Biochemical response of Norway spruce (Picea abies (L.) Karst.) towards 14-month exposure to ozone and acid mist: Part I—Effects on polyphenol and monoterpene metabolism

Heller, Werner; Rosemann, Detlef; Oßwald, Wolfgang; Benz, B.; Schönwitz, Roswitha; Lohwasser, Karin; Kloos, Martina; Sandermann, Heinrich

doi:10.1016/0269-7491(90)90057-j

Cited by 48 publications

(28 citation statements)

References 14 publications

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“…Reconciling reports of increased cinnamyl alcohol dehydrogenase activity in Og-treated conifer needles (Sandermann et al, 1989;Heller et al, 1990;Langebartels et al, 1990;Galliano et al, 1993) witb the results of our study and others (Tingey et al, 1976;Bonello et al, 1993), which showed little change in lignin content in needles of several pine species treated with O.j, is problematic. Elevated cinnamyl alcohol dehydrogenase activity indicates involvement of the lignin pathway in plant responses to air pollution and may function as a molecular stress marker for O^ (Galliano et al, 1993).…”

Section: Discussioncontrasting

confidence: 66%

“…By contrast, Bonello et al (1993) found that levels of methanolsoluble and bound phenolics in primary needles of Scots pine seedlings treated with 200 nl 1"' O3 for 8 h daily for 28 d in controlled environments were tbe same as control levels. Kainulainen et al (1994) reported a marginally significant increase in total phenolic concentration in 70 ^' o acetone extracts of Scots pine shoots from seedlings treated with 100 nl r^ O^ 6 h daily for 4 wk in controlled environments. However, no significant changes in catechin concentration were detected.…”

Section: Discussionmentioning

confidence: 95%

“…, acetophenones (Kicmski Phenolic compounds accumulate in tbe foliage of et al, 1988) and proanthocyanidins (condensed many plants following exposure to the air pollutant, tannins) (Jordan et al, 1991). ozone (O3).…”

mentioning

confidence: 99%

“…Phenylpro-Norway spruce [Picea abies (L.) Karst. ] and Scots panoid derivatives reported to accumulate in conifer pine (P. sylvestris L.) suggested that increased needles in response to O^ include hydroxycinnamic lignification might be expected (Sandermann et al, acids (Kicinski et al, 1988), stilbenes (Sandermann 1989;Heller et al, 1990;Langebartels et al, 1990;Rosemann et al, 1991), flavonoids Galliano ?/a/., 1993). However, no effect of O3 on lignin content was detected in ponderosa pine (P. ponderosa) shoots (Tingey, Wilhour & Standley, 1976) or Scots pine needles {Bonello, Heller & Sandermann, 1993) in field and controlled-environment studies, respectively.…”

mentioning

confidence: 99%

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Catechin, proanthocyanidin and lignin contents of loblolly pine (Pinus taeda) needles after chronic exposure to ozone

1996

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SUMMARYConcentrations of soluble and bound phenolic cotnpounds were measured in needles of 3-yr-old loblolly pme {Pinus taeda L.) trees exposed from May to November 1993 to a range of ozone (O3) concentrations in open-top fidd chambers. The treatments were charcoal-filtered air (CF). non-filtered air (NF), and NF air with O, added at 1-5 times (NF 1-5) and 2-0 times (NF 2-0) the ambient O, concentration for 12 h daily. Average daily (0800-2000 hours) O3 concentrations in the CF.NF, NF ISandNF 2 0 treatments were r. 29, 47, 76 and 98 nl 1"', respectively, for the 140 d treatment period. At tbe end of the treatment period, total phenolic and proanthoc\anidin concentrations in the previous year's needles were 25-29'\, higher in the NF 2'0 treatment compared v\ ith the lower O., treatments. Catechin concentration increased in the previous year's needles by as mucb as 81 ''" between the NF 2-0 treatment and tbe lower O^ treatments. Catechin is an effective antioxidant, and elevated levels migbt confer some protection against O^ injury. No significant differences in total phenolics and proanthocyanidins in the previous year's needles were detected among the remaining O^ treatments, or among any C>. , treatment for tbe current year's needles. Lignin content in needles of botb years was not significantly affected by O,j exposure. Changes in the phenolic content of older needles in response to elevated O^ could alter plant-patbogen interactions and slow down microbial decomposition, which could contribute to a decline in site soil quality.

