干旱区生态环境知识资源中心(Arid): Architectural and anatomical responses of maize roots to agronomic practices in a semi-arid environment

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DOI	10.1002/jpln.201800560
	Architectural and anatomical responses of maize roots to agronomic practices in a semi-arid environment
	Zhan, Ai 1,3; Liu, Jianliang 1,2; Yue, Shanchao 1; Chen, Xinping 3; Li, Shiqing 1; Bucksch, Alexander 4,5,6
通讯作者	Liu, Jianliang ; Li, Shiqing
来源期刊	JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
ISSN	1436-8730
EISSN	1522-2624
出版年	2019
卷号	182 期号:5 页码:751-762
英文摘要	Root architecture and anatomy are important determinants of nitrogen (N) and water acquisition, but they are also environmentally plastic to adapt to N and water availability. Therefore, understanding the relationship between root traits and environmental factors is essential for improving N and water acquisition. A field experiment was conducted in the semi-arid region of the Loess Plateau in northwestern China to quantify the architectural and anatomical root traits of maize (Zea mays L.) in response to plastic film mulching and N fertilization. We compared four treatments: non-mulching with and without N supply as well as plastic film mulching with and without N supply. Variation existed for all root architecture and anatomy traits within maize root crowns. Crown and brace root angles to the soil line decreased in response to film mulching and N fertilization. Crown roots under plastic film mulching showed a significantly decreased distance to branching, reduced lateral root length, and overall increased root diameter. Similarly, N application significantly decreased the distance to branching, yet induced more compact and denser crown roots, and increased the root diameter. Brace roots exhibited an increased distance to branching, greater lateral root length and density, as well as a larger root diameter in response to plastic film mulching and N fertilization. Additionally, the accumulated number of nodal roots increased greatly under plastic film mulching and N treatments. At the anatomical level, N application reduced the proportion of the root cortical aerenchyma area. In contrast, aerenchyma area, cortex cell size, and late metaxylem vessel diameter were increased as a result of plastic film mulching. These results demonstrate root architectural and anatomical traits respond to mulching practices and N fertilization.
英文关键词	N application plastic film mulching root anatomy root architecture water
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000488334900008
WOS关键词	IMPROVES DROUGHT TOLERANCE ; NITROGEN-USE EFFICIENCY ; ZEA-MAYS L. ; AERENCHYMA FORMATION ; CORTICAL AERENCHYMA ; ADVENTITIOUS ROOTS ; PHENOTYPIC VARIATION ; BRANCHING DENSITY ; LOESS PLATEAU ; RIDGE-FURROW
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	西北农林科技大学 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217292
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; 2.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Sichuan, Peoples R China; 3.China Agr Univ, Ctr Resources Environm & Food Secur, Coll Resources & Environm Sci, Beijing 100193, Peoples R China; 4.Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA; 5.Univ Georgia, Warnell Sch Forestry & Nat Resources, Athens, GA 30602 USA; 6.Univ Georgia, Inst Bioinformat, Athens, GA 30602 USA
推荐引用方式 GB/T 7714	Zhan, Ai,Liu, Jianliang,Yue, Shanchao,et al. Architectural and anatomical responses of maize roots to agronomic practices in a semi-arid environment[J]. 西北农林科技大学, 中国农业大学,2019,182(5):751-762.
APA	Zhan, Ai,Liu, Jianliang,Yue, Shanchao,Chen, Xinping,Li, Shiqing,&Bucksch, Alexander.(2019).Architectural and anatomical responses of maize roots to agronomic practices in a semi-arid environment.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,182(5),751-762.
MLA	Zhan, Ai,et al."Architectural and anatomical responses of maize roots to agronomic practices in a semi-arid environment".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 182.5(2019):751-762.