DOI: 10.1111/gcb.13845
Scopus记录号: 2-s2.0-85029229167
论文题名: Variable silicon accumulation in plants affects terrestrial carbon cycling by controlling lignin synthesis
作者: Klotzbücher T. ; Klotzbücher A. ; Kaiser K. ; Vetterlein D. ; Jahn R. ; Mikutta R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 1 起始页码: e183
结束页码: e189
语种: 英语
英文关键词: carbon cycle
; lignin
; litter decomposition
; rice
; silicon
; structural plant components
Scopus关键词: bioaccumulation
; carbon cycle
; decomposition
; lignin
; litter
; rice
; silicon
; terrestrial ecosystem
; Southeast Asia
; algae
; Oryza sativa
; Poaceae
; carbon
; lignin
; silicon
; biosynthesis
; carbon cycle
; ecosystem
; metabolism
; Oryza
; plant stem
; Carbon
; Carbon Cycle
; Ecosystem
; Lignin
; Oryza
; Plant Stems
; Silicon
英文摘要: Current climate and land-use changes affect regional and global cycles of silicon (Si), with yet uncertain consequences for ecosystems. The key role of Si in marine ecology by controlling algae growth is well recognized but research on terrestrial ecosystems neglected Si since not considered an essential plant nutrient. However, grasses and various other plants accumulate large amounts of Si, and recently it has been hypothesized that incorporation of Si as a structural plant component may substitute for the energetically more expensive biosynthesis of lignin. Herein, we provide evidence supporting this hypothesis. We demonstrate that in straw of rice (Oryza sativa) deriving from a large geographic gradient across South-East Asia, the Si concentrations (ranging from 1.6% to 10.7%) are negatively related to the concentrations of carbon (31.3% to 42.5%) and lignin-derived phenols (32 to 102 mg/g carbon). Less lignin may explain results of previous studies that Si-rich straw decomposes faster. Hence, Si seems a significant but hardly recognized factor in organic carbon cycling through grasslands and other ecosystems dominated by Si-accumulating plants. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110566
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Department of Soil Physics, Helmholtz Centre for Environmental Research- UFZ, Halle (Saale), Germany
Recommended Citation:
Klotzbücher T.,Klotzbücher A.,Kaiser K.,et al. Variable silicon accumulation in plants affects terrestrial carbon cycling by controlling lignin synthesis[J]. Global Change Biology,2018-01-01,24(1)