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当前位置: 首页 > 文章 > 砷胁迫条件下接种丛枝菌根真菌对番茄生长和磷吸收的影响 中国土壤与肥料 2015 (5) 108-115
Position: Home > Articles > Influence of arbuscular mycorrhizal fungi(AMF) on growth and phosphorus uptake of tomato during the whole growing stage under As-stress condition Soil and Fertilizer Sciences in China 2015 (5) 108-115

砷胁迫条件下接种丛枝菌根真菌对番茄生长和磷吸收的影响

作  者：
胡义钰;孙亮;袁坤;王真辉
单  位：
中国热带农业科学院橡胶研究所农业部橡胶树生物学与遗传资源利用重点实验室
关键词：
番茄;丛枝菌根真菌;砷胁迫;磷含量;磷吸收
摘  要：
采用盆栽法研究了砷(As)污染条件下(As 0,50,100和200 mg·kg-14个水平)丛枝菌根真菌(AMF)接种对全生育期番茄植株生长及其磷(P)营养的影响。试验中各接种处理均成功侵染,侵染率在11.79%~34.36%之间。砷胁迫显著影响番茄植株的生物量,植株生长过程中各个时期地上部和根系干重均随As添加水平的升高而显著下降。本试验同时发现As 50 mg·kg-1是不接种番茄植株忍受砷毒害的上限,而接种丛枝菌根真菌后,番茄忍受砷毒害的上限上调到100 mg·kg-1;但200 mg·kg-1已达番茄忍受砷毒害的极限。基质中添加砷对番茄植株不同生长时期地上部和根部磷含量有显著影响。除开花期地上部与其不接种处理根部磷含量外,幼苗期和坐果期植株地上部磷含量与根部磷含量均随着砷添加量的增加而呈大致递增趋势。番茄植株生长的各个时期(幼苗期、开花期和坐果期)地上部和根部磷吸收量随砷添加水平的增加呈明显下降趋势。砷污染条件下,接种丛枝菌根在一定程度上促进了植株生长及其对磷的吸收,缓解了砷对植株生长的胁迫。
译  名：
Influence of arbuscular mycorrhizal fungi(AMF) on growth and phosphorus uptake of tomato during the whole growing stage under As-stress condition
作  者：
HU Yi-yu;SUN Liang;YUAN Kun;WANG Zhen-hui;Rubber Research Institute,Key Laboratory of Biology and Genetic Resources of Rubber Tree,Ministry of Agriculture;
关键词：
tomato;;AMF;;As-stress;;P content;;P uptake
摘  要：
A pot culture experiment was conducted to assess the effects on growth and phosphorus uptake of tomato plants inoculated with or without AMF species Glomus mosseae in the soil amended with four different levels of arsenic at As 0,50,100 and 200 mg·kg- 1during the whole growing stage. The results showed that all the inoculation treatments were successful infected by AMF,and the infection rate was among 11. 79% ~ 34. 36%. The As-stress had significant impact on the biomass,the dry weight of shoots and roots were significantly decreased with the addition of As at different stages of plant growth. Without AMF the As tolerance upper limit of tomato was As 50 mg·kg- 1,however the value ascended to As 100 mg·kg- 1after mycorrhizal inoculation,and 200 mg·kg- 1AMF was the utmost for tomato's tolerance. The amended of As had a significant impact on phosphorus content of shoots and roots. In addition to antheis shoots and its uninoculated treatments roots,the phosphorus content of shoots and roots at seeding and fruting stages showed roughly increasing trend with the increase of As level.The uptake of P at different stages of plant growth( seedling,anthesis and fruiting stages) decreased significantly with the increase of As level. Mycorrhizal inoculation in a certain degree promoted the growth of plant and depressed the As-stress.

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