Polyamine uptake transporter 2 (put2) and decaying seeds enhance phyA-mediated germination by overcoming PIF1 repression of germination
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F19%3A00005371" target="_blank" >RIV/00027006:_____/19:00005371 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/19:73597033
Result on the web
<a href="https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1008292" target="_blank" >https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1008292</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1371/journal.pgen.1008292" target="_blank" >10.1371/journal.pgen.1008292</a>
Alternative languages
Result language
angličtina
Original language name
Polyamine uptake transporter 2 (put2) and decaying seeds enhance phyA-mediated germination by overcoming PIF1 repression of germination
Original language description
Red light promotes germination after activating phytochrome phyB, which destabilizes the germination repressor PIF1. Early upon seed imbibition, canopy light, unfavorable for photosynthesis, represses germination by stabilizing PIF1 after inactivating phyB. Paradoxically, later upon imbibition, canopy light stimulates germination after activating phytochrome phyA. phyA-mediated germination is poorly understood and, intriguingly, is inefficient, compared to phyB-mediated germination, raising the question of its physiological significance. A genetic screen identified polyamine uptake transporter 2 (put2) mutants that overaccumulate polyamines, a class of antioxidant polycations implicated in numerous cellular functions, which we found promote phyA-mediated germination. In WT seeds, our data suggest that canopy light represses polyamines accumulation through PIF1 while red light promotes polyamines accumulation. We show that canopy light also downregulates PIF1 levels, through phyA; however, PIF1 reaccumulates rapidly, which limits phyA-mediated germination. High polyamines levels in decaying seeds bypass PIF1 repression of germination and stimulate phyA-mediated germination, suggesting an adaptive mechanism promoting survival when viability is compromised.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10608 - Biochemistry and molecular biology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PLOS genetics
ISSN
1553-7404
e-ISSN
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Volume of the periodical
15
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
24
Pages from-to
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UT code for WoS article
000478689100034
EID of the result in the Scopus database
2-s2.0-85071064464