Abstract
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. This article is part of the theme issue ‘Retrograde signalling from endosymbiotic organelles'.
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Claims 5
Claim · model-written summary
Lincomycin-exposed emerging rice seedlings did not accumulate chlorophyll.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- seedlingse0
- Treatment
- lincomycine0
- Outcome
- chlorophylle0
- Direction
- do not accumulatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“emerging rice seedlings exposed to lincomycin do not accumulate chlorophyll but otherwise remain remarkably unaffected.”
Claim · model-written summary
Lincomycin otherwise left emerging rice seedlings largely unaffected.
- Taxon
- riceOryza sativae0
- Organ / stage
- seedlingse0
- Treatment
- lincomycine0
- Outcome
- otherwise remain remarkably unaffectede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“emerging rice seedlings exposed to lincomycin do not accumulate chlorophyll but otherwise remain remarkably unaffected.”
Claim · model-written summary
High red and blue light with lincomycin revealed retrograde-signaling inhibition of seedling length.
- Treatment
- high red (R) and blue (B) monochromatic lights in combination with lincomycine0
- Outcome
- lengthe0
- Direction
- inhibitione0
Not reportedTaxonComparator
Verbatim
e0“by using high red (R) and blue (B) monochromatic lights in combination with lincomycin, we have uncovered a RS inhibition of length”
Claim · model-written summary
High light with lincomycin reduced blue-light-induced second-leaf declination.
- Organ / stage
- second leafe0
- Treatment
- high red (R) and blue (B) monochromatic lights in combination with lincomycine0
- Outcome
- B light-induced declination of the second leafe0
- Direction
- reductione0
Not reportedTaxonComparator
Verbatim
e0“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.”
Claim · model-written summary
Seedlings grown under high blue and red light differed in non-photochemical quenching capacity.
Not reportedTaxon
Verbatim
e0“seedlings grown in high B and R light display different non-photochemical quenching capacity.”
The same questions in other papers
lincomycin · physiology: pigments · Oryza sativa (rice)Results agree
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- negative
lincomycin · growth · Oryza sativa (rice)Results agree
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light · growth · Oryza sativa (rice)Positive and negative results
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- positive
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