Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis

Lonhienne, Thierry G. A., Trusov, Yuri, Young, Anthony, Rentsch, Doris, Näsholm, Torgny, Schmidt, Susanne and Paungfoo-Lonhienne, Chanyarat (2014) Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis. Scientific Reports, 4 5055: 1-8. doi:10.1038/srep05055

Author Lonhienne, Thierry G. A.
Trusov, Yuri
Young, Anthony
Rentsch, Doris
Näsholm, Torgny
Schmidt, Susanne
Paungfoo-Lonhienne, Chanyarat
Title Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2014-05-23
Sub-type Article (original research)
DOI 10.1038/srep05055
Open Access Status DOI
Volume 4
Issue 5055
Start page 1
End page 8
Total pages 8
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Formatted 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.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2015 Collection
School of Chemistry and Molecular Biosciences
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 5 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 06 Jun 2014, 19:45:54 EST by Mrs Louise Nimwegen on behalf of School of Agriculture and Food Sciences