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<p>The rising atmospheric CO<sub>2</sub> concentration and temperature under climate change can alter the primary and secondary metabolism of plants. This study aims to investigate the production and active ingredients of <i>Pseudostellaria heterophylla</i> in biochar amended soil under joint treatments of CO<sub>2</sub> enrichment and higher temperature. Series of pot tests were conducted in the control (i.e., 400&#xa0;ppm CO<sub>2</sub>, 23.5℃) and rising CO<sub>2</sub> concentration and temperature (i.e., 1000&#xa0;ppm CO<sub>2</sub>, 28.5℃) chambers in non-biochar and biochar-treated soils, respectively. Among all the conditions, 3% biochar treatment without rising CO<sub>2</sub> concentration and temperature induced the highest production of the medicinal organ (root tuber) of <i>P. heterophylla</i>. The rising CO<sub>2</sub> and temperature reduced the production of <i>P. heterophylla</i> by up to 87% in the absence of biochar (<i>p</i> &lt; 0.05). Under biochar treatment, it decreased the fresh production by 68% and the dry production by 73%. Moreover, rising CO<sub>2</sub> concentration and temperature as well as biochar treatment had a non-significant negative impact on the concentration of polysaccharides in <i>P. heterophylla</i> root tuber. However, the rising CO<sub>2</sub> concentration and temperature, particularly in the absence of biochar amendment, improved the synthesis of saponins by up to 25% (<i>p</i> &lt; 0.05). This indicates an enhanced quality of <i>P. heterophylla</i> in future climate change. This study reveals that biochar could mitigate the negative effects of future climate change on the production of <i>P. heterophylla</i>. The results of this study could supply the valuable basis for future agriculture practices.</p>

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Production and Active Ingredients of Pseudostellaria Heterophylla in Biochar Amended Soil Under Elevated CO2 and Temperature

  • 期刊论文

  • 发表日期：

    2025年3月6日

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  • Yu Chen Wang,
  • Jun Jun Ni,
  • Hao Wen Guo,
  • Jia Xin Liao

摘要

The rising atmospheric CO2 concentration and temperature under climate change can alter the primary and secondary metabolism of plants. This study aims to investigate the production and active ingredients of Pseudostellaria heterophylla in biochar amended soil under joint treatments of CO2 enrichment and higher temperature. Series of pot tests were conducted in the control (i.e., 400 ppm CO2, 23.5℃) and rising CO2 concentration and temperature (i.e., 1000 ppm CO2, 28.5℃) chambers in non-biochar and biochar-treated soils, respectively. Among all the conditions, 3% biochar treatment without rising CO2 concentration and temperature induced the highest production of the medicinal organ (root tuber) of P. heterophylla. The rising CO2 and temperature reduced the production of P. heterophylla by up to 87% in the absence of biochar (p < 0.05). Under biochar treatment, it decreased the fresh production by 68% and the dry production by 73%. Moreover, rising CO2 concentration and temperature as well as biochar treatment had a non-significant negative impact on the concentration of polysaccharides in P. heterophylla root tuber. However, the rising CO2 concentration and temperature, particularly in the absence of biochar amendment, improved the synthesis of saponins by up to 25% (p < 0.05). This indicates an enhanced quality of P. heterophylla in future climate change. This study reveals that biochar could mitigate the negative effects of future climate change on the production of P. heterophylla. The results of this study could supply the valuable basis for future agriculture practices.