Antioxidant Enzyme Activity Affected by High Boron Concentration in Sunflower and Tomato Seedlings

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dc.authoridKeles, Yuksel/0000-0001-8651-8385
dc.contributor.authorKeles, Yuksel
dc.contributor.authorErgun, Nuray
dc.contributor.authorOncel, Isil
dc.date.accessioned2024-09-18T20:04:41Z
dc.date.available2024-09-18T20:04:41Z
dc.date.issued2011
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractAgricultural productivity could be limited by toxic levels of boron (B) in soils. However, tolerance to B toxicity varies between plant species. This study investigated the effect of high B concentrations on the growth and antioxidant enzyme activity of relatively B-tolerant sunflower (Helianthus annuus L.) and B-sensitive tomato (Lycopersicon esculentum Miller) seedlings. The seedlings were grown in plastic pots supplemented with 0, 20, 40, and 60 g B g-1 [from boric acid, B(OH)3] for 3 weeks. Root and shoot length together with the dry weight of the harvested plants were measured. Boron analyses were carried out on the soil samples and on root, stem, and leaf samples. The B concentrations were determined to fall in the range of 112-475 g B g-1 leaf tissue in B-sensitive tomatoes and the range of 203-995 g B g-1 in B-tolerant sunflowers. Root length was unchanged in the sunflower but decreased by 38% in the tomato seedlings relative to the control. Shoot length was decreased by 28% in sunflower and by 43% in tomato seedlings at treatment 60 g B g-1 relative to controls. In the tomato leaves, glutathione reductase (GR) and superoxide dismutase (SOD) activity increased but catalase (CAT) activity decreased with greater B concentrations. In sunflower leaves, activities of three enzymes increased but CAT and GR activity began to decrease at applications greater than 40 g B g-1. These results indicate that high B concentrations in leaves have some significant effect on the antioxidant enzyme activity of plants. However, the power of antioxidant defence is not sufficient to remove B toxicity symptoms such as growth decrease.en_US
dc.identifier.doi10.1080/00103624.2011.535068
dc.identifier.endpage183en_US
dc.identifier.issn0010-3624
dc.identifier.issn1532-2416
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-79551567020en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage173en_US
dc.identifier.urihttps://doi.org/10.1080/00103624.2011.535068
dc.identifier.urihttps://hdl.handle.net/20.500.12483/8313
dc.identifier.volume42en_US
dc.identifier.wosWOS:000286889900006en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.ispartofCommunications in Soil Science and Plant Analysisen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBoronen_US
dc.subjectcatalaseen_US
dc.subjectglutathione reductaseen_US
dc.subjectprolineen_US
dc.subjectsuperoxide dismutaseen_US
dc.titleAntioxidant Enzyme Activity Affected by High Boron Concentration in Sunflower and Tomato Seedlingsen_US
dc.typeArticleen_US

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