Ectomycorrhizal fungus (Paxillus involutus) and hydrogels affect performance of Populus euphratica exposed to drought stress

Luo, Zhibin; Li, K e; Jiang, Xiangning; Polle, Andrea

doi:10.1051/forest:2008073

Cited by 57 publications

(37 citation statements)

References 38 publications

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“…overall, hydrogel had a marginal effect on root biomass in clay and loam soils). Our results on improved survival time, root and shoot biomass growth during water stress conditions agree with previous studies in different media, [11,32,33,34]. Despite the differences (e.g.…”

Section: Hydrogel Effect On Seedling Survival and Biomass In Water Stsupporting

confidence: 82%

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Orikiriza¹,

Agaba²,

Eilu³

et al. 2013

JEP

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Super Absorbent Polyacrylate (SAP) hydrogels absorb and store water thereby aiding plant establishment when incurporated in the soil. The effect of cross-linked SAP hydrogel amendment on the performance of tree seedlings of Picea abies, Pinus sylivestris and Fagus sylvatica grown in temperate soils under water stress and non-water stress periods was investigated in a green house. The objective was to compare the root and shoot biomass of seedlings of the three species grown in sand, loam and clay soils amended with 0.4% w/w hydrogel in non water stress conditions as well as survival, root and shoot biomass after subjection to water stress. The seedlings were grown for 16 weeks, harvested and shoot as well as root biomass determined before water stress. The seedlings were also subjected to water stress and their biomass assessed at death following the water stress. The results showed that root and shoot biomass were generally higher in hydrogel amended soils compared to the controls. Root and shoot biomass of Fagus sylvatica was lower compared to Picea abies and Pinus sylivestris before water stress. The 0.4% hydrogel amendment significantly increased species' survival in the different soils studied. Although root biomass was higher in hydrogel amended sandy soil compared to other soils, P. sylivestris and F. sylvatica shoot biomass were higher in hydrogel amended clay and loam soils compared to the sandy soil after water stress. Biomass was higher in sand compared to loam and clay soils under non-water and water stressed conditions. Since SAP hydrogel amendment improved the survival and biomass production of tree seedlings before and after water stress, use of SAPs could be promoted to enhance seedling production in water stress and non-water stress environments.

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Section: Hydrogel Effect On Seedling Survival and Biomass In Water Stsupporting

confidence: 82%

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Orikiriza¹,

Agaba²,

Eilu³

et al. 2013

JEP

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“…These benefits relate to the uptake of water and nutrients, enhanced root enzyme activity, a more efficient use of water, a higher photosynthesis rate or greater protection against pathogens. Then, mycorrhized seedlings are expected to overcome outplanting stress in comparison with non-mycorrhizal plants (Luo et al, 2009;Zhu et al, 2008). This is especially important as far as Pinus halepensis Miller is concerned, one of the most planted pine species in the Mediterranean basin.…”

Section: Introductionmentioning

confidence: 99%

Mycorrhization, growth and nutrition of Pinus halepensis seedlings fertilized with different doses and sources of nitrogen

2010

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Ann. For. Sci. 67 (2010) Abstract• Although fertilization is commonly used in nurseries, the effects of high level of nitrogen on Pinus halepensis mycorrhization are still unknown.• The effect of fertilization at different N levels (low-LN: 35 mg/plant; medium-MN: 60 mg/plant; high-HN: 120 mg/plant), differing N sources (ammonium-(NH 4 ) 2 SO 4 ; nitrate-HNO 3 ; ammonium+nitrate-NH 4 NO 3 ) and inoculation with Pisolithus tinctorius and Lactarius deliciosus on the mycorrhization, growth and nutrient status of P. halepensis has been studied.• P. tinctorius 3SR showed higher mycorrhizal ability (100% of mycorrhizal seedlings) than L. deliciosus (nearer to 50%). The application of increasing doses of N resulted in a significant reduction of mycorrhizal seedlings but no differences were observed between NH 4 and NO 3 as N source at the 60 mg N/plant dose applied. The effects of fertilization on growth were mainly observed in uninoculated plants. The use of NH 4 increased growth in non-mycorrhized plants. Nutrient status was similar in all cases except for K concentration, which was higher in plants mycorrhized with P. tinctorius.Interactions between inoculation and fertilization were found, mycorrhizal effects appearing only at LN fertilization.• It is advisable to avoid high doses of N fertilization in order to produce mycorrhizal P. halepensis seedlings. Mots-clés :mycorhize / azote / Pinus halepensis / fertilisation / pépinière Résumé -Mycorhization, croissance et nutrition de semis de Pinus halepensis fertilisés avec différentes doses et sources d'azote.• Bien que la fertilisation soit couramment utilisée dans les pépinières, les effets d'un niveau élevé d'azote sur la mycorhization chez Pinus halepensis sont encore inconnus.• L'effet de la fertilisation à différents niveaux d'azote (LN bas : 35 mg/plant ; MN moyen : 60 mg/plant ; HN élevé : 120 mg/plant), avec différentes sources d'azote (ammonium-(NH 4 ) 2 SO 4 ; nitrate-HNO 3 ; ammonium+nitrate-NH 4 NO 3 ) et inoculation avec Pisolithus tinctorius et Lactarius deliciosus a été étudié pour la mycorhization, la croissance et l'état nutritionnel du Pinus halepensis.• P. tinctorius 3SR a montré une aptitude plus élevée à la mycorhization (100 % des plants mycorhizés) que L. deliciosus (proche de 50 %). L'application de doses croissantes d'azote a entraîné une réduction significative des semis mycorhizés mais aucune différence n'a été observée entre NH 4 et NO 3 comme source de N à une dose appliquée de 60 mg N/plant. Les effets de la fertilisation sur la croissance ont été principalement observés chez les plants non inoculés. L'utilisation de NH 4 augmente la croissance chez les plants non mycorhizés. L'état nutritionnel a été similaire dans tous les cas sauf pour la concentration de K, qui est plus élevée chez les plants mycorhizés par P. tinctorius. Des interactions entre inoculation et fertilisation ont été trouvées, les effets mycorhiziens n'apparaissant qu'à des fertilisations LN.• Il est conseillé d'éviter de fortes doses de fertilisation azotée pour pro...

