Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 64, Issue -, Pages -Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2021.102135
Keywords
Xylem vessel cell; Secondary cell wall; Programmed cell death; VND
Categories
Funding
- JSPS KAKENHI [JP20H03271, JP20K21415]
- MEXT KAKEN-HI [JP18H05484, JP18H05489, JP20H05405, JP21H05652]
- ERATO from JST [JPMJER1602]
- Toray Science Foundation
- Naito Foundation
- Asahi Glass Foundation
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Xylem vessels transport water and essential low-molecular-weight compounds throughout vascular plants. The differentiation of xylem vessel cells involves secondary cell wall deposition and programmed cell death, leading to the formation of a hollow tube-like structure with a rigid outer shell. Research has identified key transcriptional switches and is now focusing on dissecting cell differentiation at the single cell level.
Xylem vessels transport water and essential low-molecular-weight compounds throughout vascular plants. To achieve maximum performance as conductive tissues, xylem vessel cells undergo secondary cell wall deposition and programmed cell death to produce a hollow tube-like structure with a rigid outer shell. This unique process has been explored in detail from a cell biology and molecular biology perspective, culmi-nating in the identification of the master transcriptional switches of xylem vessel cell differentiation, the VASCULAR-RELATED NAC-DOMAIN (VND) proteins. High-resolution an-alyses of xylem vessel cell differentiation have since accelerated and are now moving toward single cell-level dissection from a variety of directions. In this review, we introduce the current model of xylem vessel cell differentiation and discuss possible future directions in this field.
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