The occurrence and diversity of ectomycorrhizas of Larix kaempferi seedlings on a volcanic mountain in Japan

Yang, Guoting; Young, Joo; Shibuya, Masato; Yajima, Takashi; Takahashi, K.

doi:10.1017/s0953756298006480

Cited by 20 publications

(11 citation statements)

References 30 publications

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“…Because internode length on Larix seedlings is consistent with the annual growth length of the shoot (Yang et al 1998), the seedling age could be determined by the number of whorls on the main shoot. The growth patterns of previous-year and current-year shoots were measured based on the whorls.…”

Section: Akasaka Et Almentioning

confidence: 99%

Annual growth of invasive Larix kaempferi seedlings with reference to microhabitat and ectomycorrhizal colonization on a volcano

2006

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To investigate the seedling growth of a biologically-invasive larch Larix kaempferi (Lamb.) Carr. on Mount Koma, Japan, seedlings were excavated from three microhabitats (bareground = BA, Salix reinii patch = SP, and Larix understory = LU) in three elevational zones.Seedlings showed the highest ectomycorhhizal (ECM) colonization percentage in the most shaded microhabitat, LU. ECM colonization percentages in BA and SP were found to decrease with decreasing elevation. These results inferred that the ECM colonization percentages were related to seedling growth, particularly, on BA and SP. However, the annual seedling growth was not synchronized with increases in either elevational gradients. Although ECM colonization was most evident in LU, the seedling growth was lowest. We concluded that the effects of ECM colonization on seedling growth were reduced mostly by microhabitat characteristics.

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Section: Akasaka Et Almentioning

confidence: 99%

Annual growth of invasive Larix kaempferi seedlings with reference to microhabitat and ectomycorrhizal colonization on a volcano

2006

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“…Komagatake (Sasaoka et al 1999;Qu et al 2004a;Tsuyuzaki 2005, 2009;Akasaka et al 2007). Yang et al (1998) suggested that the ECM types identified by morphology increased with increasing altitude up to 700 m a.s.l. Moreover, density of regenerated seedlings decreased with increasing altitude (Kondo and Tsuyuzaki 1999;Sasaoka et al 1999;Tsuyuzaki 2005, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…However, little is known about the elemental dynamics in plants grown on the slopes of volcanos. Ectomycorrhizal (ECM) fungi play an important part in the process of woody plant regeneration in such harsh places (e.g., Yang et al 1998;Nara 2006). ECM fungi can dissolve organic compounds by the exudation of enzymes, such as proteolytic and phosphatase enzymes, and can transfer water as well as phosphorus (P) and sometimes nitrogen (N) to the host plants (Chalot and Brun 1998;Plassard and Dell 2010).…”

Section: Introductionmentioning

confidence: 99%

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Elements and ectomycorrhizal symbiosis affecting the growth of Japanese larch seedlings regenerated on slopes of an active volcano in northern Japan

Kayama

Koike

2015

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Key message The growth of Japanese larch seedlings is regulated by the presence of nutrients as well as ectomycorrhizal symbiosis. Abstract The mountain slope of an active volcano is a severe environment for the regeneration of larch (Larix kaempferi Sarg. hereafter larch) seedlings. To determine parameters affecting the growth of larch seedlings, we analyzed stoichiometry of elements in the soils and plant organs, ectomycorrhizal (ECM) colonization, and photosynthetic abilities. These parameters were compared with two different elevations. From nutrient analysis of plant organs from larch seedlings grown on the slope of a volcano, potassium (K) was insufficient compared with the seedlings grown in other habitats. Symbiosis with ECM fungi enabled the uptake of nutrients, especially phosphorous (P) and nitrogen (N). The main factor affecting the differences in relative height growth rate (RHGr) of larch was attributed to ECM colonization. There was a positive relationship between ECM colonization and concentrations of P or N in needles. Larch seedlings with high rates of ECM colonization showed high concentrations of P and N, and had high photosynthetic rates. At lower elevation sites, concentrations of N and K in needles were low with high density of individuals. Moreover, larch showed a high accumulation of aluminum (Al) and iron (Fe) even though the amount of these elements in the soil was small. These seedlings exhibited a suppressed photosynthetic rate and RHGr. Symbiosis with ECM fungi could suppress the excessive uptake of Al and Fe.

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“…Furthermore, the biotic and abiotic environment of the stand (i.e., forest composition, season, rainfall, temperature, exposure), and more especially the soil features (humus and litter type, pH, moisture, fertility) contributes in determining the ECM composition and distribution (Agerer and Göttlein 2003;Colpaert et al 1992;Conn and Dighton 2000;Ferris et al 2000;Koide et al 1998;Mosca et al 2007a,b;Rumberger et al 2004;Scattolin et al 2008;Yang et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution of the ectomycorrhizal community in the top soil of Norway spruce stands

et al. 2008

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The vertical distribution of the ectomycorrhizal (ECM) community was studied in four old high-mountain Norway spruce (Picea abies [L.] Karst.) stands in northern Italy. The aim was to verify if the variability in the community structure could be explained by characteristics of the organic and mineral soil horizons. The community structure was evaluated in terms of both fungal species and their ability to explore soil (exploration types). From the 128 humus proWles sampled over the two study periods, 31 ECM species were recorded. The study demonstrated that the number of both non-vital tips and vital non-mycorrhized tips decreases with soil depth, from organic to mineral horizons, while the number of ectomycorrhizal tips mainly increases with soil depth. A preference was found of some ECM species and exploration types for speciWc organic or mineral soil layers and their features, especially moisture and available nitrogen. These results can help in understanding how the functional role of the single consortia and the ecological features determining this "adaptive diversity" in ectomycorrhizal communities could be of major importance to assess the resilience in forest soil ecosystems.

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The occurrence and diversity of ectomycorrhizas of Larix kaempferi seedlings on a volcanic mountain in Japan

Cited by 20 publications

References 30 publications

Annual growth of invasive Larix kaempferi seedlings with reference to microhabitat and ectomycorrhizal colonization on a volcano

Annual growth of invasive Larix kaempferi seedlings with reference to microhabitat and ectomycorrhizal colonization on a volcano

Elements and ectomycorrhizal symbiosis affecting the growth of Japanese larch seedlings regenerated on slopes of an active volcano in northern Japan

Vertical distribution of the ectomycorrhizal community in the top soil of Norway spruce stands

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