Adaption of Ulva pertusa to multiple-contamination of heavy metals and nutrients: Biological mechanism of outbreak of Ulva sp green tide

作者：Ge, Changzi^*; Yu, Xiru; Kan, Manman; Qu, Chunfeng

来源：Marine Pollution Bulletin, 2017, 125(1-2): 250-253.

DOI：10.1016/j.marpolbul.2017.08.025

• Multiple-contamination
• pH variation
• Pigment content
• SOD activity
• Viva pertusa

The multiple-contamination of heavy metals and nutrients worsens increasingly and Viva sp. green tide occurs almost simultaneously. To reveal the biological mechanism for outbreak of the green tide, Ulva pertusa was exposed to seven-day-multiple-contamination. The relation between pH variation (V-pH), Chl a content, ratio of (Chl a content)/(Chl b content) (R-chla/chlb), SOD activity of U. pertusa (A(SOD)) and contamination concentration is V-pH = 1.72 (+/- 0.38) + 1.68 (+/- 0.72) X 10(-4) X C-ammonia(2) (p < 0.05), C-chla = 0.88 (+/- 0.09) - 0.01 (+/- 0.00) X C-Cd (P < 0.05)) R-chla/Chlb = 0.72 (+/- 0.04) - 0.35 (+/- 0.08) X 10(-4) X C-Cd(2) (p < 0.05), and A(SOD) = 25.64 (+/-) (2.35) - 0.41 (+/- 0.09) X 10(-2) X C-Zn(2) + 0.54 (+/- 0.10) X C-zn (p < 0.05), respectively. C-ammonia, C-Cd and C-Zn is concentration of ammonia, Cd2+ and Zn2+, respectively. Comparing the contamination concentrations of seawaters where Ulva sp. green tide occurred and the contamination concentrations set in the present work, U. pertusa can adapt to multiple-contaminations in these waters. Thus, the adaption to multiple-contamination may be one biological mechanism for the outbreak of Ulva sp. green tide.

• 出版日期2017-12-15
• 单位山东大学