| 词汇 | callose |
| 释义 | BETA Examples of callosecallose isn’t in the Cambridge Dictionary yet. You can help! Release of bud dormancy by chilling involves removal of the callose plugs from the plasmodesmata and regaining of the capacity for symplastic transport. The callose layer is rapidly degraded upon imbibition of intact seeds, in correlation with the loss of semipermeability. Massive callose accumulation is not a general feature of semipermeable layers in seed-covering structures. Due to its small size, puncture force measurements are not feasible with tobacco, and detection of callose in tobacco seeds is hampered by the high autofluorescence of the covering layers. Acquisition of semipermeability and callose deposition in this layer coincide during seed development and are associated with distinct aniline-blue-staining vesicles in the endosperm envelope cells. Those symptoms are related to callose deposition at the sieve plates and subsequent degeneration of the phloem. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Silicon helps the plant cells defend against fungal attack by degrading haustoria and by producing callose and papilla. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is thought to be manufactured at the cell wall by callose synthases and is degraded by -1,3-glucanases. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The next component to be added is callose, which is polymerized directly at the cell plate by callose synthases. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a repair mechanism, if an insect injures a cell and the pressure drops, the callose will precipitate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Callose stays in solution as long at the cell contents are under pressure. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sieve-tube members that are alive contain a polymer called callose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. After the formation of the four microspores, which are contained by callose walls, the development of the pollen grain walls begins. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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