期刊论文

Effects of Delftia sp. B9 on rice seed germination and cadmium accumulation in rice seedlings under Cd stress

中文

农业环境科学学报

1672-2043

2019

38

8

1855-1863

10.11654/jaes.2019-0261

The National Key R&D Program of China(2017YFD0801505)

本校为第一机构

为探讨耐镉细菌Delftia sp. B9对镉(Cd)胁迫下水稻种子萌发及幼苗吸收积累Cd的影响,以两种水稻(华润2号、深两优5814)为材料,研究水稻在3种Cd胁迫浓度(0、0.01、0.1 mg·L~(-1))下添加Delftia sp. B9菌液对水稻幼苗生长和积累Cd的影响。结果表明:Cd胁迫浓度为0.1 mg·L~(-1)时,Delftia sp. B9产吲哚乙酸(IAA)能力与对照相比显著减少2.87 mg·L~(-1),产铁载体相对含量下降17.34%。Cd胁迫浓度为0.1 mg·L~(-1)时,添加Delftia sp. B9菌液对水稻种子萌发和耐性系数有显著的促进作用。Cd胁迫下添加Delftia sp. B9菌液的处理(T3)与对照(T1)相比能显著增加两种水稻幼苗的根长、株高、叶绿素a和叶绿素b含...

To explore the effects of Delftia sp. B9 strain on seed germination and Cd accumulation in rice seedlings, three different levels of Cd stress (0, 0.01, and 0.1 mg·L-1) were applied to two rice varieties (Huarun No. 2 and Shenliangyou No. 5814) following inoculation of Delftia sp. B9 strain. The results showed that Delftia sp. B9 produced 2.87 mg·L-1 less indoleacetic acid under 0.1 mg·L-1 Cd stress, whereas the siderophore production decreased by 17.34%, accordingly. The addition of Delftia sp. B9 had a significant role in promoting rice se...