| Effects of NaCl stress on growth of root hairs and physiologicalmetabolism of sisal seeding |
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| DOI：10.7606/j.issn.1000-7601.2012.05.20 |
| Key Words: Sisal NaCl stress root hair physiological metabolism |
| Author Name | Affiliation | | LU Xueqin | Life Science and Engineering College, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China | | HU Shanglian | Life Science and Engineering College, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China | | CAO Ying | Life Science and Engineering College, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China | | TANG Yongchang | Life Science and Engineering College, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China | | REN Peng | Life Science and Engineering College, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China |
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| Abstract: |
| Sisal seedling was used as experimental material and treated by different concentration of NaCl to simulate the salt stress conditions. Effects of NaCl stress on growth of root hairs and the amount changes of t
he penetration of plasmalemma, the MDA, the free proline and the soluble protein, as well as alterations of the POD activity and isozyme zymogram were studied. The results showed that 0.4% NaCl slightly inhibited the growth of root hairs of sisal, and with increase of treated time and stress intension, the growth of root hairs of sisal was strongly suppressed. At the same time, the results also showed that NaCl stress resulted in significantly increase of proline content and higher POD activity, as well as the change of POD isozyme zymogram. Therefore, i
t is inferred that salt-tolerance of sisal seeding might be resulted from much more proline accumulation and higher POD activity under NaCl stress. |
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