[1]吴朝波,郭建春,符少萍,等.海雀稗对镉胁迫的生理响应及积累特性[J].江苏农业学报,2015,(06):1337-1343.[doi:doi:10.3969/j.issn.1000-4440.2015.06.022]
 WU Chao-bo,GUO Jian-chun,FU Shao-ping,et al.Physiological responses of Paspalum vaginatum Sw. to Cd stress and its Cd accumulation[J].,2015,(06):1337-1343.[doi:doi:10.3969/j.issn.1000-4440.2015.06.022]
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海雀稗对镉胁迫的生理响应及积累特性()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年06期
页码:
1337-1343
栏目:
耕作栽培·资源环境
出版日期:
2015-12-31

文章信息/Info

Title:
Physiological responses of Paspalum vaginatum Sw. to Cd stress and its Cd accumulation
作者:
吴朝波12郭建春1符少萍1刘娇1李瑞梅1王蕾13段瑞军1
(1.中国热带农业科学院/热带生物技术研究所,海南海口571101;2.海南大学农学院,海南海口571101;3.海南大学园林园艺学院,海南海口570228)
Author(s):
WU Chao-bo12GUO Jian-chun1FU Shao-ping1LIU Jiao1LI Rui-mei1WANG Lei13DUAN Rui-jun1
(1.Institute of Tropical Bioscience and Biotechnology,China Academy of Tropical Agricultural Science, Haikou 571101, China;2.College of Agriculture, Hainan university, Haikou 571101, China;3.College of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, China.)
关键词:
海雀稗镉胁迫MDASODCAT根系活力
Keywords:
Paspalum vaginatum Sw.Cd stressMDASODCATroot vigor
分类号:
Q945.78; X173
DOI:
doi:10.3969/j.issn.1000-4440.2015.06.022
文献标志码:
A
摘要:
为研究海雀稗对镉胁迫的生理响应及其镉积累特性,本研究采用土培法对海雀稗进行镉胁迫,探究了不同镉浓度对海雀稗生长、根系活力、叶片膜透性、膜脂过氧化、保护酶活性以及镉积累的影响。结果表明:镉浓度>50.00 mg/kg时,随镉浓度增加,CAT活性显著下降,SOD与CAT的协同作用降低,MDA大量积累和根活力下降,植物生长受到抑制;镉浓度为 050.00 mg/kg时,海雀稗根系活力未显著下降,保护酶活性(SOD、CAT)增强,MDA积累量和细胞膜透性未明显增加,植物受镉毒害较小。海雀稗根系对镉具有极强的富集能力,镉浓度为200.00 mg/kg时,其地上部分和地下部分镉含量分别为39.15 mg/kg和1 097.38 mg/kg。说明海雀稗对镉胁迫(0~50.00 mg/kg)能做出有效反应,并正常生长,可以作为修复土壤镉污染的备选种植植物。
Abstract:
The physiological response and characteristics of Cd accumulation in Paspalum vaginatum Sw to Cd stress were studied by investigating the effect of Cd concentration on the growth, root vigor, leaf membrane permeability, membrane lipid peroxidation, protective enzyme activity and Cd accumulation. When Cd was over 50.00 mg/kg, the higher the concentration, the lower the activity of CAT, and the weaker the synergistic effect of SOD and CAT. Besides, MDA accumulation increased and root vigor decreased in response to Cd stress, which led to inhibited plant growth. When the Cd was in 0-50.00 mg/kg, root vigor didnt drop obviously, the protective enzymes activityies (SOD and CAT) were enhanced, and MDA accumulation and cell membrane permeability werent increased significantly, which all contributed to the lighter Cd damage. Roots of P. vaginatum Sw. showed strong enrichment of Cd. When Cd was up to 200.00 mg/kg, Cd content reached 1 097.38 mg/kg in the underground part. P. vaginatum Sw. can be planted as a candidate material to remediate Cd-contaminated (0-50.00 mg/kg) soil.

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备注/Memo

备注/Memo:
收稿日期:2015-09-10 基金项目:中央公益性科研院所基本科研业务专项基金项目(ITBB2015ZD03);海南省重大科技专项(ZDZX2013023-1);中央公益性科研究所(院本级)基本科研业务专项基金项目(1630052015038) 作者简介:吴朝波(1988-),男,四川省会东人,硕士研究生,主要从事热带植物种质资源的研究。(Tel)15150554151;(E-mail)wuchao_bo@126.com 通讯作者:段瑞军,(Tel)13648614000;(E-mail)lshjz6@163.com
更新日期/Last Update: 2015-12-31