您好，欢迎访问海南省农业科学院 机构知识库！
海南省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Downregulation of the photosynthetic machinery and carbon storage signaling pathways mediate La2O3 nanoparticle toxicity on radish taproot formation

文献类型： 外文期刊

作者： Xiao, Zhenggao 1 ; Yue, Le 1 ; Wang, Chuanxi 1 ; Chen, Feiran 1 ; Ding, Ying 1 ; Liu, Yinglin 1 ; Cao, Xuesong 1 ; Chen, 1 ;

作者机构： 1.Jiangnan Univ, Inst Environm Proc & Pollut Control, Wuxi 214122, Jiangsu, Peoples R China

2.Jiangnan Univ, Sch Environm & Civil Engn, Wuxi 214122, Jiangsu, Peoples R China

3.Hainan Acad Agr Sci, Inst Trop Fruit Trees, Haikou 571100, Hainan, Peoples R China

4.Univ Neuchatel, Inst Biol, Rue Emile Argand 11, CH-2000 Neuchatel, Switzerland

关键词： Lanthanum oxide nanoparticles; Nanotoxicity; Cell wall composition; Root cracking; Transcriptome

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：9.038； 五年影响因子：8.512 ）

ISSN： 0304-3894

年卷期： 2021 年 411 卷

页码：

收录情况： SCI

摘要： The molecular and physiological mechanisms of how rare earth oxide nanoparticles (NPs) alter radish (Raphanus sativus L.) taproot formation and cracking were investigated in the present study. We compared plants that received suspensions of 10, 50, 100, 300 mg L-1 of La2O3 NPs, 300 m L-1 La2O3 bulk-particles (BPs), 0.8 m L-1 La3+, or only water for six days during their tuber formation period. 100 and 300 mg L-1 La2O3 NPs exposure decreased storage root biomass by 38% and 60%, respectively, and they both induced visible root cracking. Physiological analyses showed that La2O3 NPs exposure (>100 mg L-1) significantly inhibited leaf net photosynthetic rate, cell wall pectin synthesis of both storage root epidermis and xylem parenchyma tissues, but increased the contents of cellulose and hemicellulose 1 in root epidermis cell walls. Moreover, transcriptome analysis further found that La2O3 NPs changed root cell wall structure by down-regulating core genes involved in cell wall pectin and IAA biosynthesis, which coincided with the observed La2O3 NPs-induced root cracking. Our results revealed the molecular mechanisms related to cell wall carbohydrate metabolism in response to NPs stress, providing a step forward for understanding the causes of NPs phytotoxicity on edible plant taproot formation and cracking.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：海南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台