1003 PROXIMITY RESPONSES IN PLANT NEIGHBORHOODS MEDIATED BY PHOTOM ORPHOGENICPROCESSES: MECHANISMS AND AGRICULTURAL IMPLICATIONS

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  • 1 Dept. de Ecología-IFEVA, Univ. de Buenos Aires, Av. San Martin 4453, (1417) Buenos Aires, Argentina

Our understanding of how plants use light signals to detect and respond to the proximity of neighbors has increased dramatically over the last few years. At the same time, the explosion of biotechnological techniques has opened a variety of opportunities to manipulate the photosensory systems of cultivated plants. Therefore, the idea is beginning to emerge that plastic responses of cultivated plants to population density could he deliberately changed by engineering genotypes with altered photomorphogenic behavior. This talk will provide a review of recent developments in the area of seedling photomorphogenesis, which will be used as a platform to evaluate the realism of current models of plant competition and the agricultural implications of interfering with plant photophysiology.

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