Time-resolution of the shoot and root growth of the model cereal Brachypodium in response to inoculation with Azospirillum bacteria at low phosphorus and temperature
Martino Schillaci, Borjana Arsova, Robert Walker, Penelope MC Smith, Kerstin A Nagel, Ute Roessner, Michelle Watt
Plant Growth Regulation: an international journal on plant growth and development | Springer Verlag | Published : 2021
A non-invasive plant phenotyping platform, GrowScreen-PaGe, was used to resolve the dynamics of shoot and root growth of the model cereal Brachypodium (Brachypodium distachyon Bd21-3) in response to the plant growth promoting (PGP) bacteria Azospirillum (Azospirillum brasilense Sp245). Inoculated Brachypodium plants had greater early vigor and higher P use efficiency than non-inoculated Brachypodium at low P and low temperature conditions. Root systems were imaged non-invasively at eight time points and data combined with leaf area, shoot biomass and nutrient content from destructive subsamples at 7, 14 and 21 days after inoculation (DAI). Azospirillum colonisation of roots improved Brachypo..View full abstract
Martino Schillaci is grateful for financial support from a University of Melbourne Research Scholarship provided through the Juelich Melbourne Postgraduate Academy (JUMPA). Michelle Watt holds the Adrienne Clarke Chair of Botany which is supported through the University of Melbourne Botany Foundation. Kerstin Nagel and Borjana Arsova acknowledge the Helmholtz Association of German Research Centres.