UNRAVELING THE PROCESS OF THERMOREGULATION DURING THE SEED DEVELOPMENT IN BRASSICA NAPUS
| Autoři | |
|---|---|
| Rok publikování | 2023 |
| Druh | Konferenční abstrakty |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | Studies on plant development under warm temperature conditions provide knowledge about the temperature's influence on crop yield. Brassica napus is the second most widely produced oilseed worldwide. Characterizing the thermomorphogenesis of B. napus grown in long-term heat stress conditions identified accelerated plant growth, reduced fertilization rate, and increased seed abortion rate. The accelerated and defective embryo development and pre- harvest seed sprouting in plants grown under heat stress suggest a possible reduction in seed dormancy. We identified a reduced expression of ABA biosynthetic genes and dormancy markers. However, the phenotypes were not reverted by external ABA applications. We hypothesized a link between high temperatures, accelerated embryo growth, and the mechano-sensing pathway during the early seed maturation phase under heat stress. Studies in this research area will pave the way toward producing thermotolerant varieties of B. napus with better crop yield. |
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