|Table of Contents|

Effects of Pb Stress on Accumulation Capacity and Physiological Metabolism of Murraya exotica L.

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年04
Page:
92-98
Research Field:
Publishing date:

Info

Title:
Effects of Pb Stress on Accumulation Capacity and Physiological Metabolism of Murraya exotica L.
Author(s):
ZHAO Yangdi
(Nanchong Vocational and Technical College,Nanchong,Sichuan 637131)
Keywords:
Pb stress; accumulation; transport coefficient
PACS:
-
DOI:
10.11937/bfyy.20182686
Abstract:
Taking Murraya exotica L. as material,a pot-experiment was conducted to investigate its biomass,physiological index and Pb accumulation characteristics under different Pb concentration（250,500,1 000,1 500,3 000 mg?kg-1）.The results demonstrated that when soil Pb concentration was 250 mg?kg-1,the biomass of roots,stems and leaves of Murraya exotica L. reached the peak value and the content of chlorophyll and Pro as well as the activities of SOD and CAT became significantly higher than those of the control group.When soil Pb concentration was over 250 mg?kg-1,all these indexes decreased respectively.When soil Pb concentration was 3 000 mg?kg-1,the biomass,the content of chlorophyll and Pro were the smallest,while the data varieties were not apparent.Nevertheless,in high Pb concentrations,the activities of SOD and CAT decreased in different degrees,but the data were still higher than those of the control group.On the other hand,the activities of POD raised with the increase of Pb concentration.Pb accumulation in roots,stems and leaves of Murraya exotica L. increased with the increase of Pb concentration in soil.The roots was the main part of Pb absorption.Under the series of Pb concentration treatments,the transport coefficient was less than 0.5 and the tolerance index was between 0.79-1.22.The results indicated that Murraya exotica  L. had a strong Pb tolerance and could survive in the soil polluted by high Pb concentration.But it was not Pb hyperaccumulation plant.It could be used to recover the vegetation and restore damaged ecosystem.

References:

[1]赵宇飞,沙文沛,任诗语,等.铅胁迫对小叶黄杨幼苗生理生化指标的影响[J].贵州农业科学,2014,42(9):68-71.[2]朱雅兰.重金属污染土壤植物修复的研究进展与应用[J].湖北农业科学,2010,49(6):1495-1499．[3]徐剑锋,王雷,熊瑛,等.土壤重金属污染强化植物修复技术研究进展[J].环境工程技术学报,2017,7(3):366-373.[4]陈玉梅,王思麒,罗言云.基于抗重金属铅、镉污染的城市道路绿化植物配置研究[J].北方园艺,2010(8):92-95.[5]国家环境保护局.土壤环境质量标准:GB15618-1995[S].北京:中国标准出版社,1995.[6]马学文,翁焕新,章金骏.中国城市污泥重金属和养分的区域特性及变化[J].中国环境科学,2011,31(8):1306-1313.[7]李合生,孙群,赵世杰.植物生理生化试验原理和技术[M].北京:高等教育出版社,2000.[8]杜连彩.铅污染上壤植物修复中螯合诱导技术的应用现状与前景[J].潍坊学院学报,2006,6(4):88-89.[9]聂发辉.关于超富集植物的新理解[J].生态环境,2005,14(1):136-138.[10]刘柿良,杨容孑,马明东,等.镉胁迫对白车轴草生长、镉含量及养分分配的影响[J].核农学报,2015,29(3):595-604.[11]赵杨迪,潘远智,刘碧英.玉竹对土壤Cd、Pb的吸收和耐性研究[J].农业环境科学学报,2010,29(11):2087-2093.[12]原海燕,郭智,黄苏珍.Pb污染对马蔺生长、体内重金属元素积累以及叶绿体超微结构的影响[J].生态学报,2011,31(12):3350-3357.[13]CHENG S.Effects of heavy metals on plants and resistance mechanisms[J].Environmental Science and Pollution Research,2003,10(4):256-264.[14]赵杨迪,潘远智,刘碧英,等.Cd、Pb单一及复合污染对花叶冷水花生长的影响及其积累特性研究[J].农业环境科学学报,2012,31(1):48-53.[15]杨明琰,梁语燕,曾德榜,等.铅胁迫对黑麦草Pb富集特性及生理代谢的影响[J].西北农林科技大学学报(自然科学版),2014(12):97-101.[16]田胜尼,刘登义,彭少麟,等.香根草和鹅观草对Cu、Pb、Zn及其复合重金属的耐性研究[J].生物学杂志,2004,21(3):15-19.[17]胡方洁,张健,杨万勤,等.Pb胁迫对红椿(Toona ciliata Roem)生长发育及Pb富集特性的影响[J].农业环境科学学报,2012,31(2):284-291.[18]徐劼,保积庆,于明革,等.植物对Pb的吸收转运机制研究进展[J].安徽农业科学,2012,40(36):17467-17470,17491.[19]STOBART A K,GRIFFITHS W T.The effect of Cd2+ on the biosynthesis of chlorophyll in leaves of barley[J].Physiological Plant,1985,63:293-298.[20]杨斌,张文辉,高建欣.5种速生柳无性系对Pb2+胁迫的生理抗性比较[J].西北植物学报,2015,35(6):1182-1189.[21]邱永祥,蔡南通,吴秋云,等.铅对叶菜用甘薯根系生长及植株光合作用的影响[J].浙江农业学报,2006,18(6):429-432.[22]贺靖舒,丁继军,潘远智.石竹(Dianthus chinensis)对土壤镉胁迫的生理生化响应[J].四川农业大学学报,2013,31(3):290-295,327.[23]赵志新,乔瑞芳,季孔庶.杂交鹅掌楸不同无性系对Pb胁迫的生理响应及抗性比较[J].植物资源与环境学报,2007,16(4):7-12.[24]CHEN M,ZHANG L L,LI J,et al.Bioaccumulation and tolerance characteristics of a submerged plant(Ceratophyllum demersum L.) exposed totoxic metal lead[J].Ecotoxicology and Environmental Safety,2015,122:313-321.[25]杨建伟,杜瑞卿,沙文沛,等.土壤Pb含量对杨树幼苗生理生长影响的综合因素分析[J].林业科学,2015,51(11):128-136.[26]TANYOLAC D,EKMEKCI Y,UNALAN S.Changes in photochemical and antioxidant enzyme activities in maize (Zea mays L.) leaves exposed to excess copper[J].Chemosphere,2007,67(1):89-98.[27]朱旭东,原海燕,黄苏珍,等.Pb胁迫对路易斯安那鸢尾幼苗生长和生理生化特性的影响[J].植物资源与环境学报,2014,23(4):62-67.[28]赵宇飞,沙文沛,任诗语,等.铅胁迫对小叶黄杨幼苗生理生化指标的影响[J].贵州农业科学,2014,42(9):68-71.

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Last Update: 2019-03-25