检索结果-南通市图书馆

Leaf developmental stability of platanus acerifolia under urban environmental stress and its implication as an environmental indicator

引用

Frontiers in Biology 2006年第4期1卷 411-417页

作者： ZHANG Hao WANG Xiangrong Department of Environmental Science and Engineering Fudan UniversityShanghai 200433China

The developmental stability indices,leaf width based fluctuating asymmetry(FA1),and lateral vein length based directional asymmetry(RDA1)of platanus acerifolia were *** the leaves were sampled from 14 sites that were categorized based on different urban environmental stress levels(UESL)in Shanghai metropolitan,***,foliar stomatal density and stomatal length were also studied as the subsidiary indices to test the availability of developmental stability indices as the indicator under a stressful *** showed seasonal variation of FA1 and RDA1 existed among the 14 sites,but the data showed significant negative correlation between FA1 and UESL(FA1=0.029−0.0009UESL+0.0003UESL2,r=0.7665,P=0.0014).However,a similar trend was not found between RDA1 and ***,the significant correlation among FA1 and leaf stomatal length and stomatal density implied they could be used as indicators of urban stress levels on a small *** seemed that RDA1 was possibly a normal parameter during leaf development but it was unavailable for use as an indicator of urban stresses.

关键词： Shanghai platanus acerifolia developmental stability urban environmental stresses

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Adventitious shoot regeneration of platanus acerifolia Willd. facilitated by Timentin,an antibiotic for suppression of Agrobacterium tumefaciens in genetic transformation

引用

Forestry Studies in China 2007年第1期9卷 14-18页

作者： Li Zhi-neng Liu Guo-feng Fang Fang Bao Man-zhu Key Laboratory of Horticultural Plant Biology Ministry of Education College of Horticulture and Forestry Sciences Huazhong Agricultural University Wuhan 430070 P. R. China

The effects of Timentin and cefotaxime （Cef） on shoot regeneration of the London plane tree （platanus acerifolia Willd.） and their use for the suppression ofAgrobacterium tumefaciens in Agrobacterium-mediated genetic transformation were compared. Shoot regeneration was significantly reduced on the media with Cef at concentrations from 100 to 500 mg·L^-1. Timentin showed negative effect on plant regeneration at concentrations of 100 and 500 mg·L^-1; however, 300 mg·L^-1 Timentin was shown to facilitate shoot regeneration significantly and the regeneration frequency increased from 64% （control） to 88%. Effective suppression of A. tumefaciens could be obtained with 500 mg·L^-1 Cef, but plant regeneration was completely inhibited at this level. The A. tumefaciens on infected P. acerifolia leaf tissues was visually undetectable after three subcultures on a medium with 300 mg·L^-1 Timentin. Considering the effect of Cef and Timentin on plant regeneration and suppression of Agrobacteria, Timentin at 300 mg·L^-1 is the preferred application in .4. tumefaciens-mediated transformation ofP acerifolia.

关键词： platanus acerifolia Agrobacterium tumefaciens leaf explant plant regeneration genetic transformation antibiotic,Timentin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：