期刊
NEW PHYTOLOGIST
卷 234, 期 2, 页码 422-434出版社
WILEY
DOI: 10.1111/nph.17978
关键词
dicotyledons; herbaceous species; monocotyledons; root anatomy; root coordinating strategies
资金
- National Natural Science Foundation of China [32030075, 31971506, 32101381]
- China Postdoctoral Science Foundation [2019M660857, 2020T130690]
- Special Research Assistant Grant Programme of the Chinese Academy of Sciences
The root anatomical traits and functions in monocotyledonous and dicotyledonous herbs differ, with monocots showing a slight reduction in absorption capacity and dicots transitioning from absorption to transportation.
Root anatomical traits play crucial roles in understanding root functions and root form-function linkages. However, the root anatomy and form-function linkages of monocotyledonous and dicotyledonous herbs remain largely unknown. We measured order-based anatomical traits and mycorrhizal colonization rates of 32 perennial herbs of monocotyledons and dicotyledons in a temperate steppe. For monocots, relative constant proportion of cortex and mycorrhizal colonization rates, but increased cell-wall thickening of the endodermis and proportion of stele were observed across root orders, indicating a slight reduction in absorption capacity and improvement in transportation capacity across orders. For dicots, the cortex and mycorrhizal colonization disappeared in the fourth-order and/or fifth-order roots, whereas the secondary vascular tissue increased markedly, suggesting significant transition of root functions from absorption to transportation across root orders. The allometric relationships between stele and cortex differed across root orders and plant groups, suggesting different strategies to coordinate the absorption and transportation functions among plant groups. In summary, our results revealed different functional transition patterns across root orders and distinct strategies for coordinating the absorption and transportation of root system between monocots and dicots. These findings will contribute to our understanding of the root form and functions in herbaceous species.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据