Nitrate induction and physiological responses of two maize lines differing in nitrogen use efficiency: effects on N availability, microbial diversity and enzyme activity in the rhizosphere
MetadataShow full item record
The rate of nitrate (NO3 (-)) uptake and changes in rhizosphere properties were studied growing seedlings of two maize inbred lines differing in nitrogen use efficiency (NUE) in rhizoboxes.Changes in NO3 (-) uptake rates occurred in response to anion addition (induction) in seedlings grown both in hydroponic culture and in soil in rhizoboxes. The characterization of root exudate composition showed a line-specific metabolite profile, which was also affected by NO3 (-) availability. The induction affected respiration, nitrification, ammonification and enzyme activities of the rhizosphere. Furthermore, the composition of rhizosphere bacterial communities of the two maize lines differed suggesting the selective capacity of plants.Overall, results showed a strong and fast modification of rhizospheric soil properties in response to physiological changes in plants caused by fluctuating NO3 (-) availability.
Showing items related by title, author, creator and subject.
Chesani, F; Lamma, E; Mello, P; Montali, M; Riguzzi, F; Storari, S (Springer, 2009)In the last few years, there has been a growing interest in the adoption of declarative paradigms for modeling and verifying process models. These paradigms provide an abstract and human understandable way of specifying ...
Nitrate induction triggers different transcriptional changes in a high and a low nitrogen use efficiency maize inbred line Zamboni, A; Astolfi, S; Zuchi, S; Pii, Y; Guardini, K; Tononi, P; Varanini, Z (2014)In higher plants, NO3 (-) can induce its own uptake and the magnitude of this induction is positively related to the external anion concentration. This phenomenon has been characterized both in herbaceous and woody plants. ...
Alberti L; Bianchi N; Boglieti A; Cavagnino A (2014)Starting from 2011, in order to reduce electricity consumption and carbon dioxide emissions, the European Minimum Energy Performance Standard will impose minimum efficiency values for electric motors introduced into the ...