Flowering in space
Flowering in space
复制标题
太空中绽放
DOI：
10.1007/s12217-018-9626-5
复制
发表时间：
2018
影响因子：
1.8
通讯作者：
Hui Qiong Zheng
中科院分区：
文献类型：
--
作者：
Hui Qiong Zheng
植物的繁殖成功通常取决于它们的开花时间是否适应重力保持不变的陆地环境。植物是否可以遵循同样的规则来确定它们在太空微重力下的开花时间是未知的。虽然已经作了许多尝试，试图在空间种植一种植物，使其经历一个完整的生命周期，但显然还没有关于在空间微重力条件下控制植物开花的公开资料。在这里，我们重点关注了两个方面。首先，微重力条件下的环境和内在因素与开花控制有关。第二，植物源调节因子参与微重力条件下的开花调控。微重力下影响植物开花的潜在环境和内在因素包括光照、生物钟和长距离信号，而植物源开花调节因子包括赤霉酸、乙烯、microRNA和糖。本文还介绍了在我国返回式卫星（SJ-8和SJ-10）上进行的空间实验和在我国TG-2空间实验室上进行的实验所取得的结果。最后，我们建议，需要从连续几代人的长期空间实验和在分子水平上的调控网络的系统分析，以了解植物开花控制在空间微重力条件下的机制。
The reproductive success of plants is often dependent on their flowering time being adapted to the terrestrial environment, in which gravity remain constant. Whether plants can follow the same rule to determine their flowering time under microgravity in space is unknown. Although numerous attempts have been made to grow a plant through a complete life cycle in space, apparently no published information exists concerning the flowering control of plants under microgravity in space. Here, we focused on two aspects. Firstly the environmental and intrinsic factors under microgravity related to flowering control. Secondly, the plant-derived regulators are involved in flowering control under microgravity condition. The potential environmental and intrinsic factors affect plant flowering under microgravity may include light, biological circadian clock as well as long-distance signaling, while the plant-derived flowering regulators in response to microgravity could include gibberellic acid, ethylene, microRNA and sugar. The results we have obtained from the space experiments on board the Chinese recoverable satellites (the SJ-8 and the SJ-10) and the experiment on the Chinese space lab TG-2 are also introduced. We conclude by suggesting that long-term space experiments from successive generations and a systematic analysis of regulatory networks at the molecular level is needed to understand the mechanism of plant flowering control under microgravity conditions in space.