Over-expression of PaSOD in transgenic potato enhances photosynthetic performance under drought
IR@IHBT: CSIR-Institute of Himalayan Bioresource Technology, Palampur
View Archive Info| Field | Value | |
| Title |
Over-expression of PaSOD in transgenic potato enhances
photosynthetic performance under drought
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| Creator |
Pal, A.K.
Acharya, Karan Vats, S K Kumar, Sanjay Ahuja, Paramvir Singh |
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| Subject |
Plant sciences
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| Description |
Drought stress enhances the production of superoxide radical (O2
˙¯) and superoxide dismutase catalyses dismutation of
it to H2O2 and O2, and hence provides a first line of defense against oxidative stress. Over-expression of a cytosolic
copper-zinc superoxide dismutase, cloned from Potentilla atrosanguinea (PaSOD), in potato (Solanum tuberosum ssp.
tuberosum L. cv. Kufri Sutlej) resulted in enhanced net photosynthetic rates (PN) and stomatal conductance (gs)
compared to that in the wild type (WT) plants under control (irrigated) as well as drought stress conditions. Drought
stress declined leaf water potential, PN, gs, photosystem II activity and chlorophyll content, but increased proline and
O2
˙¯ contents, more in WT than transgenic potato plants (SS5). The significantly higher SOD activity in SS5 coincided
well with lower O2
˙¯ content, suggesting its role in maintaining higher gs and PN in transgenic potato plants.
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| Date |
2012
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://ihbt.csircentral.net/1343/1/133_Over%2Dexpression.pdf
Pal, A.K. and Acharya, Karan and Vats, S K and Kumar, Sanjay and Ahuja, Paramvir Singh (2012) Over-expression of PaSOD in transgenic potato enhances photosynthetic performance under drought. Journal of Biologia Plantarum. pp. 1-6. |
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| Relation |
http://ihbt.csircentral.net/1343/
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