Effect of different salinity on physiological features of Vallisneria natans
LIU Xiao-pei, ZHANG Yin-jiang*, LI Yan, DONG Yue, YI Mian, WEN Xiao-feng
1. College of Fisheries and Life Science of Shanghai Ocean University, Shanghai 201306, China; 2. Engineering Research Center for Water Environment Ecology in Shanghai, Shanghai 201306, China
People have paid more and more attention to the salt tolerance of submerged plants recently. The content of chlorophyll a in the leaves, the activity of SOD, POD and CAT, the MDA content and the respiration intensity of Vallisneria natans at every 24 hours were tested in laboratory simulation condition, with salinity gradients of 0 (the control group), 2, 3, 4, 5, 6 and 8. The results showed that chlorophyll a, chlorophyll b and CAT activity decreased with the increase of salinity; the enzyme activity of SOD and POD, and the MDA content increased firstly and then dropped with the increasing salinity. Chlorophyll content, the enzyme activity of antioxidant enzymes, MDA content and respiration intensity index in salinities 2 and 3 were not significantly different from those in the control group (p＞0.05), and V. natans grew better than other treatment groups. There were significant differences (p＜0.05) in chlorophyll content, the enzyme activity of antioxidant enzymes, MDA content and respiration intensity index between the treatment group of salinity 4 and the control group. The chlorophyll content decreased obviously, antioxidant enzymes activity increased and showed an obvious resistance, and respiration intensity reduced. The growth of V. natans in the treatment groups of salinities 5, 6 and 8 was worse than in the control group, and V. natans withered gradually and finally were dead on the forth day. As a result, V. natans can be used in the submerged vegetation restoration and reconstruction under the water salinity less than 3.
刘晓培1, 张饮江1,2*, 李岩1, 董悦1, 易冕1, 文晓峰1. 不同盐度对苦草生理特征的影响[J]. , 2012, 31(6): 606-612.
LIU Xiao-pei, ZHANG Yin-jiang*, LI Yan, DONG Yue, YI Mian, WEN Xiao-feng. Effect of different salinity on physiological features of Vallisneria natans. , 2012, 31(6): 606-612.
[1] 李钊. 海面寸寸升高威胁步步逼近——海平面升高将给法国带来严重生态危机[N]. 科技日报, 2008- 1-15.
[2] Adair S E, Moore J L. Distribution and status of submerged vegetation in estuaries of the upper Texas coast[J]. Wetlands, 1994, 14:110-116.
[3] Howard R J, Mendelssohn I A, Structure and composition of oligohaline marsh plant communities exposed to salinity pulses[J]. Aquatic Botany, 2000, 68:143-164.
[4] 陈敏,李海云,吕福堂. 植物耐盐性研究进展[J]. 聊城大学学报(自然科学版), 2011,24(3):47-50.
[5] 王卫红,季民. 9种沉水植物的耐盐性比较[J]. 农业环境科学学报, 2007, 26(4):1259-1263.
[6] 黄子贤,张饮江,马海峰,王聪,罗思婷,霍姮翠,董悦. 4种沉水植物对富营养化水体氮磷的去除能力[J]. 生态科学, 2011, 30(2):102-106.
[7] 王丽卿,李燕,张瑞雷. 6种沉水植物系统对淀山湖水质净化效果的研究[J]. 农业环境科学学报, 2008, 27(3):1134-1139.
[8] 熊秉红,李伟. 我国苦草属(L.)植物的生态学研究[J]. 武汉植物学研究, 2000, 18(6):500-508.
[9] 胡莲,万成炎,沈建忠,冯坤,孙金辉. 沉水植物在富营养化水体生态恢复中的作用及前景[J]. 水利渔业, 2006, 26(5):69-71.
[10] 管卫兵,陆锋,陈辉辉,何文辉. 亚洲苦草抗盐能力研究初报[J]. 湖南农业科学, 2011, (13): 51-53.
[11] 袁龙义,江林枝. 不同盐度对苦草、刺苦革和水车前种子萌发的影响研究[J]. 安徽农学通报, 2008, 14(17):77-80.
[12] Den Hartog C. The Sea-Grasses of the World[M]. Amsterdam: North Holland Publishing Company, 1970.
[13] French G T, Moore K A. Interactive effects of light and salinity stress on the growth, reproduction, and photosynthetic capabilities of Vallisneria Americana(wild celery)[J]. Estuaries, 2003, 26(5): 1255-1268.
[14] Doering P H, Chamberlain R H, Haunert D E. Using submerged aquatic vegetation to establish minimum and maximum fresh water inflows to the Caloosahatchee estuary, Florida[J]. Estuaries, 2002, 25(6):1343-1354.
[15] 秦天才, 吴玉树, 黄巧云, 胡红青. 镉、铅单一和复合污染对小白菜抗坏血酸含量的影响[J]. 生态学杂志, 1997, 16(3):31-34.
[16] 朱广廉,钟诲文,张爱琴. 植物生理学实验[M]. 北京:北京大学出版社, 1990. 51-54.
[17] 张志良. 植物生理学实验指导(第二版) [M]. 北京:高等教育出版社, 1990. 133-135.
[18] 周英军,戴珍科,武志林. SO2和NO2复合污染对蕃茄超氧化物歧化酶及叶片伤害的影响[J]. 中国环境科学, 1993, 13(6):429-432
