Ectomycorrhizae in reforestation

Kropp, Bradley R.; Langlois, C. G.

doi:10.1139/x90-061

Cited by 114 publications

(71 citation statements)

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“…It is well known that the inclusion of a mycorrhization step in plant production has positive effects on the survival of seedlings when they are planted out [20,30,33]. However, the incorporation of a mycorrhization step in seedling productions in nurseries is not a common practice in Spain.…”

Section: Discussionmentioning

confidence: 99%

Mycorrhization of Pinus halepensis Mill. and Pinus pinaster Aiton seedlings in two commercial nurseries

et al. 2003

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-Two Mediterranean pine species (Pinus halepensis and Pinus pinaster) and seven fungi species (Pisolithus tinctorius, Lactarius deliciosus, L. sanguifluus, Suillus mediterranensis, S. collinitus, S. bellinii, and Rhizopogon roseolus) were selected for a mycorrhization study in two nurseries of SE Spain. Two types of inoculum (spore suspension and mycelium inoculum) were used on 3 700 pine seedlings. The aim of the study was to ascertain the influence of two different substrata (composted pine bark and fertilized-peat-vermiculite) on the mycorrhization rate and pine seedlings height. The results pointed out significantly differences between both substrata. In general, the best results were obtained with fertilized-peat-vermiculite-substratum although both the mycorrhization rate and seedlings height varied according to fungi species and the inoculum type used. Pinus halepensis

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Section: Discussionmentioning

confidence: 99%

Mycorrhization of Pinus halepensis Mill. and Pinus pinaster Aiton seedlings in two commercial nurseries

et al. 2003

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“…Different families of loblolly pine have been shown to differ in their rates of root colonization by Pisolithus tinctorius (Adams & O'Neill, 1991), Pisolithus tinctorius (Pers,) Coker & Couch (Sclerodermataceae) is an ectomycorrhizal fungus that has received considerable interest in recent years owing to its colonization of a variety of habitats and its association with a broad range of host trees (Grand, 1976;Marx, 1977;Kropp & Langlois, 1990), In fact, P. tinctorius can form mycorrhizas with most tree species that form ectomycorrhiza (Marx, 1977), P. tinctorius occurs on every continent except Antarctica and is one of few ectomycorrhizal fungal species that regularly colonize stressed habitats such as mine spoils (Grand, 1976;Marx, 1977), In the U,S,, P. tinctoi'ius occurs in at least 38 states and on both conifer and broadleaf tree species (Grand, 1976;Marx, 1977), In the southeastern U,S,, it commonly forms mycorrhizas with Pinus spp,, including P. taeda (Grand, 1976;Marx, 1977) and has been found associated with P. taeda throughout the range of this host (Marx, 1977),…”

Section: Study Speciesmentioning

confidence: 99%

The role of mycorrhizas in the response of Pinus taeda seedlings to elevated CO₂

Lewis

Strain

1996

New Phytologist

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from two populations oi Pinus taeda L. were examined. Seedlings from a North Carolina and a Florida population were grown in sterile soil in a full-factorial experiment with one of two phosphorus treatments (low P, high P) and at one of two COj partial pressures . One half of the seedlings were inoculated with Pisolithus tinctorius (Pers.) Coker & Couch hyphae and spores. Seedlings were harvested 60, 90 and 120 d after emergence. Ele^-ated COj significantly increased total seedling dry mass in all treatments at all three harvests. Phosphorus limitation reduced seedling growth, and mycorrhizas increased seedling growth in seedlings limited by phosphorus supply. Generally, however, there were no interactions between CO.,, phosphorus supply and mycorrhiza! status on dry mass of seedlings. Mycorrhizas probably did not affect the response of dry mass to elevated CO, because phosphorus limitation did not reduce response of dry mass to elevated CO.,. Phosphoruslimited seedlings responded to elevated CO., as a result of increased phosphorus uptake, resulting from increased total root dry mass, and increased phosphorus use efficiency. Although mycorrhizal colonization did not affect the response of biomass to elevated CO.,, it significantly reduced the response of needle area. As a result, specific leaf area (leaf area per unit plant hiomass) was lower in mycorrhizal seedlings grown in elevated CO., than in mycorrhizal seedlings grown in ambient CO,. Because there were no effects on relative growth rate or seedling dry mass, reductions in specific leaf area suggest that ele\-ated CO, reduced the relative cost of the symbiosis.

