[1]汪凤林,马志慧,叶义全,等. 缺镁对杉木根系活力及抗氧化酶活性影响研究[J].西北林学院学报,2018,33(2):16-19.[doi:10.3969/j.issn.1001-7461.2018.02.03]
　WANG Feng-lin,MA Zhi-hui,YE Yi-quan,et al. Physiological Responses of Cunninghamia lanceolata Roots to Magnesium Deficiency[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(2):16-19.[doi:10.3969/j.issn.1001-7461.2018.02.03]
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 缺镁对杉木根系活力及抗氧化酶活性影响研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第2期
页码:
16-19
栏目:
出版日期:
2018-03-31

文章信息/Info

Title:
 Physiological Responses of Cunninghamia lanceolata Roots to Magnesium Deficiency
文章编号:
1001-7461(2018)02-0016-04
作者:
 汪凤林1; 2; 马志慧2; 3; 叶义全1; 2; 黄田盛1; 2; 王飞2; 3; 曹光球1; 2*
 （1.福建农林大学 林学院，福建 福州 350002；2.国家林业局 杉木工程技术研究中心，福建 福州 350002；3.福建农林大学 资源与环境学院，福建 福州 350002）
Author(s):
 WANG Feng-lin1; 2; MA Zhi-hui2; 3; YE Yi-quan1; 2; HUANG Tian-sheng1; 2; WANG Fei2; 3; CAO Guang-qiu1; 2*
 （1.Forestry College,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China；2 Chinese Fir Engineering Technology Research Center,State Forestry Administration,Fuzhou,Fujian 350002,China；3.College of Resource and Environmental Science,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China）
关键词:
 ; 缺镁; 杉木根系; 根系活力; MDA含量; 酶活性
Keywords:
Cunninghamia lanceolata root;  root activity;  MDA content;  enzyme activity
分类号:
S791.27
DOI:
10.3969/j.issn.1001-7461.2018.02.03
文献标志码:
A
摘要:
 以1年生无性系020杉木幼苗为试验材料，采用营养液浇灌的方法研究缺镁处理对杉木根系的根系活力（TTC）、丙二醛（MDA）含量和保护酶活性的影响。结果表明，与正常供镁相比，缺镁处理下杉木根系的TTC降低了34.73%；MDA含量和超氧化物歧化酶（SOD）活性则相对较低，分别降低了1.32%和13.63%，其中SOD活性表现出显著的差异性（P<0.05）；过氧化氢酶（CAT）活性、过氧化物酶（POD）活性和多酚氧化酶（PPO）活性在缺镁处理下则表现出较高的酶活性，分别高出了53.02%、0.35%和22.88%；缺镁破坏了根系中几种抗氧化酶和保护酶之间的协调和平衡，使得根系内自由基的平衡被打破，进而影响根系活力，破坏养分的吸收和转化。
Abstract:
 Effects of magnesium deficiency on root activity (TTC),malondialdehyde (MDA) content and protective enzyme activities in roots of one-year-old seedlings of Cunninghamia lanceolata were studied by nutrient solution irrigation.The results showed that compared with the normal magnesium,the TTC of the roots decreased by 34.73% while the content of MDA and superoxide dismutase (SOD) activities were relatively low,reduced by 1.32% and 13.63%,respectively,among them,SOD activity showed significant difference（P<0.05）,catalase (CAT) activity,peroxidase (POD) activity and polyphenol oxidase (PPO) activity showed a higher enzyme activity under magnesium deficiency,increased by 53.02%,0.35% and 22.88%,respectively.The lack of magnesium destroys the coordination and balance between several antioxidant enzymes and protective enzymes in root system,which breaks the balance of free radical in root system,and then affects the activity of root system and destroys nutrient absorption and transformation.

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备注/Memo

备注/Memo:
 收稿日期：2017-08-26修回日期：2017-10-18
基金项目：国家重点研发计划项目（2016YFD0600301）；福建农林大学科技创新专项基金（KFA17071A）。
作者简介：汪凤林，女，在读硕士，研究方向：自然资源管理。E-mail：975753574@qq.com
*通信作者：曹光球，男，副研究员，博士，研究方向：森林培育理论与技术。E-mail：cncgq@126.com
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