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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
Source PublicationJOURNAL OF PHYCOLOGY
Volume53Issue:1Pages:118-130
SubtypeArticle
AbstractTo 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.
KeywordAureoumbra Brown Tide Cysts Harmful Algal Blooms Metabolism Resting Stage
DOI10.1111/jpy.12485
Indexed BySCI
Language英语
WOS IDWOS:000397259800012
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136745
Collection海洋生态与环境科学重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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