8 results on '"Rindisbacher, Abiel"'
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2. Plant soil feedback strength in relation to large-scale plant rarity and phylogenetic relatedness
- Author
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Kempel, Anne, Rindisbacher, Abiel, Fischer, Markus, and Allan, Eric
- Published
- 2018
3. Technology generation to dissemination: lessons learned from the tef improvement project
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Cannarozzi, Gina, Chanyalew, Solomon, Assefa, Kebebew, Bekele, Abate, Blösch, Regula, Weichert, Annett, Klauser, Dominik, Plaza-Wüthrich, Sonia, Esfeld, Korinna, Jöst, Moritz, Rindisbacher, Abiel, Jifar, Habte, Johnson-Chadwick, Victoria, Abate, Ermias, Wang, Wuyan, Kamies, Rizqah, Husein, Negussu, Kebede, Worku, Tolosa, Kidist, Genet, Yazachew, Gebremeskel, Kidu, Ferede, Brikti, Mekbib, Firew, Martinelli, Federico, Pedersen, Hans Christian, Rafudeen, Suhail, Hussein, Shimelis, Tamiru, Muluneh, Nakayama, Naomi, Robinson, Mike, Barker, Ian, Zeeman, Samuel, and Tadele, Zerihun
- Published
- 2018
- Full Text
- View/download PDF
4. IDENTIFICATION OF DROUGHT TOLERANT MUTANT LINES OF TEF [ERAGROSTIS TEF (ZUCC.) TROTTER].
- Author
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Blösch, Regula, Rindisbacher, Abiel, Plaza-Wüthrich, Sonia, Röckel, Nora, Weichert, Annett, Cannarozzi, Gina, and Tadele, Zerihun
- Subjects
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TEFF , *FOOD security , *AGRICULTURAL productivity - Abstract
Introduction: Tef [Eragrostis tef (Zucc.) Trotter] is the major food crop in Ethiopia where it is annually cultivated on about 30% of the total area allocated to cereals. The productivity of tef is, however, significantly reduced by drought which can occur at either the early or the late developmental stage of the crop. Methodology: A total of 10,000 EMS (ethyl methane sulfonate) mutagenized M2 tef populations were screened first for early and second for terminal drought tolerance. The performance of candidate lines was investigated using diverse agronomical and physiological parameters. Results and discussion: Several promising lines were obtained for both early and terminal drought tolerance. Among these, genotypes with outstanding performance were found for two drought tolerant tef lines targeting early drought tolerance (dtt2 and dtt13) and three terminal drought tolerant lines targeting terminal drought tolerance (tdt9, tdt15 and tdt19). Conclusions: Candidate lines for both early and terminal drought tolerance will play vital roles in developing drought tolerance in tef improvement. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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5. Gibberellin Deficiency Confers Both Lodging and Drought Tolerance in Small Cereals.
- Author
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Plaza-Wüthrich, Sonia, Blösch, Regula, Rindisbacher, Abiel, Cannarozzi, Gina, Tadele, Zerihun, Hao Peng, and Hasanuzzaman, Mirza
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EFFECT of gibberellins on plants ,LODGING of crops ,CROPS ,DROUGHT tolerance - Abstract
Tef [Eragrostis tef (Zucc.) Trotter] and finger millet [Eleusine coracana Gaertn] are staple cereal crops in Africa and Asia with several desirable agronomic and nutritional properties. Tef is becoming a life-style crop as it is gluten-free while finger millet has a low glycemic index which makes it an ideal food for diabetic patients. However, both tef and finger millet have extremely low grain yields mainly due to moisture scarcity and susceptibility of the plants to lodging. In this study, the effects of gibberellic acid (GA) inhibitors particularly paclobutrazol (PBZ) on diverse physiological and yield-related parameters were investigated and compared to GA mutants in rice (Oryza sativa L.). The application of PBZ to tef and finger millet significantly reduced the plant height and increased lodging tolerance. Remarkably, PBZ also enhanced the tolerance of both tef and finger millet to moisture deficit. Under moisture scarcity, tef plants treated with PBZ did not exhibit drought-related symptoms and their stomatal conductance was unaltered, leading to higher shoot biomass and grain yield. Semi-dwarf rice mutants altered in GA biosynthesis, were also shown to have improved tolerance to dehydration. The combination of traits (drought tolerance, lodging tolerance and increased yield) that we found in plants with altered GA pathway is of importance to breeders who would otherwise rely on extensive crossing to introgress each trait individually. The key role played by PBZ in the tolerance to both lodging and drought calls for further studies using mutants in the GA biosynthesis pathway in order to obtain candidate lines which can be incorporated into crop-breeding programs to create lodging tolerant and climate-smart crops. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
