Amanullah Fatima, Khan Waqas-Ud-Din
Sustainable Development Study Centre, Government College University, Lahore 54000, Pakistan.
Department of Agriculture, Government College University, Lahore 54000, Pakistan.
Plants (Basel). 2023 Feb 20;12(4):958. doi: 10.3390/plants12040958.
Crop cultivation in heavy metal (HM)-polluted soils is a routine practice in developing countries that causes multiple human health consequences. Hence, two independent studies have been performed to investigate the efficiency of rice husk biochar (BC) and three fungal species, (F1), (F2) and (F3), to improve the growth and physiology of L. plants grown on soil contaminated with Cu and Ni. Initially, a biosorption trial was conducted to test the HM removal efficiency of species F1, F2 and F3. Among them, F2 sp. showed the maximum Cu and Ni removal efficiency. Then, a pot study was conducted with two cultivars (spring corn and footer corn) having eleven treatments with three replicates. The results demonstrated a significant genotypic variation among both cultivars under applied HM stress. The maximum decreases in leaf Chl a. (53%), Chl b. (84%) and protein (63%) were reported in footer corn with applied Cu stress. The combined application of biochar and F2 increased leaf CAT (96%) in spring corn relative to Cu stress. Altogether, it was found that BC + F2 treatment showed the maximum efficiency in combatting Cu and Ni stress in spring corn.
在重金属污染土壤中种植作物是发展中国家的常见做法，会对人类健康造成多种影响。因此，开展了两项独立研究，以探究稻壳生物炭（BC）和三种真菌物种（F1、F2和F3）对生长在铜和镍污染土壤上的番茄植株生长和生理状况的改善效果。首先，进行了生物吸附试验，以测试F1、F2和F3物种对重金属的去除效率。其中，F2物种对铜和镍的去除效率最高。然后，对两个品种（春玉米和footer玉米）进行了盆栽试验，设置了11种处理，每种处理重复三次。结果表明，在施加重金属胁迫的情况下，两个品种之间存在显著的基因型差异。在施加铜胁迫的footer玉米中，叶片叶绿素a（53%）、叶绿素b（84%）和蛋白质（63%）的降幅最大。与铜胁迫相比，生物炭和F2的联合应用使春玉米叶片中的过氧化氢酶（CAT）增加了96%。总体而言，发现BC + F2处理在应对春玉米中的铜和镍胁迫方面效率最高。
