Analysis of monoterpene variation in natural stands and plustrees of Pinus sylvestris in Finland.

Muona, Outi; Hiltunen, R.; Shaw, Douglas V.; Morén, Erkki

doi:10.14214/sf.a15435

Cited by 18 publications

(22 citation statements)

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“…This is consistent with the chemotype being a genetically determined property (e.g. Muona et al, 1986), not influenced by environmental factors.…”

Section: Chemodiversity and Terpenoid Emissionssupporting

confidence: 87%

“…It is obvious that the solutions of clustering are highly material dependent: the cutting limits for high and low 3 -carene emitters can be totally different when clustering is used with some other material. It is worth noticing that both Muona et al (1986) and Pohjola (1993) used 90 % as a cutting limit for high 3 -carene emitter, but in our dataset trees with such a high 3 -carene proportion were not found. However, it seems that 3 -carene seems to be the compound characterizing the most striking differences between different kinds of emitters, and then the ratio between 3 -carene and pinenes could be used as an index for a chemotype.…”

Section: Chemodiversity and Terpenoid Emissionsmentioning

confidence: 67%

“…A strong heritability in Swedish Scots pines was demonstrated by Baradat et al (1988) for 3 -carene, myrcene, limonene and β-phellandrene, while pinenes and sabinene varied more with environmental factors. The southern pine populations contained more of the high 3 -carene chemotype trees than northern populations in both Sweden and Finland (Yazdani et al, 1985;Muona et al, 1986;Pohjola, 1993;Manninen et al, 2002), whereas limonene content in pine needles increased towards north (Nerg et al, 1994). This variation was mostly found in natural stands and it was suggested to depend on ecological factors influencing adaptation to differing conditions between south and north (Muona et al, 1986; Pohjola et al, (Table 1). 1993), such as day length and length of growing season.…”

Section: Chemodiversity and Terpenoid Emissionsmentioning

confidence: 99%

“…The southern pine populations contained more of the high 3 -carene chemotype trees than northern populations in both Sweden and Finland (Yazdani et al, 1985;Muona et al, 1986;Pohjola, 1993;Manninen et al, 2002), whereas limonene content in pine needles increased towards north (Nerg et al, 1994). This variation was mostly found in natural stands and it was suggested to depend on ecological factors influencing adaptation to differing conditions between south and north (Muona et al, 1986; Pohjola et al, (Table 1). 1993), such as day length and length of growing season. Environmental factors such as light and temperature are accounted for in the present empirical algorithms describing terpene emission rates (e.g.…”

Section: Chemodiversity and Terpenoid Emissionsmentioning

confidence: 99%

“…This could have lead to large variation in genetic background of seeds. Muona et al (1986) reported that in the "plustrees", which are selected particularly for forest tree breeding, there was no geographical pattern related to 3 -carene emissions. According to both Muona et al (1986) and Pohjola (1993) north-south variation in the incidence of high 3 -carene emitters was found in natural stands.…”

Section: Chemodiversity and Stand Historymentioning

confidence: 99%

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Chemodiversity of a Scots pine stand and implications for terpene air concentrations

et al. 2012

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Abstract. Atmospheric chemistry in background areas is strongly influenced by natural vegetation. Coniferous forests are known to produce large quantities of volatile vapors, especially terpenes. These compounds are reactive in the atmosphere, and contribute to the formation and growth of atmospheric new particles.Our aim was to analyze the variability of mono-and sesquiterpene emissions between Scots pine trees, in order to clarify the potential errors caused by using emission data obtained from only a few trees in atmospheric chemistry models. We also aimed at testing if stand history and seed origin has an influence on the chemotypic diversity. The inherited, chemotypic variability in mono-and sesquiterpene emission was studied in a seemingly homogeneous 48 yr-old stand in Southern Finland, where two areas differing in their stand regeneration history could be distinguished. Sampling was conducted in August 2009. Terpene concentrations in the air had been measured at the same site for seven years prior to branch sampling for chemotypes.Two main compounds, α-pinene and 3 -carene formed together 40-97 % of the monoterpene proportions in both the branch emissions and in the air concentrations. The data showed a bimodal distribution in emission composition, in particular in 3 -carene emission within the studied population. 10 % of the trees emitted mainly α-pinene and no 3 -carene at all, whereas 20 % of the trees where characterized as high 3 -carene emitters ( 3 -carene forming >80 % of total emitted monoterpene spectrum). An intermediate group of trees emitted equal amounts of both α-pinene and 3 -carene. The emission pattern of trees at the area established using seeding as the artificial regeneration method differed from the naturally regenerated or planted trees, being mainly high 3 -carene emitters. Some differences were also seen in e.g. camphene and limonene emissions between chemotypes, but sesquiterpene emissions did not differ significantly between trees. The atmospheric concentrations at the site were found to reflect the species and/or chemodiversity rather than the emissions measured from any single tree, and were strongly dominated by α-pinene. We also tested the effect of chemodiversity on modeled monoterpene concentrations at the site and found out that since it significantly influences the distributions and hence the chemical reactions in the atmosphere, it should be taken into account in atmospheric modeling.

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“…This is consistent with the chemotype being a genetically determined property (e.g. Muona et al, 1986), not influenced by environmental factors.…”

Section: Chemodiversity and Terpenoid Emissionssupporting

confidence: 87%

Section: Chemodiversity and Terpenoid Emissionsmentioning

confidence: 67%