Elaborated pollen packaging and dispensing mechanism induced by petal architecture from a Papaveraceae species
Elaborated pollen packaging and dispensing mechanism induced by petal architecture from a Papaveraceae species
复制标题
由罂粟科物种的花瓣结构诱导的精心设计的花粉包装和分配机制
DOI：
10.7717/peerj.7066
复制
发表时间：
2019-06
期刊：
影响因子：
2.7
通讯作者：
Wang Shaoming
中科院分区：
文献类型：
--
作者：
Yang Shanlin;Chu Guangming;Shi Xiang;Wang Shaoming
二次花粉提呈(SPP)是一种提高花粉传递效率的生殖策略，已被探索了200多年，产生了10种类型的SPP。短命植物Hypecoum Erectom L.(罂粟科)具有精细的花瓣结构。中叶是SPP的关键功能器官。为了探讨中叶结构的重要性，我们在大田条件下对直肠草的开花过程、中叶卷曲运动和生长、授粉特性、授粉效率和交配系统进行了测定。黄色的中叶结构在吸引传粉者方面起着重要作用。花药裂开时，花药内侧花瓣上的中裂片是一种多余的兜状结构，约占总花粉粒的84%。然后，这些花粉向上生长，并通过中间裂片的卷曲逐渐向传粉者提供花粉。科莱蒂科的科莱特斯蜜蜂是直立木蜂唯一有效的传粉者。SPP机制提高了大麦的花粉传递效率。中间裂片包裹着花粉向上生长，与柱头接触，比花冠向上生长，为自花授粉和异交提供了优势。直肠草是一种自交和异交的混合交配系统。因此，SPP机制在授粉过程中起着关键作用，是提高授粉效率和促进生殖成功所必需的。
Secondary pollen presentation (SPP) is a reproductive strategy that enhances the efficiency of pollen transfer, which has been explored for more than 200 years, resulting in 10 identified types of SPP. The ephemeral plant Hypecoum erectum L. (Papaveraceae) has an elaborate petal structure. The middle lobe is a key functional organ in SPP. To explore the importance of the middle lobe structure, we measured the flowering process, the curling movement and growth of the middle lobe, pollination characteristics, pollination efficiency, and the mating system in H. erectum in the field. The yellow middle lobe structure had an important role in attracting pollinators. The middle lobes on the inner petals function as a redundant cucullate structure and wrapped about 84% of the total pollen grains as soon as the anthers dehisced. These then grew upward and gradually presented pollen to pollinators via the roll out of the middle lobes. One bee species, Colletes vestitus from Colletidae, was the only effective pollinator of H. erectum. The SPP mechanism increased the efficiency of pollen transfer by C. vestitus. The middle lobes, which wrapped pollen and grew upward, contacted the stigma and provided an advantage for self-pollination and outcrossing by growing upward higher than the corolla. Hypecoum erectum L. has a mixed mating system with selfing and outcrossing. Thus, the SPP mechanism plays a key role during the pollination process and is necessary for improving pollination efficiency and promoting reproductive success.
登录
查看更多内容
影响因子：
--
作者：
Shangguan Fa-Zhi;Cheng Jin;Xiong Yuan-xin;Luo Yi-bo
通讯作者：
Shangguan Fa-Zhi;Cheng Jin;Xiong Yuan-xin;Luo Yi-bo
影响因子：
--
作者：
Lu Ting
通讯作者：
Lu Ting
影响因子：
1.1
作者：
L. B. Thien;B. Marcks
通讯作者：
L. B. Thien;B. Marcks
影响因子：
0.8
作者：
Z. S. Rogers
通讯作者：
Z. S. Rogers
影响因子：
--
作者：
L. Zhongjian;C. Lijun;Liu Kewei;L. Liqiang;Ma Xue-Yong;Rao Wenhui
通讯作者：
L. Zhongjian;C. Lijun;Liu Kewei;L. Liqiang;Ma Xue-Yong;Rao Wenhui