6. Genetic diversity in tef [Eragrostis tef (Zucc.) Trotter].
- Author
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Assefa, Kebebew, Cannarozzi, Gina, Girma, Dejene, Kamies, Rizqah, Chanyalew, Solomon, Plaza-Wüthrich, Sonia, Blösch, Regula, Rindisbacher, Abiel, Rafudeen, Suhail, and Tadele, Zerihun
- Subjects
LOVE grass ,ALTERNATIVE grains ,GENETIC research ,PLANT genetics ,VEGETATION & climate ,PLANT chromosomes - Abstract
Tef [Eragrostis tef (Zucc.) Trotter] is a cereal crop resilient to adverse climatic and soil conditions, and possessing desirable storage properties. Although tef provides high quality food and grows under marginal conditions unsuitable for other cereals, it is considered to be an orphan crop because it has benefited little from genetic improvement. Hence, unlike other cereals such as maize and wheat, the productivity of tef is extremely low. In spite of the low productivity, tef is widely cultivated by over six million small-scale farmers in Ethiopia where it is annually grown on more than three million hectares of land, accounting for over 30% of the total cereal acreage. Tef, a tetraploid with 40 chromosomes (2n = 4x = 40), belongs to the family Poaceae and, together with finger millet (Eleusine coracana Gaerth.), to the subfamily Chloridoideae. It was originated and domesticated in Ethiopia. There are about 350 Eragrostis species of which E. tef is the only species cultivated for human consumption. At the present time, the gene bank in Ethiopia holds over five thousand tef accessions collected from geographical regions diverse in terms of climate and elevation. These germplasm accessions appear to have huge variability with regard to key agronomic and nutritional traits. In order to properly utilize the variability in developing new tef cultivars, various techniques have been implemented to catalog the extent and unravel the patterns of genetic diversity. In this review, we show some recent initiatives investigating the diversity of tef using genomics, transcriptomics and proteomics and discuss the prospect of these efforts in providing molecular resources that can aid modern tef breeding [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
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7. The results of biodiversity–ecosystem functioning experiments are realistic
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Jochum, Malte, Fischer, Markus, Isbell, Forest, Roscher, Christiane, Van Der Plas, Fons, Boch, Steffen, Boenisch, Gerhard, Buchmann, Nina, Catford, Jane A., Cavender-Bares, Jeannine, Ebeling, Anne, Eisenhauer, Nico, Gleixner, Gerd, Hölzel, Norbert, Kattge, Jens, Klaus, Valentin H., Kleinebecker, Till, Lange, Markus, Le Provost, Gaëtane, Meyer, Sebastian T., Molina-Venegas, Rafael, Mommer, Liesje, Oelmann, Yvonne, Penone, Caterina, Prati, Daniel, Reich, Peter B., Rindisbacher, Abiel, Schäfer, Deborah, Scheu, Stefan, Schmid, Bernhard, Tilman, David, Tscharntke, Teja, Vogel, Anja, Wagg, Cameron, Weigelt, Alexandra, Weisser, Wolfgang W., Wilcke, Wolfgang, and Manning, Peter
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15. Life on land ,580 Plants (Botany) - Abstract
A large body of research shows that biodiversity loss can reduce ecosystem functioning. However, much of the evidence for this relationship is drawn from biodiversity–ecosystem functioning experiments in which biodiversity loss is simulated by randomly assembling communities of varying species diversity, and ecosystem functions are measured. This random assembly has led some ecologists to question the relevance of biodiversity experiments to real-world ecosystems, where community assembly or disassembly may be non-random and influenced by external drivers, such as climate, soil conditions or land use. Here, we compare data from real-world grassland plant communities with data from two of the largest and longest-running grassland biodiversity experiments (the Jena Experiment in Germany and BioDIV in the United States) in terms of their taxonomic, functional and phylogenetic diversity and functional-trait composition. We found that plant communities of biodiversity experiments cover almost all of the multivariate variation of the real-world communities, while also containing community types that are not currently observed in the real world. Moreover, they have greater variance in their compositional features than their real-world counterparts. We then re-analysed a subset of experimental data that included only ecologically realistic communities (that is, those comparable to real-world communities). For 10 out of 12 biodiversity–ecosystem functioning relationships, biodiversity effects did not differ significantly between the full dataset of biodiversity experiments and the ecologically realistic subset of experimental communities. Although we do not provide direct evidence for strong or consistent biodiversity–ecosystem functioning relationships in real-world communities, our results demonstrate that the results of biodiversity experiments are largely insensitive to the exclusion of unrealistic communities and that the conclusions drawn from biodiversity experiments are generally robust.
