Study on Photosynthetic Characteristics in Two Hosta Cultivars Under Heavy Metal Cr Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年13期

Page:

60-65

Research Field:

Publishing date:

Info

Title:

Study on Photosynthetic Characteristics in Two Hosta Cultivars Under Heavy Metal Cr Stress

Author(s):

GU Ai-bo¹; DONG Ran¹; MA Jia-yan²; ZHAO Rui-xue³

1.Jilin Agricultural Univercity,Changchun，Jilin 130118；

2.Jilin Province Gardening Specialty Management Station，Changchun，Jilin 130021；

3.ChangchunUniversity of Science and Technology，Changchun，Jilin 130022

Keywords:

heavy metal Cr; Hosta; chlorophyll; photosynthetic characteristics

PACS:

S 682.1

DOI:

-

Abstract:

Hosta×hybrida ‘So Sweet’ and Hosta ventricosa?as test materials，the CIRAS-type 2 photosynthetic apparatus was adopted，with the effects of heavy metal Cr (0，20，200，400 mg/kg) stress on Hosta×hybrida ‘So Sweet’ and Hosta ventricosa photosynthetic diurnal variation，light response curves and chlorophyll content were studied.The results showed that compared with CK,the content of chlorophyll a and b increased and the solar energy use efficiency and light adaptability were the strongest under the Cr 20 mg/kg stress.In the Cr 200 mg/kg and Cr 400 mg/kg stress，chlorophyll a and b content decreased and light response parameters decreased with the increasing concentration of Cr.In each set of concentration treatment，two kinds of ?Hosta net photosynthetic rate (Pn) showed the curve of ‘double-peak’ typical，had significant midday depression of photosynthesis phenomenon，net photosynthetic rate (Pn) was positively correlated with transpiration rate (Tr)，stomatal conductivity(Gs).It was negatively correlated with the intercellular CO₂ concentration (Ci).According to two kinds of Hosta chlorophyll and optical response parameters compared with CK under heavy metal Cr treatment，Hosta×hybrida ‘So Sweet’ ability was higher than Hosta ventricosa?in heavy metal detoxification and tolerance.

References:

[1]Shrivastava R,Upretip R K,Seth P K,et al.Effects of chromium on the immune system[J].FEMS Immunology and Medical Microbiology,2002,34:1-7.
[2]Bonet A,Poschenrieder C,Batcelo J.Chromium Ⅲ-iron interaction in efficient and Fe-sufficient bean plants:I.Growth and nutrient content[J].Plant Nutrition,1991,14:403-414. [3]Shaker A K,Cervantes C,Loza-tavera H,et al.Chromium toxicity in plants[J].Environment International,2005,31:739-753.
[4]陈俊,王敦球,张学洪,等.李氏禾修复重金属（Cr+Cu+Ni）污染水体的潜力研究[J].农业环境科学学报,2008,27(4):1514-1518.
[5]吴泽鑫,邢文听,高青环.土壤重金属Cr污染及其治理研究进展[J].河南化工,2011(28):33-36. [6]唐茜,冯德建,杨华.Cr³⁺和Cr⁶⁺胁迫对茶树生理生化特性的影响[J].茶叶科学,2009,29(4):301-308.
[7]董萌,赵运林,周小梅.土壤重金属污染的植物修复机理研究概述[J].湖南城市学院学报,2012,21(3):51-55.
[8]郑良永,林家丽,曹启民,等.污染土壤生物修复研究进展[J].广东农业科学,2006(4):97-99.
[9]贾洪革.玉簪品种的引种、栽培和组织培养[M].北京:中国科学院植物研究所,2000.
[10]Lichtenthaler H K.Chlorophylls and carotenoids-pigments of photosynthetic biomembranes[C].Colowick S P,et al,eds.Methods in Enzymology.San Diego,Academic Press,1987.
[11]Stobart A K,Grifiths W T,Ameen-bukhari I.The effects of Cd²⁺ on the biosynthesis of chlorophyll in leaves of barley[J].Plant Physiology,1985,63:293-298.
[12]王发林.温室内外杏、油桃的光合特性研究[D].兰州:兰州大学,2007.
[13]黄菁.山核桃属光合速率的测定[D].长沙:中南林业科技大学,2006.
[14]王爱云,黄姗姗.草本植物对铬污染的响应[J].西北农业学报,2010,19(7):164-167.
[15]乔琳,盛东风,邓艳.重金属铜、锌、铁、铅污染对白菜幼苗鲜重及叶绿素含量的影响[J].广东农业科学,2010(3):34-36.
[16]Stobart A K,Griffiths W T,Ameen-Bukhari I,et al.The effect of Cd²⁺ on the biosynthesis of chlorophyll in leaves of barley[J].Plant Physioll,1985,63:293-298.
[17]王红霞,施国新,徐勤松,等.Cr⁶⁺胁迫对槐叶苹叶片光合生理特征及超微结构的影响[J].西北植物学报,2008,28(11):2244-2250.
[18]Farquhar G D,Sharkey T D.Stomatal conductance and Photosynthesis[J].Annual Review of Plant Physiology and Plant Molecular Biology,1982,33:317-345.
[19]李金鹏,董然3种彩色叶玉簪光合日变化[J].东北林业大学学报,2011,39(10):56-58.

Memo

Memo:

-

Common functions