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Reactive oxygen species (ROS) play an important role in the regulation of seed dormancy release and germination. Low levels of ROS can promote seed germination, while excessively high levels of ROS can reduce seed vigor and germination rate. Pre-harvest sprouting (PHS) is an important agronomic trait that can cause severe decrease of crop yield and grain quality. Pre-harvest sprouting and seed dormancy are two manifestations of the same trait. Therefore, studying the dual role of ROS in seed dormancy and germination can reveal the molecular mechanisms underlying pre-harvest sprouting. For this purpose, this paper summarized the subcellular locations and metabolic pathways of ROS production during seed germination, focusing on the interaction of ROS with biomacromolecules, plant hormones and other small molecules and the signaling pathways of ROS functionalization. This review provides a theoretical basis for understanding the mechanisms of ROS in the process of crop pre-harvest sprouting.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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