UV-B对两种藻光合色素和多糖含量的影响

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (346 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要

本文研究了微绿球藻(Nanochloropsis sp.)和海洋原甲藻(Prorocentrum micans)在不同辐射强度的UV-B照射下的光合色素和多糖含量的变化,结果表明微绿球藻比原甲藻有更强的抗紫外辐射能力.它的叶绿素a含量在UV照射下保持相对稳定,而原甲藻的叶绿素a含量明显下降.同时发现微绿球藻中的类胡萝卜素含量有十分显著的上升,由于类胡萝卜素具有保护功能,因此它很可能保护了叶绿素a免遭破坏,从而在微绿球藻的抗紫外辐射中起到重要作用.另外,紫外处理也促进了微绿球藻中多糖含量的升高,这也有利于提高它的抗UV能力,多糖可能作为一种保护机制,对保护藻类防止UV伤害方面有一定功能.原甲藻则因为这些机能较弱,对UV的抗性较低.

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	黎峥
	段舜山
	武宝玕

关键词 ： UV-B辐射, 类胡萝卜素, 叶绿素a, 多糖

Abstract：

The effects of different intensity of UV-B irradiation enhancement on photosynthetic pigments (cholophyll a and carotenoids) and polysacchride content were studied in Nanochloropsis sp. and Prorocentrum micans. Results proved that Nanochloropsis sp. is higher in UV resistance than Prorocentrum micans. Chla content in Nanochloropsis sp. mantained stable relatively during UV-B treatment, while Chla content in Prorocentrum micans decreased obviously. On the other hand, the lower dosage of UV-B induced a marked increase in carotenoids content for Nanochloropsis sp., which may protect Chla from damage, hence played an important role for Nanochloropsis sp. in resisting of UV-B enhancement. Moreover, polysaccharide content in Nanochloropsis sp. increased during UV-B treatment. It indicated that polysaccharide may have some functions against UV-B. Prorocentrum micans showed more sensitive to UV-B enhancement, consistent with its weaker functions.

Key words： UV-B irradiation carotenoids chlorophylla polysaccharide

收稿日期: 2003-02-25

Q175

引用本文:

黎峥, 段舜山*, 武宝玕. UV-B对两种藻光合色素和多糖含量的影响[J]. , 2003, 22(1): 42-44.
LI Zheng, DUAN Shun-Shan, WU Bao-Gan. Effects of different intensity of UV-B irradiation enhancement on photosynthetic pigments and polysaccharide content in two algae. , 2003, 22(1): 42-44.

链接本文:

http://www.ecolsci.com/CN/Y2003/V22/I1/42

[1] 陈善文,武宝玕.2000.藻类对UV-B增强的响应及其分子基础(综述)[J].暨南大学学报(自然和医学版),21(5):88-94.

[2] 刘成圣,王悠,于娟,等.2002.UV辐射对叉鞭金藻和三角褐指藻光合色素的影响[J].海洋科学,126(7):5-7.

[3] 缪锦来,李光友,侯旭光,等.2002.UV-B辐射对南极冰藻中抗辐射物质的诱导作用[J].高技术通讯,4:82-96.

[4] 汪志平,徐步进.2001.螺旋藻的电离辐射抗性及与多糖含量的关系[J].核农学报,15(4):229-233.

[5] 谢苗,钟剑霞,甘纯玑.2001.海藻多糖的药用功能与展望[J].中国药学杂志,36(8):513-516.

[6] 杨震,童家明,唐学玺,等.1999.海洋单细胞藻对紫外吸收的比较研究[J].海洋通报,18(10):93-96.

[7] 周林珠,杨祥良,周井炎,等.2002.多糖抗氧化作用研究进展[J].中国生化药物杂志,23(4):210-212.

[8] 周志刚,刘志礼,刘雪娴.1997.极大螺旋藻的分离、纯化极其抗氧化特性的研究[J].植物学报,39(1):77-81.

[9] Aguilera J et al.1999.Effects of ultraviolet radiation on thallus absorption and photosynthesis pigments in the red alga Porphyra umbilicallis[J].J.Photochem.Photobiol,B:Biol,(48):75-82.

[10] Douglas Campbell.1998.The cyanobacterium Synechococcus resists UV-B by exchanging photosystem Ⅱ reaction-center D1 proteins[J].Plant Biology,95(1):364-369.

[11] Félix L.Figueroa.1997.Relationship between bio-optical characteristics and photoinhibition of phytoplankton[J].Aquatic Botany,59:237-251.

[12] Gudrun Krabs.2002.Wave length-dependent induction of UV-absorbing mycosporine-like amino acids in the red alga Chondrus crispus under natural solar radiation[J].Journal of Experimental Marine Biology and Ecology,268:69- 82.

[13] Irina M.Yakovleva,Eduard A.Titlyanov.2001.Effect of high visible and UV irradiance on subtidal Chondrus crispus:stress,photoinhibition and protective mechanisms[J].Aquatic Botany,70:47-61.

[14] Michel D,Gilles K A,Hamilton J K,et al.1956 Colorimeteric method for determination of sugas and related substances[J].Analytical Chemistry,28(3):350-356.

[15] Rail C.1998.Algal responses to enhanced ultraviolet-B radiation:Proceedings of the India National Science Acade my Part B [J].Biological Science,64(2):125.

[16] Timothy R.Parsons,Yoshiaki Matita,and Carol M.Lalli.1984.A manual of chemical and biological methods for seawater analysis[M].Great Britain:pergamon press.101-104.