气候变化领域集成服务门户(CCPortal): Multiseriate cortical sclerenchyma enhance root penetration in compacted soils

CCPortal

DOI	10.1073/pnas.2012087118
	Multiseriate cortical sclerenchyma enhance root penetration in compacted soils
	Schneider H.M.; Strock C.F.; Hanlon M.T.; Vanhees D.J.; Perkins A.C.; Ajmera I.B.; Sidhu J.S.; Mooney S.J.; Brown K.M.; Lynch J.P.
发表日期	2021
ISSN	00278424
卷号	118 期号:6
英文摘要	Mechanical impedance limits soil exploration and resource capture by plant roots. We examine the role of root anatomy in regulating plant adaptation to mechanical impedance and identify a root anatomical phene in maize (Zea mays) and wheat (Triticum aestivum) associated with penetration of hard soil: Multiseriate cortical sclerenchyma (MCS). We characterize this trait and evaluate the utility of MCS for root penetration in compacted soils. Roots with MCS had a greater cell wall-to-lumen ratio and a distinct UV emission spectrum in outer cortical cells. Genome-wide association mapping revealed that MCS is heritable and genetically controlled. We identified a candidate gene associated with MCS. Across all root classes and nodal positions, maize genotypes with MCS had 13% greater root lignin concentration compared to genotypes without MCS. Genotypes without MCS formed MCS upon exogenous ethylene exposure. Genotypes with MCS had greater lignin concentration and bending strength at the root tip. In controlled environments, MCS in maize and wheat was associated improved root tensile strength and increased penetration ability in compacted soils. Maize genotypes with MCS had root systems with 22% greater depth and 49% greater shoot biomass in compacted soils in the field compared to lines without MCS. Of the lines we assessed, MCS was present in 30 to 50% of modern maize, wheat, and barley cultivars but was absent in teosinte and wild and landrace accessions of wheat and barley. MCS merits investigation as a trait for improving plant performance in maize, wheat, and other grasses under edaphic stress. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Phenotype; Root anatomy; Soil impedance
语种	英语
scopus关键词	cellulose; ethylene; lignin; Article; barley; biomass; cell wall; genome-wide association study; genotype; lateral root; maize; mesocosm; multiseriate cortical sclerenchyma; nonhuman; phenotype; plant root; priority journal; quantitative trait; quantitative trait locus; shoot; soil; tensile strength; wheat
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180724
作者单位	Department of Plant Science, Pennsylvania State University, University Park, PA 16802, United States; Division of Agricultural and Environment Sciences, School of Biosciences, University of Nottingham, Leicestershire, LE12 5RD, United Kingdom; James Hutton Institute, Invergowrie, DD2 5DA, United Kingdom; Centre for Plant Integrative Biology, University of Nottingham, Leicestershire, LE12 5RD, United Kingdom
推荐引用方式 GB/T 7714	Schneider H.M.,Strock C.F.,Hanlon M.T.,et al. Multiseriate cortical sclerenchyma enhance root penetration in compacted soils[J],2021,118(6).
APA	Schneider H.M..,Strock C.F..,Hanlon M.T..,Vanhees D.J..,Perkins A.C..,...&Lynch J.P..(2021).Multiseriate cortical sclerenchyma enhance root penetration in compacted soils.Proceedings of the National Academy of Sciences of the United States of America,118(6).
MLA	Schneider H.M.,et al."Multiseriate cortical sclerenchyma enhance root penetration in compacted soils".Proceedings of the National Academy of Sciences of the United States of America 118.6(2021).