Cryptochromes are the dominant photoreceptors mediating heliotropic responses of Arabidopsis inflorescences
Inflorescence movements in response to natural gradients of sunlight are frequently observed in the plant kingdom and are suggested to contribute to reproductive success. Although the physiological and molecular bases of light-mediated tropisms in vegetative organs have been thoroughly investigated,...
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| Otros Autores: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2021serrano.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 022 | |a 0140-7791 | ||
| 024 | |a 10.1111/pce.14139 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 245 | 1 | 0 | |a Cryptochromes are the dominant photoreceptors mediating heliotropic responses of Arabidopsis inflorescences |
| 520 | |a Inflorescence movements in response to natural gradients of sunlight are frequently observed in the plant kingdom and are suggested to contribute to reproductive success. Although the physiological and molecular bases of light-mediated tropisms in vegetative organs have been thoroughly investigated, the mechanisms that control inflorescence orientation in response to light gradients under natural conditions are not well understood. In this work, we have used a combination of laboratory and field experiments to investigate light-mediated re-orientation of Arabidopsis thaliana inflorescences. We show that inflorescence phototropism is promoted by photons in the UV and blue spectral range (≤500 nm) and depends on multiple photoreceptor families. Experiments under controlled conditions show that UVR8 is the main photoreceptor mediating the phototropic response to narrowband UV-B radiation, and phototropins and cryptochromes control the response to narrowband blue light. Interestingly, whereas phototropins mediate bending in response to low irradiances of blue, cryptochromes are the principal photoreceptors acting at high irradiances. Moreover, phototropins negatively regulate the action of cryptochromes at high irradiances of blue light. Experiments under natural field conditions demonstrate that cryptochromes are the principal photoreceptors acting in the promotion of the heliotropic response of inflorescences under full sunlight. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a ARABIDOPSIS THALIANA | ||
| 653 | |a CRYPTOCHROMES | ||
| 653 | |a HELIOTROPISM | ||
| 653 | |a INFLORESCENCE | ||
| 653 | |a UVR8 | ||
| 700 | 1 | |a Serrano, Alejandro M. |u Instituto Argentino de Investigación de las Zonas Aridas. Mendoza, Argentina. |9 67630 | |
| 700 | 1 | |a Vanhaelewyn, Lucas |u Ghent University. Department of Biology. Laboratory of Functional Plant Biology. Ghent, Belgium. |9 67631 | |
| 700 | 1 | |a Vandenbussche, Filip |u Ghent University. Department of Biology. Laboratory of Functional Plant Biology. Ghent, Belgium. |9 67633 | |
| 700 | 1 | |a Boccalandro, Hernán Esteban |u Universidad Nacional de Cuyo. Instituto de Biología Agrícola de Mendoza. Chacras de Coria, Mendoza, Argentina. |9 67603 | |
| 700 | 1 | |a Maldonado, Belén |u Instituto Argentino de Investigación de las Zonas Aridas. Mendoza, Argentina. |9 73960 | |
| 700 | 1 | |a Straetend, Dominique Van Der |u Ghent University. Department of Biology. Laboratory of Functional Plant Biology. Ghent, Belgium. |9 67632 | |
| 700 | 1 | |a Ballaré, Carlos Luis |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas (IIBio). Buenos Aires, Argentina. |9 672 | |
| 700 | 1 | |a Arana, María Verónica |u Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche (EEA Bariloche). San Carlos de Bariloche, Río Negro, Argentina. |9 67243 | |
| 773 | 0 | |t Plant, cell and environment |w SECS000149 |g Vol.44, no.10 (2021), p.3246–3256, il., grafs. | |
| 856 | |f 2021serrano |i En reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2021serrano.pdf |x ARTI202206 | ||
| 856 | |u https://www.wiley.com/ |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||