Limits...
Effects of seawater salinity and temperature on growth and pigment contents in Hypnea cervicornis J. Agardh (Gigartinales, Rhodophyta).

Ding L, Ma Y, Huang B, Chen S - Biomed Res Int (2013)

Bottom Line: Agardh (Gigartinales, Rhodophyta) by setting up different ranges of salinity (25, 30, 35, 40, 45, and 50) and temperature (15, 20, 25, and 30°C).The growth rates first increase then decrease as the temperature increases, while growth tends to decline as salinity increases.The results of this study are advantageous to ensure propagation and economic development of this species in the southern sea area of China.

View Article: PubMed Central - PubMed

Affiliation: Shantou University, Shantou 515063, China.

ABSTRACT
This study simulated outdoor environmental living conditions and observed the growth rates and changes of several photosynthetic pigments (Chl a, Car, PE, and PC) in Hypnea cervicornis J. Agardh (Gigartinales, Rhodophyta) by setting up different ranges of salinity (25, 30, 35, 40, 45, and 50) and temperature (15, 20, 25, and 30°C). At conditions of culture, the results are as follows. (1) Changes in salinity and temperature have significant effects on the growth of H. cervicornis. The growth rates first increase then decrease as the temperature increases, while growth tends to decline as salinity increases. The optimum salinity and temperature conditions for growth are 25 and 25°C, respectively. (2) Salinity and temperature have significant or extremely significant effects on photosynthetic pigments (Chl a, Car, PE, and PC) in H. cervicornis. The results of this study are advantageous to ensure propagation and economic development of this species in the southern sea area of China.

Show MeSH

Related in: MedlinePlus

Salinity and temperature effects on photosynthetic activity of H. cervicornis cultured for 15 days in sterile seawater enriched with f1 mother liquid and compounded to different salinities, placed in different intelligent illumination incubators with regulated temperature and light intensity. The photosynthetic activities were measured once every five days, four times in all (containing initial value); finally the average value was obtained. Treatments with distinct asterisk indicate significant differences according to the two-way ANOVA (GraphPad Prism 5 Demo); *P < 0.05 and **P < 0.01.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3852812&req=5

fig3: Salinity and temperature effects on photosynthetic activity of H. cervicornis cultured for 15 days in sterile seawater enriched with f1 mother liquid and compounded to different salinities, placed in different intelligent illumination incubators with regulated temperature and light intensity. The photosynthetic activities were measured once every five days, four times in all (containing initial value); finally the average value was obtained. Treatments with distinct asterisk indicate significant differences according to the two-way ANOVA (GraphPad Prism 5 Demo); *P < 0.05 and **P < 0.01.

Mentions: According to Figure 3 and results of statistical analysis, the photosynthetic activity of Hypnea did not follow a certain pattern in different salinity. In general, the 25–40 concentration compared to the high salinity concentration of 45 and 50 were significantly different (P < 0.05) or showed extremely significant differences (P < 0.01). In Figure 3, the activity of Hypnea showed no significant difference (P > 0.05) in salinity 25–35, which indicated very low death rates compared to very high in high salinity of 45 and 50 indicating that this salinity condition is not suitable indeed for the growth of Hypnea. This demonstrates that the range of salinity between 25 and 40 is suitable for the growth of Hypnea, and in suitable salinity, such as 30, the minimum of the photosynthetic activity on Hypnea dropped to 0.568 Y after 15 days of culture, which decreased slowly (because light intensity was not suitable, the photosynthetic activity has been decreasing, and initial photosynthetic activity was 0.604 Y). In unsuitable salinity, such as 50, the minimum of the photosynthetic activity on Hypnea dropped to 0.182 Y, which indicated significant decline. Figure 3 reflects the observed photosynthetic activity of Hypnea.


Effects of seawater salinity and temperature on growth and pigment contents in Hypnea cervicornis J. Agardh (Gigartinales, Rhodophyta).

Ding L, Ma Y, Huang B, Chen S - Biomed Res Int (2013)

Salinity and temperature effects on photosynthetic activity of H. cervicornis cultured for 15 days in sterile seawater enriched with f1 mother liquid and compounded to different salinities, placed in different intelligent illumination incubators with regulated temperature and light intensity. The photosynthetic activities were measured once every five days, four times in all (containing initial value); finally the average value was obtained. Treatments with distinct asterisk indicate significant differences according to the two-way ANOVA (GraphPad Prism 5 Demo); *P < 0.05 and **P < 0.01.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3852812&req=5

fig3: Salinity and temperature effects on photosynthetic activity of H. cervicornis cultured for 15 days in sterile seawater enriched with f1 mother liquid and compounded to different salinities, placed in different intelligent illumination incubators with regulated temperature and light intensity. The photosynthetic activities were measured once every five days, four times in all (containing initial value); finally the average value was obtained. Treatments with distinct asterisk indicate significant differences according to the two-way ANOVA (GraphPad Prism 5 Demo); *P < 0.05 and **P < 0.01.
Mentions: According to Figure 3 and results of statistical analysis, the photosynthetic activity of Hypnea did not follow a certain pattern in different salinity. In general, the 25–40 concentration compared to the high salinity concentration of 45 and 50 were significantly different (P < 0.05) or showed extremely significant differences (P < 0.01). In Figure 3, the activity of Hypnea showed no significant difference (P > 0.05) in salinity 25–35, which indicated very low death rates compared to very high in high salinity of 45 and 50 indicating that this salinity condition is not suitable indeed for the growth of Hypnea. This demonstrates that the range of salinity between 25 and 40 is suitable for the growth of Hypnea, and in suitable salinity, such as 30, the minimum of the photosynthetic activity on Hypnea dropped to 0.568 Y after 15 days of culture, which decreased slowly (because light intensity was not suitable, the photosynthetic activity has been decreasing, and initial photosynthetic activity was 0.604 Y). In unsuitable salinity, such as 50, the minimum of the photosynthetic activity on Hypnea dropped to 0.182 Y, which indicated significant decline. Figure 3 reflects the observed photosynthetic activity of Hypnea.

Bottom Line: Agardh (Gigartinales, Rhodophyta) by setting up different ranges of salinity (25, 30, 35, 40, 45, and 50) and temperature (15, 20, 25, and 30°C).The growth rates first increase then decrease as the temperature increases, while growth tends to decline as salinity increases.The results of this study are advantageous to ensure propagation and economic development of this species in the southern sea area of China.

View Article: PubMed Central - PubMed

Affiliation: Shantou University, Shantou 515063, China.

ABSTRACT
This study simulated outdoor environmental living conditions and observed the growth rates and changes of several photosynthetic pigments (Chl a, Car, PE, and PC) in Hypnea cervicornis J. Agardh (Gigartinales, Rhodophyta) by setting up different ranges of salinity (25, 30, 35, 40, 45, and 50) and temperature (15, 20, 25, and 30°C). At conditions of culture, the results are as follows. (1) Changes in salinity and temperature have significant effects on the growth of H. cervicornis. The growth rates first increase then decrease as the temperature increases, while growth tends to decline as salinity increases. The optimum salinity and temperature conditions for growth are 25 and 25°C, respectively. (2) Salinity and temperature have significant or extremely significant effects on photosynthetic pigments (Chl a, Car, PE, and PC) in H. cervicornis. The results of this study are advantageous to ensure propagation and economic development of this species in the southern sea area of China.

Show MeSH
Related in: MedlinePlus