Effect of ozone and sulphur dioxide on mycorrhizae of Pinus halepensis Miller

Díaz, G.; Barrantes, O.; Honrubia, M.; Gracia, Carlos

doi:10.1051/forest:19960404

Cited by 20 publications

(15 citation statements)

References 18 publications

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“…The slightly stimulated root biomass production after the second summer of ozone exposure in the present study is in agreement with many other experiments using relatively low level ozone exposures (Reich et al 1987;Adams and O'Neill 1991;Andersen and Rygiewicz 1995;Díaz et al 1996). Furthermore, ozone exposure had a temporary stimulating effect on mycorrhizas and number of total short roots after the first summer, which was supported by the good structural condition of mycorrhizas, even after the second summer, and agrees with a similar field experiment of Rantanen et al (1994) and with studies of Reich et al (1985) and Qiu et al (1993).…”

Section: Effects Of Ozonesupporting

confidence: 93%

“…Condition of Scots pine fine roots and mycorrhiza after fungicide application and low-level ozone exposure in a 2-year field experiment rhizae are not likely (Díaz et al 1996). Indirect effects of ozone are complicated, because ozone exposure has either increased (Reich et al 1985;Rantanen et al 1994) or decreased (Adams and O'Neill 1991;Pérez-Soba et al 1995) mycorrhizal infection level or had no significant effect on it (Díaz et al 1996).…”

Section: And R O L E S : Anne-marja Manninen · Tarja Laatikainen Toini mentioning

confidence: 94%

“…Indirect effects of ozone are complicated, because ozone exposure has either increased (Reich et al 1985;Rantanen et al 1994) or decreased (Adams and O'Neill 1991;Pérez-Soba et al 1995) mycorrhizal infection level or had no significant effect on it (Díaz et al 1996).…”

Section: And R O L E S : Anne-marja Manninen · Tarja Laatikainen Toini mentioning

confidence: 99%

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Condition of Scots pine fine roots and mycorrhiza after fungicide application and low-level ozone exposure in a 2-year field experiment

Manninen

Laatikainen

Holopainen

1998

Trees

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In a 2-year experiment at an open-air ozone fumigation field, the effects of fungicide application and low-level ozone exposure, single and combined, on fine root and mycorrhiza condition of Scots pine (Pinus sylvestris) seedlings were studied. Two different fungicides, copper oxychloride and propiconazole, with different modes of actions, were used. Propiconazole treatment reduced mycorrhizal infection in both years while copper oxychloride treatment and ozone exposure slightly stimulated mycorrhizal infection after the first year. Different mycorrhizal morphotypes showed different kinds of responses to the two fungicides. Light brown morphotype appeared to be the most sensitive one to propiconazole treatment. After the second year, ectendomycorrhizas disappeared in propiconazole treatment while in control treatment ectendomycorrhizas formed the majority of the light brown morphotype. The root biomass was not affected by fungicide treatments, but ozone exposure increased the total amount of short roots and the fresh weight of propiconazole treated roots. No significant differences in the concentrations of ergosterol, starch and total phenolics in pine roots between treatments were found. However, ergosterol concentration correlated positively with the mycorrhizal infection level. Both fungicides reduced the soil respiration compared to controls. At the ultrastructural level, both fungicides caused increased transparency and gradual granulation and degeneration of cytoplasm in the fungal symbiont of mycorrhizal short roots. Slightly elevated ozone did not have harmful effects on root ultrastructure. These results suggest that fungicides have deleterious effects on the quantity and quality of mycorrhizas in Scots pine roots and also side-effects on non-target soil fungi. Some of these deleterious effects were noticeable only at the ultrastructural level.& k w d : Key words Fungicides · Ozone exposure · Scots pine · Fine root condition · Mycorrhiza& b d y :

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Section: Effects Of Ozonesupporting

confidence: 93%

Section: And R O L E S : Anne-marja Manninen · Tarja Laatikainen Toini mentioning

confidence: 94%

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Condition of Scots pine fine roots and mycorrhiza after fungicide application and low-level ozone exposure in a 2-year field experiment

Manninen

Laatikainen

Holopainen

1998

Trees

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“…Some previous reports have revealed that this plant species is affected by atmospheric pollutants, such as SO 2 and O 3 (Sánchez-Gimeno et al, 1992;Velissariou et al, 1992;Inclán et al, 1993;Wellburn and Wellburn, 1994;Anttonnen et al, 1995). Díaz et al (1996) Agerer (1987Agerer ( -1995 The most obvious conclusion that can be drawn from the data presented here is that no negative effect of acidity was apparent on mycorrhization. On the contrary, ectomycorrhizae were slightly favoured in the most acid treatment (pH 3) in the three experiments carried out, this tendency being clearer in the third experiment.…”

Section: Introductionsupporting

confidence: 50%

Effect of simulated acid rain on mycorrhizae of Aleppo pine (Pinus halepensis Miller) in calcareous soil

Honrubia

Díaz

1996

Ann. For. Sci.

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“…Ozone, besides its phytotoxicity to Aleppo pine (Saitanis, 2003), changes, as well as SO 2 concentrations, the mycorrhizal species of the tree (Diaz et al, 1995). Therefore, changes in mycorrhizal fungal root colonisation may result to nutrient imbalances.…”

Section: Pb Concentration Of Tree Rings Per Decadementioning

confidence: 99%

Trace element accumulation in tree rings of pinus halepensis during the last 140 years

2013

Global NEST Journal

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The trace element analysis of Aleppo pine (Pinus halepensis Mill) as a function of tree age, was achieved by the tree-ring sampling method, in a polluted region of Attica, Greece. The elements quantitatively determined for the last 140 years by atomic spectrophotometry analysis were: Cu, Fe, Zn, Mn and Pb. With the exception of Pb, all other elements tend to increase for the time period of this study. A very interesting fluctuation was noted between the years 1920 to 1960-1970, a time coinciding with the major industrial activity of the area. The decreasing concentration of all elements for the last few decades may be attributed to the increasing environmental awareness as well as respective regulations posed by the government and the E.U. The radial distribution of concentrations in annual tree rings provides adequate information that, in most of the cases, can be related to the history of the tree and the biological processes interacting on its growth. Soil, litter, air deposits and water are important nutrient sources contributing to changes in elemental concentration in the annual rings.

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Effect of ozone and sulphur dioxide on mycorrhizae of Pinus halepensis Miller

Abstract: Summary -Little information exists on the effect of ozone (O 3 )

Cited by 20 publications

References 18 publications

Condition of Scots pine fine roots and mycorrhiza after fungicide application and low-level ozone exposure in a 2-year field experiment

Condition of Scots pine fine roots and mycorrhiza after fungicide application and low-level ozone exposure in a 2-year field experiment

Effect of simulated acid rain on mycorrhizae of Aleppo pine (Pinus halepensis Miller) in calcareous soil

Trace element accumulation in tree rings of pinus halepensis during the last 140 years

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