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Effects of salinity on the growth, physiology and relevant gene expression of an annual halophyte grown from heteromorphic seeds.

Cao J, Lv XY, Chen L, Xing JJ, Lan HY - AoB Plants (2015)

Bottom Line: Results showed that osmolytes (proline and glycinebetaine) were significantly increased and that excess reactive oxygen species ([Formula: see text] H2O2) produced under high salinity were scavenged by increased levels of antioxidant enzymes (superoxide dismutase, ascorbate peroxidase and glutathione reductase) and corresponding antioxidants (ascorbic acid and glutathione).Moreover, enhancement of phosphoenolpyruvate carboxylase activity at high salt intensity had a positive effect on photosynthesis.In conclusion, we found that high salinity induced the same active physiological responses in plants from heteromorphic seeds of S. aralocaspica, there was no carry-over of seed heteromorphism to plants: all the descendants required salinity for optimal growth and adaptation to their natural habitat.

View Article: PubMed Central - PubMed

Affiliation: Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China.

No MeSH data available.


Changes of the activity of antioxidant enzyme in leaves during long-term NaCl treatment. (A) SOD, (B) POD, (C) CAT, (D) APX and (E) GR. F-values are given when significance levels are reached (S, salt; *P< 0.05, ***P< 0.001). Bars with different uppercase letters indicate significant differences (P< 0.05) according to Tukey's test. Values are means ± SE of four replicates. Bl, black seed; Br, brown seed.
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PLV112F6: Changes of the activity of antioxidant enzyme in leaves during long-term NaCl treatment. (A) SOD, (B) POD, (C) CAT, (D) APX and (E) GR. F-values are given when significance levels are reached (S, salt; *P< 0.05, ***P< 0.001). Bars with different uppercase letters indicate significant differences (P< 0.05) according to Tukey's test. Values are means ± SE of four replicates. Bl, black seed; Br, brown seed.

Mentions: The activities of SOD (F3,24 = 53.56, P< 0.0001), APX (F3,24 = 63.49, P< 0.0001) and GR (F3,24 = 39.79, P< 0.0001) increased significantly in response to NaCl treatment, especially at higher salt concentrations (300 and 500 mM NaCl) (Fig. 6A, D and E), while significant decreases were measured for POD (F3,24 = 77.61, P< 0.0001) and CAT (F3,24 = 74.45, P< 0.0001) activities, particularly under 300 or 500 mM NaCl treatment (Fig. 6B and C). For all indexes of enzyme activity, no significant difference was detected between plants derived from two seed types under different NaCl concentrations (F1,24 = 4.143, P = 0.053 for SOD; F1,24 = 3.119, P = 0.0901 for APX; F1,24 = 0.1041, P = 0.7497 for GR; F1,24 = 1.408, P = 0.2471 for CAT), except for POD (F1,24 = 4.285, P = 0.0494).Figure 6.


Effects of salinity on the growth, physiology and relevant gene expression of an annual halophyte grown from heteromorphic seeds.

Cao J, Lv XY, Chen L, Xing JJ, Lan HY - AoB Plants (2015)

Changes of the activity of antioxidant enzyme in leaves during long-term NaCl treatment. (A) SOD, (B) POD, (C) CAT, (D) APX and (E) GR. F-values are given when significance levels are reached (S, salt; *P< 0.05, ***P< 0.001). Bars with different uppercase letters indicate significant differences (P< 0.05) according to Tukey's test. Values are means ± SE of four replicates. Bl, black seed; Br, brown seed.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4612296&req=5

PLV112F6: Changes of the activity of antioxidant enzyme in leaves during long-term NaCl treatment. (A) SOD, (B) POD, (C) CAT, (D) APX and (E) GR. F-values are given when significance levels are reached (S, salt; *P< 0.05, ***P< 0.001). Bars with different uppercase letters indicate significant differences (P< 0.05) according to Tukey's test. Values are means ± SE of four replicates. Bl, black seed; Br, brown seed.
Mentions: The activities of SOD (F3,24 = 53.56, P< 0.0001), APX (F3,24 = 63.49, P< 0.0001) and GR (F3,24 = 39.79, P< 0.0001) increased significantly in response to NaCl treatment, especially at higher salt concentrations (300 and 500 mM NaCl) (Fig. 6A, D and E), while significant decreases were measured for POD (F3,24 = 77.61, P< 0.0001) and CAT (F3,24 = 74.45, P< 0.0001) activities, particularly under 300 or 500 mM NaCl treatment (Fig. 6B and C). For all indexes of enzyme activity, no significant difference was detected between plants derived from two seed types under different NaCl concentrations (F1,24 = 4.143, P = 0.053 for SOD; F1,24 = 3.119, P = 0.0901 for APX; F1,24 = 0.1041, P = 0.7497 for GR; F1,24 = 1.408, P = 0.2471 for CAT), except for POD (F1,24 = 4.285, P = 0.0494).Figure 6.

Bottom Line: Results showed that osmolytes (proline and glycinebetaine) were significantly increased and that excess reactive oxygen species ([Formula: see text] H2O2) produced under high salinity were scavenged by increased levels of antioxidant enzymes (superoxide dismutase, ascorbate peroxidase and glutathione reductase) and corresponding antioxidants (ascorbic acid and glutathione).Moreover, enhancement of phosphoenolpyruvate carboxylase activity at high salt intensity had a positive effect on photosynthesis.In conclusion, we found that high salinity induced the same active physiological responses in plants from heteromorphic seeds of S. aralocaspica, there was no carry-over of seed heteromorphism to plants: all the descendants required salinity for optimal growth and adaptation to their natural habitat.

View Article: PubMed Central - PubMed

Affiliation: Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China.

No MeSH data available.