IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply
Junyu Li1,2; Tingfa Dong1,2; Qingxue Guo2,3; Hongxia Zhao3
Corresponding AuthorHongxia Zhao
2015
Source PublicationTREES-STRUCTURE AND FUNCTION
ISSN0931-1890
EISSN1432-2285
Volume29Issue:1Pages:143-159
SubtypeArticle
Abstract

We investigated the effects of different inorganic nitrogen forms (NO3 –N and NH4 +–N) on the morphology, physiology, and carbohydrate accumulation of male and female Populus deltoides. Results showed that both NO3 –N and NH4 +–N supply forms significantly increased plant growth, C and N contents of all plant organs, chlorophyll pigment contents, net photosynthesis rates (P n), and instantaneous photosynthetic N-use efficiencies (PNUE) in the leaves of both male and female P. deltoides. Females exhibited high total plant dry mass accumulation, P n, PNUE, and N contents in leaves but lower non-structure carbohydrate accumulation than males under nitrate treatment. However, males showed significantly higher P n, PNUE, and 15NH4 + in the leaves, free amino acid content, and nitrate reductase (NR) activities than females under each nitrogen form supply treatment. These results suggested that male and female P. deltoides used different adaptive strategies in dry mass accumulation, allocation, and exhibited different interactions between nitrogen and carbon metabolism. Males exhibited higher nitrogen assimilation ability and N-use efficiency than females under nitrogen fertilizations, whereas females showed more sensitivity to inorganic nitrogen forms of treatments and distinct preference for NO3 –N. Male P. deltoides showed no obvious bias to the two different N forms. Therefore, the different preferences of male and female P. deltoides of N supplied forms can serve as an important strategy for minimizing intraspecific competition between the two genders.

KeywordNitrogen Supply Form Dioecious Plants Nitrogen Use Efficiency Carbohydrate Accumulation Allocation In Different Organs
DOI10.1007/s00468-014-1099-6
Indexed BySCI
Language英语
Quartile2区
TOP
WOS IDWOS:000348451800014
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Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9604
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, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Junyu Li,Tingfa Dong,Qingxue Guo,et al. Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply[J]. TREES-STRUCTURE AND FUNCTION,2015,29(1):143-159.
APA Junyu Li,Tingfa Dong,Qingxue Guo,&Hongxia Zhao.(2015).Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply.TREES-STRUCTURE AND FUNCTION,29(1),143-159.
MLA Junyu Li,et al."Populus deltoides females are more selective in nitrogen assimilation than males under different nitrogen forms supply".TREES-STRUCTURE AND FUNCTION 29.1(2015):143-159.
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