干旱区生态环境知识资源中心(Arid): Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum (L.) R. Br). Application to measure root system response to water stress in field conditions

Arid

DOI	10.1371/journal.pone.0214182
	Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum (L.) R. Br). Application to measure root system response to water stress in field conditions
	Faye, Awa 1,2; Sine, Bassirou 1,3; Chopart, Jean-Louis 4; Grondin, Alexandre 1,2,3,5; Lucas, Mikael 1,2,5; Diedhiou, Abdala Gamby 1,2,6; Gantet, Pascal 5; Cournac, Laurent 7,8; Ming, Doohong 9; Audebert, Alain 1,3,10; Kane, Aboubacry 1,2,6; Laplaze, Laurent 1,2,5
通讯作者	Laplaze, Laurent
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2019
卷号	14 期号:7
英文摘要	Pearl millet is able to withstand dry and hot conditions and plays an important role for food security in arid and semi-arid areas of Africa and India. However, low soil fertility and drought constrain pearl millet yield. One target to address these constraints through agricultural practices or breeding is root system architecture. In this study, in order to easily phenotype the root system in field conditions, we developed a model to predict root length density (RLD) of pearl millet plants from root intersection densities (RID) counted on a trench profile in field conditions. We identified root orientation as an important parameter to improve the relationship between RID and RLD. Root orientation was notably found to depend on soil depth and to differ between thick roots (more anisotropic with depth) and fine roots (isotropic at all depths). We used our model to study pearl millet root system response to drought and showed that pearl millet reorients its root growth toward deeper soil layers that retain more water in these conditions. Overall, this model opens ways for the characterization of the impact of environmental factors and management practices on pearl millet root system development.
类型	Article
语种	英语
国家	Senegal ; France ; USA
开放获取类型	Green Published, Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000484974100004
WOS关键词	CLIMATE-CHANGE ; ORIENTATION ; DROUGHT ; BALANCE ; COUNTS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218124
作者单位	1.Lab Mixte Int Adaptat Plantes & Microorganismes A, Dakar, Senegal; 2.Lab Commun Microbiol, Dakar, Senegal; 3.Inst Senegalais Rech Agr, Ctr Etud Reg Ameliorat Adaptat Secheresse, Thies, Senegal; 4.Agerconsult, Montpellier, France; 5.Univ Montpellier, Inst Rech Dev, UMR DIADE, Montpellier, France; 6.Univ Cheikh Anta Diop, Dept Biol Vegetale, Dakar, Senegal; 7.Univ Montpellier, UMR Eco & Sols, Inst Rech Dev, INRA,Montpellier Supagro, Montpellier, France; 8.Lab Mixte Int Intensificat Ecol Sols Cult Afrique, Dakar, Senegal; 9.Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA; 10.Univ Montpellier, INRA, Montpellier SupAgro, UMR AGAP,Ctr Cooperat Int Rech Agron Dev, Montpellier, France
推荐引用方式 GB/T 7714	Faye, Awa,Sine, Bassirou,Chopart, Jean-Louis,et al. Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum (L.) R. Br). Application to measure root system response to water stress in field conditions[J]. French National Research Institute for Sustainable Development,2019,14(7).
APA	Faye, Awa.,Sine, Bassirou.,Chopart, Jean-Louis.,Grondin, Alexandre.,Lucas, Mikael.,...&Laplaze, Laurent.(2019).Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum (L.) R. Br). Application to measure root system response to water stress in field conditions.PLOS ONE,14(7).
MLA	Faye, Awa,et al."Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum (L.) R. Br). Application to measure root system response to water stress in field conditions".PLOS ONE 14.7(2019).