Quantum yield alterations due to the static magnetic fields action on Arthrospira platensis SAG 21.99: Evaluation of photosystem activity

被引：31
作者：
Deamici, Kricelle Mosquera [1 ]
Cuellar-Bermudez, Sara P. [2 ]
Muylaert, Koenraad [2 ]
Santos, Lucielen Oliveira [3 ]
Vieira Costa, Jorge Alberto [1 ]
机构：
[1] Fed Univ Rio Grande, Coll Chem & Food Engn, Biochem Engn Lab, BR-96203900 Rio Grande, RS, Brazil
[2] KU Leuven Kulak, Lab Aquat Biol, E Sabbelaan 53, Kortrijk, Belgium
[3] Fed Univ Rio Grande, Coll Chem & Food Engn, Biotechnol Lab, BR-96203900 Rio Grande, RS, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2019年 / 292卷
关键词：
Arthrospira; Chl-fluorescence; OJIP; Quantum yield; Cyanobacteria; CHLOROPHYLL FLUORESCENCE; CHLAMYDOMONAS-REINHARDTII; CARBOHYDRATE CONTENT; SPIRULINA-PLATENSIS; NITROGEN STARVATION; BATCH CULTIVATION; LIGHT-INTENSITY; HEAT-STRESS; CHLORELLA; PHOTOSYNTHESIS;
D O I：
10.1016/j.biortech.2019.121945
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Static magnetic fields (SMF) influence the metabolism of microorganisms, however, there is no knowledge explaining how SMF act in cells. This study aimed at evaluating the SMF (30 mT) effect on photosynthetic performance, growth and biomass composition of the cyanobacterium Arthrospira platensis SAG 21.99. A. platensis was cultivated under 30 mT applied for 1 h d(-1) and 24 h for 10 d in glass bottles. SMF in both conditions increased cellular growth, achieving a 30% higher biomass concentration. SMF applied for 1 h d(-1) increased the pigments and carbohydrate content. The quantum yield was used as an indicator of the photosystem II (PSII) activity and was shown to have been positively affected. SMF for 1 h d(-1) had a significant effect on the OJIP curves. This is the first study that evaluated the photosynthetic activity in cyanobacteria cultures under SMF action.
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页数：6
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