Effect of Cadmium Ions on Photosynthetic Structure and Its Functions of Tea Leaves

SU Jin-wei; WANG Xiang-Ping

doi:10.13305/j.cnki.jts.2004.01.013

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Journal of Tea Science ›› 2004, Vol. 24 ›› Issue (1) : 65-69. DOI: 10.13305/j.cnki.jts.2004.01.013

Effect of Cadmium Ions on Photosynthetic Structure and Its Functions of Tea Leaves

SU Jin-wei¹, WANG Xiang-Ping²

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Abstract

Tea plant was cultivated in Hoagland nutrient solution containing 0.5βmmol/L Cd²⁺ for 8 days. Tea leaves lost their green color gradually with the change in the ultrastructure of the chloroplast . At the early stage, there was a slight decrease in the number of granum thylakoids. Then, the thylakoids piled up loosely, and chloroplasts rounded off to different extents. At the late stage , the structure of the chloroplast related to thylakoid became unclear, while the thylakoid system was disintegrated abnormally with a few single bent and swell thylakoids, and some ruptured envelope of chloroplast. Cadmium ions significantly inhibited the photosynthesis activity and led to the decline in the chlorophyll content and chlorophyll a/b ratio. Further more the photochemical efficiency of PSII（Fv/Fm）and the potential activity of PSII（Fv/Fo）decreased in different degrees with increasing Cd²⁺stress . The pollution duration resulted in the damage of photosynthetic structure in tea leaf cells.

Key words

Camellia sinensis / Cadmium ions / Chlorephyll fluorescence kinetics / Photosynthesis / Ultrastructure

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SU Jin-wei, WANG Xiang-Ping. Effect of Cadmium Ions on Photosynthetic Structure and Its Functions of Tea Leaves[J]. Journal of Tea Science. 2004, 24(1): 65-69 https://doi.org/10.13305/j.cnki.jts.2004.01.013

References

[1] Lagriffoul A, Mocquot B, Mench M and Vangronsveld J. Cadmium toxicity effects on growth, mineral and chlorophyll contents, and activities of stress related enzymes in young maize plant(Zeea mays L)[J]. Plant and Soil 1998, 20: 241~250.
[2] 李大辉,施国新, 丁小余,等. Cd²+、Hg²+对菱幼苗生长及其超氧化物歧化酶活性的影响[J]. 武汉植物学研究,1999, 3:206~210.
[3] 秦天才,阮捷, 王腊娇. 镉对光合作用的影响[J]. 环境科学与技术, 2000,增刊:33~35.
[4] 苏金为, 王湘平. 镉诱导的茶苗膜脂过氧化和细胞程序性死亡[J]. 植物生理与分子生物学报,2002, 28(4):292~298.
[5] Arnon D I.Copper enzymes in isolated chloroplasts polyphenoloxidase in Beta valgaris[J]. Plant Physiol, 1949, 24: 1-15 .
[6] 叶济宇,李德耀. 植物生理学实验手册[M]. 上海:上海科学技术出版社,1985:100~104.
[7] 李功潘, 蔡琬平,吴亚君,等. 叶绿体结构状态与光化学活性的关系[J]. 植物生理学报,1987, 3: 295~301.
[8] 钱露平,叶济宇. 类囊体膜的垛叠、松散与它的功能关系[J]. 植物生理学报,1985, 4:344~350.
[9] 黄玉山, 罗广华, 关棨文. 镉诱导植物的自由基过氧化损伤[J]. 植物学报, 1997, 6: 522~526.
[10] Krause G H.Chlorophlly fluorescence and photosynthesis[J]. The Basics Ann Rev. Plant Physiol Plant Mol Biol, 1991, 42: 313~349.
[11] 林世清,许春辉,张其德, 等. 叶绿素荧光动力学在植物抗性生理学,生态学和农业现代化中的作用[J]. 植物学通报,1992, 9(1)1~16.
[12] 杨居荣,贺建群,张国祥,等. 农作物对Cd毒害的耐性机理探讨[J]. 应用生态学报,1995,1:87~91.
[13] 郭书奎,赵可夫. NaCl胁迫抑制玉米幼苗光合作用的可能机理[J].植物生理学报,2001, 6:461~466.
[14] 左宝玉,李国清,唐崇钦,等. 莲子在光下萌发过程中的类囊体膜垛叠和Chla/Chlb值的变化[J]. 植物学报. 1992, 9: 645~650.