Physiological ecology responses of Scutellaria baicalensis to drought and rewatering.
- Author:
Yong-Gang ZHANG
1
;
Mei HAN
2
;
Xue JIANG
2
;
Sheng-Nan ZHAO
2
;
Li-Min YANG
2
Author Information
1. College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China. zhyg4579@tom.com
2. College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
- Publication Type:Journal Article
- MeSH:
Agricultural Irrigation;
Chlorophyll;
metabolism;
Droughts;
Drugs, Chinese Herbal;
analysis;
metabolism;
Photosynthesis;
Plant Proteins;
metabolism;
Scutellaria baicalensis;
chemistry;
enzymology;
metabolism;
Water;
metabolism
- From:
China Journal of Chinese Materia Medica
2013;38(22):3845-3850
- CountryChina
- Language:Chinese
-
Abstract:
To study the physiological ecology responses of Scutellaria baicalensis to drought and rewatering of short period, we tested and analyzed photosynthesis and chlorophyll fluorescence parameters of S. baicalensis leaves processed by different ways of water treatment in drought and rewatering period, characteristic indexes of physiology and biochemistry of root SOD, POD, PAL, C4H, etc. and accumulation dynamic change of root baicalin and baicalein. The result showed that along with the worsening drought, P(n), T(r), G(s) and F(v)/F(m) of S. baicalensis declined in different water supply, and F(o) increased. The response of SOD and POD's activity in S. baicalensis root to drought in I and II was earlier than it in III. The response time and increase range of baicalin accumulation existed differences in different water supply, and the indexes regained after rewatering. Therefore, photosynthesis of S. baicalensis changed and it destroyed the antioxidant metabolism balance when soil water content decreased resulting from drought. The synergistic effect of defence mechanism launched by S. baicalensis, SOD, POD, PAL, C4H, baicalin and baicalein reduced active oxygen's damage to the cell.
