http://www.cnr.it/ontology/cnr/individuo/prodotto/ID177872
Regulatory networks for the shade avoidance response (Contributo in atti di convegno)
- Type
- Label
- Regulatory networks for the shade avoidance response (Contributo in atti di convegno) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.cbpa.2009.04.472 (literal)
- Alternative label
I Ruberti (1); G Sessa (1); M Sassi (1); A Ciolfi (1); S Salvucci (1); M Possenti (2); M Carabelli (1); G Morelli (2) (2009)
Regulatory networks for the shade avoidance response
in Annual Meeting of the Society for Experimental Biology, Glasgow, SCOTLAND, June 28-July 01, 2009
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- I Ruberti (1); G Sessa (1); M Sassi (1); A Ciolfi (1); S Salvucci (1); M Possenti (2); M Carabelli (1); G Morelli (2) (literal)
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- http://www.sciencedirect.com/science/article/pii/S1095643309006382 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) Istituto di Biologia e Patoligia Molecolari
(2) Istituto Nazionale di Ricerca per gli Alimenti e la Nutrizione (literal)
- Titolo
- Regulatory networks for the shade avoidance response (literal)
- Abstract
- A plant growing in the field has the unique ability to sense the
presence of other plants growing nearby and adjust its growth rate
accordingly. The early perception of neighbour proximity depends on
the detection of light quality changes.Within a vegetation community,
the ratio of red (R) to far-red (FR) light is lowered by the absorption of R
light by photosynthetic pigments. This light quality change is perceived
as an unambiguous signal of the proximity of neighbours through the
phytochrome system. Upon sensing a low R/FR ratio, a shade avoiding
plant reacts very rapidly and enhances elongation growth at the
expenses of leaf and root development. If the plant succeeds in the
attempt to overgrow its neighbours, the shade avoidance response is
rapidly reverted through phytochrome photoconversion.
Many lines of evidence connect the phytohormone auxin to the rapid
elongation response provoked by light quality changes. Our recent work
establishes that auxinplays a pivotal role in leaf and root responses to low
R/FR aswell, suggesting that this phytohormone may act as a coordinator
of plant growth responses to environmental light quality changes.
Persistency of a low R/FR signal results in attenuation of the shade
avoidance response, which is controlled in part through the action of
the bHLH HFR1/SICS1 transcription factor gene. Our recent data
demonstrate that HFR1/SICS1 functions in the phyB signal transduction
pathway and acts in concert with other transcription factors
modulated through phyA in the adaptation of the plant to this
unfavourable environmental condition. (literal)
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