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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45946

Title: Effect of copper(II), lead(II), and zinc(II) on growth & sporulation of Halophytophthora from Taiwan mangroves.
Authors: Eduardo M. Leaño
Ka-Lai Pang
Contributors: 國立臺灣海洋大學:海洋生物研究所
Keywords: Zinc
Halophytophthora species
Copper
Heavy metal pollution
Lead
Lower marine fungi
Mangrove
Oomycetes
Stramenophiles
Date: 2010
Issue Date: 2018-04-18T01:31:12Z
Publisher: Water, Air, & Soil Pollution
Abstract: Abstract: This study evaluated the effect of lead (Pb(II)), zinc (Zn(II)) and copper (Cu(II)) on growth and sporulation of four Halophytophthora species (Halophytophthora vesicula, Halophytophthora elongata, Halophytophthora spinosa var. lobata, and an oogonia-producing Halophytophthora sp.) isolated from different mangrove sites in Taiwan. Results show that all isolates grew well or even better at 1 ppm concentration of the heavy metals tested. Growth of all test isolates was totally inhibited at 500 ppm, except for H. spinosa var. lobata exposed to Zn(II). For sporulation, all isolates produced moderate to abundant zoosporangia or oogonia at 1 ppm Pb(II) and Zn(II). Production of zoosporangia by H. vesicula, H. elongata and H. spinosa var. lobata was significantly affected or totally inhibited at 1 ppm Pb(II) and Zn(II) and all concentrations of Cu(II). Abnormal oogonia were produced by Halophytophthora sp. at 10 ppm Cu(II) and 100 ppm of the three heavy metals. In general, Cu(II) and Zn(II) were found to be the most toxic, and the least toxic was Pb(II). H. spinosa var. lobata was the most tolerant to all the heavy metals, while H. vesicula and H. elongata were the most sensitive. Results of this study shows that increased concentrations of Pb(II), Cu(II), and Zn(II) in the mangrove environment can significantly affect growth and impair normal reproduction of Halophytophthora species.
Relation: 213(1-4) pp.85-93
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45946
Appears in Collections:[海洋生物研究所] 期刊論文

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