树木遗传发育分享 http://blog.sciencenet.cn/u/buffer

博文

Sector analysis reveals patterns of cambium differentiation

已有 1391 次阅读 2018-10-27 19:48 |个人分类:植物之美|系统分类:论文交流

 

Sector analysis reveals patterns of cambium differentiation in poplar stems

作者:Bossinger, G (Bossinger, Gerd)[ 1 ] ; Spokevicius, AV (Spokevicius, Antanas V.)[ 1 ]

查看 ResearcherID 和 ORCID

JOURNAL OF EXPERIMENTAL BOTANY

卷: 69

期: 18

页: 4339-4348

DOI: 10.1093/jxb/ery230

出版年:AUG 17 2018

文献类型:Article

查看期刊影响力

摘要

We used sector analysis to study cambium development and dynamics and to test whether fundamental developmental and functional differences exist between cambial initials as true ` stem cells' and more differentiated mother cells. In many higher plants, a cylindrical lateral meristem, the vascularcambium, forms along the plant axis. Most notably in stems of perennial tree species, this meristem gives rise to xylem (wood) towards the inside of the trunk and phloem (bark) towards the outside. As such, the vascular cambium is responsible for the production of most of the planet's forest biomass, significantly contributing to the global carbon cycle. Using the bacterial uidA reporter gene in Agrobacterium-based in vivo stem transformation experiments in poplar trees, we created 379 cambium sectors that originated from the transformation of individual cells. Results from our analysis of sector frequency and patterns are consistent with the poplar cambium featuring a single layer of true cambial initials (being able to divide both anti-and periclinally). We show that initials are frequently lost from the cambium, that such cell loss rarely occurs at mother cell level, that phloem and xylem differentiation are controlled independently, and that the frequency of mother cell replenishment is not pre-determined.


关键词:Cambium initials; cell fate; poplar; stem cells; wood formation; xylogenesis



同期的评论:


Cell differentiation in the vascular cambium: new tool, 120-year debate

作者:Ramos, AC (Ramos, Ana C.)1 ] Regan, S (Regan, Sharon)1 ]


JOURNAL OF EXPERIMENTAL BOTANY


卷: 69

期: 18

页: 4231-4233

DOI: 10.1093/jxb/ery285

出版年:AUG 17 2018

文献类型:Editorial Material

查看期刊影响力

摘要

Poplar is an important model for gene discovery and characterization. These trees undergo extensive secondary growth to produce wood from the vascularcambium, but it has been challenging to visualize the earliest stages of development. Bossinger and Spokevicius (2018) have used a technique known as sector analysis to visualize cell fate, addressing a long-standing debate on the origins of xylem and phloem in tree cells and providing an unprecedented look at initial wood formation.

关键词

关键词:Cambium initialscell fatepoplarstem cellswood formationxylogenesis




http://blog.sciencenet.cn/blog-39748-1143107.html

上一篇:光照强度影响分生组织活动
下一篇:课题组招聘啦---快来做同事吧

0

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2020-7-13 03:41

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部