Details

Autor(en) / Beteiligte

• Sun, Yongdong
• Luo, Weirong
• Sun, Shiyong

Titel

Exogenous Hydrogen Sulphide Protection of Cucurbita ficifolia Seedlings against NaHCO^sub 3^ Stress

Ist Teil von

• Nature environment and pollution technology, 2014-06, Vol.13 (2), p.381

Ort / Verlag

Karad: Technoscience Publications

Erscheinungsjahr

2014

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• Salinity is one of the main environmental stresses that affect plant growth and development. H^sub 2^S plays an important role in a variety of responses against abiotic stresses. This study was conducted to determine the effects of exogenous NaHS, a hydrogen sulphide (H^sub 2^S) donor on physiological characteristics of Cucurbita ficifolia seedlings under NaHCO^sub 3^ stress. The accumulation of chlorophyll content, malondialdehyde (MDA), soluble protein and soluble sugar along with the activities of superoxide dismutase (SOD) and peroxidase (POD) in leaves were estimated. NaHCO^sub 3^ stress decreased the chlorophyll content, increased the accumulation of MDA, soluble protein and soluble sugar, and improved SOD and POD activities in leaves, compared to the control. However, exogenous NaHS treatment (1.0 mmol/L) significantly increased the chlorophyll content, soluble protein and soluble sugar contents, and decreased the MDA content, SOD and POD activities of NaHCO^sub 3^-stressed seedlings. It is strongly suggested that NaHCO^sub 3^ stress inhibits the growth of Cucurbita ficifolia seedlings, while exogenous H^sub 2^S can effectively protect Cucurbita ficifolia seedlings against NaHCO^sub 3^ stress.