IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Sex-specific responses of Populus deltoides to defoliation
Li Shuxin1,2; Yu Lei1,2; Duan Baoli1; Peng Shuming1,3
2017
Source PublicationACTA SOCIETATIS BOTANICORUM POLONIAE
ISSN0001-6977
EISSN2083-9480
Volume86Issue:4Pages:12
SubtypeArticle
AbstractThere has been an increasing interest in understanding the differential effects of sexual dimorphism on plant stress responses. However, there is no clear pattern in the responses of the sexes to defoliation. In this study, the effects of different severity of artificial defoliation on biomass production, total nonstructural carbohydrate (NSC) concentration, and photosynthetic rate (P-N) of male and female Populus deltoides were examined. We used half and full defoliation to observe the differences between the sexes in three harvest dates (1 week, 4 weeks, and 8 weeks after treatments). We hypothesized that female and male P. deltoides compared with an undefoliated control would have compensatory growth in response to defoliation treatments. Results showed that half and full defoliation reduced the growth of both sexes. Following half defoliation, root growth was reduced, especially in males, at T2 (4 weeks after defoliation) and T3 (8 weeks after defoliation), while males showed an increase in height increment under the half defoliation compared with the nondefoliation treatments. By contrast, females were more negatively affected by defoliation than males in terms of biomass after 8 weeks. One week after defoliation, PN increased significantly in females and males under half defoliation (+30%, +32%, respectively) and full defoliation (+58%, +56%, respectively). However, 8 weeks after defoliation, there was little difference in PN between defoliated and undefoliated female cuttings. Increases in stomatal conductance (g(s)) and leaf nitrogen were observed under fully defoliated female and male cuttings. Moreover, males had less NSC concentrations following half defoliation compared with females. Our results indicate that leaf compensatory growth in male cuttings of P. deltoides was maintained by obtaining greater photosynthetic capacity, higher leaf nitrogen, and lower NSC concentration following half and full defoliation. Our results highlight that females suffered from greater negative effects than did males following half defoliation, but under full defoliation, the differences between both sexes were subtle.
Keywordartificial defoliation Populus deltoides nonstructural carbohydrates net photosynthetic rate sexual differences
DOI10.5586/asbp.3566
Indexed BySCI
WOS KeywordEUCALYPTUS-GLOBULUS ; GROWTH-RESPONSES ; PINUS-RADIATA ; PROCESSIONARY MOTH ; CARBON ALLOCATION ; GAS-EXCHANGE ; NITROGEN ; PHOTOSYNTHESIS ; PLANTS ; WATER
Language英语
Quartile4区
Funding ProjectNational Nature Science Foundation of China[3137070605] ; Frontier Science Key Research Programs of CAS[QYZDB-SSW-DQC037] ; Sichuan Science and Technology Support Program[2017JY0234]
TOP
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000422837600006
Funding OrganizationNational Nature Science Foundation of China ; Frontier Science Key Research Programs of CAS ; Sichuan Science and Technology Support Program
PublisherPOLSKIE TOWARZYSTWO BOTANICZNE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20861
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorPeng Shuming
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chengdu Univ Technol, Sch Environm, Chengdu 610059, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding 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
Li Shuxin,Yu Lei,Duan Baoli,et al. Sex-specific responses of Populus deltoides to defoliation[J]. ACTA SOCIETATIS BOTANICORUM POLONIAE,2017,86(4):12.
APA Li Shuxin,Yu Lei,Duan Baoli,&Peng Shuming.(2017).Sex-specific responses of Populus deltoides to defoliation.ACTA SOCIETATIS BOTANICORUM POLONIAE,86(4),12.
MLA Li Shuxin,et al."Sex-specific responses of Populus deltoides to defoliation".ACTA SOCIETATIS BOTANICORUM POLONIAE 86.4(2017):12.
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