No escape? Costs and benefits of leaf de - submergence in the pasture grass Chloris gayana under different flooding regimes

Elongation - induced leaf emergence is one wayfor plants to deal with complete submergence by ‘escaping’ from water. This growth strategy is hypothesised to be more beneficial under single long-term submergence than under repeated short - term submergence events (i.e.fluctuating environment), as cos...

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Detalles Bibliográficos
Otros Autores: Striker, Gustavo Gabriel, Casas, Cecilia, Kuang, Xiaolin, Grimoldi, Agustín Alberto
Formato: Artículo
Lenguaje:Inglés
Materias:
CHLORIS GAYANA CULTIVARS
FLOODING TIMING
LEAF DESICCATION
LEAF GREENNESS
PLANT RECOVERY
RHODES GRASS
SHOOT ELONGATION
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2017striker1.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a No escape? Costs and benefits of leaf de - submergence in the pasture grass Chloris gayana under different flooding regimes 
520 |a Elongation - induced leaf emergence is one wayfor plants to deal with complete submergence by ‘escaping’ from water. This growth strategy is hypothesised to be more beneficial under single long-term submergence than under repeated short - term submergence events (i.e.fluctuating environment), as costs of repeated plant ‘adjustment’ would exceed the initial benefits of shoot elongation. To test this idea, 2 - week - old plants of Chloris gayana Kunth. cv. Fine Cut (a submergencetolerant cultivar first selected by a screening experiment) were grown for 4 weeks under (i) control conditions, (ii) two 1 - week submergence cycles, or (iii) one 2 - week submergence cycle. Additionally, a set of plants were placed below nettings to assess the cost of remaining forcedly submerged. Impeding leaves emergence through nettings did not compromise survival when submergence was 1 - week long, but determined the death of all plants when extended to 2 weeks. Growth as affected by flooding regime revealed that under one 2 - week submergence event, plants accumulated a 2.9 - fold higher dry mass than when they experienced the same submergence duration in separate events along 1week. The ‘escape’ strategy in the grass C. gayana, by which leaf contact with air is re-established, is essential for its survival, and it is more beneficial for plant growth under long-term submergence than under repeated short - term submergence cycles. 
653 |a CHLORIS GAYANA CULTIVARS 
653 |a FLOODING TIMING 
653 |a LEAF DESICCATION 
653 |a LEAF GREENNESS 
653 |a PLANT RECOVERY 
653 |a RHODES GRASS 
653 |a SHOOT ELONGATION 
700 1 |9 11986  |a Striker, Gustavo Gabriel  |u Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fisiología Vegetal.Buenos Aires, Argentina.  |u CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u University of Western Australia. Faculty of Science. School of Agriculture and Environment.Crawley, Australia. 
700 1 |9 4644  |a Casas, Cecilia  |u Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Edafología. Buenos Aires, Argentina. 
700 1 |a Kuang, Xiaolin  |u Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fisiología Vegetal. Buenos Aires, Argentina  |u CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina  |9 35857 
700 1 |9 7964  |a Grimoldi, Agustín Alberto  |u Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura. Buenos Aires, Argentina  |u CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina 
773 |t Functional Plant Biology  |g Vol.44, no.9 (2017), p.899-906, tbls., grafs., fot. 
856 |f 2017striker1  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2017striker1.pdf  |x ARTI201807 
856 |z LINK AL EDITOR  |u http://www.publish.csiro.au 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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