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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.

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Salinity and temperature effects on Car contents 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 incubator with regulated temperature and light intensity. Treatments with distinct asterisk indicate significant differences according to the two-way ANOVA (GraphPad Prism 5 Demo); *P < 0.05 and **P < 0.01.
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fig5: Salinity and temperature effects on Car contents 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 incubator with regulated temperature and light intensity. 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 5 and results of statistical analysis, each salinity group compared to initial content, except for 15°C and 40–50, was of significant difference (P < 0.05) or of extremely significant difference (P < 0.01). The other groups indicated no significant difference (P > 0.05); 15°C compared to 20°C, salinity 25–35 and 50 showed no significant difference (P > 0.05), salinity 40–45 indicated extremely significant difference (P < 0.01); 15°C compared to 25°C, except for 25 showed no significant difference (P > 0.05). The other salinity conditions showed significant difference (P < 0.05) or extremely significant difference (P < 0.01); the comparisons between 20°C, 25°C, and 30°C showed no significant difference (P > 0.05). In different salinity conditions, the Car contents of Hypnea decreased relative to the initial content in 15°C, while Car contents increased in 25–30°C. The Car contents of Hypnea increased in 20°C only in 25–30. In suitable conditions, such as 25°C and 35, the Car contents attained 0.1178 mg/g FW, which increased by 3.83% relative to the initial content, increased by 3.30% compared with adjacent temperatures (such as 30°C and 35), and increased by 1.71% compared with adjacent salinity (such as 25°C and 40). In unsuitable conditions, such as 15°C and 45, the Car contents were reduced to −0.2068 mg/g FW, which decreased by 28.63% relative to the initial content, decreased by 26.69% compared with adjacent temperatures (such as 20°C and 40), and decreased by 15.5% compared with adjacent salinity (such as 15°C and 40).


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 Car contents 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 incubator with regulated temperature and light intensity. 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

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

fig5: Salinity and temperature effects on Car contents 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 incubator with regulated temperature and light intensity. 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 5 and results of statistical analysis, each salinity group compared to initial content, except for 15°C and 40–50, was of significant difference (P < 0.05) or of extremely significant difference (P < 0.01). The other groups indicated no significant difference (P > 0.05); 15°C compared to 20°C, salinity 25–35 and 50 showed no significant difference (P > 0.05), salinity 40–45 indicated extremely significant difference (P < 0.01); 15°C compared to 25°C, except for 25 showed no significant difference (P > 0.05). The other salinity conditions showed significant difference (P < 0.05) or extremely significant difference (P < 0.01); the comparisons between 20°C, 25°C, and 30°C showed no significant difference (P > 0.05). In different salinity conditions, the Car contents of Hypnea decreased relative to the initial content in 15°C, while Car contents increased in 25–30°C. The Car contents of Hypnea increased in 20°C only in 25–30. In suitable conditions, such as 25°C and 35, the Car contents attained 0.1178 mg/g FW, which increased by 3.83% relative to the initial content, increased by 3.30% compared with adjacent temperatures (such as 30°C and 35), and increased by 1.71% compared with adjacent salinity (such as 25°C and 40). In unsuitable conditions, such as 15°C and 45, the Car contents were reduced to −0.2068 mg/g FW, which decreased by 28.63% relative to the initial content, decreased by 26.69% compared with adjacent temperatures (such as 20°C and 40), and decreased by 15.5% compared with adjacent salinity (such as 15°C and 40).

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