您好，欢迎访问安徽省农业科学院 机构知识库！

Variations in pH significantly affect cadmium uptake in grafted muskmelon (Cucumis melo L.) plants and drive the diversity of bacterial communities in a seedling substrate

文献类型： 外文期刊

作者： Zhang, Jian 1 ; Tian, Hongmei 1 ; Wang, Pengcheng 1 ; Xiao, Qingqing 3 ; Zhu, Shoujing 4 ; Jian, Haikun 1 ;

作者机构： 1.Anhui Acad Agr Sci, Inst Hort, Hefei 230031, Anhui, Peoples R China

2.Key Lab Genet Improvement & Ecophysiol Hort Crops, Hefei 230601, Anhui, Peoples R China

3.Hefei Univ, Dept Biol & Environm Engn, Hefei 230601, Anhui, Peoples R China

4.Yichun Univ, Coll Life Sci & Resources & Environm, Yichun 336000, Jiangxi, Peoples R China

5.Anhui Agr Univ, Sch Hort, Hefei 230036, Anhui, Peoples R China

关键词： Bacterial structure; Cadmium adsorption; Grafting; Growing substrate; pH level

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN： 0981-9428

年卷期： 2019 年 139 卷

页码：

收录情况： SCI

摘要： Substrates are fundamental prerequisites for growing grafted seedlings. In this study, substrates with different pH levels (5.0, 5.5, 6.0, 6.5, 7.0, and 8.0) were set up to elucidate the effect of pH on cadmium (Cd) uptake in grafted muskmelon (Cucumis melo L.) plants. Bacterial diversity was also investigated. Results showed that pH and high Cd concentration greatly affected the growth of grafted plants. The chlorophyll content of the muskmelon leaves decreased at 100 mu M Cd. The majority of the Cd ions accumulated in the rootstock rather than in the shoot tissue in all of the treatments. The shoots and roots showed the highest Cd content at pH 5.5 and the lowest Cd content at pH 8.0 regardless of the Cd concentration. The operational taxonomic units belonging to Proteobacteria and Bacteroidetes were significantly (p < 0.05) enriched at different substrate pH levels compared with those at pH 5.0. The operational taxonomic units belonging to the phyla Firmicutes, Acidobacteria, and Chloroflexi were significantly decreased The available nitrogen, phosphorus, Cd, and pH were strongly linked to bacterial community compositions. On the contrary, the available potassium was weakly correlated with the bacterial structure. This study demonstrates that pH greatly affects Cd uptake in grafted muskmelon plants and predicts microbial community structures in breeding substrates with different pH levels. Our results suggest that Cd accumulation in grafted plants can be reduced by setting the appropriate substrate pH. This work can serve as a reference for growing high-quality grafted plants and ensuring food safety in the presence of Cd contamination.

  • 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：安徽省农业科学院

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