IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Sexual differences in photosynthetic activity, ultrastructure and phytoremediation potential of Populus cathayana exposed to lead and drought
Han, Ying1,2,3; Wang, Ling1; Zhang, Xiaolu2; Korpelainen, Helena; Li, Chunyang2,4
Corresponding Author李春阳
2013
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
EISSN1758-4469
Volume33Issue:10Pages:1043-1060
SubtypeArticle
AbstractLead (Pb) and drought frequently coexist in China's forests and seriously affect their biomass, net primary productivity and biodiversity, particularly among dioecious trees with different sex-related reproduction costs. Here, the effects of Pb, deposited into soil (Pb-soil) and leaves (Pb-leaf), on the traits related directly or indirectly to photosynthetic activity were evaluated in the dioecious tree, Populus cathayana Rehd. In addition, we analysed the potential of P. cathayana males and females for phytoremediation based on the photosynthetic activity, cellular ultrastructure and phytoremediation-related parameters. The Pb level was 2.7 mmol Pb(NO3)(2) kg(-1) dry soil in the Pb-soil treatment and 1.8 mmol Pb(NO3)(2) per plant in the Pb-leaf treatment. In parallel experiments, two watering regimes, 100 and 50% of the field capacity, were applied. The stress duration was 2 months. Dry mass production, net photosynthetic rate increased in both sexes, particularly in females, when exposed to Pb-leaf alone, Pb-soil with drought and Pb-leaf with drought. The study revealed that males exhibit greater plasticity in the photosynthetic capacity than females. Severe damage to cellular ultrastructure was also observed in the leaves of males and females exposed to Pb-leaf, but more strongly in females. However, the Pb-soil treatment alone did not affect these traits as significantly compared with other treatments. Moreover, drought significantly increased the sensitivity to Pb stress in both sexes, but more so in females. In addition, changes in the photosynthetic capacity and cellular ultrastructure combined with the analysis of tolerance index, translocation factor, bioconcentration factor and Pb concentration showed that males and females could be employed for different purposes in phytoremediation: females are promising candidates for phytoextraction, whereas males are promising candidates for phytostabilization.
KeywordDioecy Lead Stress Poplar
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1093/treephys/tpt086
WOS Subject ExtendedForestry
Indexed BySCI
WOS KeywordCARBON-ISOTOPE DISCRIMINATION ; HEAVY-METALS ; CHLOROPHYLL FLUORESCENCE ; HEZHANG COUNTY ; WATER RELATIONS ; MERCURY CONTAMINATION ; MESOPHYLL PROTOPLASTS ; CADMIUM-ACCUMULATION ; SOUTHWESTERN CHINA ; ADAPTIVE RESPONSES
Language英语
Quartile1区
TOP
WOS SubjectForestry
WOS IDWOS:000327460000005
Funding OrganizationNational Key Basic Research Program of China(2012CB416901) ; Key Program of the National Natural Science Foundation of China(30930075)
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6649
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Processes & Ecol Regulat, Chengdu 610041, Peoples R China
3.Southwest Univ Sci & Technol, Sch Life Sci, Mianyang 621010, Peoples R China
4.Univ Helsinki, Dept Agr Sci, FI-00014 Helsinki, Finland
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Han, Ying,Wang, Ling,Zhang, Xiaolu,et al. Sexual differences in photosynthetic activity, ultrastructure and phytoremediation potential of Populus cathayana exposed to lead and drought[J]. TREE PHYSIOLOGY,2013,33(10):1043-1060.
APA Han, Ying,Wang, Ling,Zhang, Xiaolu,Korpelainen, Helena,&Li, Chunyang.(2013).Sexual differences in photosynthetic activity, ultrastructure and phytoremediation potential of Populus cathayana exposed to lead and drought.TREE PHYSIOLOGY,33(10),1043-1060.
MLA Han, Ying,et al."Sexual differences in photosynthetic activity, ultrastructure and phytoremediation potential of Populus cathayana exposed to lead and drought".TREE PHYSIOLOGY 33.10(2013):1043-1060.
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