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“…In other words, hydrogel functions as an additional water reservoir for the soil-plantair system (Luo et al, 2009). Due to these properties, hydrogel improves water use efficiency (irrigation effectiveness in terms of plant yield) and dry matter production of plants under drought affected areas (Luo et al, 2009 andShi et al, 2010). Moreover, hydrogel may last a few years in the soil before they are degraded into non-toxic components (Luo et al, 2009).…”

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confidence: 99%

“…This water-absorbing polymer or soil amendment may enhance plant survival through its ability to imbibe large amounts of water and exhibit high permeability to oxygen, nutrients, and water soluble metabolites, particularly in sandy soils (Al-Humaid, 2005, Al-Humaid and Moftah, 2007, Thomas, 2008Nguyen et al, 2009, Beniwal et al, 2010, Beniwal et al, 2011and Guyomard-Lack et al, 2012. In other words, hydrogel functions as an additional water reservoir for the soil-plantair system (Luo et al, 2009). Due to these properties, hydrogel improves water use efficiency (irrigation effectiveness in terms of plant yield) and dry matter production of plants under drought affected areas (Luo et al, 2009 andShi et al, 2010).…”

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confidence: 99%

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Improving some Physical Properties of Sandy Soil and Conocarpus erectus L. Plant Growth by the Application of Hydrogel

2013

Egypt.J. Soil Sci.

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OIL physical properties of a growing medium are important ……. for optimal plant growth. The present factorial pot experiment was carried out at the Faculty of Agriculture, Cairo University, Giza, Egypt, during two successive seasons of 2010 and 2011. The study aimed at investigating the effects of synthetic commercial amendment (hydrogel) levels applied under two irrigation rates, to assess their influence on some sandy soil physical properties and buttonwood (Conocarpus erectus L.) seedlings growth traits. The irrigation rates were 65 and 35% of the available soil moisture depletion (ASMD), whereas the hydrogel levels were 0.00 (control), 0.05, 0.10 and 0.20%. Soil physical properties were evaluated by determining the total porosity, field capacity, wilting point, available water, and soil bulk density. Moreover, the plant height, root length, shoots and roots fresh and dry weights and shoots: roots ratio, as expressions of seedlings growth responses, were also measured. Generally, the sandy soil physical properties as well as the seedlings shoot and root growths were improved by increasing hydrogel concentration in the soil when compared to their controls. The two irrigation rates also affected both of the soil properties and the seedlings growth. Furthermore, the highest concentration of the hydrogel amendment under 35% ASMD prolonged the soil water loss time; increased the field capacity, which reflected on the soil available water; encouraged formation of aggregates that, in turn, decreased the soil bulk densities; and hence improved the seedling shoots and roots growth biometrics. This study demonstrates also that the addition of hydrogel to planting medium under different irrigation rates increases water use efficiency by preventing applied moisture from infiltrating beyond plant root zones and maximizing the portion of applied water available for plant uptake. Thereby amended sandy soil with hydrophilic-gel can be used in arid and semi-arid areas to provide a better environment for seedlings to grow.

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Ectomycorrhizal fungus (Paxillus involutus) and hydrogels affect performance of Populus euphratica exposed to drought stress

Cited by 57 publications

References 38 publications

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Mycorrhization, growth and nutrition of Pinus halepensis seedlings fertilized with different doses and sources of nitrogen

Improving some Physical Properties of Sandy Soil and Conocarpus erectus L. Plant Growth by the Application of Hydrogel

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