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Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status
Feng, Lihua1,2; Jiang, Hao3; Zhang, Yuanbin3; Zhang, Sheng3
Corresponding AuthorSheng Zhang
2014
Source PublicationPHYSIOLOGIA PLANTARUM
ISSN0031-9317
EISSN1399-3054
Volume151Issue:4Pages:434-445
SubtypeArticle
AbstractPrevious studies have indicated that Populus cathayana Rehder females are more sensitive and less tolerant to stressful environments than males, but it is still unknown whether there are sexual differences in defensive and protective traits under high UV-B (HUVB) radiation and low soil nutrient status. In this study, P. cathayana was employed as a model species to investigate sex-related physiological and biochemical responses to UV-B radiation under different soil nutrient conditions. Cuttings were exposed to two UV-B radiation regimes (ambient UV-B radiation and decreased UV-B radiation) under two soil nutrient status (topsoil and deep soil) for 100 days over one growing season. Both HUVB radiation and low soil nutrient status induced greater decreases in plant growth, dry mass accumulation, gas exchange and leaf nitrogen use efficiency in females than in males, and greater increases in lipid peroxide and antioxidant enzyme activities, and secondary defense capacities in males than in females. Moreover, sexually different responses happened also in organelle ultrastructure. Our results showed that: (1) females suffered greater negative effects and exhibited lower defense capacities than did males under HUVB radiation, low soil nutrient status and their combination; (2) low soil nutrient status reduced plant's sensitivity to HUVB radiation by increasing allocation to defense and decreasing allocation to growth compared with high soil nutrient status. These results provide evidence that sexually different tradeoffs happen between growth and defense in P. cathayana under HUVB radiation and low soil nutrient status.
KeywordDioecy Uv-b Radiation Soil Nutrient Status Sexual Differences Poplar
Subject Area林学
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1111/ppl.12126
URL查看原文
WOS Subject ExtendedPlant Sciences
Indexed BySCI
WOS KeywordSALIX-MYRSINIFOLIA ; PHYSIOLOGICAL-RESPONSES ; SECONDARY METABOLITES ; ADAPTIVE RESPONSES ; DROUGHT STRESS ; CLIMATE-CHANGE ; GAS-EXCHANGE ; ELEVATED CO2 ; PLANT ; GROWTH
Language英语
Quartile3区
TOP
WOS SubjectPlant Sciences
WOS IDWOS:000340253700006
Funding OrganizationNational Natural Science Foundation of China(31170572) ; National Key Basic Research Program of China(2012CB416901) ; Young Talent Team Program of the Institute of Mountain Hazards and Environment(SDSQB-2012-02)
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6645
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.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Feng, Lihua,Jiang, Hao,Zhang, Yuanbin,et al. Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status[J]. PHYSIOLOGIA PLANTARUM,2014,151(4):434-445.
APA Feng, Lihua,Jiang, Hao,Zhang, Yuanbin,&Zhang, Sheng.(2014).Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status.PHYSIOLOGIA PLANTARUM,151(4),434-445.
MLA Feng, Lihua,et al."Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status".PHYSIOLOGIA PLANTARUM 151.4(2014):434-445.
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