«Previous Article|Table of Contents|Next Article»

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2013年19期

Page:

75-79

Research Field:

Publishing date:

Info

Title:

Effect of Plumbum Stress on Physiological Characteristics of Machilus yunnanensis Seedlings

Author(s):

JIANG Yong-lei; LU Hong-ding; HUANG Xiao-xia; DENG Li-lan

Faculty of Landscape Architecture，Southwest Forestry University，Kunming,Yunnan 650224

Keywords:

plumbum（Pb） stress; Machilus yunnanensis; chlorophyll fluorescence; physiological characteristics

PACS:

S 687.1

DOI:

-

Abstract:

Taking two-year old seedlings of Machilus yunnanensis as experiment material，the effect of some physiological and biochemical characteristics under three stress treatment groups control (CK)，5 mmol/L Pb(NO₃)₂，10 mmol/L Pb(NO₃)₂ were studied.The results showed that under the Pb²⁺ treatment，the initial fluorescence (F₀) increased，while the maximal photochemical efficiency of PSII (Fv/Fm) and the actual photochemical efficiency of PSII (Yield) decreased significantly in the low Pb²⁺concentration，which indicating the PSII of Machilus yunnanensis seedlings was damaged by Pb(NO₃)₂treatment，especially by the 5 mmol/L concentration of Pb(NO₃)₂ treatment.Furthermore，the contents of chlorophyll dropped and then increased as Pb²⁺ concentration raised continually.Soluble protein contents declined obviously，and significantly stimulated the increase of MDA content；moreover，these changes were more evident under the 10 mmol/L concentration treatment.On the other hand，the Pb²⁺stress promoted the POD activity and decreased the accumulation of praline significantly in low concentration of Pb²⁺，which suggested the Machilus yunnanensis seedlings could resist Pb²⁺stress by its antioxidative enzyme and osmotic regulation system.

References:

[1]张从.污染土壤生物修复技术[M].北京:中国环境科学出版社,2000:1-22.

[2]姜成,申晓慧,李春丰,等.凤仙花幼苗对重金属铅和锌的抗性研究[J].北方园艺,2012(20):53-55.

[3]Palavi S,Dubey R S.Lead toxicity in plants[J].Braz Plant Physiol,2005,17(1):35-52.

[4]林萍,普晓兰.滇润楠的组织培养及快速繁殖研究[J].园艺学报,2003,30(2):239-241.

[5]吴海波,涂璟.云南绿化树种滇润楠光合速率的研究[J].西南农业学报,2012,25(2):444-448.

[6]Hodges D M,Delong J M,Forney C F,et al.Improving the thiobarbituric acid-reactive substances assay for estimating lipid peroxidation in plant tissues containing anthocyanin and other interfering compounds[J].Planta，1999,207:604-611.

[7]Lin J,Wang G.Doubled CO₂ could improve the drought tolerance better in sensitive cultivars than in tolerant cultivars in spring wheat[J].Plant Science,2002,163:627-637.

[8]Giannopolitis C N，Ries S K.Superoxide dismutase in higher plants[J].Plant Physiology,1977,59:309-314.

[9]Bradford K J,Sharkey T D,Farquhar G D.Gas exchange,stomatal behavior,and δ13C values of the flacca tomato mutant in relation to abscisicacid[J].Plant Physiology,1983,72:245-250.

[10]Bates C J,Waldren R P,Teare I D.Rapid determination of free proline for water-stress studies[J].Plant Soil,1973,39:205-207.

[11]Inskeep W P,Bloom P R.Extinction oefficients of chlorophyll a and b in N,N-Dimethyl formamide and 80% acetone[J].Plant Physiology,1985,77:483-485.

[12]谷魏,施新固,杜开和,等.汞、镉复合污染对轮叶狐尾藻的毒害影响[J].南京师范大学学报(自然科学版),2001,24(3):75-79.

[13]俞慧娜,徐根娣,样卫韵,等.锰处理对大豆生理特性的影响[J].河南农业科学,2005(7):35-38.

[14]杨刚,伍钧,唐亚.铅胁迫下植物抗性机制的研究进展[J].西南民族大学学报(自然科学版),2006,32(6):1207-1209.

[15]Maxwell K,Johnson G N.Chlorophyll fluorescence-a practical guide[J].Journal of Experimental Botany,2000,51:659-668.

[16]钱永强,周晓星,韩蕾,等.Cd2+胁迫对银芽柳PSII叶绿素荧光光响应曲线的影响[J].生态学报,2011,20(31):6134-6142.

[17]钱永强,周晓星,韩蕾,等.3种柳树叶片PSII叶绿素荧光参数对Cd2+胁迫的光响应[J].北京林业大学学报,2011,33(6):8-14.

[18]韩张雄,李利,徐新文,等.NaCl胁迫对3种荒漠植物幼苗叶绿素荧光参数的影响[J].西北植物学报,2008,28(9):1843-1849.

[19]Qin T C,Wu Y S,Wang H X,et al.Effect of cadmium，lead and their interaction on the physiological and ecological characteristics of root system of Brassica chinensis[J].Acta Ecological Sincia,1998,18(3):320-325.

[20]Wang K B,Xu C H,Zhao F H,et al.The effects of water stress on some in vivo chlorophyll a fluorescence parameters of wheat flag leaves[J].Acta Biophysica Sinica,1997,13(2):273-278.

[21]Kupper H,Kupper F,Spiller M.Environmental relevance of heavy metal-substituted chlorophylls using the example of water plants[J].Exp Bot,1996,47:259-266.

[22]李海亮,赵庆芳,王秀春,等.兰州市大气污染对绿化植物生理特性的影响[J].西北师范大学学报(自然科学版),2005,41(1):55-60.

[23]陈怀宇,李裕红,韦炜,等.Pb2+对桐花幼苗抗氧化酶活性及脂质过氧化的影响[J].泉州师范学院学报(自然科学版),2006,24(2):94-99.

[24]Guo T R,Zhang G P,Zhou M X,et al.Effects of aluminum and cadmium toxicity on growth and antioxidant enzyme activities of two barley genotypes with different Al resistance[J].Plant Soil,2004,258:241-248.

[25]何冰,何计兴,何新华,等.铅胁迫对杨梅生理特性的影响[J].农业环境科学学报,2009,28(6):1263-1268.

[26]金琎,袁金萍.铅对小麦保护酶系统的影响[J].江苏农业科学,2007(2):225-232.

[27]彭志红,彭克勤,胡家金.渗透胁迫下植物脯氨酸积累的研究进展[J].中国农学通报,2002,18(4):80-83.

Memo

Memo:

-

Common functions

Last Update: 2014-08-26