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Chloroplast-encoded serotonin N-acetyltransferase in the red alga Pyropia yezoensis: gene transition to the nucleus from chloroplasts.

Byeon Y, Yool Lee H, Choi DW, Back K - J. Exp. Bot. (2014)

Bottom Line: Melatonin was present at 0.16ng g(-1) of fresh mass but increased during heat stress.Phylogenetic analysis of the sequence suggested that PySNAT has evolved from the cyanobacteria SNAT gene via endosymbiotic gene transfer.Additionally, the chloroplast transit peptides of plant SNATs were acquired 1500 million years ago, concurrent with the appearance of green algae.

View Article: PubMed Central - PubMed

Affiliation: Department of Biotechnology, Interdisciplinary Program of Bioenergy and Biomaterials, Bioenergy Research Center, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea.

No MeSH data available.


Related in: MedlinePlus

Melatonin levels in response to heat stress in laver (Pyropia yezoensis). Leafy gametophytes of Pyropia yezoensis were challenged at a high temperature of 25 °C. Laver was collected at each indicated time point. Melatonin levels were quantified by HPLC. Data represent the means±standard deviation of three replicates. An asterisk indicates a significant difference from the wild type (P<0.05).
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Figure 6: Melatonin levels in response to heat stress in laver (Pyropia yezoensis). Leafy gametophytes of Pyropia yezoensis were challenged at a high temperature of 25 °C. Laver was collected at each indicated time point. Melatonin levels were quantified by HPLC. Data represent the means±standard deviation of three replicates. An asterisk indicates a significant difference from the wild type (P<0.05).

Mentions: During its natural life cycle, laver is exposed to various adverse environmental stresses such as drought and temperature changes (Ruangchuay and Notoya, 2003; Park et al., 2012a). Thus, we exposed laver culture to high temperature (25 °C) in vitro to characterize the melatonin response. The melatonin level in control laver was around 0.16ng g–1 of fresh weight (fw), and its levels were consistent within 3h after heat stress (Fig. 6). However, melatonin increased to 0.23ng g–1 fw at 12h after heat stress, suggestive of an induction of melatonin biosynthesis.


Chloroplast-encoded serotonin N-acetyltransferase in the red alga Pyropia yezoensis: gene transition to the nucleus from chloroplasts.

Byeon Y, Yool Lee H, Choi DW, Back K - J. Exp. Bot. (2014)

Melatonin levels in response to heat stress in laver (Pyropia yezoensis). Leafy gametophytes of Pyropia yezoensis were challenged at a high temperature of 25 °C. Laver was collected at each indicated time point. Melatonin levels were quantified by HPLC. Data represent the means±standard deviation of three replicates. An asterisk indicates a significant difference from the wild type (P<0.05).
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4321536&req=5

Figure 6: Melatonin levels in response to heat stress in laver (Pyropia yezoensis). Leafy gametophytes of Pyropia yezoensis were challenged at a high temperature of 25 °C. Laver was collected at each indicated time point. Melatonin levels were quantified by HPLC. Data represent the means±standard deviation of three replicates. An asterisk indicates a significant difference from the wild type (P<0.05).
Mentions: During its natural life cycle, laver is exposed to various adverse environmental stresses such as drought and temperature changes (Ruangchuay and Notoya, 2003; Park et al., 2012a). Thus, we exposed laver culture to high temperature (25 °C) in vitro to characterize the melatonin response. The melatonin level in control laver was around 0.16ng g–1 of fresh weight (fw), and its levels were consistent within 3h after heat stress (Fig. 6). However, melatonin increased to 0.23ng g–1 fw at 12h after heat stress, suggestive of an induction of melatonin biosynthesis.

Bottom Line: Melatonin was present at 0.16ng g(-1) of fresh mass but increased during heat stress.Phylogenetic analysis of the sequence suggested that PySNAT has evolved from the cyanobacteria SNAT gene via endosymbiotic gene transfer.Additionally, the chloroplast transit peptides of plant SNATs were acquired 1500 million years ago, concurrent with the appearance of green algae.

View Article: PubMed Central - PubMed

Affiliation: Department of Biotechnology, Interdisciplinary Program of Bioenergy and Biomaterials, Bioenergy Research Center, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea.

No MeSH data available.


Related in: MedlinePlus