Is N-resorption efficiency related to secondary compounds and leaf longevity in coexisting plant species of the arid Patagonian Monte, Argentina?

2010 ◽  
Vol 36 (4) ◽  
pp. 395-402 ◽  
Author(s):  
MARÍA VICTORIA CAMPANELLA ◽  
MÓNICA B. BERTILLER
Keyword(s):  
Plant Species ◽  
Secondary Compounds ◽  
Leaf Longevity ◽  
Resorption Efficiency ◽  
N Resorption ◽  
N Resorption Efficiency

N resorption efficiency and proficiency in response to winter cold in three evergreen species

2015 ◽  
Vol 394 (1-2) ◽  
pp. 87-98 ◽  
Author(s):  
Patricia González-Zurdo ◽  
Alfonso Escudero ◽  
Sonia Mediavilla
Keyword(s):  
Resorption Efficiency ◽  
Evergreen Species ◽  
Winter Cold ◽  
N Resorption ◽  
N Resorption Efficiency

scholarly journals Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub

2020 ◽  
Vol 11 ◽  
Author(s):  
Lilong Wang ◽  
Yulin Li ◽  
Yulong Duan ◽  
Jie Lian ◽  
Yongqing Luo ◽  
...  
Keyword(s):  
Reproductive Effort ◽  
Fruit Production ◽  
Nutrient Resorption ◽  
N Recovery ◽  
N Addition ◽  
Resorption Efficiency ◽  
Temporal Separation ◽  
N Resorption ◽  
N Resorption Efficiency ◽  
Leaf N

Caragana microphylla is a sand-fixing leguminous shrub with strong resistance to drought, cold, and low soil fertility. As a result, it plays an essential role in combating desertification in northern China, but little is known about its nutrient budget. Nutrient resorption is a key process in plant nutrient conservation and has marked ecological implications for plant fitness and ecosystem nutrient cycling. We studied the effects of both nitrogen (N) addition and reproductive effort on leaf N resorption of C. microphylla in a temperate semi-arid sandy land in China. The results showed that sprouting of the early leaves from over-wintered buds employs a strategy for slow returns on nutrient investment with smaller specific leaf area (SLA) and higher N resorption efficiency, whereas the late leaves, which sprout from current-year buds, employ a strategy for quick returns on nutrient investment with higher SLA and lower N resorption efficiency. N addition significantly increased the N resorption efficiency from early leaves while exerting no impact on late leaves, suggesting that the increased N recovery from early leaves is done to sustain the high N demands of late leaves. Reproductive effort did not affect the N resorption from early or late leaves due to the temporal separation between fruit production and leaf senescence. Taken together, our results demonstrate that C. microphylla has evolved different investment strategies for leaf N in early and late leaves to conserve nutrients and facilitate its growth in desertified environments.

scholarly journals Different responses of plant N and P resorption to overgrazing in three dominant species in a typical steppe of Inner Mongolia, China

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9915
Author(s):  
Zhen Wang ◽  
Saheed Olaide Jimoh ◽  
Xiliang Li ◽  
Baoming Ji ◽  
Paul C. Struik ◽  
...  
Keyword(s):  
Plant Species ◽  
Nutrient Resorption ◽  
Grass Species ◽  
Resorption Efficiency ◽  
Typical Steppe ◽  
P Concentration ◽  
N Resorption ◽  
Senesced Leaves ◽  
Dominant Grass ◽  
Leaf N

Nutrient resorption from senesced leaves is an important mechanism for nutrient conservation in plants. However, little is known about the effect of grazing on plant nutrient resorption from senesced leaves, especially in semiarid ecosystems. Here, we evaluated the effects of grazing on N and P resorption in the three most dominant grass species in a typical steppe in northern China. We identified the key pathways of grazing-induced effects on N and P resorption efficiency. Grazing increased N and P concentrations in the green leaves of Leymus chinensis and Stipa grandis but not in Cleistogenes squarossa. Both L. chinensis and S. grandis exhibited an increasing trend of leaf N resorption, whereas C. squarrosa recorded a decline in both leaf N and P resorption efficiency under grazing. Structural equation models showed that grazing is the primary driver of the changes in N resorption efficiency of the three dominant grass species. For L. chinensis, the P concentration in green and senesced leaves increased the P resorption efficiency, whereas the senesced leaf P concentration played an important role in the P resorption efficiency of C. squarrosa. Grazing directly drove the change in P resorption efficiency of S. grandis. Our results suggest that large variations in nutrient resorption patterns among plant species depend on leaf nutritional status and nutrient-use strategies under overgrazing, and indicate that overgrazing may have indirect effects on plant-mediated nutrient cycling via inducing shifts in the dominance of the three plant species.

