Effect of the ethylene precursor, 1-aminocyclopropane-1-carboxylic acid on different growth stages of Haematococcus pluvialis. (November 2016)

• Record Type: Journal Article
• Authors: Vo, Thi-Thao; Lee, Changsu; Han, Sang-Il; Kim, Jee Young; Kim, Sok; Choi, Yoon-E
• Is Part Of: Bioresource technology. Volume 220(2016)
• Page Start: 85
• Page End: 93
• Publication Date: 2016-11
• Subjects: Haematococcus pluvialis -- Astaxanthin -- 1-Aminocyclopropane-1-carboxylic acid -- Two-step applications; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.08.046
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: The effects of ACC on different cell stages of H. pluvialis were investigated. Astaxanthin production could be increased whenever the cells were treated at the early red stage. Transcriptional levels of relevant genes supported enhanced astaxanthin biosynthesis. Synergistic effect of ACC and light intensity was also confirmed. Finally, two-step applications of ACC were proposed and verified. Abstract: In this study, we explored the effects of ACC on other stages of H. pluvialis . Interestingly, even though ACC displayed a dose-dependent effect on astaxanthin production, it is evident that astaxanthin production could be facilitated whenever the cells were treated at the early red stage. The transcriptional levels of BKT, CHY, SOD, and CAT genes supported enhanced astaxanthin biosynthesis upon ACC treatment at the early red stage. The combinatorial synergistic effect of ACC and light intensity was also confirmed. Finally, two-step application of ACC at the vegetative phase to increase biomass production and at the early-red stage to promote astaxanthin biosynthesis was proposed to maximize the efficiency of ACC treatment.