Red and blue light differentially impact retrograde signalling and photoprotection in rice
Duan, Liu (Centre de Recerca en Agrigenòmica)
Ruiz-Sola, M. Águila (Centre de Recerca en Agrigenòmica)
Couso, Ana (Centre de Recerca en Agrigenòmica)
Veciana, Nil (Centre de Recerca en Agrigenòmica)
Monte Collado, Elena (Centre de Recerca en Agrigenòmica)

Data:	2020
Resum:	Chloroplast-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.
Ajuts:	Ministerio de Ciencia e Innovación PGC2018-099987-B-I00 Ministerio de Ciencia e Innovación BIO2015-68460-P Ministerio de Economía y Competitividad SEV-2015-0533 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-718
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Blue and red light ; Photomorphogenes ; Photoprotection ; Retrograde signalling ; Non-photochemical quenching ; Rice
Publicat a:	Philosophical transactions of the Royal Society B, Vol. 375, issue 1801 (May 2020) , art. 20190402, ISSN 0962-8436

DOI: 10.1098/rstb.2019.0402
PMID: 32362254

Article 33 p, 2.5 MB

Material suplementari 8 p, 3.7 MB

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