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DISCOVERY OF A RESTING STAGE IN THE HARMFUL, BROWN-TIDE-CAUSING PELAGOPHYTE, AUREOUMBRA LAGUNENSIS: A MECHANISM POTENTIALLY FACILITATING RECURRENT BLOOMS AND GEOGRAPHIC EXPANSION
Kang, Yoonja1; Tang, Ying-Zhong2; Taylor, Gordon T.1; Gobler, Christopher J.1
2017-02-01
发表期刊JOURNAL OF PHYCOLOGY
卷号53期号:1页码:118-130
文章类型Article
摘要To date, the life stages of pelagophytes have been poorly described. This study describes the ability of Aureoumbra lagunensis to enter a resting stage in response to environmental stressors, including high temperature, nutrient depletion, and darkness, as well as their ability to revert from resting cells back to vegetative cells after exposure to optimal light, temperature, and nutrient conditions. Resting cells became round in shape and larger in size, filled with red accumulation bodies, had smaller and fewer plastids, more vacuolar space, contained lower concentrations of chl a and RNA, displayed reduced photosynthetic efficiency, and lower respiration rates relative to vegetative cells. Analysis of vegetative and resting cells using Raman microspectrometry indicated resting cells were enriched in sterols within red accumulation bodies and were depleted in pigments relative to vegetative cells. Upon reverting to vegetative cells, cells increased their chl a content, photosynthetic efficiency, respiration rate, and growth rate and lost accumulation bodies as they became smaller. The time required for resting cells to resume vegetative growth was proportional to both the duration and temperature of dark storage, possibly due to higher metabolic demands on stored energy (sterols) reserves during longer period of storage and/or storage at higher temperature (20 degrees C vs. 10 degrees C). Resting cells kept in the dark at 10 degrees C for 7 months readily reverted back to vegetative cells when transferred to optimal conditions. Thus, the ability of Aureoumbra to form a resting stage likely enables them to form annual blooms within subtropical ecosystems, resist temperature extremes, and may facilitate geographic expansion via anthropogenic transport.
关键词Aureoumbra Brown Tide Cysts Harmful Algal Blooms Metabolism Resting Stage
DOI10.1111/jpy.12485
收录类别SCI
语种英语
WOS记录号WOS:000397259800012
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136745
专题海洋生态与环境科学重点实验室
作者单位1.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
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Kang, Yoonja,Tang, Ying-Zhong,Taylor, Gordon T.,et al. DISCOVERY OF A RESTING STAGE IN THE HARMFUL, BROWN-TIDE-CAUSING PELAGOPHYTE, AUREOUMBRA LAGUNENSIS: A MECHANISM POTENTIALLY FACILITATING RECURRENT BLOOMS AND GEOGRAPHIC EXPANSION[J]. JOURNAL OF PHYCOLOGY,2017,53(1):118-130.
APA Kang, Yoonja,Tang, Ying-Zhong,Taylor, Gordon T.,&Gobler, Christopher J..(2017).DISCOVERY OF A RESTING STAGE IN THE HARMFUL, BROWN-TIDE-CAUSING PELAGOPHYTE, AUREOUMBRA LAGUNENSIS: A MECHANISM POTENTIALLY FACILITATING RECURRENT BLOOMS AND GEOGRAPHIC EXPANSION.JOURNAL OF PHYCOLOGY,53(1),118-130.
MLA Kang, Yoonja,et al."DISCOVERY OF A RESTING STAGE IN THE HARMFUL, BROWN-TIDE-CAUSING PELAGOPHYTE, AUREOUMBRA LAGUNENSIS: A MECHANISM POTENTIALLY FACILITATING RECURRENT BLOOMS AND GEOGRAPHIC EXPANSION".JOURNAL OF PHYCOLOGY 53.1(2017):118-130.
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