A plant root system architectural taxonomy: A framework for root nomenclature

Zobel, R. W.; Waisel, Y.

doi:10.1080/11263501003764483

Cited by 108 publications

(96 citation statements)

References 18 publications

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“…The b model is a non-linear asymptotic function used to study root distribution in several previous works [26,28e31]: The diameter class length (DCL, mm cm À3 ) was calculated for very fine (0.0e0.5 mm), fine (0.5e2.0 mm) and coarse (>2 mm) diameters for the whole sampled soil profile [24]. For the first two soil layers (0e10 and 10e30 cm) the DCL was calculated for seven diameter classes from 0 to 2 mm (0.0e0.25; 0.25e0.50: 0.5e0.75; 0.75e1.0; 1.0e1.25; 1.25e1.5; 1.5e1.75 and 1.75e2.0 mm).…”

Section: Root Characterizationmentioning

confidence: 99%

“…A thorough characterization of fine roots is therefore an essential step in understanding the C sequestration potential of different bioenergy species. Main root traits are genetically controlled [23,24] but environmental and soil conditions also play an important role in their determination [25]. To limit the environmental effect the study of root traits of contrasting species should be carried out in the same location in a completely randomized experimental design.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of fine root system and potential contribution to soil organic carbon of six perennial bioenergy crops

Chimento

Amaducci

2015

Biomass and Bioenergy

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Section: Root Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of fine root system and potential contribution to soil organic carbon of six perennial bioenergy crops

Chimento

Amaducci

2015

Biomass and Bioenergy

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“…The International Society of Root Research (ISRR, www. rootresearch.org) proposed a general nomenclature for roots (Zobel 2009;Zobel and Weisel 2010) to compare root types across species. The nomenclature suggested by Feix et al (2000), which is used here, is probably the most common one for maize.…”

Section: Introductionmentioning

confidence: 99%

A consensus map of QTLs controlling the root length of maize

2011

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Traits related to the root length of maize (Zea mays L.), reported by 15 QTL studies of nine mapping populations, were subjected to a QTL metaanalysis. Traits were grouped according to ontology, and we propose a system of abbreviations to unambiguously identify the different root types and branching orders. The nine maps were merged into a consensus map, and the number and positions of putative QTL clusters (MQTLs) were determined. A total of 161 QTLs was grouped into 24 MQTLs and 16 individual QTLs. Seven MQTLs harbored root traits, which had been reported to be collocated with QTLs for grain yield or other drought-responsive traits in the field. The most consistent collocations were observed for the number and weight of the seminal roots (five loci). Based on our analysis at least six loci are good candidates for further evaluation (bins 1.07, 2.04, 2.08, 3.06, 6.05 and 7.04). For example, the MQTL in bin 2.04 harbored ten different single QTLs; the MQTLs in bins 1.07 and 3.06 combined 11 and 7 QTLs, respectively, that were detected in more than three populations. The presented database is a first step for a comprehensive overview of the genetic architecture of root system architecture and its ecophysiological function.

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“…Fine root (defined as 0.5-2 mm according to Zobel and Waisel, 2010) density was determined by wet sieving of the fine roots from soil cores (100 cm 3 ) and subsequent oven drying at 70 • C. This analysis was limited to the heather sites, since the roots and boulders at the forested sites inhibited sampling of undisturbed soil cores. The roots of heather were limited to the upper 15 cm at the heather sites with almost exponential decrease at NH and a more linear decrease at SH (Table 1).…”

Section: Study Sitesmentioning

confidence: 99%

Soil water stable isotopes reveal evaporation dynamics at the soil–plant–atmosphere interface of the critical zone

Sprenger

Tetzlaff

Soulsby

2017

Hydrol. Earth Syst. Sci.

161

165

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Abstract. Understanding the influence of vegetation on water storage and flux in the upper soil is crucial in assessing the consequences of climate and land use change. We sampled the upper 20 cm of podzolic soils at 5 cm intervals in four sites differing in their vegetation (Scots Pine (Pinus sylvestris) and heather (Calluna sp. and Erica Sp)) and aspect. The sites were located within the Bruntland Burn longterm experimental catchment in the Scottish Highlands, a low energy, wet environment. Sampling took place on 11 occasions between September 2015 and September 2016 to capture seasonal variability in isotope dynamics. The pore waters of soil samples were analyzed for their isotopic composition (δ 2 H and δ 18 O) with the direct-equilibration method. Our results show that the soil waters in the top soil are, despite the low potential evaporation rates in such northern latitudes, kinetically fractionated compared to the precipitation input throughout the year. This fractionation signal decreases within the upper 15 cm resulting in the top 5 cm being isotopically differentiated to the soil at 15-20 cm soil depth. There are significant differences in the fractionation signal between soils beneath heather and soils beneath Scots pine, with the latter being more pronounced. But again, this difference diminishes within the upper 15 cm of soil. The enrichment in heavy isotopes in the topsoil follows a seasonal hysteresis pattern, indicating a lag time between the fractionation signal in the soil and the increase/decrease of soil evaporation in spring/autumn. Based on the kinetic enrichment of the soil water isotopes, we estimated the soil evaporation losses to be about 5 and 10 % of the infiltrating water for soils beneath heather and Scots pine, respectively. The high sampling frequency in time (monthly) and depth (5 cm intervals) revealed high temporal and spatial variability of the isotopic composition of soil waters, which can be critical, when using stable isotopes as tracers to assess plant water uptake patterns within the critical zone or applying them to calibrate traceraided hydrological models either at the plot to the catchment scale.

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A plant root system architectural taxonomy: A framework for root nomenclature

Cited by 108 publications

References 18 publications

Characterization of fine root system and potential contribution to soil organic carbon of six perennial bioenergy crops

Characterization of fine root system and potential contribution to soil organic carbon of six perennial bioenergy crops

A consensus map of QTLs controlling the root length of maize

Soil water stable isotopes reveal evaporation dynamics at the soil–plant–atmosphere interface of the critical zone

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