Effects of high manganese-cultivated seedlings on cadmium uptake by various rice (Oryza sativa L.) genotypes

• DOI: 10.1016/j.ecoenv.2023.115440
• Publication Date: 2023-09-07T03:17:13Z
• Authors: Gaoxiang Huang; Yunpei Huang; Xinya Ding; Mingjun Ding; Peng Wang; Zhongfu Wang; Yinghui Jiang; Long Zou; Wendong Zhang; Zhenling Li
• Keywords: 2. Zero hunger; Manganese; Genotype; Manganese enrichment; Oryza; Distribution; Transporter; Environmental pollution; Environmental sciences; Soil; Accumulation; TD172-193.5; Rice genotypes; Seedlings; GE1-350; Cadmium

Cadmium (Cd) contamination in paddy soil threatens rice growth and food safety, enriching manganese (Mn) seedlings is expected to reduce Cd uptake by rice. The effects of 250 μM Mn-treated on reducing four genotypes (WYJ21, ZJY1578, HHZ, HLYSM) planted 0.61 mg kg-1 Cd-contaminated soil, were studied through the hydroponic pot experiments. results showed that ZJY1578 seedling had highest Mn level (459 μg plant-1), followed WYJ21 (309 less accumulated other genotypes. relative expression OsNramp5 (natural resistance-associated macrophage protein) was reduced 42.7 % but increased 23.3 HLYSM. expressions OsIRT1 (iron-regulated transporter-like 24.0-56.0 genotypes, with reduction ZJY1578. Consequently, a greater occurred than i.e., root shoot at tillering 27.8 48.5 %, respectively. At mature stage, total amount distribution brown also greatly inhibitory weakened compared stage. This study found various responses transporters among thus resulting reductions. In future, microscopic transport processes within should be explored deeply explain genotypic variation.