Seasonal gene expression signatures of delayed fertilization in Fagaceae
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- Akiko Satake
- Department of Biology, Faculty of Science Kyushu University Fukuoka Japan
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- Kayoko Ohta
- Department of Biology, Faculty of Science Kyushu University Fukuoka Japan
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- Noriko Takeda‐Kamiya
- Technology Platform Division, Mass Spectrometry and Microscopy Unit RIKEN Center for Sustainable Resource Science Yokohama Japan
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- Kiminori Toyooka
- Technology Platform Division, Mass Spectrometry and Microscopy Unit RIKEN Center for Sustainable Resource Science Yokohama Japan
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- Junko Kusumi
- Department of Environmental Changes, Faculty of Social and Cultural Studies Kyushu University Fukuoka Japan
書誌事項
- 公開日
- 2023-07-18
- 資源種別
- journal article
- 権利情報
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- http://creativecommons.org/licenses/by-nc/4.0/
- DOI
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- 10.1111/mec.17079
- 10.1101/2023.03.02.530775
- 公開者
- Wiley
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説明
<jats:title>Abstract</jats:title> <jats:p> In the family Fagaceae, fertilization is delayed by several weeks to 1 year after pollination, leading to 1‐ or 2‐year fruiting species depending on whether fruiting occurs in the same or the next year after flowering. To investigate physiological responses underlying the regulation of delayed fertilization, we monitored seasonal changes in genome‐wide gene expression in tissues including leaves and buds over 2 years under natural conditions in one‐ ( <jats:italic>Quercus glauca</jats:italic> ) and 2‐year fruiting species ( <jats:italic>Lithocarpus edulis</jats:italic> ). Genes associated with metabolic changes in response to winter cold, photosynthesis and cell proliferation, which are essential for survival and growth, showed highly conserved seasonal expression profiles between species. However, seasonal expression profiles diverged between species in genes associated with pollination, an important process contributing to the origin and maintenance of the reproductive barrier between plant species. By comparing seasonal progression of ovule development and gene expression in pistillate flowers, we revealed that ovules started developing after winter in the 2‐year fruiting species, which could be linked to the activation of genes involved in fertilization and female gametophyte development after winter. These findings suggest that the 2‐year fruiting species may have evolved a requirement of winter cold to prevent fertilization before winter and facilitate fertilization and embryo development in the following spring when temperature rises. This study offers new possibilities to explore the evolution of reproductive strategies in Fagaceae. </jats:p>
収録刊行物
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- Molecular Ecology
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Molecular Ecology 32 (17), 4801-4813, 2023-07-18
Wiley
