Growth reduction and alteration of nonstructural carbohydrate (NSC) allocation in a sympodial bamboo (Indocalamus decorus) under atmospheric O-3 enrichment
文献类型：期刊论文
| 作者 | Li, Li ; Li, Jinling; Wang, Xiaoke; Wang, Weifeng; Leung, Felix; Liu, Xiao; Wang, Chao
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2022-06-20 |
| 卷号 | 826期号:0页码:154096 |
| 关键词 | AMBIENT OZONE CONCENTRATIONS PHYLLOSTACHYS-EDULIS STRESS TOLERANCE SEASONAL-CHANGES PHOEBE-BOURNEI CLONAL PLANTS ELEVATED CO2 LEAF GUERRILLA SEEDLINGS |
| ISSN号 | 0048-9697 |
| 英文摘要 | Regional increases in atmospheric O-3, mainly produced photochemically from anthropogenic precursor gases, have phytotoxicity due to its strong oxidizing properties. To determine the response of bamboo physiology to elevated O-3 levels, three-year-old dwarf bamboo (Indocalamus decorus) clones were exposed to three O-3 concentrations (Ambient-AA, 21.3 to 80.9 ppb in the daytime;-AA+70, 70 ppb O-3 above ambient;-AA+140, 140 ppb O-3 above ambient) in open-top chambers for one growing season in Beijing, China. Gas exchange, biomass, growth, soluble sugar, and starch contents were examined at the end of the experiment. Our findings indicated that: (1) elevated O-3 treatments decreased the photosynthesis rate, total biomass, and bud numbers but increased individual bud biomass and rhizome bud to rhizome biomass ratio. The most severe reduction was observed in new rhizome biomass (35.9% reduction in AA+70 and 57.2% reduction in AA+140), whereas individual bud biomass increased by 50% and 75% in the AA+70 and AA+140 groups compared with AA, respectively; (2) the starch contents in the rhizome decreased by 28.4%, whereas soluble sugar increased by 38.1% in the AA+140 rhizome buds compared to AA; (3) only the culm numbers of pachymorph rhizomes (clumped) decreased, whereas no changes in leptomorph rhizomes were observed. However, the mean distance between two ramets was lengthened by 49.4% and 86.5% in AA+70 and AA+140, respectively. In conclusion, Indocalamus decorus allocated more nonstructural carbohydrates (NSCs) from the rhizome to the buds to form stronger buds and ensure the survival of newer generations as a high priority in response to O-3 exposure. Indocalamus decorus may be conducive to escaping from disadvantaged habitats and decreasing resource competition by lengthening the distance between two ramets. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47269]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Wang, Xiaoke |
| 作者单位 | 1.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China 2.Nanjing Forestry Univ, Bamboo Res Inst, Nanjing 210037, Jiangsu, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.Nanjing Forestry Univ, Coll Biol & Environm, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China 5.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong 999077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Li,Li, Jinling,Wang, Xiaoke,et al. Growth reduction and alteration of nonstructural carbohydrate (NSC) allocation in a sympodial bamboo (Indocalamus decorus) under atmospheric O-3 enrichment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,826(0):154096. |
| APA | Li, Li.,Li, Jinling.,Wang, Xiaoke.,Wang, Weifeng.,Leung, Felix.,...&Wang, Chao.(2022).Growth reduction and alteration of nonstructural carbohydrate (NSC) allocation in a sympodial bamboo (Indocalamus decorus) under atmospheric O-3 enrichment.SCIENCE OF THE TOTAL ENVIRONMENT,826(0),154096. |
| MLA | Li, Li,et al."Growth reduction and alteration of nonstructural carbohydrate (NSC) allocation in a sympodial bamboo (Indocalamus decorus) under atmospheric O-3 enrichment".SCIENCE OF THE TOTAL ENVIRONMENT 826.0(2022):154096. |
入库方式： OAI收割
来源：生态环境研究中心
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