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Auxin Produced by t...
Auxin Produced by the Indole-3-Pyruvic Acid Pathway Regulates Development and Gemmae Dormancy in the Liverwort Marchantia polymorph
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- Eklund, D. Magnus (author)
- Monash University
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Ishizaki, Kimitsune (author)
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Flores-Sandoval, Eduardo (author)
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Kikuchi, Saya (author)
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Takebayashi, Yumiko (author)
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Tsukamoto, Shigeyuki (author)
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Hirakawa, Yuki (author)
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Nonomura, Maiko (author)
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Kato, Hirotaka (author)
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Kouno, Masaru (author)
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- Bhalerao, Rishikesh P. (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology,King Saud University
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- Lagercrantz, Ulf (author)
- Uppsala universitet,Växtekologi och evolution,Uppsala University
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Kasahara, Hiroyuki (author)
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Kohchi, Takayuki (author)
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Bowman, John L. (author)
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(creator_code:org_t)
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- 2015-06-02
- 2015
- English.
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In: The Plant Cell. - : Oxford University Press (OUP). - 1040-4651 .- 1532-298X. ; 27:6, s. 1650-1669
- Related links:
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http://www.plantcell...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://res.slu.se/i...
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Abstract
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- The plant hormone auxin (indole-3-acetic acid [IAA]) has previously been suggested to regulate diverse forms of dormancy in both seed plants and liverworts. Here, we use loss-and gain-of-function alleles for auxin synthesis-and signaling-related genes, as well as pharmacological approaches, to study how auxin regulates development and dormancy in the gametophyte generation of the liverwort Marchantia polymorpha. We found that M. polymorpha possess the smallest known toolkit for the indole-3-pyruvic acid (IPyA) pathway in any land plant and that this auxin synthesis pathway mainly is active in meristematic regions of the thallus. Previously a Trp-independent auxin synthesis pathway has been suggested to produce a majority of IAA in bryophytes. Our results indicate that the Trp-dependent IPyA pathway produces IAA that is essential for proper development of the gametophyte thallus of M. polymorpha. Furthermore, we show that dormancy of gemmae is positively regulated by auxin synthesized by the IPyA pathway in the apex of the thallus. Our results indicate that auxin synthesis, transport, and signaling, in addition to its role in growth and development, have a critical role in regulation of gemmae dormancy in M. polymorpha.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Cellbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Cell Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
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- ref (subject category)
- art (subject category)
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Eklund, D. Magnu ...
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Ishizaki, Kimits ...
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Flores-Sandoval, ...
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Kikuchi, Saya
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Takebayashi, Yum ...
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Tsukamoto, Shige ...
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show more...
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Hirakawa, Yuki
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Nonomura, Maiko
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Kato, Hirotaka
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Kouno, Masaru
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Bhalerao, Rishik ...
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Lagercrantz, Ulf
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Kasahara, Hiroyu ...
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Kohchi, Takayuki
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Bowman, John L.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Biochemistry and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Cell Biology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Botany
- Articles in the publication
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The Plant Cell
- By the university
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Uppsala University
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Swedish University of Agricultural Sciences