IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply
Guo, Jianying1,2,3,4; Yang, Yan1,2; Wang, Genxu1,2; Yang, Liudong1,2,4; Sun, Xiangyang1,2,4
Corresponding AuthorYang, Y(杨燕)
2010
Source PublicationPHYSIOLOGIA PLANTARUM
ISSN0031-9317
EISSN1399-3054
Volume139Issue:4Pages:335-347
SubtypeArticle
AbstractAbies fabri (Mast.) Craib. (A. fabri) is an endemic and dominant species in typical subalpine dark coniferous forests distributed in mountainous regions of Western Sichuan, China. We investigated the ecophysiological responses of A. fabri seedlings to short-term experimental drought, nitrogen supply and their interaction. Drought stress was created by excluding natural precipitation with automatically controlled plastic roof that covered the seedlings. Nitrogen fertilization was applied weekly by spraying over seedlings ammonium nitrate solution (50 kg N ha-1 year-1) during the growing season of 2009. The results showed that drought stress decreased leaf relative water content (RWC), whereas it caused marked increases in root mass ratio (RMR) and root/shoot mass ratio by 6.19 and 10.39%, respectively, as compared with the control. Drought stress increased malondialdehyde (MDA) content, electrolyte leakage, proline content, soluble sugars content and the activities of antioxidant enzymes, whereas nitrogen supply decreased MDA content, but enhanced activities of some antioxidant enzymes [especially peroxidase (POD)]. In the drought stressed plots, nitrogen supply increased RWC and decreased the content of MDA. The combination of drought stress and nitrogen supply also decreased the activities of antioxidant enzymes. These results indicated that the negative effects of drought stress on A. fabri seedlings might be alleviated by nitrogen supply.
KeywordPicea-asperata Seedlings Water-stress Physiological-responses Oxidative Stress Climate-change Mediterranean Shrubland Antioxidant Metabolism Terrestrial Ecosystems Biochemical Responses Superoxide-dismutase
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1111/j.1399-3054.2010.01370.x
WOS Subject ExtendedPlant Sciences
Indexed BySCI
WOS KeywordPICEA-ASPERATA SEEDLINGS ; WATER-STRESS ; PHYSIOLOGICAL-RESPONSES ; OXIDATIVE STRESS ; CLIMATE-CHANGE ; MEDITERRANEAN SHRUBLAND ; ANTIOXIDANT METABOLISM ; TERRESTRIAL ECOSYSTEMS ; BIOCHEMICAL RESPONSES ; SUPEROXIDE-DISMUTASE
Language英语
Quartile3区
TOP
WOS SubjectPlant Sciences
WOS IDWOS:000279840300001
Funding OrganizationChinese Academy of Sciences(KZCX2-YW-331-2 ; Y0R2100100 ; Y0R2130130)
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5617
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Environm Change & Regulat, Chengdu Inst Mt Hazards & Environm, Alpine Ecosyst Observat & Expt Stn Gongga Mt, Chengdu 610041, Peoples R China
2.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China
3.Leshan Teachers Coll, Sch Tourism & Econ Management, Leshan 614000, Peoples R China
4.Chinese Acad Sci, Grad Coll, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Guo, Jianying,Yang, Yan,Wang, Genxu,et al. Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply[J]. PHYSIOLOGIA PLANTARUM,2010,139(4):335-347.
APA Guo, Jianying,Yang, Yan,Wang, Genxu,Yang, Liudong,&Sun, Xiangyang.(2010).Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply.PHYSIOLOGIA PLANTARUM,139(4),335-347.
MLA Guo, Jianying,et al."Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply".PHYSIOLOGIA PLANTARUM 139.4(2010):335-347.
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