Radish plant behaviour under short-term elevated ozone fumigation
Abstract: Effects of short-term ozone (O3) fumigation on radish (Raphanus sativus L.) plants were examined in growth chambers under controlled environment conditions. Plants were exposed to 0 μg/m3 (reference), 80 μg/m3, 160 μg/m3 and 240 μg/m3 O3 concentrations for 7 h per day for five days. Day/night temperature was 21°C/14°C and photoperiod 16 h. Chlorophyll content was evaluated spectrophotometrically. Chromatographic analysis of saccharides was also undertaken. The results showed that elevated O3 inhibited the growth of radish rhizocarps, net assimilation rate and biomass accumulation. O3 induced leaf desiccation, necrosis and premature senescence, but a typical reaction of plants to O3 stress was the rapid regeneration of new leaves. O3 inhibited accumulation of carotenoids more than chlorophylls. The higher photosynthetic pigment content in newly generated radish leaves may be regarded as an adaptation of the photosynthetic system to O3. Leaf saccharide metabolism and incorporation depended on O3 concentration. Rapid regeneration of new leaves and increased content of photosynthetic pigments is the typical reaction of radish plants to O3 stress.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Radish plant behaviour under short-term elevated ozone fumigation ; volume:5 ; number:5 ; year:2010 ; pages:674-681 ; extent:8
Open life sciences ; 5, Heft 5 (2010), 674-681 (gesamt 8)
- Urheber
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Sakalauskaitė, Jurga
Brazaitytė, Aušra
Urbonavičiūtė, Akvilė
Samuolienė, Giedrė
Šabajevienė, Gintarė
Sakalauskienė, Sandra
Duchovskis, Pavelas
- DOI
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10.2478/s11535-010-0057-6
- URN
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urn:nbn:de:101:1-2409201838455.882575357831
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:34 MESZ
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Beteiligte
- Sakalauskaitė, Jurga
- Brazaitytė, Aušra
- Urbonavičiūtė, Akvilė
- Samuolienė, Giedrė
- Šabajevienė, Gintarė
- Sakalauskienė, Sandra
- Duchovskis, Pavelas
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