Scholarlink

Purpose <p>World food production is under great threat due to heavy metal pollution from natural and anthropogenic activities. Lead (Pb) is considered one of the toxic elements and has adverse effects on growth, physiology and yield of tomato plants (<i>Solanum lycopersicum</i> L.). Therefore, it is imperative to reduce negative effects of Pb toxicity in plants.</p> Methods <p>A pot experiment was conducted to evaluate the effects of biochar (BC) and phosphorous modified biochar (PMBC) on tomato growth and uptake of Pb under Pb contaminated soil.</p> Results <p>The result showed that Pb contaminated soil had a negative effect on the morphological, physiological and biochemical parameters of the tomato plants compared to control, whereas BC and PMBC had significantly improved all the attributes. The application of BC and PMBC in Pb contaminated soil had improved the shoot dry biomass (4.7% and 13.7%), chlorophyll a (4.4% &amp; 23.0%), chlorophyll b (15.1% &amp; 23.4%) and carotenoids (10.2% &amp; 18.9%) compared to Pb-contaminated soil, respectively. Enzymatic activities like CAT (17.4%) and POX (24.0%) were enhanced with the addition of PMBC compared to Pb contaminated soil. The PMBC has significantly reduced DTPA extractable soil Pb (29.4%), Pb in roots and shoots (51.8% and 32.3%), and BAC (0.52%) respectively.</p> Conclusion <p>The results evidenced that addition of PMBC to Pb contaminated soil had significantly reduced Pb uptake by the tomato plants. Thus, the application of phosphorous modified biochar is the best amendment to mitigate Pb phytotoxicity and uptake by tomato plants.</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

Effect of Phosphorus Modified Cotton Stick Biochar on Growth, Photosynthesis, Enzymatic Activities and Lead (Pb) Uptake in Tomato Plants Grown in Pb-contaminated Soil

  • 期刊论文

  • 发表日期：

    2025年2月7日

查看全文
  • Zaffar Malik,
  • Aleena Shabir,
  • Ahmad Ali,
  • Muhammad Naveed Aslam,
  • Humera Aziz,
  • Syed Farhan Haider Bukhari,
  • Sana Noreen,
  • Usama Ali Tahir,
  • Muhammad Rizwan

摘要

Purpose

World food production is under great threat due to heavy metal pollution from natural and anthropogenic activities. Lead (Pb) is considered one of the toxic elements and has adverse effects on growth, physiology and yield of tomato plants (Solanum lycopersicum L.). Therefore, it is imperative to reduce negative effects of Pb toxicity in plants.

Methods

A pot experiment was conducted to evaluate the effects of biochar (BC) and phosphorous modified biochar (PMBC) on tomato growth and uptake of Pb under Pb contaminated soil.

Results

The result showed that Pb contaminated soil had a negative effect on the morphological, physiological and biochemical parameters of the tomato plants compared to control, whereas BC and PMBC had significantly improved all the attributes. The application of BC and PMBC in Pb contaminated soil had improved the shoot dry biomass (4.7% and 13.7%), chlorophyll a (4.4% & 23.0%), chlorophyll b (15.1% & 23.4%) and carotenoids (10.2% & 18.9%) compared to Pb-contaminated soil, respectively. Enzymatic activities like CAT (17.4%) and POX (24.0%) were enhanced with the addition of PMBC compared to Pb contaminated soil. The PMBC has significantly reduced DTPA extractable soil Pb (29.4%), Pb in roots and shoots (51.8% and 32.3%), and BAC (0.52%) respectively.

Conclusion

The results evidenced that addition of PMBC to Pb contaminated soil had significantly reduced Pb uptake by the tomato plants. Thus, the application of phosphorous modified biochar is the best amendment to mitigate Pb phytotoxicity and uptake by tomato plants.