First record of blue ring in a dicotyledonous angiosperm wood

IF 2.1 3区农林科学 Q2 FORESTRY

Trees Pub Date : 2024-12-18 DOI:10.1007/s00468-024-02592-9

Alma Piermattei, Francesca Secchi, Niccolò Tricerri, Roni Aloni, Rachele Gamba, Flavio Ruffinatto, Alan Crivellaro

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引用次数: 0

Key message

We report the occurrence of blue rings in a dicotyledonous angiosperm wood and show the differences between blue rings and tension wood.

Abstract

In plant stems, local and short-term climatic factors highly influence programmed wood cell production, size, shape, wall composition and thickness. Previous analyses of conifer woods have highlighted the formation of a continuous layer of less lignified axial tracheids, the so-called blue ring. Until now, blue rings have never been described in dicotyledonous angiosperm woods. Here, we report the formation of blue rings on two Populus x canadensis clones (“Tucano” and “San Martino”), and we discuss potential causal factors related to environmental growing conditions, wood formation, and plant hormones. Blue rings were observed in all 13 poplar cuttings included in the study, with the primary driving factor identified as a lack of hormonal signalling due to apical bud and young leaf damage after intense warmth. Our analyses emphasised the strong influence of short-term events on blue ring formation, the interconnection between lignification and leaf-originating signals, and a clone-specific response to apical bud and leaf damage. Identifying blue rings in angiosperms could promote studies on plant adaptation to a changing climate and refine paleoclimate reconstructions from tree rings.

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摘要在植物茎中，局部和短期气候因素对程序木细胞的生成、大小、形状、壁成分和厚度有很大影响。以前对针叶树木材的分析强调了木质化程度较低的轴管连续层的形成，即所谓的蓝环。到目前为止，蓝环还从未在双子叶被子植物的木材中出现过。在此，我们报告了两种杨树 x canadensis 克隆（"Tucano "和 "San Martino"）上蓝环的形成，并讨论了与环境生长条件、木材形成和植物激素有关的潜在致因。研究中的所有 13 个杨树插条都观察到了蓝环，其主要驱动因素被确定为顶芽和幼叶在强暖气后受损导致激素信号缺失。我们的分析强调了短期事件对蓝环形成的强烈影响、木质化与叶片起源信号之间的相互联系，以及克隆对顶芽和叶片损伤的特异性反应。鉴定被子植物中的蓝环可以促进植物对气候变化适应性的研究，并完善根据树木年轮进行的古气候重建。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Trees 农林科学-林学

CiteScore

4.50

自引率

4.30%

发文量

113

审稿时长

3.8 months

期刊介绍： Trees - Structure and Function publishes original articles on the physiology, biochemistry, functional anatomy, structure and ecology of trees and other woody plants. Also presented are articles concerned with pathology and technological problems, when they contribute to the basic understanding of structure and function of trees. In addition to original articles and short communications, the journal publishes reviews on selected topics concerning the structure and function of trees.