Microstructural and physiological responses to cadmium stress under different nitrogen levels in Populus cathayana females and males

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dc.contributor.author Liu, Miao
dc.contributor.author Bi, Jingwen
dc.contributor.author Liu, Xiucheng
dc.contributor.author Kang, Jieyu
dc.contributor.author Korpelainen, Helena
dc.contributor.author Niinemets, Ulo
dc.contributor.author Li, Chunyang
dc.date.accessioned 2021-01-01T23:01:50Z
dc.date.available 2021-01-01T23:01:50Z
dc.date.issued 2020-01
dc.identifier.citation Liu , M , Bi , J , Liu , X , Kang , J , Korpelainen , H , Niinemets , U & Li , C 2020 , ' Microstructural and physiological responses to cadmium stress under different nitrogen levels in Populus cathayana females and males ' , Tree Physiology , vol. 40 , no. 1 , pp. 30-45 . https://doi.org/10.1093/treephys/tpz115
dc.identifier.other PURE: 135779080
dc.identifier.other PURE UUID: 0ebf3519-bb72-4527-9e1b-06c6c0f53e11
dc.identifier.other WOS: 000522853000004
dc.identifier.other ORCID: /0000-0002-7046-6995/work/86484629
dc.identifier.uri http://hdl.handle.net/10138/323968
dc.description.abstract Although increasing attention has been paid to the relationships between heavy metal and nitrogen (N) availability, the mechanism underlying adaptation to cadmium (Cd) stress in dioecious plants has been largely overlooked. This study examined Cd accumulation, translocation and allocation among tissues and cellular compartments in Populus cathayana Rehder females and males. Both leaf Cd accumulation and root-to-shoot Cd translocation were significantly greater in females than in males under a normal N supply, but they were reduced in females and enhanced in males under N deficiency. The genes related to Cd uptake and translocation, HMA2, YSL2 and ZIP2, were strongly induced by Cd stress in female roots and in males under a normal N supply. Cadmium largely accumulated in the leaf blades of females and in the leaf veins of males under a normal N supply, while the contrary was true under N deficiency. Furthermore, Cd was mainly distributed in the leaf epidermis and spongy tissues of males, and in the leaf palisade tissues of females. Nitrogen deficiency increased Cd allocation to the spongy tissues of female leaves and to the palisade tissues of males. In roots, Cd was preferentially distributed to the epidermis and cortices in both sexes, and also to the vascular tissues of females under a normal N supply but not under N deficiency. These results suggested that males possess better Cd tolerance compared with females, even under N deficiency, which is associated with their reduced root-to-shoot Cd translocation, specific Cd distribution in organic and/or cellular compartments, and enhanced antioxidation and ion homeostasis. Our study also provides new insights into engineering woody plants for phytoremediation. en
dc.format.extent 16
dc.language.iso eng
dc.relation.ispartof Tree Physiology
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Cd distribution
dc.subject dioecy
dc.subject nitrogen level
dc.subject sequestration
dc.subject sexual differences
dc.subject OXIDATIVE STRESS
dc.subject CD ACCUMULATION
dc.subject NUTRIENT-UPTAKE
dc.subject BRASSICA-NAPUS
dc.subject SATIVA L.
dc.subject CELL-WALL
dc.subject TOLERANCE
dc.subject METABOLISM
dc.subject ALLOCATION
dc.subject PHYTOREMEDIATION
dc.subject 11831 Plant biology
dc.subject 1182 Biochemistry, cell and molecular biology
dc.title Microstructural and physiological responses to cadmium stress under different nitrogen levels in Populus cathayana females and males en
dc.type Article
dc.contributor.organization Department of Agricultural Sciences
dc.contributor.organization Viikki Plant Science Centre (ViPS)
dc.contributor.organization Population Genetics and Biodiversity Group
dc.contributor.organization Plant Production Sciences
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1093/treephys/tpz115
dc.relation.issn 0829-318X
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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