气候变化领域集成服务门户(CCPortal): Mechanism of water extraction from gypsum rock by desert colonizing microorganisms

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DOI	10.1073/pnas.2001613117
	Mechanism of water extraction from gypsum rock by desert colonizing microorganisms
	Huang W.; Ertekin E.; Wang T.; Cruz L.; Dailey M.; DiRuggiero J.; Kisailus D.
发表日期	2020
ISSN	0027-8424
起始页码	10681
结束页码	10687
卷号	117 期号:20
英文摘要	Microorganisms, in the most hyperarid deserts around the world, inhabit the inside of rocks as a survival strategy. Water is essential for life, and the ability of a rock substrate to retain water is essential for its habitability. Here we report the mechanism by which gypsum rocks from the Atacama Desert, Chile, provide water for its colonizing microorganisms. We show that the microorganisms can extract water of crystallization (i.e., structurally ordered) from the rock, inducing a phase transformation from gypsum (CaSO4·2H2O) to anhydrite (CaSO4). To investigate and validate the water extraction and phase transformation mechanisms found in the natural geological environment, we cultivated a cyanobacterium isolate on gypsum rock samples under controlled conditions. We found that the cyanobacteria attached onto high surface energy crystal planes ({011}) of gypsum samples generate a thin biofilm that induced mineral dissolution accompanied by water extraction. This process led to a phase transformation to an anhydrous calcium sulfate, anhydrite, which was formed via reprecipitation and subsequent attachment and alignment of nanocrystals. Results in this work not only shed light on how microorganisms can obtain water under severe xeric conditions but also provide insights into potential life in even more extreme environments, such as Mars, as well as offering strategies for advanced water storage methods. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Anhydrite; Gypsum; Microorganisms; Phase transformation; Water extraction
语种	英语
scopus关键词	calcium sulfate; nanocrystal; water; acid anhydride; calcium sulfate; water; Article; bacterium isolate; biofilm; chemical parameters; Chile; controlled study; crystallization; cyanobacterium; desert; dissolution; energy; extraction; gypsum rock; microbial colonization; nonhuman; phase transformation; precipitation; priority journal; rock; surface energy; validation process; adaptation; extreme environment; metabolism; physiology; Adaptation, Physiological; Anhydrides; Biofilms; Calcium Sulfate; Cyanobacteria; Extreme Environments; Water
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160289
作者单位	Huang, W., Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, United States; Ertekin, E., Department of Biology, Johns Hopkins University, Baltimore, MD 21218, United States; Wang, T., Materials Science and Engineering Program, University of California, Riverside, CA 92521, United States; Cruz, L., Materials Science and Engineering Program, University of California, Riverside, CA 92521, United States; Dailey, M., Department of Biology, Johns Hopkins University, Baltimore, MD 21218, United States; DiRuggiero, J., Department of Biology, Johns Hopkins University, Baltimore, MD 21218, United States; Kisailus, D., Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, United States, Materials Science and Engineering Program, University of California, Riverside, CA 92521, United States, Department of Materials Science and Engineering, University of California, Irvine, CA 92697, United States
推荐引用方式 GB/T 7714	Huang W.,Ertekin E.,Wang T.,et al. Mechanism of water extraction from gypsum rock by desert colonizing microorganisms[J],2020,117(20).
APA	Huang W..,Ertekin E..,Wang T..,Cruz L..,Dailey M..,...&Kisailus D..(2020).Mechanism of water extraction from gypsum rock by desert colonizing microorganisms.Proceedings of the National Academy of Sciences of the United States of America,117(20).
MLA	Huang W.,et al."Mechanism of water extraction from gypsum rock by desert colonizing microorganisms".Proceedings of the National Academy of Sciences of the United States of America 117.20(2020).