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Selection and functional analysis of a Pyropia yezoensis ammonium transporter PyAMT1 in potassium deficiency

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Title: Selection and functional analysis of a Pyropia yezoensis ammonium transporter PyAMT1 in potassium deficiency
Authors: Adams, Eri Browse this author
Mikami, Koji Browse this author →KAKEN DB
Shin, Ryoung Browse this author
Keywords: Ammonium transporter
Full-length cDNA library
Potassium deficiency
Pyropia yezoensis
Salt tolerance
Issue Date: Oct-2017
Journal Title: Journal of Applied Phycology
Volume: 29
Issue: 5
Start Page: 2617
End Page: 2626
Publisher DOI: 10.1007/s10811-017-1196-1
Abstract: Seaweeds are believed to have developed unique mechanisms to maintain optimal cellular potassium and sodium concentrations in order to survive in the saline marine environment. To gain a molecular understanding of underlying potassium/sodium homeostasis in seaweeds, full-length cDNA libraries from the multiple stages in the life cycle, including gametophytes, conchosporangia and sporophytes of a marine red alga, Pyropia yezoensis, were constructed. A large portion of genes from each library through the life cycle was revealed to be functionally unknown reconfirming the uniqueness of P. yezoensis genes in terms of evolutionary lineage. Genes that could potentially contribute to potassium deficiency tolerance were selected from the potassium uptake defective Escherichia coli strain expressing gametophytes and conchosporangia libraries under the low potassium conditions. Of those, an ammonium transporter gene, PyAMT1, was demonstrated to enhance potassium deficiency tolerance effectively when expressed in the E. coli strain. Potential roles of PyAMT1 and other candidate components in this context are discussed.
Rights: This is a post-peer-review, pre-copyedit version of an article published in Journal of Applied Phycology. The final authenticated version is available online at:
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三上 浩司

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