scholarly journals Leaf N resorption efficiency and litter N mineralization rate have a genotypic tradeoff in a silver birch population

Ecology ◽  
2018 ◽  
Vol 99 (5) ◽  
pp. 1227-1235 ◽  
Author(s):  
Juha Mikola ◽  
Tarja Silfver ◽  
Ulla Paaso ◽  
Boy J. M. H. Possen ◽  
Matti Rousi
Keyword(s):  
N Mineralization ◽  
Silver Birch ◽  
Mineralization Rate ◽  
Resorption Efficiency ◽  
N Resorption ◽  
N Resorption Efficiency ◽  
Leaf N

scholarly journals Seedling size and nutrient availability in the fall determine nitrogen resorption and storage compound allocation in Quercus variabilis

2021 ◽  
Author(s):  
Jiaxi Wang ◽  
Mercedes Uscola ◽  
Guolei Li
Keyword(s):  
Growth Phase ◽  
Resorption Efficiency ◽  
Shoot Height ◽  
Seedling Size ◽  
Nitrogen Resorption ◽  
Quercus Variabilis ◽  
Nutrient Reserve ◽  
Terminal Buds ◽  
N Resorption ◽  
N Resorption Efficiency

Abstract Aims Soil fertility and resorption of leaf compounds in the fall can influence resource buildup in plants. However, whether intraspecific differences in seedling size can affect nutrient reserve buildup is unknown. This study examined the effects of seedling size and fall fertilization on the uptake and resorption of nitrogen (N), as well as the allocation of non-structural carbohydrates (NSC) and N in cultivated Quercus variabilis Blume. Methods After the formation of terminal buds (T1), seedlings were stratified into small (shoot height < 30 cm) and large seedlings. During the hardening period, seedlings were treated with three different rates of 15N-enriched fertilizer (0, 12, or 24 mg N seedling− 1) and monitored until leaf fall (T2). Results Small seedlings had lower N resorption efficiency and resorbed proportionally less N than large seedlings. Fall fertilization notably improved N and NSC reserves, without reducing N resorption efficiency. Large seedlings allocated proportionally less N to leaves than small seedlings although both sizes seedlings absorbed similar amounts of N from fall fertilization. The priority perennial organ for NSC allocation was roots, while N allocation was dependent on the phenological growth stage of the seedling. Roots were prioritized during the rapid growth phase, while stems were prioritized during the hardening period. Conclusions Under same fertilizer regime during the growth phase, large seedlings tends to have lower N concentration and have higher resorption efficiency compare to small seedlings, fall fertilization can increase N storage in large seedlings and NSC levels in both seedling sizes, without affecting growth.

Effects of simulated herbivory on photosynthesis and N resorption efficiency in Quercus pyrenaica Willd. saplings

Trees ◽  
2008 ◽  
Vol 22 (6) ◽  
pp. 785-793 ◽  
Author(s):  
Silla Fernando ◽  
Fleury Marina ◽  
Mediavilla Sonia ◽  
Escudero Alfonso
Keyword(s):  
Quercus Pyrenaica ◽  
Resorption Efficiency ◽  
Simulated Herbivory ◽  
N Resorption ◽  
N Resorption Efficiency

Pine caterpillar outbreak and stand density impacts on nitrogen and phosphorus dynamics and their stoichiometry in Masson pine (Pinus massoniana) plantations in subtropical China

2016 ◽  
Vol 46 (5) ◽  
pp. 601-609 ◽  
Author(s):  
Xiang-Min Fang ◽  
Lynn M. Christenson ◽  
Fang-Chao Wang ◽  
Ju-Ping Zeng ◽  
Fu-Sheng Chen
Keyword(s):  
Stand Density ◽  
Pinus Massoniana ◽  
High Density ◽  
P Availability ◽  
Low Density ◽  
Resorption Efficiency ◽  
Masson Pine ◽  
N Concentration ◽  
N Resorption ◽  
N Resorption Efficiency

