您好，欢迎访问黑龙江省农业科学院 机构知识库！
黑龙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Cadmium contamination impairs alkaline tolerance in sugar beet by inhibiting carbon fixation and tryptophan metabolism

文献类型： 外文期刊

作者： Gai, Zhijia 2 ; Ye, Shuo 1 ; Zhou, Xinrui 1 ; Tang, Fawei 1 ; Qu, Ruixin 1 ; Wang, Zhiwei 1 ; Hu, Xu 1 ; Liu, Yang 1 ; Li, Donglin 1 ; Yang, Kepan 5 ; Zhang, Pengfei 4 ; Li, Xiangnan 3 ; Liu, Lei 1 ;

作者机构： 1.Jilin Agr Univ, Coll Resources & Environm, Key Lab Saline Alkali Soil Improvement & Utilizat, Minist Agr & Rural Affairs, Changchun 130118, Peoples R China

2.Heilongjiang Acad Agr Sci, Jiamusi Branch, Jiamusi 154007, Peoples R China

3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, State Key Lab Black Soils Conservat & Utilizat, Changchun 130102, Peoples R China

4.Northeast Agr Univ, Coll Agr, Harbin 150030, Peoples R China

5.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, Guangzhou 510650, Peoples R China

6.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Eco, South China Bot Garden, Guangzhou 510650, Peoples R China

关键词： Alkaline; Cadmium; Carbohydrate metabolism; Combined stresses; Melatonin

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）

ISSN： 0981-9428

年卷期： 2025 年 223 卷

页码：

收录情况： SCI

摘要： The contamination of cadmium (Cd) may overlap with alkali stress, exerting a synergistic effect on crop growth. This study examined the morphological and physiological responses of sugar beet seedlings irrigated with Cd solution (50 mM CdCl2) to alkali stress (400 mM NaHCO3). Under alkali stress, the presence of Cd exacerbated the reduction in plant growth, the maximum quantum yield of photosystem II (Fv/Fm), chlorophyll content, and osmoregulatory substances (proline, soluble sugars). Cd augmented the concentration of MDA, O2 & sdot;-, and H2O2, while reducing the expression of BvPOX. Concurrently, glutathione content, ascorbate peroxidase (APX) activity, and the glutathione transferase gene (BvGST) expression were also inhibited by Cd. Cd constrained the ribulose5P content under alkali stress and the expression of the glyceraldehyde-3-phosphate dehydrogenase gene (BvGAPDH), thereby inhibiting the Calvin cycle. Additionally, the expression of the alcohol dehydrogenase gene (BvADH) was reduced, leading to decreased sucrose and starch content. Cd also accelerated pectin metabolism. Furthermore, Cd inhibited the expression of key genes involved in melatonin synthesis (aromatic-L-amino-acid/ L-tryptophan decarboxylase gene, BvDDC/BvTDC and acetylserotonin O-methyltransferase gene, BvASMT), resulting in restricted tryptophan metabolism. This study provides insights into the inhibition of carbon fixation and tryptophan metabolism induced by Cd, its effects on the growth of beets under alkaline stress conditions.

  • 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：黑龙江省农业科学院

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