Characterization of sugarcane (Saccharum spp.) leaf senescence: implications for biofuel production
| العنوان: | Characterization of sugarcane (Saccharum spp.) leaf senescence: implications for biofuel production |
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| المؤلفون: | Felipe Vinecky, Adilson Kenji Kobayashi, Nelson Geraldo de Oliveira, Patrícia Abrão de Oliveira, Amanda P. De Souza, Bruna C Arenque-Musa, Marcos Silveira Buckeridge, Marcos Fernando Basso, Betania Ferraz Quirino, Hugo Bruno Correa Molinari, Polyana Kelly Martins, Maria Thereza Bazzo Martins, Bárbara Andrade Dias Brito da Cunha, Wagner Rodrigo de Souza |
| المصدر: | Biotechnology for Biofuels Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| بيانات النشر: | BioMed Central, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Renewable energy, Management, Monitoring, Policy and Law, Biology, Photosynthesis, 01 natural sciences, Applied Microbiology and Biotechnology, Crop, Saccharum, 03 medical and health sciences, Nutrient, Ethanol fuel, Cultivar, Renewable Energy, Sustainability and the Environment, Research, Cell wall, fungi, food and beverages, Sugarcane, Nutrient remobilization, biology.organism_classification, Natural leaf senescence, 030104 developmental biology, General Energy, Agronomy, Biofuel, Lignocellulosic ethanol, BIOTECNOLOGIA DE PLANTAS, Bagasse, 010606 plant biology & botany, Biotechnology |
| الوصف: | Background Second-generation ethanol (2G-bioethanol) uses lignocellulosic feedstocks for ethanol production. Sugarcane is one among the most suitable crops for biofuel production. Its juice is extracted for sugar production, while sugarcane bagasse, straw, and senescing leaves are considered industrial waste. Senescence is the age-dependent deterioration of plant cells, ultimately leading to cell death and completion of the plant life cycle. Because senescing leaves may also be used for biofuel production, understanding the process of natural senescence, including remobilization of nutrients and its effect on cell walls can provide useful information for 2G-bioethanol production from sugarcane leaves. Results The natural senescence process in leaves of the commercial sugarcane cultivar RB867515 was investigated. Senescence was characterized by strong reduction in photosynthetic pigments content, remobilization of the nutrients N, P, K, B, Cu, Fe, and Zn, and accumulation of Ca, S, Mg, B, Mn, and Al. No significant changes in the cell-wall composition occurred, and only small changes in the expression of cell wall-related genes were observed, suggesting that cell walls are preserved during senescence. Senescence-marker genes, such as SAG12-like and XET-like genes, were also identified in sugarcane and found to be highly expressed. Conclusions Our study on nutrient remobilization under senescence in a vigorous sugarcane cultivar can contribute to the understanding on how nutrient balance in a high-yielding crop is achieved. In general, neutral monosaccharide profile did not change significantly with leaf senescence, suggesting that senescing leaves of sugarcane can be as a feedstock for biofuel production using pretreatments established for non-senescing leaves without additional efforts. Based on our findings, the potential biotechnological applications for the improvement of sugarcane cultivars are discussed. Electronic supplementary material The online version of this article (doi:10.1186/s13068-016-0568-0) contains supplementary material, which is available to authorized users. |
| اللغة: | English |
| تدمد: | 1754-6834 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f12ae3936d4938143f56a7a54ea869e7Test http://europepmc.org/articles/PMC4957918Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f12ae3936d4938143f56a7a54ea869e7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17546834 |
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