Masson pine caterpillar (MPC, Dendrolimus punctatus Walker) outbreaks periodically occur in Masson pine (Pinus massoniana Lamb.) plantations in southern China; however, their effects on nutrient cycling remain unclear. In 2011, an MPC outbreak occurred in pine plantations with different stand densities, which facilitated a comparison of nitrogen (N) and phosphorus (P) cycling dynamics. Monitoring of soil and foliar nutrients from pre- to post-outbreak years (i.e., from 2010 to approximately 2012) indicated that soil NO3–-N concentration and fluxes were higher after the outbreak in low-density plantations, whereas soil NH4+-N and P availability varied minimally and were not different between the high- and low-density sites. Pine foliage responses to the MPC outbreak were dependent on stand density. At the high-density site, foliar N increased by 40% with an increase of 25% in N resorption efficiency and by approximately 200%–300% in P resorption efficiency, whereas there was an increase of 50% N concentration, a 65% increase in N resorption efficiency, and a >500% increase in P resorption efficiency at the low-density site. Overall, soil nutrients were higher in low-density than high-density plantations, whereas leaf nutrient resorption had the opposite results after an MPC outbreak. The effects of a periodic MPC outbreak could increase plant N:P stoichiometry in these plantations, particularly in the denser stands.

scholarly journals Leaf life span and nitrogen content in semideciduous forest tree species (Croton priscus and Hymenaea courbaril)

2004 ◽  
Vol 61 (4) ◽  
pp. 462-465 ◽  
Author(s):  
Claudia Regina Baptista Haddad ◽  
Damiani Pereira Lemos ◽  
Paulo Mazzafera
Keyword(s):  
Life Span ◽  
Forest Tree ◽  
Leaf Life Span ◽  
Resorption Efficiency ◽  
Hymenaea Courbaril ◽  
Specific Leaf Mass ◽  
Use Efficiency ◽  
N Resorption ◽  
N Use ◽  
N Resorption Efficiency

In comparison to deciduous species, evergreen plants have lower leaf nutrient contents and higher leaf life span, important mechanisms for nutrient economy, allowing the colonization of low fertility soils. Strategies to conserve nitrogen in two semideciduous tropical forest tree species, with different leaf life spans were analyzed. The hypothesis was the fact that the two species would present different nitrogen conservation mechanisms in relation to chemical (total nitrogen, protein, chlorophyll, and proteolytic activity), functional (leaf life span, N-use efficiency, and N-resorption efficiency), morphological (specific leaf mass) leaf characteristics, and total nitrogen in the soil. Hymenaea courbaril L. presented lower nitrogen compounds in leaves, longer leaf life span, higher N-use efficiency, and higher specific leaf mass, while absorbing proportionally less nitrogen from the soil than Croton priscus Croizat. These characteristics can contribute for a better nitrogen economy strategy of H. courbaril. No relationship was found between leaf life span and N resorption efficiency, nor between leaf life span, protease activity and nitrogen mobilization. The electrophoretic profiles of proteolytic enzymes in young leaves of the two species presented more bands with enzymatic activity than other kinds of leaves.

scholarly journals   Nitrogen and phosphorus resorption of Artemisia scoparia, Chenopodium acuminatum, Cannabis sativa, and Phragmites communis under nitrogen and phosphorus additions in a semiarid grassland, China

2012 ◽  
Vol 58 (No. 10) ◽  
pp. 446-451 ◽  
Author(s):  
L.J. Li ◽  
D.H. Zeng ◽  
R. Mao ◽  
Z.Y. Yu
Keyword(s):  
Cannabis Sativa ◽  
Nutrient Resorption ◽  
Soil N ◽  
Resorption Efficiency ◽  
Phragmites Communis ◽  
Nitrogen And Phosphorus ◽  
Resorption Proficiency ◽  
Artemisia Scoparia ◽  
N Resorption ◽  
P Addition

A factorial nitrogen (N) &times; phosphorus (P) addition experiment was conducted to evaluate responses of leaf nutrient resorption to increased soil N and P availability in a semiarid grassland in Keerqin Sandy Lands, China. Four plant species were selected, among which Artemisia scoparia and Chenopodium acuminatum were dominant species in the control and P-added plots, and Cannabis sativa and Phragmites communis were dominant in the N- and N + P-treated plots. Results showed that N and P resorption varied substantially among species (P &lt; 0.01). A general trend of decrease in N resorption efficiency (NRE) and N resorption proficiency (NRP) was observed in response to increased soil N availability for all species, except P. communis only for NRE. Similarly, P resorption proficiency (PRP) decreased in response to P addition for all species, whereas P resorption efficiency (PRE) was not affected by P addition. Species responded differently in terms of PRE and PRP to N addition, whereas no changes in NRE and NRP occurred in response to P addition except P. communis for NRE. Our results suggest that increased soil nutrient availability can influence plant-mediated nutrient cycling directly by changing leaf nutrient resorption and indirectly by altering species composition in the sandy grassland. &nbsp;

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