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Maintenance or Collapse: Responses of Extraplastidic Membrane Lipid Composition to Desiccation in the Resurrection Plant Paraisometrum mileense
Li, Aihua2,3; Wang, Dandan2; Yu, Buzhu2; Yu, Xiaomei2; Li, Weiqi1,2; Li, WQ (reprint author), Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China.; weiqili@mail.kib.ac.cn
2014-07-28
Source PublicationPLOS ONE
ISSN1932-6203
Volume9Issue:7Pages:e103430
Contribution Rank第一
AbstractResurrection plants usually grow in specific or extreme habitats and have the capacity to survive almost complete water loss. We characterized the physiological and biochemical responses of Paraisometrum mileense to extreme desiccation and found that it is a resurrection plant. We profiled the changes in lipid molecular species during dehydration and rehydration in P. mileense, and compared these with corresponding changes in the desiccation-sensitive plant Arabidopsis thaliana. One day of desiccation was lethal for A. thaliana but not for P. mileense. After desiccation and subsequent rewatering, A. thaliana showed dramatic lipid degradation accompanied by large increases in levels of phosphatidic acid (PA) and diacylglycerol (DAG). In contrast, desiccation and rewatering of P. mileense significantly decreased the level of monogalactosyldiacylglycerol and increased the unsaturation of membrane lipids, without changing the level of extraplastidic lipids. Lethal desiccation in P. mileense caused massive lipid degradation, whereas the PA content remained at a low level similar to that of fresh leaves. Neither damage nor repair processes, nor increases in PA, occurred during non-lethal desiccation in P. mileense. The activity of phospholipase D, the main source of PA, was much lower in P. mileense than in A. thaliana under control conditions, or after either dehydration or rehydration. It was demonstrated that low rates of phospholipase D-mediated PA formation in P. mileense might limit its ability to degrade lipids to PA, thereby maintaining membrane integrity following desiccation.
KeywordPhospholipase-d Haberlea-rhodopensis Sporobolus-stapfianus Xerophyta-viscosa Craterostigma-plantagineum Phosphatidic-acid Water-deficit Myrothamnus-flabellifolia Photosynthetic Activity Protection Mechanisms
Subject AreaMultidisciplinary Sciences
DOI10.1371/journal.pone.0103430
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000339993700070
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/18321
Collection中国西南野生生物种质资源库
Corresponding AuthorLi, WQ (reprint author), Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China.; weiqili@mail.kib.ac.cn
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Li, Aihua,Wang, Dandan,Yu, Buzhu,et al. Maintenance or Collapse: Responses of Extraplastidic Membrane Lipid Composition to Desiccation in the Resurrection Plant Paraisometrum mileense[J]. PLOS ONE,2014,9(7):e103430.
APA Li, Aihua.,Wang, Dandan.,Yu, Buzhu.,Yu, Xiaomei.,Li, Weiqi.,...&weiqili@mail.kib.ac.cn.(2014).Maintenance or Collapse: Responses of Extraplastidic Membrane Lipid Composition to Desiccation in the Resurrection Plant Paraisometrum mileense.PLOS ONE,9(7),e103430.
MLA Li, Aihua,et al."Maintenance or Collapse: Responses of Extraplastidic Membrane Lipid Composition to Desiccation in the Resurrection Plant Paraisometrum mileense".PLOS ONE 9.7(2014):e103430.
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