文献类型：期刊文献

英文题名：Growth, Physiological, Biochemical, and Ionic Responses of Morus alba L. Seedlings to Various Salinity Levels

作者：Lu, Nan[1,2] Luo, Zijing[1] Ke, Yuzhou[3] Dai, Li[1] Duan, Hongjing[1] Hou, Rongxuan[1] Cui, Binbin[4] Dou, Suhan[5,6] Zhang, Yadong[5,6] Sun, Yuhan[1] Li, Yun[1]

第一作者：Lu, Nan;卢楠

通信作者：Li, Y[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Forest Genet & Tree Breeding, Key Lab Tree Breeding & Cultivat,State Forestry A, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Coll Biol Sci & Technol,Minist Educ, Beijing Adv Innovat Ctr Tree Breeding Mol Design, Natl Engn Lab Tree Breeding,Key Lab Genet & Breed, Beijing 100083, Peoples R China;[3]Tibet Municipal Tree Sci Inst, Lasa 850000, Peoples R China;[4]Baoding Univ, Dept Biol & Chem, Baoding 071000, Peoples R China;[5]Henan Longyuan Flowers & Trees Co Ltd, Yanling 461200, Xuchang, Peoples R China;[6]Beijing Forestry Univ, Yanling Collaborat Innovat Ctr, Yanling 461200, Xuchang, Peoples R China

年份：2017

卷号：8

期号：12

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000419210800029)】；

基金：This work was financially supported by the Special Fund for Forest Scientific Research in the Public Welfare of China (No. 201504401), the National Natural Science Foundation of China (No. 30870231), Medium and Long Scientific Research Project for Young Teachers in Beijing Forestry (2015ZCQ-SW-03); the Project of National Natural Science Foundation of China (No. 31400562); the National Science and Technology Support Program (2012BAD01B0601) and Innovation Team Development Program of the Ministry of Education (IRT13047).

语种：英文

外文关键词：salinity; mulberry; gas exchange; ion homeostasis; organic osmolytes; enzymatic antioxidants

摘要：Mulberry (Morus alba L.), a moderately salt-tolerant tree species, is considered to be economically important. In this study, 1-year-old mulberry seedlings cultivated in soil under greenhouse conditions were treated with five concentrations of sodium chloride (NaCl; 0%, 0.1%, 0.2%, 0.3%, and 0.5%) for 3 and 21 days. Plant growth parameters were not affected by 0.1% NaCl, but significant reductions were observed after treatment with 0.2%, 0.3%, and 0.5% NaCl. The malondialdehyde content and cell membrane stability of mulberry seedlings exposed to 0.1% NaCl did not change, indicating that mulberry is not significantly affected by low-salinity conditions. The Na contents of various organs did not increase significantly in response to 0.1% NaCl, but the K:Na, Mg:Na, and Ca:Na ratios of various organs were affected by NaCl. Marked changes in the levels of major compatible solutes (proline, soluble sugars, and soluble proteins) occurred in both the leaves and roots of NaCl-treated seedlings relative to control seedlings. Under severe saline conditions (0.5% NaCl), the ability of mulberry to synthesize enzymatic antioxidants may be impaired.