title: Acyl chain length of phosphatidylserine is correlated with plant lifespan.
abstract: Plant lifespan is affected by factors with genetic and environmental bases. The laws governing these two factors and how they affect plant lifespan are unclear. Here we show that the acyl chain length (ACL) of phosphatidylserine (PS) is correlated with plant lifespan. Among the detected eight head-group classes of membrane lipids with lipidomics based on triple quadrupole tandem mass spectrometry, the ACL of PS showed high diversity, in contrast to the ACLs of the other seven classes, which were highly conserved over all stages of development in all plant species and organs and under all conditions that we studied. Further investigation found that acyl chains of PS lengthened during development, senescence, and under environmental stresses and that increasing length was accelerated by promoted- senescence. The acyl chains of PS were limited to a certain carbon number and ceased to increase in length when plants were close to death. These findings suggest that the ACL of PS can count plant lifespan and could be a molecular scale ruler for measuring plant development and senescence.
authors: Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China; Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Yan
authors: Y
authors: Li
authors: Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Guowei
authors: G
authors: Zheng
authors: Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Yanxia
authors: Y
authors: Jia
authors: Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Xiaomei
authors: X
authors: Yu
authors: Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Xudong
authors: X
authors: Zhang
authors: Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Buzhu
authors: B
authors: Yu
authors: Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Dandan
authors: D
authors: Wang
authors: Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Yanling
authors: Y
authors: Zheng
authors: Department of Biology, Honghe University, Mengzi, Yunnan, China.
authors: Xuejun
authors: X
authors: Tian
authors: Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China; Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
authors: Weiqi
authors: W
authors: Li
mesh_terms: D017360:Arabidopsis / Q000737:chemistry / Q000254:growth & development / Q000502:physiology; D019607:Brassicaceae / Q000737:chemistry / Q000254:growth & development / Q000502:physiology; D016922:Cellular Senescence; D004777:Environment; D018525:Germination / Q000502:physiology; D008563:Membrane Lipids / Q000737:chemistry* / Q000378:metabolism; D010718:Phosphatidylserines / Q000737:chemistry* / Q000378:metabolism; D063245:Plant Development / Q000502:physiology; D018515:Plant Leaves / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism; D018521:Plant Physiological Phenomena; D010944:Plants / Q000737:chemistry* / Q000378:metabolism; D013312:Stress, Physiological / Q000502:physiology; D013997:Time Factors
chemical_list: D008563:Membrane Lipids; D010718:Phosphatidylserines