文献类型：期刊文献

英文题名：High iron supply enhances cadmium accumulation in the aerial tissues by remodeling the root cell walls in Populus cathayana

作者：Yang, Lingyu[1] Ding, Shen[1,2] Chen, Xin[1] Cheng, Yao[1] Shu, Peiqi[1] Wu, Jiangting[1] Ma, Chaofeng[3] Fayyaz, Payam[4] Zhou, Jing[1] Deng, Shurong[1] Luo, Zhi-Bin[1,5,6] Shi, Wenguang[1]

第一作者：Yang, Lingyu

通信作者：Luo, ZB[1];Shi, WG[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Henan Agr Univ, Coll Forestry, Zhengzhou 450046, Peoples R China;[3]Van Res Intelligence Technol Zhengzhou Co Ltd, Zhengzhou 450046, Peoples R China;[4]Univ Yasuj, Agr & Nat Resources Fac, Forest Range & Watershed Management Dept, Yasuj 7591963179, Iran;[5]Chinese Acad Forestry, Inst Ecol Conservat & Restorat, Beijing 100091, Peoples R China;[6]Chinese Acad Forestry Yellow River Delta, Comprehens Expt Ctr, Dongying 257000, Shandong, Peoples R China

年份：2025

卷号：228

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20251218098361);Scopus(收录号：2-s2.0-105000583488);WOS:【SCI-EXPANDED(收录号:WOS:001455959900001)】；

基金：This study was jointly supported by the Fundamental Research Funds of CAF (grant nos. CAFYBB2022QC001-1, CAFYBB2021QB001, CAFYBB2020ZY002-2), the National Natural Science Foundation of China (grant nos. 32001347, 31901286 and 32371841), and the Key Research and Development Program of Shandong Province (Grant no. 2023CXPT026). The platform at the facilities of the State Key Laboratory of Tree Genetics and Breeding is acknowledged.

语种：英文

外文关键词：Fe; Cd; Translocation; MiRNAs; Regulatory network

摘要：High iron (Fe) supply can enhance Cd accumulation in the aerial tissues of poplars, but the underlying mechanisms remain unknown. Here, we exposed Populus cathayana to either 0 or 120 mu M CdCl2 in combination with either 50 or 200 mu M FeCl3 for 30 days. We found that high Fe supply alleviated Cd-induced decreases in the concentrations of Fe and photosynthetic pigments in the leaves of P. cathayana, thereby improving the photosynthesis and total biomass. Additionally, high Fe increased the Cd2 + influxes on the root tips and promoted Cd translocation from the roots to the aboveground tissues of P. cathayana. Consequently, the concentrations and total amount of Cd were increased in the aerial tissues of P. cathayana after adding high Fe. Interestingly, in the roots of Cd-treated P. cathayana, the expression levels of genes involved in cell wall remodeling were altered upon supplementation with high Fe, whereas the expression of transporter genes remained unchanged. High Fe addition resulted in the reconstruction of root cell walls of Cd-exposed P. cathayana, which reduced the Cd deposition in root cell walls, thereby promoting Cd translocation from the roots to the aerial tissues. A regulatory network dominated by several transcription factors and miRNAs, such as MYB103, WRKY33, miR397, and miR858, probably modulated the high Fe-caused root cell walls remodeling. These results suggest that high Fe enhances Cd accumulation in the aboveground tissues of P. cathayana by reconstructing the root cell walls, which is probably modulated by a regulatory network at both transcriptional and post-transcriptional levels.