Phloem anatomy and function as shaped by the cell wall
Phloem anatomy and function as shaped by the cell wall
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DOI：
10.1016/j.jplph.2021.153526
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发表时间：
2021-09-21
影响因子：
4.3
通讯作者：
Braun, David M.
中科院分区：
文献类型：
--
作者：
McCubbin, Tyler J.;Braun, David M.
同化碳的分配是一个复杂的过程，包括碳水化合物从源组织到汇组织的装载、长途运输和随后的卸载。促进这个协调过程的管道网络是韧皮部组织。自从现代质量流理论首次提出以来，我们对韧皮部运输生理学的理解得到了极大的发展，这得益于随之而来的技术和实验方法的进步。最近的研究结果重新强调了韧皮部的基本解剖结构，特别是细胞壁在使光同化物通过筛元的高压流动中所起的重要作用。本文综述了韧皮部解剖学的基础工作，重点介绍了韧皮部细胞壁结构和力学的生理学研究进展。
The partitioning of assimilated carbon is a complex process that involves the loading, long-distance transport, and subsequent unloading of carbohydrates from source to sink tissues. The network of plumbing that facilitates this coordinated process is the phloem tissue. Our understanding of the physiology of phloem transport has grown tremendously since the modern theory of mass flow was first put forward, aided by the concomitant progress of technology and experimental methodologies. Recent findings have put a renewed emphasis on the underlying anatomy of the phloem, and in particular the important role that cell walls play in enabling the highpressure flow of photoassimilates through the sieve element. This review will briefly summarize the foundational work in phloem anatomy and highlight recent work exploring the physiology of phloem cell wall structure and mechanics.