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The suppression of salinity-associated oxygen radicals production, in pepper (Capsicum annuum) fruit, by manganese, zinc and calcium in relation to its sensitivity to blossom-end rot
Year:
2005
Source of publication :
Physiologia Plantarum
Authors :
Aloni, Benyamin
;
.
Bar-Tal, Asher
;
.
Karni, Leah
;
.
Volume :
123
Co-Authors:
Aktas, H., University of Cukurova, Adana, Turkey
Karni, L., Department of Vegetable Crops, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Chang, D.-C., Agricultural Experimental Station, RDA, South Korea
Turhan, E., Canakkale Onsekiz Mart University, Turkey
Bar-Tal, A., Dept. of Water and Environ. Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Aloni, B., Department of Vegetable Crops, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
67
To page:
74
(
Total pages:
8
)
Abstract:
We investigated the possibility that oxidative stress contributes to blossom-end rot (BER) initiation in bell pepper (Capsicum annuum L.) grown under high salinity. Pepper plants (cv. Mazurka, Rijk Zwaan, the Netherlands) were grown in a greenhouse and irrigated with nutrient solution made up with either desalinated water (control - rising from E.C. 1.9 to 2.4 dS m-1) or saline water (salinity - rising from E.C. 3.2 to 7.0 dS m-1). Irrigation was by a circulation system. BER symptoms were observed throughout the experiment but were highly enhanced in the salinity-grown plants during the spring and summer. The fruit calcium concentration was not affected by salinity, but manganese concentrations in both leaves and fruits were significantly reduced under these conditions. Under salinity there was an enhancement of apoplast reactive oxygen species (ROS) production, which was partly a result of increase in NAD(P)H oxidase activity in the pericarp of pepper fruit at the stage that it was most sensitive to BER. Apoplast ROS production and extracted NAD(P)H oxidase activity were inhibited by manganese, zinc and to a lesser extent by calcium. These cations also negated the enhancement of ROS production caused by incubation of fruit pericarp discs in NaCl solutions. Manganese, zinc and calcium also inhibited NAD(P)H oxidase activity, extracted following their infiltration into fruit pericarp discs. The results suggest that generation and scavenging of oxygen free radicals in the apoplast may contribute to the appearance of BER symptoms in pepper fruits under saline conditions. It is suggested that manganese may serve as antioxidant in pepper fruit and that manganese addition to peppers grown under salinity may alleviate BER symptoms in the fruits.
Note:
Related Files :
Capsicum annuum
free radicals
Fruit pericarp discs
greenhouse effect
Oxygen radicals production
saline water
Zinc
Ziziphus mauritiana
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More details
DOI :
10.1111/j.1399-3054.2004.00435.x
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29359
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:46
You may also be interested in
Scientific Publication
The suppression of salinity-associated oxygen radicals production, in pepper (Capsicum annuum) fruit, by manganese, zinc and calcium in relation to its sensitivity to blossom-end rot
123
Aktas, H., University of Cukurova, Adana, Turkey
Karni, L., Department of Vegetable Crops, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Chang, D.-C., Agricultural Experimental Station, RDA, South Korea
Turhan, E., Canakkale Onsekiz Mart University, Turkey
Bar-Tal, A., Dept. of Water and Environ. Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Aloni, B., Department of Vegetable Crops, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
The suppression of salinity-associated oxygen radicals production, in pepper (Capsicum annuum) fruit, by manganese, zinc and calcium in relation to its sensitivity to blossom-end rot
We investigated the possibility that oxidative stress contributes to blossom-end rot (BER) initiation in bell pepper (Capsicum annuum L.) grown under high salinity. Pepper plants (cv. Mazurka, Rijk Zwaan, the Netherlands) were grown in a greenhouse and irrigated with nutrient solution made up with either desalinated water (control - rising from E.C. 1.9 to 2.4 dS m-1) or saline water (salinity - rising from E.C. 3.2 to 7.0 dS m-1). Irrigation was by a circulation system. BER symptoms were observed throughout the experiment but were highly enhanced in the salinity-grown plants during the spring and summer. The fruit calcium concentration was not affected by salinity, but manganese concentrations in both leaves and fruits were significantly reduced under these conditions. Under salinity there was an enhancement of apoplast reactive oxygen species (ROS) production, which was partly a result of increase in NAD(P)H oxidase activity in the pericarp of pepper fruit at the stage that it was most sensitive to BER. Apoplast ROS production and extracted NAD(P)H oxidase activity were inhibited by manganese, zinc and to a lesser extent by calcium. These cations also negated the enhancement of ROS production caused by incubation of fruit pericarp discs in NaCl solutions. Manganese, zinc and calcium also inhibited NAD(P)H oxidase activity, extracted following their infiltration into fruit pericarp discs. The results suggest that generation and scavenging of oxygen free radicals in the apoplast may contribute to the appearance of BER symptoms in pepper fruits under saline conditions. It is suggested that manganese may serve as antioxidant in pepper fruit and that manganese addition to peppers grown under salinity may alleviate BER symptoms in the fruits.
Scientific Publication
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