, pp. 1-8 |
Article Number | 5055 |
Number of Pages | 8 |
Year | 2014 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2045-2322 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/srep05055 |
Web Address (URL) | http://www.nature.com/articles/srep05055 |
Abstract | Growth, morphogenesis and function of roots are influenced by the concentration and form of nutrients present in soils, including low molecular mass inorganic N(IN, ammonium, nitrate) and organic N (ON, e.g.amino acids). Proteins, ON of high molecular mass, are prevalent in soils but their possible effects on roots have received little attention. Here, we investigated how externally supplied protein of a size typical of soluble soil proteins influences root development of axenically grown Arabidopsis. Addition of low to intermediate concentrations of protein (bovine serum albumen, BSA) to IN-replete growth medium increased root dry weight, root length and thickness, and root hair length. Supply of higher BSA concentrations inhibited root development. These effects were independent of total N concentrations in the growth medium. The possible involvement of phytohormones was investigated using Arabidopsis with defective auxin (tir1-1 and axr2-1) and ethylene (ein2-1) responses. That no phenotype was observed suggests a signalling pathway is operating independent of auxin and ethylene responses. This study expands the knowledge on N form-explicit responses to demonstrate that ON of high molecular mass elicits specific responses. |
Keywords | Arabidopsis; root morphology; biomass allocation; protein |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Byline Affiliations | University of Queensland |
Department of Agriculture and Fisheries, Queensland | |
University of Bern, Switzerland | |
Swedish University of Agricultural Sciences, Sweden | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3w8v/effects-of-externally-supplied-protein-on-root-morphology-and-biomass-allocation-in-arabidopsis
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