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“…Agricultural soils are generally altered by over-fertilization and their structure, chemical composition and microbial communities might not be suitable for the establishment of forest trees [13,32]. Also, the abundance of competing weeds is especially detrimental in Mediterranean conditions under short water availability [2,30].…”

Section: Introductionmentioning

confidence: 99%

Field performance of Pinus pinea and P. halepensis seedlings inoculated with Rhizopogon spp. and outplanted in formerly arable land

et al. 2004

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-The effect of mycorrhizal inoculation on field performance of Pinus pinea and P. halepensis seedlings, established in formerly arable land, was evaluated for up to 43 months after outplanting. Containerized seedlings of both tree species were produced in two different substrates, peat:bark and peat:vermiculite, and inoculated with spores of either Rhizopogon luteolus or R. roseolus. One month prior to outplanting, more than 50% of P. pinea short roots were colonized by either inoculated fungi, whereas a maximum of 32% of P. halepensis short roots were colonized by R. roseolus. Seedlings inoculated with R. roseolus were generally taller than non-inoculated ones at transplantation. However, significant differences disappeared or remained small in absolute values during the monitoring period (less than 7 cm in the best case, 34 months after outplanting). Inoculation with R. roseolus increased in 20% the survival of P. pinea seedlings over noninoculated ones after 43 months in the field. Under the experimental conditions tested, these differences in survival were large enough to justify inoculation costs since spore inoculation with Rhizopogon species in the nursery is easy and inexpensive. Transplant Stress Indices allowed to detect overall post-transplantation stress and further recovery periods although no clear relationship between inoculation and planting check was detected.afforestation / field performance / mycorrhizal inoculation / Pinus / Rhizopogon Résumé -Performances de Pinus pinea et P. halepensis inoculés avec Rhizopogon spp. et transplantés sur un ancien terrain agricole. L'effet de l'inoculation mycorhizienne sur la croissance et la survie de Pinus pinea et P. halepensis établis sur un ancien terrain agricole a été évalué pendant 43 mois après la mise en place de la plantation. Les plants des deux espèces ont été produits en conteneur sur deux substrats différents : tourbe:écorce et tourbe:vermiculite, et inoculés avec des spores de Rhizopogon luteolus, ou R. roseolus. Un mois avant la plantation, tous les plants de P. pinea inoculés avaient plus de 50 % des racines courtes colonisées par le champignon inoculé sans distinction d'espèce ou de substrat. Les plants de P. halepensis n'avaient au maximum que 32 % des racines courtes colonisées par R. roseolus. Les plants inoculés avec R. roseolus étaient généralement les plus hauts au moment de la transplantation. Ces différences significatives sont néanmoins restées petites voire ont disparu au cours du temps (moins de 7 cm, dans le meilleur cas, 34 mois après l'établissement de la plantation). La survie des plants de P. pinea inoculés avec R. roseolus a augmenté de 20 % par rapport à celle des plants témoins après 43 mois en plantation. Dans les conditions expérimentées, les différences de survie étaient assez grandes pour justifier le coût de l'inoculation, surtout parce que l'inoculation avec des spores de champignons du genre Rhizopogon est facile à appliquer en pépinière. L'utilisation d'Index de Stress après transplantation ont permis de ...

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Ectomycorrhizae in reforestation

Cited by 114 publications

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Mycorrhization of Pinus halepensis Mill. and Pinus pinaster Aiton seedlings in two commercial nurseries

Mycorrhization of Pinus halepensis Mill. and Pinus pinaster Aiton seedlings in two commercial nurseries

The role of mycorrhizas in the response of Pinus taeda seedlings to elevated CO₂

Field performance of Pinus pinea and P. halepensis seedlings inoculated with Rhizopogon spp. and outplanted in formerly arable land

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Ectomycorrhizae in reforestation

Cited by 114 publications

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Mycorrhization of Pinus halepensis Mill. and Pinus pinaster Aiton seedlings in two commercial nurseries

Mycorrhization of Pinus halepensis Mill. and Pinus pinaster Aiton seedlings in two commercial nurseries

The role of mycorrhizas in the response of Pinus taeda seedlings to elevated CO2

Field performance of Pinus pinea and P. halepensis seedlings inoculated with Rhizopogon spp. and outplanted in formerly arable land

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The role of mycorrhizas in the response of Pinus taeda seedlings to elevated CO₂