Remote sensing of future competitors: impacts on plant defenses.

Proceedings of the National Academy of Sciences of the United States of America
Miriam M IzaguirreCarlos L Ballaré

Abstract

Far-red radiation (FR) reflected by green tissues is a key signal that plants use to detect the proximity of future competitors. Perception of increased levels of FR elicits a suite of responses collectively known as the shade-avoidance syndrome, which includes increased stem elongation, production of erect leaves, and reduced lateral branching. These responses improve the access to light for plants that occur in crowded populations. Responses to the proximity of competitors are known to affect the susceptibility to disease and predation in several organisms, including social animals. However, the impacts of warning signals of competition on the expression of defenses have not been explicitly investigated in plants. In the experiments reported here, we show that reflected FR induced a dramatic down-regulation of chemical defenses in wild tobacco (Nicotiana longiflora). FR altered the expression of several defense-related genes, inhibited the accumulation of herbivore-induced phenolic compounds, and augmented the performance of the specialist herbivore Manduca sexta. Complementary studies with tomato suggested that the effects of FR on defenses are mediated by the photoreceptor phytochrome B. The central implication of these res...Continue Reading

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Citations

Jun 4, 2008·Journal of Chemical Ecology·Richard K Zimmer, Cheryl Ann Zimmer
Mar 3, 2009·Proceedings of the National Academy of Sciences of the United States of America·Javier E MorenoCarlos L Ballaré
Sep 22, 2010·Proceedings of the National Academy of Sciences of the United States of America·Venkatesan RadhikaWilhelm Boland
Jun 28, 2011·Journal of Experimental Botany·Kemal Kazan, John M Manners
Dec 6, 2011·Journal of Experimental Botany·R Kooke, J J B Keurentjes
Jan 28, 2012·Journal of Experimental Botany·Saijaliisa KangasjärviGraham Noctor
Apr 18, 2012·Genes & Development·Lin LiJoanne Chory
Jul 18, 2012·Plant Physiology·Carlos L BallaréRonald Pierik
Jun 23, 2010·BMC Plant Biology·Amanda K BrozJorge M Vivanco
Feb 23, 2010·PloS One·Venkatesan RadhikaMartin Heil
Jul 7, 2012·Ecology·Alyssa S Hakes, James T Cronin
May 15, 2012·The Arabidopsis Book·Jorge J Casal
Feb 5, 2013·Annual Review of Plant Biology·Jorge J Casal
Jul 27, 2014·Journal of Chemical Ecology·Javier E Moreno, Carlos L Ballaré
Jan 30, 2014·Annual Review of Plant Biology·Carlos L Ballaré
Nov 12, 2015·International Journal of Molecular Sciences·Sofia CarettoVincenzo Lattanzio
Sep 6, 2011·Biotechnology Advances·I RubertiG Morelli
Mar 11, 2011·Phytochemistry·Robert GlinwoodJan Pettersson
Jan 11, 2011·Trends in Plant Science·Carlos L Ballaré
Dec 29, 2009·Trends in Plant Science·Wouter Kegge, Ronald Pierik
Feb 22, 2008·Trends in Plant Science·Marta Berrocal-Lobo, Antonio Molina
Apr 28, 2009·The Plant Journal : for Cell and Molecular Biology·Céline SorinJaime F Martínez-García
Jul 20, 2007·Environmental Microbiology·Orit BarneahAriel Kushmaro
Apr 11, 2008·Ecology Letters·Richard Karban
Nov 14, 2007·The New Phytologist·Fernando ValladaresJosé M Gómez
Oct 12, 2011·The Plant Journal : for Cell and Molecular Biology·Sabrina IñigoPablo D Cerdán
Jan 19, 2011·Plant, Cell & Environment·Krishna H Morker, Michael R Roberts
Feb 4, 2011·The Plant Journal : for Cell and Molecular Biology·Benjamin ColeJoanne Chory
Oct 24, 2009·The EMBO Journal·Patricia HornitschekChristian Fankhauser
Nov 1, 2013·The New Phytologist·Graciela García-Guzmán, Martin Heil
Apr 3, 2014·Plant, Cell & Environment·Ronald PierikMarcel Dicke

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