Linkage of root morphology to anatomy with increasing nitrogen availability in six temperate tree species

Wang, Wenna; Wang, Yan; Hoch, Günter; Wang, Zhengquan; Gu, Jiacun

doi:10.1007/s11104-018-3563-3

Cited by 46 publications

(41 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, increased SRL were previously reported for competing, mature Fagus trees [68], and Fagus seedlings competing with herbs [82]. Furthermore, consistent responses to N enrichment resulting in greater fine root diameters of temperate trees has been reported recently [85]. However, similar to our findings (Figure 6a,c), Lei et al [86] reported no significant differences in Fagus fine-root diameter and SRL between different species richness levels.…”

Section: Species-specific Plasticity Of Functional Root Traits (Under Intra-and Interspecific Competition)supporting

confidence: 91%

Plasticity of Root Traits under Competition for a Nutrient-Rich Patch Depends on Tree Species and Possesses a Large Congruency between Intra- and Interspecific Situations

Lak

Sandén

Mayer

et al. 2020

Forests

View full text Add to dashboard Cite

Belowground competition is an important structuring force in terrestrial plant communities. Uncertainties remain about the plasticity of functional root traits under competition, especially comparing interspecific vs. intraspecific situations. This study addresses the plasticity of fine root traits of competing Acer pseudoplatanus L. and Fagus sylvatica L. seedlings in nutrient-rich soil patches. Seedlings’ roots were grown in a competition chamber experiment in which root growth (biomass), morphological and architectural fine roots traits, and potential activities of four extracellular enzymes were analyzed. Competition chambers with one, two conspecific, or two allospecific roots were established, and fertilized to create a nutrient ‘hotspot’. Interspecific competition significantly reduced fine root growth in Fagus only, while intraspecific competition had no significant effect on the fine root biomass of either species. Competition reduced root nitrogen concentration and specific root respiration of both species. Potential extracellular enzymatic activities of β-glucosidase (BG) and N-acetyl-glucosaminidase (NAG) were lower in ectomycorrhizal Fagus roots competing with Acer. Acer fine roots had greater diameter and tip densities under intraspecific competition. Fagus root traits were generally more plastic than those of Acer, but no differences in trait plasticity were found between competitive situations. Compared to Acer, Fagus roots possessed a greater plasticity of all studied traits but coarse root biomass. However, this high plasticity did not result in directed trait value changes under interspecific competition, but Fagus roots grew less and realized lower N concentrations in comparison to competing Acer roots. The plasticity of root traits of both species was thus found to be highly species- but not competitor-specific. By showing that both con- and allospecific roots had similar effects on target root growth and most trait values, our data sheds light on the paradigm that the intensity of intraspecific competition is greater than those of interspecific competition belowground.

show abstract

Section: Species-specific Plasticity Of Functional Root Traits (Under Intra-and Interspecific Competition)supporting

confidence: 91%

Plasticity of Root Traits under Competition for a Nutrient-Rich Patch Depends on Tree Species and Possesses a Large Congruency between Intra- and Interspecific Situations

Lak

Sandén

Mayer

et al. 2020

Forests

View full text Add to dashboard Cite

show abstract

“…In the present study, the phenomenon that intercropped relationship change the developmental pattern of apple and white clove had been found, but the specific internal mechanism has not been verified. In order to prove this mechanism, biotechnology is an essential tool [22,40,41]. Using biotechnology can reveal the physiological changes of white clover and apple under intercropped relationships at molecular level: it is conceivable that physiological changes must be the basis of changes in developmental patterns.…”

