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Authors Dooley, FD; Wyllie-Echeverria, S; Gupta, E; Ward, PD
Author Full Name Dooley, Frederick D.; Wyllie-Echeverria, Sandy; Gupta, Eric; Ward, Peter D.
Title Tolerance of Phyllospadix scouleri seedlings to hydrogen sulfide
Source AQUATIC BOTANY
Language English
Document Type Article
Author Keywords Extinctions; Lethality; Photosynthesis; Seagrass; Seedlings; Climate change
Keywords Plus EELGRASS ZOSTERA-MARINA; CHLOROPHYLL FLUORESCENCE; PHOTOSYNTHETIC RESPONSE; GROWTH; TEMPERATURE; ADAPTATIONS; SEAGRASSES; PARAMETERS; ANOXIA; PLANTS
Abstract Phyllospadix scouleri is a common seagrass along the rocky intertidal coast of the Pacific Northwest. Previously we established a correlation between increased sulfide and hydrogen sulfide (H2S) and Zostera marina seedling senescence. While Z. marina grows in soft sediment environments, here we evaluate the possibility that P. scouleri may experience similar decreases in health when exposed to increasing H2S loading. To do this, seedlings were immersed in various concentrations of H2S, in axenic media, and photosynthetic and respiratory output was measured. We found that at high doses (mM) of H2S Photosystem II was inhibited whereas Photosystem I remained active. At lower levels, total photosynthetic output decreased with increasing H2S concentrations. Using these data we produced an LD50 of 430 mu M at 48 h and 86 mu M at 7 days. Our study confirms that Phyllospadix seedlings are also vulnerable to increasing sulfide loads. (C) 2015 Elsevier B.V. All rights reserved.
Author Address [Dooley, Frederick D.; Gupta, Eric; Ward, Peter D.] Univ Washington, Dept Biol, Seattle, WA 98195 USA; [Dooley, Frederick D.; Wyllie-Echeverria, Sandy] Univ Washington, Friday Harbor Labs, Friday Harbor, WA 98250 USA
Reprint Address Dooley, FD (corresponding author), Univ Washington, Dept Biol, 24 Kincaid Hall Box 351800, Seattle, WA 98195 USA.
E-mail Address fdd@u.washington.edu
Times Cited 2
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0304-3770
29-Character Source Abbreviation AQUAT BOT
ISO Source Abbreviation Aquat. Bot.
Publication Date MAY
Year Published 2015
Volume 123
Beginning Page 72
Ending Page 75
Digital Object Identifier (DOI) 10.1016/j.aquabot.2015.02.004
Page Count 4
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number CH0UU
Unique Article Identifier WOS:000353738700009
Plants associated with this reference

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