Characterization of high temperature-tolerant strains of Pyropia yezoensis

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Title
Characterization of high temperature-tolerant strains of Pyropia yezoensis
Author(s)
Yoon Ju Shin; Sung Ran Min; Da Yeon Kang; Jong Min Lim; E J Park; M S Hwang; D W Choi; J W Ahn; Y I Park; Won Joong Jeong
Bibliographic Citation
Plant Biotechnology Reports, vol. 12, pp. 365-373
Publication Year
2018
Abstract
High-temperature stress related to global warming reduces the growth and productivity of seaweeds. Thus, the development of new strains is urgently required for maintaining or even enhancing the productivity of useful seaweeds such as red alga Pyropia yezoenesis in an increasingly warmer sea environment. To develop competitive high-temperature-tolerant strains of P. yezoensis (Sugwawon no. 104), we screened libraries of gamma-irradiated strains and identified high-temperature-resistant (HTR) mutants. Our results showed that HTR-1 and HTR-2 grew well at higher temperatures that inhibited the growth of the wild-type strain. The efficiency of conchosporangium maturation and conchospore release of HTR-1 was similar to or higher than the wild-type strain. Moreover, thallus growth, pigment content, photosynthetic efficiency, and monospore release from the growing thallus in HTR-1 could be maintained even at high temperature. Taken together, our data demonstrate that HTR-1 may be suitable for industrial cultivation at sea, even at elevated temperatures.
Keyword
ConchocelisGametophyteGamma radiation mutantsHigh temperaturePyropia yezoensis
ISSN
1863-5466
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s11816-018-0499-2
Type
Article
Appears in Collections:
Division of Biomaterials Research > Plant Systems Engineering Research > 1. Journal Articles
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