Growth, Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.) as Affected by Arbuscular Mycorrhizal Fungi

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	Growth, Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.) as Affected by Arbuscular Mycorrhizal Fungi
其他题名	Growth,Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.)as Affected by Arbuscular Mycorrhizal Fungi
	Liu LingZhi 1; Gong ZongQiang 2; Zhang YuLong 1; Li PeiJun 2
	2011
发表期刊	PEDOSPHERE
ISSN	1002-0160
卷号	21 期号:3 页码:319-327
摘要	A pot experiment was carried out to study the effects of three arbuscular mycorrhizal fungi (AMF), including Glomus intraradices, Glornus constricturn and Glomus mosseae, on the growth, root colonization and Cd accumulation of marigold (Tayetes erecta L.) at Cd addition levels of 0, 5 and 50 mg kg(-1) in soil. The physiological characteristics, such as chlorophyll content, soluble sugar content, soluble protein content and antioxidant enzyme activity, of Tagetes erecta L. were also investigated. The symbiotic relationship between the marigold plant and arbuscular mycorrhizal fungi was well established under Cd stress. The symbiotic relationship was reflected by the better physiobiochemical parameters of the marigold plants inoculated with the three AMF isolates where the colonization rates in the roots were between 34.3% and 88.8%. Compared with the non-inoculated marigold plants, the shoot and root biomass of the inoculated marigold plants increased by 15.2%-47.5% and 47.8%-130.1%, respectively, and the Cd concentration and accumulation decreased. The chlorophyll and soluble sugar contents in the mycorrhizal marigold plants increased with Cd addition, indicating that AMF inoculation helped the marigold plants to grow by resisting Cd stress. The antioxidant enzymes reacted differently with the three AMF under Cd stress. For plants inoculated with G. constrictum and G. rnosseae, the activities of superoxide dismutase (SOD) and catalase (CAT) increased with increasing Cd addition, but peroxidase (POD) activity decreased with increasing Cd addition. For plants inoculated with G. intraradices, three of the antioxidant enzyme activities were significantly decreased at high levels of Cd addition. Overall, the activities of the three antioxidant enzymes in the plants inoculated with AMF were higher than those of the plants without AMF inoculation under Cd stress. Our results support the view that antioxidant enzymes have a great influence on the biomass of plants, and AMF can improve the capability of reactive oxygen species (ROS) scavenging and reduce Cd concentration in plants to alleviate Tayetes erecta L. from Cd stress.
其他摘要	A pot experiment was carried out to study the effects of three arbuscular mycorrhizal fungi (AMF),including Glomus intraradices,Glomus constrictum and Glomus mosseae,on the growth,root colonization and Cd accumulation of marigold (Tagetes erecta L.)at Cd addition levels of 0,5 and 50 mg kg~(-1)in soil.The physiological characteristics,such as chlorophyll content,soluble sugar content,soluble protein content and antioxidant enzyme activity,of Tagetes erecta L.were also investigated.The symbiotic relationship between the marigold plant and arbuscular mycorrhizal fungi was well established under Cd stress.The symbiotic relationship was reflected by the better physiobiochemical parameters of the marigold plants inoculated with the three AMF isolates where the colonization rates in the roots were between 34.3% and 88.8%.Compared with the non-inoculated marigold plants,the shoot and root biomass of the inoculated marigold plants increased by 15.2%-47.5% and 47.8%-130.1%,respectively,and the Cd concentration and accumulation decreased.The chlorophyll and soluble sugar contents in the mycorrhizal marigold plants increased with Cd addition,indicating that AMF inoculation helped the marigold plants to grow by resisting Cd stress.The antioxidant enzymes reacted differently with the three AMF under Cd stress.For plants inoculated with G.constrictum and G.mosseae,the activities of superoxide dismutase (SOD)and catalase (CAT)increased with increasing Cd addition,but peroxidase (POD)activity decreased with increasing Cd addition.For plants inoculated with G.intraradices,three of the antioxidant enzyme activities were significantly decreased at high levels of Cd addition.Overall,the activities of the three antioxidant enzymes in the plants inoculated with AMF were higher than those of the plants without AMF inoculation under Cd stress.Our results support the view that antioxidant enzymes have a great influence on the biomass of plants,and AMF can improve the capability of reactive oxygen species (ROS)scavenging and reduce Cd concentration in plants to alleviate Tagetes erecta L.from Cd stress.
关键词	HEAVY-METAL UPTAKE ZEA-MAYS L. CALCAREOUS SOIL GLOMUS-MOSSEAE MEDICAGO-TRUNCATULA PHOSPHORUS STATUS ENZYME-ACTIVITIES OXIDATIVE STRESS MAIZE CD antioxidant enzyme Cd stress metal accumulation phytoremediation root colonization
收录类别	CSCD
语种	英语
资助项目	[Chinese Academy of Sciences] ; [National Natural Science Foundation of China] ; [National Public Welfare Project for Environmental Protection of China] ; [National Basic Research Program (973 Program) of China]
CSCD记录号	CSCD:4220794
引用统计	被引频次：10[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/156611
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.中国科学院
推荐引用方式 GB/T 7714	Liu LingZhi,Gong ZongQiang,Zhang YuLong,et al. Growth, Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.) as Affected by Arbuscular Mycorrhizal Fungi[J]. PEDOSPHERE,2011,21(3):319-327.
APA	Liu LingZhi,Gong ZongQiang,Zhang YuLong,&Li PeiJun.(2011).Growth, Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.) as Affected by Arbuscular Mycorrhizal Fungi.PEDOSPHERE,21(3),319-327.
MLA	Liu LingZhi,et al."Growth, Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.) as Affected by Arbuscular Mycorrhizal Fungi".PEDOSPHERE 21.3(2011):319-327.