| Responses of activity of antioxidant enzymes and accumulation of osmolyte in Peganum multisectum Bobr leaves to soil drought stress |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2005.05.25 |
| Key Words: Peganum multisectum Bobr drought stress antioxidant enzymes osmotic adjustment malondialdehyde(MDA) permeability of plasma membrane |
|
| Hits: 4 |
| Download times: 1 |
| Abstract: |
| ectum Bobr leaves were studied with pot culture experiment. The relation between the plant physiological indexes and drought tolerance were determined. The results showed that the biomass of peganum multisectum Bobr dropped under soil drought stress. With the aggravation of water stress and the prolong of stress period, the content of malondialdehyde(MDA) and permeability of plasma membrane in peganum multisectum Bobr leaves tended to be increased. The activity of superoxide dismutase(SOD) and catalase(CAT) with the aggravation of water stress were increased at begining and then dropped. The actvity of peroxidase(POD) under light and middle drought stress was increased first and then decreased, and it was decreased continuously under serious drought stress. The accumulation of osmotic adjustment soluted (soluble sugars, free amino acids and proline) was increased with the aggravation of water stress. The results indicated that antioxidant enzymes were related to drought tolerance and the osmotic adjustment materials were the inherent basis of superior drought tolerance of peganum multisectum Bobr. |