Antioxidant capacity is correlated with susceptibility to leaf spot caused by a rapid temperature drop in Saintpaulia (African violet)

Yang, Soo Jung; Hosokawa, Munetaka; Mizuta, Youichi; Yun, Jae Gill; Mano, Junichi; Yazawa, Susumu

doi:10.1016/s0304-4238(00)00235-1

Cited by 16 publications

(11 citation statements)

References 16 publications

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“…In both organs, stimulation of some detoxifying enzymes during the first 4 days of chilling might result from an induction of these enzymes through the production of O 2 À and H 2 O 2 (Prasad et al, 1994). Different studies demonstrated that chilling tolerance in various species was partly the result of an enhanced antioxidant defence system (Jahnke et al, 1991;Walker and McKersie, 1993;Hodges et al, 1996;Prasad, 1996, Yang et al, 2001. The evidence indicates that CI of cucumber leaves was caused mainly by increased lipid peroxidation measured by the increase in MDA formation in chilled leaves (Shen et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

“…These observations indicate distinct deterioration of membrane integrity and activation of lipid peroxidation in roots. The combined action of SOD and CAT is supposed to efficiently eliminate O 2 À and H 2 O 2 , and consequently, protects cellular components against the more reactive hydroxyl radical (Yang et al, 2001). In soybean seedlings, the relationship between lipid peroxidation in different organs (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Antioxidant enzymes and isoflavonoids in chilled soybean (Glycine max (L.) Merr.) seedlings

Posmyk

Bailly

Szafrańska

et al. 2005

Journal of Plant Physiology

145

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Antioxidant enzymes and isoflavonoids in chilled soybean (Glycine max (L.) Merr.) seedlings

Posmyk

Bailly

Szafrańska

et al. 2005

Journal of Plant Physiology

145

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“…SOD, APX, GR, catalase (CAT) and POD] and free radical scavengers protect plant cell against oxidative damage (Lukatkin 2002). It has been reported that increasing levels of antioxidant scavenging systems have considerable roles in achieving tolerance to chilling stress in various plants (Yang et al 2001;Posmyk et al 2005;Morsy et al 2007). However, when photoprotective and antioxidant mechanisms are overwhelmed, increased production of ROS damage macromolecules through hydrophobic interactions caused by oxidative stress (Foyer et al 1994;Tambussi et al 2004).…”

mentioning

confidence: 99%

Activities of photosystem II and antioxidant enzymes in chickpea (Cicer arietinum L.) cultivars exposed to chilling temperatures

Turan

Ekmekçi

2010

Acta Physiol Plant

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This study was carried out to determine the effect of chilling on both cold-acclimated and non-acclimated chickpea (Cicer arietinum L.) cultivars (Gökçe and Canıtez 87). Chickpea seedlings grown in soil culture for 12 days were subjected to chilling temperatures (2 and 4°C for 12 days) after maintaining in cold-acclimation (10°C, 7 days) or non-acclimation (25°C, 7 days) periods. The lowest values of growth parameters were obtained with cold-acclimated plants, whereas non-acclimated plants exhibited the lowest water content values, especially at 2°C. There was no effect of cold-acclimation period on chlorophyll fluorescence parameters. Plants subjected to chilling temperatures after cold-acclimation were more tolerant with respect to chlorophyll fluorescence parameters, and Gökçe had better photosystem II (PSII) photochemical activity. In the chilling treatments, total chlorophyll (a ? b) content reduced, especially at 2°C, while anthocyanin and flavonoid contents increased to a greater extent in Gökçe and carotenoid content of the cultivars did not change. Malondialdehyde (MDA) content was higher for Canıtez 87, mostly at 2°C, while proline accumulation was greater for Gökçe. The cold-acclimation period led to a remarkable increase in antioxidant enzyme activities of both cultivars. The superoxide dismutase (SOD) activity was much higher in Gökçe for both chilling temperatures and the ascorbate peroxidase (APX) activity increased only in the cold-acclimated 4°C treatments. Similarly, with APX activity, the glutathione reductase Communicated by Z. Gombos.

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“…These traits can be stably propagated through vegetative means, including leaf culture (Teixeira da Silva et al 2016a). African violet plants are very sensitive to alteration in light intensity, temperature, and humidity, and minor changes can lead to the development of leaf spot disease (Yun et al 1997, Yang et al 2001, Chen and Henny 2009. Plants resistant to biotic and abiotic stresses will need to be developed using transgenic strategies, and this requires robust and reproducible genetic engineering and tissue culture protocols to regenerate transformants.…”

Section: Discussionmentioning

confidence: 99%

African violet (Saintpaulia ionantha H. Wendl.): classical breeding and progress in the application of biotechnological techniques

Silva¹,

Dewir

Wicaksono

et al. 2017

Folia Horticulturae

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As a result of its domestication, breeding and subsequent commercialization, African violet (Saintpaulia ionantha H. Wendl.) has become the most famous and popular Saintpaulia species. There is interest in producing cultivars that have increased resistance to pests and low temperature, in the introduction of novel horticultural characteristics such as leaf shape, flower colour, size and form, and in improved productivity and enhanced flower duration in planta. In African violet, techniques such as the application of chemical mutagens (ethylmethanesulfonate, N-nitroso-N-methylurea), radiation (gamma (γ)-rays, X-rays, carbon ion beams) and colchicine have been successfully applied to induce mutants. Among these techniques, γ radiation and colchicine have been the most commonly applied mutagens. This review offers a short synthesis of the advances made in African violet breeding, including studies on mutation and somaclonal variation caused by physical and chemical factors, as well as transgenic strategies using Agrobacterium-mediated transformation and particle bombardment. In African violet, Agrobacterium-mediated transformation is affected by the Agrobacterium strain, selection marker, and cutting-induced wounding stress. Somaclonal variation, which arises in tissue cultures, can be problematic in maintaining true-to-type clonal material, but may be a useful tool for obtaining variation in flower colour. The only transgenic African violet plants generated to date with horticulturally useful traits are tolerant to boron (heavy metal) stress, or bear a glucanase-chitinase gene.

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Antioxidant capacity is correlated with susceptibility to leaf spot caused by a rapid temperature drop in Saintpaulia (African violet)

Cited by 16 publications

References 16 publications

Antioxidant enzymes and isoflavonoids in chilled soybean (Glycine max (L.) Merr.) seedlings

Antioxidant enzymes and isoflavonoids in chilled soybean (Glycine max (L.) Merr.) seedlings

Activities of photosystem II and antioxidant enzymes in chickpea (Cicer arietinum L.) cultivars exposed to chilling temperatures

African violet (Saintpaulia ionantha H. Wendl.): classical breeding and progress in the application of biotechnological techniques

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