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	Seasonal changes in the effects of free-air CO(2) enrichment (FACE) on growth, morphology and physiology of rice root at three levels of nitrogen fertilization
	Yang, Lianxin1; Wang, Yulong1; Kobayashi, Kazuhiko2; Zhu, Jianguo3; Huang, Jianye1; Yang, Hongjie1; Wang, Yunxia1; Dong, Guichun1; Liu, Gang3; Han, Yong3
刊名	GLOBAL CHANGE BIOLOGY
	2008-08-01
卷号	14期号:8页码:1844-1853
关键词	FACE free-air CO(2) enrichment global atmospheric change growth morphology physiology rice (Oryza sativa) root
ISSN号	1354-1013
DOI	10.1111/j.1365-2486.2008.01624.x
通讯作者	Yang, Lianxin(lxyang@yzu.edu.cn)
英文摘要	Over time, the relative effects of elevated [CO(2)] on the aboveground photosynthesis, growth and development of rice (Oryza sativa L.) are likely to be changed with increasing duration of CO(2) exposure, but the resultant effects on rice belowground responses remain to be evaluated. To investigate the impacts of elevated [CO(2)] on seasonal changes in root growth, morphology and physiology of rice, a free-air CO(2) enrichment (FACE) experiment was performed at Wuxi, Jiangsu, China, in 2002-2003. A japonica cultivar with large panicle was exposed to two [CO(2)] (ambient [CO(2)], 370 mu mol mol(-1); elevated [CO(2)], 570 mu mol mol(-1)) at three levels of nitrogen (N): low (LN, 15 g N m(-2)), medium (MN, 25 g N m(-2)) and high N (HN, 35 g N m(-2)). Elevated [CO(2)] increased cumulative root volume, root dry weight, adventitious root length and adventitious root number at all developmental stages by 25-71%, which was mainly associated with increased root growth rate during early growth period (EGP) and lower rate of root senescence during late growth period (LGP), while a slight inhibition of root growth rate occurred during middle growth period (MGP). For individual adventitious roots, elevated [CO(2)] increased average length, volume, diameter and dry weight early in the season, but the effects gradually disappeared in subsequent stages. Total surface area and active adsorption area per unit root dry weight reached their maxima 10 days earlier in FACE vs. ambient plants, but both of them together with root oxidation ability per unit root dry weight declined with elevated [CO(2)] during MGP and LGP, the decline being larger during MGP than LGP. The CO(2)-induced decreases in specific root activities during MGP and LGP were associated with a larger amount of root accumulation during EGP and lower N concentration and higher C/N ratio in roots during MGP and LGP in FACE vs. ambient plants. The results suggest that most of the CO(2)-induced increases in shoot growth of rice are similarly associated with increased root growth.
收录类别	SCI
WOS关键词	ORYZA-SATIVA L. ; ELEVATED CO2 ; CARBON-DIOXIDE ; N FERTILIZATION ; RESPONSES ; YIELD ; DYNAMICS ; SYSTEM ; CROPS
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000257712400010
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558736
专题	南京土壤研究所
通讯作者	Yang, Lianxin
作者单位	1.Yangzhou Univ, Key Lab Crop Genet & Physiol Jiangsu Prov, Yangzhou 225009, Peoples R China 2.Univ Tokyo, Grad Sch Agr & Life Sci, Bunkyo Ku, Tokyo 1138657, Japan 3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Yang, Lianxin,Wang, Yulong,Kobayashi, Kazuhiko,et al. Seasonal changes in the effects of free-air CO(2) enrichment (FACE) on growth, morphology and physiology of rice root at three levels of nitrogen fertilization[J]. GLOBAL CHANGE BIOLOGY,2008,14(8):1844-1853.
APA	Yang, Lianxin.,Wang, Yulong.,Kobayashi, Kazuhiko.,Zhu, Jianguo.,Huang, Jianye.,...&Zhou, Juan.(2008).Seasonal changes in the effects of free-air CO(2) enrichment (FACE) on growth, morphology and physiology of rice root at three levels of nitrogen fertilization.GLOBAL CHANGE BIOLOGY,14(8),1844-1853.
MLA	Yang, Lianxin,et al."Seasonal changes in the effects of free-air CO(2) enrichment (FACE) on growth, morphology and physiology of rice root at three levels of nitrogen fertilization".GLOBAL CHANGE BIOLOGY 14.8(2008):1844-1853.

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