8. The results of biodiversity-ecosystem functioning experiments are realistic
- Author
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Jochum, Malte, Fischer, Markus, Isbell, Forest, Roscher, Christiane, Van Der Plas, Fons, Boch, Steffen, Boenisch, Gerhard, Buchmann, Nina, Catford, Jane A., Cavender-Bares, Jeannine, Ebeling, Anne, Eisenhauer, Nico, Gleixner, Gerd, Hölzel, Norbert, Kattge, Jens, Klaus, Valentin H., Kleinebecker, Till, Lange, Markus, Le Provost, Gaëtane, Meyer, Sebastian T., Molina Venegas, Rafael, Mommer, Liesje, Oelmann, Yvonne, Penone, Caterina, Prati, Daniel, Reich, Peter B., Rindisbacher, Abiel, Schäfer, Deborah, Scheu, Stefan, Schmid, Bernhard, Tilman, David, Tscharntke, Teja, Vogel, Anja, Cameron, Wagg, Alexandra, Weigelt, Weisser, Wolfgang W., Wilcke, Wolfgang, and Manning, Peter
- Subjects
15. Life on land ,580 Plants (Botany) - Abstract
A large body of research shows that biodiversity loss can reduce ecosystem functioning, thus providing support for the conservation of biological diversity1–4. Much of the evidence for this relationship is drawn from biodiversity-ecosystem functioning experiments (hereafter: biodiversity experiments), in which biodiversity loss is simulated by randomly assembling communities of varying species diversity, and ecosystem functions are measured5–9. This random assembly has led some ecologists to question the relevance of biodiversity experiments to real-world ecosystems, where community assembly may often be non-random and influenced by external drivers, such as climate or land-use intensification10–18. Despite these repeated criticisms, there has been no comprehensive, quantitative assessment of how experimental and real-world plant communities really differ, and whether these differences invalidate the experimental results. Here, we compare data from two of the largest and longest-running grassland biodiversity experiments globally (Jena Experiment, Germany; BioDIV, USA) to related real-world grassland plant communities in terms of their taxonomic, functional, and phylogenetic diversity and functional-trait composition. We found that plant communities of biodiversity experiments have greater variance in these compositional features than their real-world counterparts, covering almost all of the variation of the real-world communities (82-96%) while also containing community types that are not currently observed in the real world. We then re-analysed a subset of experimental data that included only ecologically-realistic communities, i.e. those comparable to real-world communities. For ten out of twelve biodiversity-ecosystem functioning relationships, biodiversity effects did not differ significantly between the full dataset of biodiversity experiments and the ecologically-realistic subset of experimental communities. This demonstrates that the results of biodiversity experiments are largely insensitive to the inclusion/exclusion of unrealistic communities. By bridging the gap between experimental and real-world studies, these results demonstrate the validity of inferences from biodiversity experiments, a key step in translating their results into specific recommendations for real-world biodiversity management.
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