“Phenotypic plasticity guides Moricandia arvensis divergence and convergence across the Brassicaceae floral morphospace“… Este es el título de nuestro último trabajo de investigación, publicado en la revista New Phytologist. Te resulta complicado entenderlo? o poco interesante? Mira y escucha antes el vídeo que hemos preparado para explicar este interesante proceso evolutivo que hemos encontrado en nuestro sistema de estudio preferido: la planta Moricandia arvensis.
Esperamos que ahora entiendas mucho mejor qué hacemos en nuestro trabajo de investigación! Si es así, dale difusión a este vídeo para que otras personas aprendan sobre evolución, plasticidad fenotípica, polinizadores, y otros temas relacionados con este fascinante mundo de la investigación!
Si quieres saber un poco más sobre plasticidad fenotípica y polinización, este vídeo te interesa…
Cuando en el año 2008 comenzamos a elaborar vídeos de animación para transferir al conjunto de la sociedad la información publicada en los artículos científicos que escribíamos, uno de los objetivos era trasladar esta información de manera rápida y comprensible a un público no familiarizado con nuestro trabajo de investigación. La realidad nos ha puesto en nuestro sitio y … resulta que no somos capaces de hacer el trabajo de divulgación científica en paralelo al de investigación. Han tenido que pasar unos meses desde la publicación de nuestro estudio sobre plasticidad fenotípica y nicho de polinizadores*, pero… ahora, por fin, podemos mostraros el vídeo que hemos preparado para tratar de incrementar la difusión social de este estudio. Poned pantalla grande, dadle volumen y … disfrutadlo cómo lo hemos hecho los autores con el trabajo realizado.
En este vídeo mostramos qué es la plasticidad fenotípica y cómo la plasticidad individual dentro de las flores de Moricandia arvensis (Brassicaceae) permite a esta especie de planta modificar su nicho de polinización.
*Este vídeo muestra los resultados del estudio: Gómez JM, Perfectti F, Armas C, Narbona E, González-Megías A, Navarro L, DeSoto L, Torices R (2020). Within-individual phenotypic plasticity in flowers fosters pollination niche shift. Nature Communications 11: 4019 https://doi.org/10.1038/s41467-020-17875-1
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Phenotypic plasticity, climate change and pollinators
A drastic change in floral phenotype causes the same plants to attract different pollinators and reproduce in harsh climates
Phenotypic plasticity is the ability of a genotype to produce different phenotypes in response to changes in the environment. This is an essential property of living beings but its role in adaptation and acclimatization to environmental changes is not yet fully known.
A Moricandia arvensis plant with its «typical» spring flower phenotype (Photo by F. Perfectti).
As part of a truly multidisciplinary team of researchers from the Experimental Station of Arid Zones (CSIC) and the Universities of Granada, Vigo, Pablo Olavide and Rey Juan Carlos, we have just published an article in the top-ranking journal Nature Communications demonstrating experimentally, both in natural conditions and in the laboratory, the phenotypic plasticity of the flowers of a plant species living in semi-arid environments.
A comparison of the different flower phenotypes this plant produces in spring (left) or harsh summer (right) conditions (Photo by F. Perfectti).
In spring, this species – the crucifer Moricandia arvensis – produces large, lilac-colored, UV-reflecting flowers in the shape of a cross. These flowers attract mainly large, long-tongued bees as pollinators. However, unlike most coexisting species, M. arvensis maintains flowering during the dry, hot summer of the western Mediterranean. This is due to its plasticity in key vegetative traits, including photosynthetic traits, that adjust its metabolism to these extreme temperatures and water deficit conditions. The summer’s high temperatures and longer light hours trigger changes in the expression of more than 625 genes in the flower that lead to these plants to produce different radical flowers. Whereas in spring flowers were large and cross-shaped, in summer they are small and rounded; whereas they were lilac and reflected UV, in summer they are white and absorb UV. These summer flowers attract a different set of pollinators composed of more generalist species. This change in the pollinator set (the pollination niche) allows this plant to reproduce successfully under the challenging summer conditions. Phenotypic plasticity for flower, vegetative, and photosynthetic traits seems to allow M. arvensis to cope with anthropogenic disturbances and climate change.
The phenotypic plasticity exhibited by individuals of the Moricandia arvensis plant promotes the production of large, lilac-colored, cross-shaped flowers that reflect UV and attract mainly large long-tongued bees in spring and smaller, rounded white flowers, which absorb UV, in summer, when environmental conditions are difficult for many organisms to survive. These «summer» flowers are visited by generalist pollinators and this allows the plant to continue to reproduce when environmental conditions are harsh.
Gómez JM, Perfectti F, Armas C, Narbona E, González-Megías A, Navarro L, DeSoto L, Torices R (2020). Within-individual phenotypic plasticity in flowers fosters pollination niche shift. Nature Communications 11:4019https://doi.org/10.1038/s41467-020-17875-1
