Energy use efficiency is characterized by an epigenetic component that can be directed through artificial selection to increase yield
| Autor: | Katrien Van Der Kelen, Bart Lambert, Benjamin Laga, Boris Haesendonckx, Evi Standaert, Frank Van Breusegem, Hervé Akpo, Abdelkrim Azmi, Marc Bots, Yves Guisez, Miriam Hauben, Marc De Block |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
food.ingredient
Heterosis Population Cell Respiration Ascorbic Acid Biology MITOCHONDRIAL COMPLEX-I Epigenesis Genetic Histones food Gene Expression Regulation Plant Hybrid Vigor TRIBOLIUM-CASTANEUM PLANTS Selection Genetic education Canola Epigenomics Hybrid LOLIUM-PERENNE education.field_of_study Multidisciplinary business.industry MATURE LEAVES Crop yield Brassica napus Biology and Life Sciences food and beverages Heritability Biological Sciences DNA Methylation Ascorbic acid ARABIDOPSIS Biotechnology DARK RESPIRATION RATE NICOTIANA-SYLVESTRIS PUPA WEIGHT Agronomy Human medicine business Energy Metabolism |
| Zdroj: | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Proceedings of the National Academy of Sciences of the United States of America |
| ISSN: | 0027-8424 |
| Popis: | Quantitative traits, such as size and weight in animals and seed yield in plants, are distributed normally, even within a population of genetically identical individuals. For example, in plants, various factors, such as local soil quality, microclimate, and sowing depth, affect growth differences among individual plants of isogenic populations. Besides these physical factors, also epigenetic components contribute to differences in growth and yield. The network that regulates crop yield is still not well understood. Although this network is expected to have epigenetic elements, it is completely unclear whether it would be possible to shape the epigenome to increase crop yield. Here we show that energy use efficiency is an important factor in determining seed yield in canola ( Brassica napus ) and that it can be selected artificially through an epigenetic feature. From an isogenic canola population of which the individual plants and their self-fertilized progenies were recursively selected for respiration intensity, populations with distinct physiological and agronomical characteristics could be generated. These populations were found to be genetically identical, but epigenetically different. Furthermore, both the DNA methylation patterns as well as the agronomical and physiological characteristics of the selected lines were heritable. Hybrids derived from parent lines selected for high energy use efficiencies had a 5% yield increase on top of heterosis. Our results demonstrate that artificial selection allows the increase of the yield potential by selecting populations with particular epigenomic states. |
| Databáze: | OpenAIRE |
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