Control of dissected leaf form in the Arabidopsis thaliana relative Cardamine hirsuta

拟南芥近缘碎米荠中解剖叶形态的控制

• 批准号: BB/D010977/1
• 负责人: Miltos Tsiantis
• 金额: $ 67.73万
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FD010977%2F1
• 关键词: Control; dissected; leaf; form; Arabidopsis

A key problem in biology is to understand how different organisms come to have different forms. In plants this variation in form is obvious in the many different leaf shapes one sees during a walk in the park. Leaves are also interesting to study because they play a key role in the food chain being the main photosynthetic organs of land plants and thus responsible for CO2 fixation in terrestrial ecosystems. For these reasons, understanding how diversity in leaf form in generated is of considerable interest to scientists. To study this problem we work with the hairy bittercress (Cardamine hirsuta), which is a plant that has leaves fully subdivided into small leaflets. The presence of leaflets makes this plant very different to its close relative the thale cress (Arabidopsis thaliana), which has entire, undivided leaves. We already know a lot about how entire leaf shape is produced in A.thaliana because it is easy to grow and do experiments with. Hairy bittercress is also very easy to work with in the lab, so we will use it to understand how leaflets are produced, what controls their number, and ultimately why this plant makes leaflets whereas its relative the thale cress does not.

生物学的一个关键问题是了解不同的生物体是如何形成不同的形态的。在植物中，这种形式的变化很明显，在公园散步时，你会看到许多不同的叶子形状。研究叶片也很有趣，因为它们在食物链中扮演着关键角色，是陆地植物的主要光合器官，因此在陆地生态系统中负责二氧化碳的固定。由于这些原因，了解叶片形态的多样性是如何产生的是科学家们相当感兴趣的。为了研究这个问题，我们研究了多毛苦菜（Cardamine hirsuta），这是一种叶子完全细分为小叶的植物。小叶的存在使这种植物与它的近亲拟南芥（拟南芥）非常不同，拟南芥有完整的、不分裂的叶子。我们已经对拟南芥的整个叶片形状是如何形成的有了很多了解，因为它很容易种植和实验。毛苦菜在实验室里也很容易操作，所以我们将用它来了解小叶是如何产生的，是什么控制了它们的数量，以及最终为什么这种植物会产生小叶，而它的亲戚泰利菜却不会。

项目成果

Pan-European study of genotypes and phenotypes in the Arabidopsis relative Cardamine hirsuta reveals how adaptation, demography, and development shape diversity patterns.

• DOI: 10.1371/journal.pbio.3002191
• 发表时间: 2023-07
• 期刊: PLoS biology
• 影响因子: 9.8