文献类型：期刊文献

英文题名：Nutrient assimilation and utilization in korean pine (Pinus koraiensis) seedlings exposed to exponential fertilization under contrasting spectra

作者：Zhao, Yan[1,2] Wang, Zi[1] Xu, Shaojun[1] Li, Yanjiao[3] He, Chunxia[2,4]

第一作者：Zhao, Yan

通信作者：He, CX[1]

机构：[1]Henan Univ Sci & Technol, Forestry Coll, Luoyang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat State Forestry A, 1 Dongxiaofu,Xiangshan Rd, Beijing 100091, Peoples R China;[3]Pingdingshan Univ, Key Lab Ecol Restorat Hilly Area, Pingdingshan, Peoples R China;[4]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing, Peoples R China

年份：2020

卷号：51

期号：18

起止页码：2414-2428

外文期刊名：COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000584069300001)】；

基金：This work was supported by the National Key Technologies R&D Program of China [2015BAD07B05].

语种：英文

外文关键词：Northeast red pine; reforestation; montane ecology; secondary metabolism

摘要：Pine trees are important for the agroforestry ecosystem due to their significance in nut production and ecological restoration. Korean pine (Pinus koraiensis Siebold & Zucc.) seedlings were cultured as model materials exposed to exponential fertilization (EF) at rates of 20 (E20), 80 (E80), and 140 mg nitrogen (N) plant(-1) (E140) under high-pressure sodium (HPS) lamps (proportion in photosynthetic photon flux density: 43.9% red, 54.7% green, and 1.5% blue lights) and light-emitting diode (LED) (6.6% red, 75% green, and 8.4% blue lights) spectra. A high rate of EF at 140 mg N plant(-1) under the LED spectrum tended to increase shoot biomass at the cost of phosphorus (P) dilution due to P assimilation through acid phosphatase activity and starch depletion. The uptake of N was not used for utilization but instead, for N storage in the biomass that assimilated through glutamine synthetase activity. Therefore, we conclude that the assimilation and utilization of P determined the growth and biomass in Korean pine seedlings while N can be absorbed and stored for reserve.