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Section: Discussioncontrasting

confidence: 66%

Section: Discussionmentioning

confidence: 95%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Catechin, proanthocyanidin and lignin contents of loblolly pine (Pinus taeda) needles after chronic exposure to ozone

1996

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“…Por outro lado, os níveis de pinocembrina e catequina não se alteraram significativamente com este tratamento 148 . Alterações no conteúdo de alguns polifenóis, como p-hidróxi-acetofenona, piceína (Figura 8c) e 3-O-glicosil-kaempferol foram observados nas folhas de abeto (Picea abies), porém resultados conflitantes foram obtidos 148,149 . A fumigação das folhas de soja (Glycine max) com O 3 (de 0,25 a 1 μL L -1 por 3 h), paralelamente aos danos foliares, levou a um maior acúmulo dos isoflavonóides cumestrol (Figura 8a), daidzeína (Figura 8b) e sojagol; NO 2 e SO 2 também causaram um acúmulo, porém bem menor, destes isoflavonóides 150 .…”

Section: Poluição Atmosféricaunclassified

Plantas medicinais: fatores de influência no conteúdo de metabólitos secundários

Gobbo‐Neto¹,

Lopes²

2007

Quím. Nova

921

364

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. do Café, s/n, 14040-903 Ribeirão Preto -SP, BrasilRecebido em 7/7/05; aceito em 11/4/06; publicado na web em 31/10/06 MEDICINAL PLANTS: FACTORS OF INFLUENCE ON THE CONTENT OF SECONDARY METABOLITES. Since secondary metabolites represent a chemical interface between plants and surrounding environment, their syntheses are frequently affected by environmental conditions. Thus, variations in the total content and/or of the relative proportions of secondary metabolites in plants can take place. We review the main environmental factors that can streamline or alter the production or concentration of secondary metabolites in plants. How seasonality, circadian rhythm, developmental stage and age, temperature, water availability, UV radiation, soil nutrients, altitude, atmospheric composition and tissue damage influence secondary metabolism are discussed.Keywords: variations in secondary metabolites; medicinal plants; chemical ecology. INTRODUÇÃODesde o quarto século a.C. existem relatos de normas para a coleta de plantas medicinais. Os carrascos gregos, por ex., coletavam suas amostras do veneno cicuta (Conium maculatum) pela manhã, quando os níveis de coniina são maiores 1,2 . Variações temporais e espaciais no conteúdo total, bem como as proporções relativas de metabólitos secundários em plantas ocorrem em diferentes níveis (sazonais e diárias; intraplanta, inter-e intraespecífica) e, apesar da existência de um controle genético, a expressão pode sofrer modificações resultantes da interação de processos bioquímicos, fisiológicos, ecológicos e evolutivos 3-7 . De fato, os metabólitos secundários representam uma interface química entre as plantas e o ambiente circundante, portanto, sua síntese é freqüentemente afetada por condições ambientais 8 .Os principais fatores que podem coordenar ou alterar a taxa de produção de metabólitos secundários estão expostos a seguir. Deve ser enfatizado, porém, que os estudos sobre influência destes fatores na produção de metabólitos secundários geralmente têm se limitado a um grupo restrito de espécies, predominantemente ocorrentes em regiões temperadas, muitas das quais são comercialmente importantes e podem ter sofrido fortes pressões seletivas antrópicas visando certas características desejadas. Seu comportamento, portanto, nem sempre é representativo de plantas selvagens ou de outros tipos de habitat.Também deve ser ressaltado que, muitas vezes, as variações podem ser decorrentes do desenvolvimento foliar e/ou surgimento de novos órgãos concomitante a uma constância no conteúdo total de metabólitos secundários. Isto pode levar à menor concentração destes metabólitos por diluição, podendo, no entanto, resultar em maior quantidade total, devido ao aumento de biomassa 9,10 . Além disso, alguns dos fatores discutidos apresentam correlações entre si e não atuam isoladamente, podendo influir em conjunto no metabolismo secundário, como por ex.: desenvolvimento e sazonalidade; índice pluviométrico e sazonalidade; temperatura e altitude, entre outros. FATORES QUE INFLUENCIAM O CONTEÚDO DE M...

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The Influence of Biotic and Abiotic Factors on the Production of Secondary Metabolites in Medicinal Plants

Gouvea

Gobbo‐Neto

Lopes

2012

Plant Bioactives and Drug Discovery

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Biochemical response of Norway spruce (Picea abies (L.) Karst.) towards 14-month exposure to ozone and acid mist: Part I—Effects on polyphenol and monoterpene metabolism

Cited by 48 publications

References 14 publications

Catechin, proanthocyanidin and lignin contents of loblolly pine (Pinus taeda) needles after chronic exposure to ozone

Catechin, proanthocyanidin and lignin contents of loblolly pine (Pinus taeda) needles after chronic exposure to ozone

Plantas medicinais: fatores de influência no conteúdo de metabólitos secundários

The Influence of Biotic and Abiotic Factors on the Production of Secondary Metabolites in Medicinal Plants

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