Scholarlink

Aims <p>The chemical composition of phytoliths is important for the study of paleoenvironmental reconstruction, agricultural sustainability, and terrestrial elemental cycles, but there is limited understanding of the seasonality of Si accumulation in plants.</p> Methods <p>In this study, the citric acid-extractable silicon content (citric-Si) and SiO<sub>2</sub> content/ % in phytoliths were measured in new and old leaves of <i>Dendrocalamus ronganensis</i> bamboo grown on a karst mountain throughout the plant growing season.</p> Results <p>EPMA (electron probe microanalysis) showed that the average SiO<sub>2</sub> and other mineral element content in phytoliths ranged from 73.1% to 82.9% and 0.8% to 2.9%, respectively. PhytolithSiO<sub>2</sub> content and citric-Si concentration in old leaves increased throughout the growth season, and exhibited higher values than those in corresponding new leaves. Citric-Si content in new leaves was higher in April, June and July. Significant positive correlations were observed between citric-Si concentrations in new leaves and monthly precipitation from June to December. SiO<sub>2</sub> content in phytoliths in both new and old leaves exhibited seasonal fluctuations, with peak concentrations observed in May and July–August.</p> Conclusion <p>A positive correlation was observed between citric-Si and SiO<sub>2</sub> content in phytoliths in both old and post-June new leaves, suggesting that SiO<sub>2</sub> content in phytoliths is modulated by dissolved silicon (DSi) dynamics, a process predominantly regulated by transpiration-driven mass flow. Understanding linkages between citric-Si and SiO<sub>2</sub> content in phytoliths provides critical insights into both the formation mechanism and ecological implications of phytolith chemical composition.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Silicon accumulation in Dendrocalamus ronganensis leaves: Monthly variability and environmental sensitivity

  • 期刊论文

  • 发表日期：

    2026年2月9日

查看全文
  • Rencheng Li,
  • Mengjun Hu,
  • Xiaofang Chen,
  • Jun Fan,
  • Ying Zhang,
  • Zongyu Xiao,
  • Yuzhe Wu,
  • Xiajuan Li

摘要

Aims

The chemical composition of phytoliths is important for the study of paleoenvironmental reconstruction, agricultural sustainability, and terrestrial elemental cycles, but there is limited understanding of the seasonality of Si accumulation in plants.

Methods

In this study, the citric acid-extractable silicon content (citric-Si) and SiO2 content/ % in phytoliths were measured in new and old leaves of Dendrocalamus ronganensis bamboo grown on a karst mountain throughout the plant growing season.

Results

EPMA (electron probe microanalysis) showed that the average SiO2 and other mineral element content in phytoliths ranged from 73.1% to 82.9% and 0.8% to 2.9%, respectively. PhytolithSiO2 content and citric-Si concentration in old leaves increased throughout the growth season, and exhibited higher values than those in corresponding new leaves. Citric-Si content in new leaves was higher in April, June and July. Significant positive correlations were observed between citric-Si concentrations in new leaves and monthly precipitation from June to December. SiO2 content in phytoliths in both new and old leaves exhibited seasonal fluctuations, with peak concentrations observed in May and July–August.

Conclusion

A positive correlation was observed between citric-Si and SiO2 content in phytoliths in both old and post-June new leaves, suggesting that SiO2 content in phytoliths is modulated by dissolved silicon (DSi) dynamics, a process predominantly regulated by transpiration-driven mass flow. Understanding linkages between citric-Si and SiO2 content in phytoliths provides critical insights into both the formation mechanism and ecological implications of phytolith chemical composition.