Optimization of beta-carotene production by an indigenous isolate of Dunaliella salina under salinity-gradient stress
IRANIAN JOURNAL OF FISHERIES SCIENCES(2022)
摘要
Dunaliella salina has significant industrial aspects, especially for the accumulation of high amounts of 13-carotene, which is the main natural source in aquatic food webs. The first step of commercial production is accurate identification owing to phenotypic plasticity in the genus Dunaliella and lack of rigid cell wall. In this study, D. salina was isolated from Sirjan Kafe Namak of Iran when algal bloom had occurred and then identified based on morphological and molecular properties. Morphological characteristics bore a close resemblance to the species D. salina, including cell size, cupshaped chloroplast, large basal pyrenoid, and stigma position. Moreover, phylogenetic analysis of internal transcribed spacer (ITS) region (similar to 700 bp) corroborated morphological features by confirming the isolate at the species level. Under five different salinity concentrations, this strain could accumulate 13-carotene in the range of 0.51-2.78 mu g/mL with optimum growth at 2 M NaCl comparable with reported data for D. salina.
更多查看译文
关键词
Dunaliella, Internal transcribed spacer, Salinity tolerance, Sirjan, Iran
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要