Life-cycle chronic gamma exposure of Arabidopsis Thaliana induces growth effects but no discernable effects on oxidative stress pathways

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@article{4f4bf6b663264b8fb0059c2eaf1a1be0,
title = "Life-cycle chronic gamma exposure of Arabidopsis Thaliana induces growth effects but no discernable effects on oxidative stress pathways",
abstract = "Arabidopsis thaliana was exposed to low-dose chronic gamma irradiation during a full life cycle and several biological responses were investigated. Following 24 days (inflorescence emergence), 34 days (w50% of flowers open) and 54 days (silice ripening) exposure, plants were harvested and monitored for biometric parameters, capacities of enzymes involved in the antioxidative defence mechanisms (SOD, APOD, GLUR, GPOD, SPOD, CAT, ME), glutathione and ascorbate pool, lipid peroxidation products, altered gene expression of selected genes encoding for antioxidative enzymes or reactive oxygen species production, and DNA integrity. Root fresh weight was significantly reduced after gamma exposure compared to the control at all stages monitored but no significant differences in root weight for the different dose rates applied was observed. Leaf and stem fresh weight were significantly reduced at the highest irradiation level after 54 days exposure only. Also total plant fresh was significantly lower at silice riping and this for the highest and medium dose rate applied. Germination of seeds from the gamma irradiated plants was not hampered. For several of the antioxidative defence enzymes studied, the enzyme capacity was generally stimulated towards flowering but generally no significant effect of dose rate on enzyme capacity was observed.",
keywords = "Life-cycle, chronic, gamma exposure, Arabidopsis Thaliana, growth effects, discernable effects, oxidative stress pathways",
author = "Hildegarde Vandenhove and Nathalie Vanhoudt and Ann Cuypers and {Van Hees}, May and Jean Wannijn and Nele Horemans and Hans Vanmarcke",
note = "Score = 10",
year = "2010",
month = sep,
day = "1",
doi = "10.1016/j.plaphy.2010.06.006",
language = "English",
volume = "48",
pages = "778--786",
journal = "Plant Physiology and Biochemistry",
issn = "0981-9428",
publisher = "Elsevier",
number = "9",

}

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TY - JOUR

T1 - Life-cycle chronic gamma exposure of Arabidopsis Thaliana induces growth effects but no discernable effects on oxidative stress pathways

AU - Vandenhove, Hildegarde

AU - Vanhoudt, Nathalie

AU - Cuypers, Ann

AU - Van Hees, May

AU - Wannijn, Jean

AU - Horemans, Nele

A2 - Vanmarcke, Hans

N1 - Score = 10

PY - 2010/9/1

Y1 - 2010/9/1

N2 - Arabidopsis thaliana was exposed to low-dose chronic gamma irradiation during a full life cycle and several biological responses were investigated. Following 24 days (inflorescence emergence), 34 days (w50% of flowers open) and 54 days (silice ripening) exposure, plants were harvested and monitored for biometric parameters, capacities of enzymes involved in the antioxidative defence mechanisms (SOD, APOD, GLUR, GPOD, SPOD, CAT, ME), glutathione and ascorbate pool, lipid peroxidation products, altered gene expression of selected genes encoding for antioxidative enzymes or reactive oxygen species production, and DNA integrity. Root fresh weight was significantly reduced after gamma exposure compared to the control at all stages monitored but no significant differences in root weight for the different dose rates applied was observed. Leaf and stem fresh weight were significantly reduced at the highest irradiation level after 54 days exposure only. Also total plant fresh was significantly lower at silice riping and this for the highest and medium dose rate applied. Germination of seeds from the gamma irradiated plants was not hampered. For several of the antioxidative defence enzymes studied, the enzyme capacity was generally stimulated towards flowering but generally no significant effect of dose rate on enzyme capacity was observed.

AB - Arabidopsis thaliana was exposed to low-dose chronic gamma irradiation during a full life cycle and several biological responses were investigated. Following 24 days (inflorescence emergence), 34 days (w50% of flowers open) and 54 days (silice ripening) exposure, plants were harvested and monitored for biometric parameters, capacities of enzymes involved in the antioxidative defence mechanisms (SOD, APOD, GLUR, GPOD, SPOD, CAT, ME), glutathione and ascorbate pool, lipid peroxidation products, altered gene expression of selected genes encoding for antioxidative enzymes or reactive oxygen species production, and DNA integrity. Root fresh weight was significantly reduced after gamma exposure compared to the control at all stages monitored but no significant differences in root weight for the different dose rates applied was observed. Leaf and stem fresh weight were significantly reduced at the highest irradiation level after 54 days exposure only. Also total plant fresh was significantly lower at silice riping and this for the highest and medium dose rate applied. Germination of seeds from the gamma irradiated plants was not hampered. For several of the antioxidative defence enzymes studied, the enzyme capacity was generally stimulated towards flowering but generally no significant effect of dose rate on enzyme capacity was observed.

KW - Life-cycle

KW - chronic

KW - gamma exposure

KW - Arabidopsis Thaliana

KW - growth effects

KW - discernable effects

KW - oxidative stress pathways

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_107291

UR - http://knowledgecentre.sckcen.be/so2/bibref/7152

U2 - 10.1016/j.plaphy.2010.06.006

DO - 10.1016/j.plaphy.2010.06.006

M3 - Article

VL - 48

SP - 778

EP - 786

JO - Plant Physiology and Biochemistry

JF - Plant Physiology and Biochemistry

SN - 0981-9428

IS - 9

ER -

ID: 296710