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Title

Red and blue light differentially impact retrograde signalling and photoprotection in rice

AuthorsDuan, Liu; Monte, Elena CSIC ORCID; Ruiz-Sola, M. Águila; Couso, Ana; Veciana, Nil; Monte, Elena CSIC ORCID
Issue Date2020
PublisherRoyal Society (Great Britain)
CitationPhilosophical Transactions - B - Biological Sciences 375(1801): 20190402 (2020)
AbstractChloroplast-to-nucleus retrograde signalling (RS) is known to impact plant growth and development. In Arabidopsis, we and others have shown that RS affects seedling establishment by inhibiting deetiolation. In the presence of lincomycin, a chloroplast protein synthesis inhibitor that triggers RS, Arabidopsis light-grown seedlings display partial skotomorphogenesis with undeveloped plastids and closed cotyledons. By contrast, RS in monocotyledonous has been much less studied. Here, we show that emerging rice seedlings exposed to lincomycin do not accumulate chlorophyll but otherwise remain remarkably unaffected. However, by using high red (R) and blue (B) monochromatic lights in combination with lincomycin, we have uncovered a RS inhibition of length and a reduction in the B light-induced declination of the second leaf. Furthermore, we present data showing that seedlings grown in high B and R light display different non-photochemical quenching capacity. Our findings support the view that excess B and R light impact seedling photomorphogenesis differently to photoprotect and optimize the response to high-light stress.
DescriptionThis article is part of the theme issue ‘Retrograde signalling from endosymbiotic organelles'.
Publisher version (URL)https://doi.org/10.1098/rstb.2019.0402
URIhttp://hdl.handle.net/10261/220490
DOI10.1098/rstb.2019.0402
ISSN0962-8436
E-ISSN1471-2970
Appears in Collections:(CRAG) Artículos




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