Section: Discussionmentioning

confidence: 99%

Intercropped relationship change the developmental pattern of apple and white clover

et al. 2019

View full text Add to dashboard Cite

Intercropping can introduce greater plant diversity and functional complementarity in an arable crop system but inter-and intracompetition can between intercropped crops. The rhizo-box was established of apple-white clover intercropped system to examine the competitive relationship between intercropped crops on the Loess Plateau. The results showed that the competitive relationship between intercropped crops was dynamic and changed with the crop competitiveness. Crop competitiveness was characterized by root development, although intercropping inhibited the development and nutrient accumulation aboveground of apple trunks and branches, intercropped apples still maintained a larger root system than under monoculture and the root morphology of intercropped apples changed significantly. White clover had lower competitiveness than apple at the beginning of the year, which was reflected in the inhibited development in May. However in July and October, intercropped white clover had more biomass and nutrient accumulation than under monoculture. ARTICLE HISTORY

show abstract

“…Morphological traits were significantly changed following N fertilization, which indicate the potential alternations of physiological functions and their relationship. In this study, correlations between SRL and FP, MDA and TWC, between SRA and FP, and between RTD and FRV and FP were altered following nitrogen fertilization, indicating the potential plasticity of root morphology and physiology (Dudley, 1996; Rennenberg et al, 2006; Wang et al, 2018b). The amount of added nitrogen affects the correlation between morphological and physiological characteristics of fine roots (Blanes et al, 2013).…”

Section: Discussionmentioning

confidence: 59%

“…Fine root functional characteristics respond differently to changes in the form and availability of soil nutrients owing to anthropogenic N addition and experimental nutrient addition (Blanes et al, 2013). Different levels of nitrogen addition had different effects on root structure, which will inevitably affect the relationships between plant root morphology and physiology, as well as the carbon cycle of the soil ecosystem (Wang et al, 2018b). However, the degree of impact varied.…”

Section: Discussionmentioning

confidence: 99%

The response of fine root morphological and physiological traits to added nitrogen in Schrenk’s spruce (Picea schrenkiana) of the Tianshan mountains, China

Gong

Zhao

2019

PeerJ

View full text Add to dashboard Cite

Fine roots are essential for water and nutrient uptake in plants, but little is known about the variation in fine root traits and the underlying mechanisms that drive it. Understanding the responses of fine root function traits to changing environmental conditions and the role of fine root traits as drivers of forest ecosystem processes are critical for informing physiological and ecological theory as well as ecosystem management. We measured morphological and physiological traits of fine roots from six soil layers and three diameter classes in Schrenk’s spruce (Picea shrenkiana) forests of the Tianshan mountains, China. We found significant effects of nitrogen addition on these morphological and physiological traits, which varied by soil layer and root diameter. Specifically, specific root length (SRL) was higher in medium N addition group (N2) than in control group (N0). Specific root area (SRA) was higher in the control group (N0) than fertilized groups (N1, N2 and N3). Root tissue density (RTD) was higher in low N addition group (N1) than in the other group. Root dry matter content had no significant difference among four treatment groups. SRL, SRA, and RTD of fine roots in different diameter classes were all significantly different between high N addition (N3) and the control (N0) groups. The physiological characteristics of fine roots showed that soluble sugar (SS), fine root vitality (FRV), and tissue water content (TWC) in different soil layers were higher in the control group than in the fertilized groups. While soluble protein (SP), malondialdehyde (MDA) and free proline (FP) were lower in the control group (N0) than in the fertilized groups. In addition, SS, FRV, SP, TWC, FP, and MDA in all N addition treatments groups were significantly different from the control group. Fine root morphological traits were closely related to physiological traits, and added nitrogen inputs change these correlations. Our study confirms that nitrogen addition has specific effects on the morphological and physiological traits of fine roots of Schrenk’s spruce, and the effects of N addition vary according to the amount added.

show abstract

Linkage of root morphology to anatomy with increasing nitrogen availability in six temperate tree species

Cited by 46 publications

References 65 publications

Plasticity of Root Traits under Competition for a Nutrient-Rich Patch Depends on Tree Species and Possesses a Large Congruency between Intra- and Interspecific Situations

Plasticity of Root Traits under Competition for a Nutrient-Rich Patch Depends on Tree Species and Possesses a Large Congruency between Intra- and Interspecific Situations

Intercropped relationship change the developmental pattern of apple and white clover

The response of fine root morphological and physiological traits to added nitrogen in Schrenk’s spruce (Picea schrenkiana) of the Tianshan mountains, China

Contact Info

Product

Resources

About