NDLI: Effects of lowered carbon supplies on two farmed red seaweeds, Pyropia haitanensis (Bangiales) and Gracilaria lemaneiformis (Gracilariales), grown under different sunlight conditions

Content Provider	Springer Nature Link
Author	Jiang, Heng Zou, Dinghui Chen, Binbin
Copyright Year	2016
Abstract	Growth and photosynthesis of cultivated seaweeds usually suffer carbon limitation during cultivation in the field. Pyropia haitanensis and Gracilaria lemaneiformis, collected from Nan’ao Island, Shantou, China, were cultured under ambient carbon and decreased carbon supply, with ambient sunlight and decreased sunlight conditions, aiming to investigate how the decreased carbon supply and sunlight conditions affect growth and photosynthesis in these two maricultured seaweed species. Decreased carbon supply significantly lowered the relative growth rate (RGR), quantum efficiency of open PS II (F $_{v}$′/F $_{m}$′), maximum photosynthetic electron transport rate (rETR$_{m}$), and NO$_{3}$ $^{−}$ uptake rate in both of the two seaweeds. Under ambient sunlight condition, the RGR of the P. haitanensis and G. lemaneiformis grown at decreased carbon supply was reduced about 83 and 95 %, respectively, compared with the algae grown at ambient carbon condition. The RGR, F $_{v}$′/F $_{m}$′, and NO$_{3}$ $^{−}$ uptake rate were higher in P. haitanensis but were lower in G. lemaneiformis, with under decreased sunlight compared to ambient sunlight. The results indicated that decreased carbon supply reduced growth and PS II activity in both of the seaweeds, with the reduction being greater in G. lemaneiformis than in P. haitanensis. Additionally, G. lemaneiformis was adapted to grow at relative higher light conditions than P. haitanensis.
Starting Page	3469
Ending Page	3477
Page Count	9
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	28
Issue Number	6
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-06-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Decreased carbon supply Sunlight Growth Photosynthesis Pyropia haitanensis Gracilaria lemaneiformis Plant Sciences Freshwater & Marine Ecology Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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