College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang Sichuan, 621010, China.
Institute of Molecular Biology and Biotechnology, University of Lahore, Lahore, Pakistan.
BMC Plant Biol. 2024 Jul 11;24(1):659. doi: 10.1186/s12870-024-05371-3.
The potential of phytoremediation using garlic monoculture (MC) and intercropping (IC) system with perennial ryegrass to enhance the uptake of cadmium (Cd), chromium (Cr), and lead (Pb) were investigated.
Positive correlations were found between MC and IC systems, with varying biomass. Production of perennial ryegrass was affected differently depending on the type of toxic metal present in the soil. Root growth inhibition was more affected than shoot growth inhibition. The total biomass of shoot and root in IC was higher than MC, increasing approximately 3.7 and 2.9 fold compared to MC, attributed to advantages in root IC crop systems. Photosystem II efficiency showed less sensitivity to metal toxicity compared to the control, with a decrease between 10.07-12.03%. Among gas exchange parameters, only Cr significantly affected physiological responses by reducing transpiration by 69.24%, likely due to leaf chlorosis and necrosis.
This study exhibited the potential of garlic MC and IC with perennial ryegrass in phytoremediation. Although the different metals affect plant growth differently, IC showed advantages over MC in term biomass production.
本研究采用大蒜单作（MC）和与多年生黑麦草间作（IC）系统，探讨了利用植物修复来增强对镉（Cd）、铬（Cr）和铅（Pb）的吸收的潜力。
在不同生物量的情况下，MC 和 IC 系统之间存在正相关关系。土壤中存在的有毒金属类型对多年生黑麦草的生产有不同的影响。根生长抑制比茎叶生长抑制受影响更大。IC 中的茎叶总生物量高于 MC，比 MC 分别增加了约 3.7 倍和 2.9 倍，这归因于 IC 作物系统在根方面的优势。与对照相比，与金属毒性相比，光系统 II 效率表现出较低的敏感性，下降了 10.07-12.03%。在气体交换参数中，只有 Cr 显著影响了生理反应，使蒸腾作用降低了 69.24%，这可能是由于叶片黄化和坏死。
本研究表明，大蒜 MC 和与多年生黑麦草的 IC 具有在植物修复中的潜力。尽管不同的金属对植物生长的影响不同，但在生物量生产方面，IC 比 MC 具有优势。
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