| 001 | 866579 | ||
| 005 | 20210130003529.0 | ||
| 037 | _ | _ | |a FZJ-2019-05662 |
| 041 | _ | _ | |a English |
| 100 | 1 | _ | |a Arsova, Borjana |0 P:(DE-Juel1)165155 |b 0 |e Corresponding author |u fzj |
| 111 | 2 | _ | |a Microbe-assisted crop production – opportunities, challenges and needs |g miCROPe 2019 |c Vienna |d 2019-12-02 - 2019-12-05 |w Austria |
| 245 | _ | _ | |a The impact of beneficial microbes on Brachypodium nutrient uptake under limiting supplies of nitrogen and phosphorus, monitored with non-invasive phenotyping and molecular approaches |
| 260 | _ | _ | |c 2019 |
| 336 | 7 | _ | |a Conference Paper |0 33 |2 EndNote |
| 336 | 7 | _ | |a Other |2 DataCite |
| 336 | 7 | _ | |a INPROCEEDINGS |2 BibTeX |
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| 520 | _ | _ | |a In times of increasing global population and decreasing arable land per capita, the understanding of plant nutrient uptake and novel strategies to improve nutrient uptake are of utmost importance. Our work focuses on nitrogen (N) – the second most abundant nutrient in plants and phosphorus (P) – a finite global resource. We present studies where use of plant growth promoting rhizobacteria (PGPR) resulted in improved plant performance under limited N or P in Brachypodium- a model plant for cereals. Plant roots were analyzed with the non-invasive root phenotyping platform GrowScreen Page [1], or with the 3D printed EcoFab microcosms [2]. The latter was adapted and used in combination with Plant Screen Mobile [3], for non-invasive shoot area estimation, in conjunction with root scanning, over time.In the case of P limitation, plant biomass was higher in plants inoculated with a PGPR. A time series image-analysis of root phenotype allowed visualization of increased root length and changes in root architecture, pin-pointing the time-window when growth promotion took effect after inoculation. A sand experiment similarly resulted in increased biomass in inoculated plants. Study of the molecular mechanisms behind this whole plant, dynamic phenotype is ongoing and involves metabolomics and lipidomics.In the case where plants with limiting N supply were inoculated with N-fixing PGPR, an end-point harvest showed that ratio of lateral to primary root length increases. More importantly, N concentration in root and shoot tissue increased, along with greater shoot biomass and leaf area. We complemented this destructive harvest with proteomics to investigate the systemic response of Brachypodium constitutively grown under limiting N, to the interaction with the PGPR. Data analysis revealed that these N-fixing bacteria impact central nitrogen metabolism in Brachypodium, and indicate a mode of action that upregulates specific N transporters on the root plasma membrane.The grass model can thus clearly benefit from PGPR, however the time points, tissue responses and molecular mechanisms were different for organisms and nutrient conditions. Efforts are needed to elucidate plant responses to the microorganisms, addressing molecular and tissue architecture, while taking in context plant developmental stage [4] and time since application. 1. Funct Plant Biol, 2017. 44(1)2. New Phytol. 2019; 222(2): 1149–1160 3. Plant Methods 2019 15:2 4. New Phytol. 2019 doi: 10.1111/nph.15955 |
| 536 | _ | _ | |a 582 - Plant Science (POF3-582) |0 G:(DE-HGF)POF3-582 |c POF3-582 |f POF III |x 0 |
| 700 | 1 | _ | |a Sanow, Stefan |0 P:(DE-Juel1)178056 |b 1 |u fzj |
| 700 | 1 | _ | |a Schillaci, Martino |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a kuang, weiqi |0 P:(DE-Juel1)174213 |b 3 |u fzj |
| 700 | 1 | _ | |a Huesgen, Pitter |0 P:(DE-Juel1)162356 |b 4 |u fzj |
| 700 | 1 | _ | |a Roessner, Ute |0 P:(DE-HGF)0 |b 5 |
| 700 | 1 | _ | |a Watt, Michelle |0 P:(DE-Juel1)166460 |b 6 |u fzj |
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| 914 | 1 | _ | |y 2019 |
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