Abstract
In order to verify the role played by oxidation in the budding of potato tubers (Solanum tuberosum L. cv. Kennebec), the physiological events occurring below bud at 4°C have been studied for a period of 6 months. The low temperature storage induced an increase in the degree of unsaturation and a decrease in the ratio of saturated/unsaturated fatty acids of membrane polar lipids with a subsequent increase of lipid hydroperoxides (LOOH). Cold stress increased both enzymatic antioxidative activities (superoxide dismutase, SOD, E.C.1.15.1.1; catalase, CAT, E.C. 1.11.1.6), and α-tocopherol levels thus protecting membrane's polyunsaturated lipids. Between 0 and 15 days of storage SOD/CAT ratio, α-tocopherol, LOOH levels and the degree of lipid unsaturation showed strong variations. After 30 to 120/150 days the antioxidative system seemed to reach a homeostasis different from that of time 0, accompanied by a constant increase of indole-3-acetic acid (IAA) after 60 days. The antioxidative system, after 150 days, lost its efficiency while LOOH levels were maintained higher than time 0 and IAA concentration was sufficient to allow sprouting.
| Original language | English |
|---|---|
| Pages (from-to) | 833-841 |
| Number of pages | 9 |
| Journal | Free Radical Research |
| Volume | 35 |
| Issue number | 6 |
| Publication status | Published - 2001 |
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Keywords
- α-tocopherol
- Catalase
- Indole-3-acetic acid
- Lipid hydroperoxides
- Potato tuber
- Superoxide dismutase
ASJC Scopus subject areas
- Biochemistry
Cite this
Oxidative stress, growth factor production and budding in potato tubers during cold storage. / Reverberi, Massimo; Picardo, Mauro; Ricelli, Alessandra; Camera, Emanuela; Fanelli, Corrado; Fabbri, Anna Adele.
In: Free Radical Research, Vol. 35, No. 6, 2001, p. 833-841.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Oxidative stress, growth factor production and budding in potato tubers during cold storage
AU - Reverberi, Massimo
AU - Picardo, Mauro
AU - Ricelli, Alessandra
AU - Camera, Emanuela
AU - Fanelli, Corrado
AU - Fabbri, Anna Adele
PY - 2001
Y1 - 2001
N2 - In order to verify the role played by oxidation in the budding of potato tubers (Solanum tuberosum L. cv. Kennebec), the physiological events occurring below bud at 4°C have been studied for a period of 6 months. The low temperature storage induced an increase in the degree of unsaturation and a decrease in the ratio of saturated/unsaturated fatty acids of membrane polar lipids with a subsequent increase of lipid hydroperoxides (LOOH). Cold stress increased both enzymatic antioxidative activities (superoxide dismutase, SOD, E.C.1.15.1.1; catalase, CAT, E.C. 1.11.1.6), and α-tocopherol levels thus protecting membrane's polyunsaturated lipids. Between 0 and 15 days of storage SOD/CAT ratio, α-tocopherol, LOOH levels and the degree of lipid unsaturation showed strong variations. After 30 to 120/150 days the antioxidative system seemed to reach a homeostasis different from that of time 0, accompanied by a constant increase of indole-3-acetic acid (IAA) after 60 days. The antioxidative system, after 150 days, lost its efficiency while LOOH levels were maintained higher than time 0 and IAA concentration was sufficient to allow sprouting.
AB - In order to verify the role played by oxidation in the budding of potato tubers (Solanum tuberosum L. cv. Kennebec), the physiological events occurring below bud at 4°C have been studied for a period of 6 months. The low temperature storage induced an increase in the degree of unsaturation and a decrease in the ratio of saturated/unsaturated fatty acids of membrane polar lipids with a subsequent increase of lipid hydroperoxides (LOOH). Cold stress increased both enzymatic antioxidative activities (superoxide dismutase, SOD, E.C.1.15.1.1; catalase, CAT, E.C. 1.11.1.6), and α-tocopherol levels thus protecting membrane's polyunsaturated lipids. Between 0 and 15 days of storage SOD/CAT ratio, α-tocopherol, LOOH levels and the degree of lipid unsaturation showed strong variations. After 30 to 120/150 days the antioxidative system seemed to reach a homeostasis different from that of time 0, accompanied by a constant increase of indole-3-acetic acid (IAA) after 60 days. The antioxidative system, after 150 days, lost its efficiency while LOOH levels were maintained higher than time 0 and IAA concentration was sufficient to allow sprouting.
KW - α-tocopherol
KW - Catalase
KW - Indole-3-acetic acid
KW - Lipid hydroperoxides
KW - Potato tuber
KW - Superoxide dismutase
UR - http://www.scopus.com/inward/record.url?scp=0035695108&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035695108&partnerID=8YFLogxK
M3 - Article
VL - 35
SP - 833
EP - 841
JO - Free Radical Research
JF - Free Radical Research
SN - 1071-5762
IS - 6
ER -