期刊论文

Effect of Bacillus sp.T3on Growth,Physiology and Rhizosphere Microorganisms of Artemisia selengensis under Cadmium Stress

中文

西北植物学报

1000-4025

2016

36

10

2030-2037

10.7606/j.issn.1000-4025.2016.10.2030

2015JJ4012:湖南省自然科学基金 2016JJ4015:湖南省自然科学基金 15B045:湖南省教育厅优秀青年项目

本校为第一机构

为探讨镉(Cd)胁迫条件下蒌蒿对促生细菌(PGPB)的响应机制,以芽孢杆菌T3(Bacillus sp.)菌株为对象,通过盆栽试验,研究不同Cd处理水平下芽孢杆菌T3菌株对蒌蒿生长、生理、Cd富集转运以及根际微生物的影响。结果表明:(1)在Cd胁迫条件下,芽孢杆菌T3菌株可显著促进蒌蒿地上部、地下部及总干物质的积累,但对株高和根冠比的影响不明显。(2)芽孢杆菌T3菌株能显著促进Cd胁迫条件下蒌蒿对Cd的富集与转运,相比单一Cd胁迫,蒌蒿地上部生物富集系数(BCF)增加了8.3%~29.3%,地下部BCF减少了6.6%~11.1%,同时转运系数(TF)增加了20.8%~38.3%。(3)在Cd胁迫和芽孢杆菌T3菌株的共同作用下,蒌蒿叶绿素a、叶绿素b和总叶绿...

To explore response mechanism of Artemisia selengensis on plant growth-promoting bacteria （PGPB） under cadmium stress, this study examined the effects of strain T3 on growth, physiology charac- teristics, cadmium concentration and translocation and rhizosphere microorganisms of A. selengensis under different concentrations of cadmium by pot experiment. The results indicated that （1） Bacillus sp. T3 could distinctly promote the accumulation of shoot, root and total dry weight, but had no significant differ ence in plant height and root-shoot...