2024 Root life span efficiency and turnover

Root life span efficiency and turnover

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August undefined, 2024

WebMar 29, 2002 · The third edition of a standard resource, this book offers a state-of-the-art, multi-disciplinary presentation of plant roots. It examines structure and development, … WebMar 29, 2024 · The estimation method of fine root turnover rate was as follows: Turnover 1 = the ratio of annual growth yield of fine root to observed average live root length; Turnover 2 = the ratio of annual fine root length death to observed average live root length; Turnover 3 = the average of the above two indicators (Wang et al. 2024 ).

Rapid decline in nitrate uptake and respiration with age in fine ...

WebSchla¨pfer and Ryser 1996), who examined root and leaf turnover in grass species with respect to their growth rate and nutrient availability, found that slower-growing ... long root life span was signiﬁcantly associated with slow root respiration rates, low speciﬁc root length, and low nitrogen-to-carbon (N:C) ratios (Tjoelker et al. 2005 Web4. Life span of both leaves and roots was also correlated with tissue density. Species with low tissue density had a faster turnover of leaves and roots. 5. It is concluded that tissue structure is an inherent constraint that prevents simul-taneous maximization of both nutrient acquisition and nutrient conservation. The short co su pomnozne podstatne mena

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WebJul 11, 2008 · The shorter root life span would facilitate root turnover and generation of young root, which in turn would favour water and nutrient use efficiency, thus allowing L. chinensis to better cope with their stressed habitats. Physiologically, rhizomes are strong sinks to compete for photoassimilates with roots. As a result, it is conceivable that ... WebDec 21, 2001 · The relation between root age and root function is poorly understood, despite its importance to root longevity. • The effect of root age on respiration rates and 32 P-uptake kinetics was determined for roots excavated from mature apple and citrus trees (median root life spans of 30 vs 300 d). WebMay 1, 2013 · Root turnover varies widely within and among species and across ecosystems (Majdi et al 2005) but a fundamental understanding of the mechanisms that control fine … co su slangove slova

(PDF) Root Life Span, Efficiency, and Turnover

The Ecology of Root Lifespan - ScienceDirect

WebDec 15, 2006 · Within their lifespan, fine roots experience very different site conditions influencing functioning and efficiency. It is assumed that fine roots are maintained as long as the benefits (water and nutrient uptake) outweighs the costs ( Eissenstat and Yanai, 2002, Burton et al., 2000 ). WebDec 21, 2001 · The root lifespan that maximizes efficiency can be visualized by plotting E lifetime over time, and represents the theoretically optimal root life span ( Yanai et al., 1995; Eissenstat & Yanai, 1997 ). Parameters for calculating nutrient uptake Phosphorus uptake (UPTAKE) was estimated by three alternative methods. co su to aktivaWebroot turnover rate and their sensitivity to changes in root phenology. Estimates of ﬁne root turnover rate were calculated using four common methods relating turn-over to total root … co su osobne udaje

"WebMar 3, 2012 · Roots are inhabited by a broad range of fungi, including pathogens and mycorrhizal fungi, with functional traits related to plant health and nutrition. ... Eissenstat DM, Yanai RD (2002) Root life span, efficiency, and turnover. In: Waisel Y, Eshel S, Kafkafi U (eds) Plant root: the hidden half. Marcel Dekker, New York, pp 221–238. " - Root life span efficiency and turnover

Root life span efficiency and turnover

Estimating age‐dependent costs and benefits of roots with contrasting …

WebJul 1, 2000 · Elevated CO 2 increases the absolute fine-root turnover rates; however, the standing crop root biomass is also greater, and the effect of elevated CO 2 on relative turnover rates (turnover[ratio ]biomass) ranges from an increase to a decrease. At the ecosystem level these changes could lead to increased C storage in roots.

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Webfor roots excavated from mature apple and citrus trees (median root life spans of 30 vs 300 d). To evaluate whether root longevity maximizes the efficiency of nutri-ent capture, daily … WebEstimates of fine root lifespan and turnover are based on empirical observations and relationships with fine root and whole-plant traits and apply explicitly to the fine root pool …

WebJan 19, 2024 · The aims of this study were to quantitatively classify fine lateral roots (FLRs), thick lateral roots (TLRs), and nodal roots (NRs) and analyze their dynamics of mean diameter (MD), lengths and surface area percentage with growth stages in rice plant. WebFeb 14, 2011 · Root life span, efficiency, and turnover; P.J. Gregory Root growth and activity; View more references. Cited by (26) ... Tillage practices effect on root distribution and water use efficiency of winter wheat under rain-fed condition in the North China Plain. Soil and Tillage Research, Volume 146, Part B, 2015, pp. 286-295 ...

WebMay 1, 2013 · Roots tend to favour slower growth rates and longer fine root life spans to promote high resource use efficiency (Chen and Brassard 2013; Eissenstat et al. 2000). ... Root production,... WebJul 7, 2011 · On average, ~44% of the root volume was in the top 20-cm soil layer, 70% in the top 40 cm, and 90% in the top 60 cm. About 5% of the roots in pulse crops were located below 60 cm in depth, significantly less than the 12% …

WebJan 25, 2006 · The efficiency of the mycorrhizal infection was determined on five root systems after randomly sampling 30 pieces of root (1 cm long) per experimental condition. ... Root DW increased from 0.009 g at VS1 to 9.193 g at RS2, while shoot DW increased from 0.026 g at VS1 to 284.25 g at RS2. ... This evolution during the life cycle of M. truncatula ...

WebDec 16, 2006 · Root drying could thus be a way to avoid this variability source. If fresh root parameters are required, dry root parameters can be converted in fresh root parameters using equations linking fresh and dry diameters, lengths or weights. ... Root life span, efficiency, and turnover. In: Waisel Y, Eshel A, Kafkafi U (eds) Plant roots, the hidden ... co su to podstatne menaWebDec 21, 2001 · The root lifespan that maximizes efficiency can be visualized by plotting E lifetime over time, and represents the theoretically optimal root life span ( Yanai et al., … co su to autorske pravaWebDifferences in the life-span between root diameter and root order affect estimates of root turnover. Therefore, based on this study, both diameter and order should be considered when estimating fine root life-span and turnover. Key words: Fine root diameter, Root order, Life-span, Turnover, Fraxinus mandshurica, Larix gmelinii Cite this article co su vlastnostiWebJun 23, 2014 · All the root architecture modifications resulting from the interaction between seedlings and bioagents (rhizobacteria and Trichoderma spp.) observed in the present study favored the root plasticity of rice seedlings. ... “Root life span, efficiency and turnover,” in Plant Roots: The Hidden Half, Y. Waisel, A. Eshel, and U. Kafkafi, Eds., pp ... co su to ludske pravaWebOct 5, 2024 · Global patterns of root turnover for terrestrial ecosystems. Crossref GoogleScholar Google Scholar Gillabel J, Denef K, Brenner J, Merckx R, Paustian K … cosvim srlWebJul 1, 2005 · The fine root turnover rate was 1.8 year−1for sequential cores and 1.4 year−1for third-year ingrowth cores. The inverse of the root turnover rate is, in turn, a measure of average root longevity; it was smaller for the finest roots in both cases. cos uz jetteWebanisms controlling root turnover is likely to be found in the still poorly-defined relation between root function and root age. Yanai etat (1995) introduced a cost-benefit model to explore whether root life span maximizes the efficiency of nutrient capture, with efficiency defined as the ratio of nutrient cosway jenjarom