Results 151 to 160 of about 5,291 (186)
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Ecophysiological comparison of direct and indirect defenses in Nicotiana attenuata
Oecologia, 2000After herbivore attack, plants launch a suite of direct and indirect defense responses that must be coordinated if plants are to realize a fitness benefit from these responses. Here we characterize the volatile emissions in the native tobacco plant, Nicotiana attenuata Torr.
Halitschke, R. +4 more
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Unpredictability of nectar nicotine promotes outcrossing by hummingbirds in Nicotiana attenuata
The Plant Journal, 2012Summary Many plants use sophisticated strategies to maximize their reproductive success via outcrossing. Nicotiana attenuata flowers produce nectar with nicotine at concentrations that are repellent to hummingbirds, increasing the number of flowers visited per plant.
Kessler, D. +6 more
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Isolation and characterization of the threonine deaminase promoter in Nicotiana attenuata
Plant Science, 2006The enzyme encoded by the threonine deaminase (TD) gene catalyzes the conversion of threonine to α-keto butyrate in the biosynthesis of isoleucine (Ile). In Nicotiana attenuata, TD transcripts accumulate constitutively in cotyledons and flowers and are elicited in leaves by wounding, herbivore attack, and methyl jasmonic acid (MeJA) treatment.
Kang, J., Baldwin, I.
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Herbivore-induced allene oxide synthase transcripts and jasmonic acid in Nicotiana attenuata
Phytochemistry, 2001Exogenous jasmonate treatment of Nicotiana attenuata Torr. ex Wats. plants elicits durable resistance against herbivores and attack from its specialist herbivore, Manduca sexta, results in an amplification of the transient wound-induced increase in endogenous jasmonic acid levels (JA).
Ziegler, J., Keinänen, M., Baldwin, I.
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A robust genome-editing method for wild plant species Nicotiana attenuata
Plant Biotechnology Reports, 2020CRISPR genome-editing techniques theoretically enable us to edit any genes in any plants. However, plant tissue culture is required for generating targeted mutants in plants, except in some model plant species such as Arabidopsis thaliana. To modify ecologically or agronomically important traits in plants using the CRISPR system, a robust plant ...
Moonyoung Kang +4 more
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Cytokinins shape plant-herbivore interactions in Nicotiana attenuata
2018Cytokinins (CK), a group of plant hormones, are well known for their functions in growth and development as well as in environmental interactions. Except for some prominent examples like green islands and leafgalls caused by endophytic insects via CK, only little is known about the function of CK in plantinsect interaction.
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Functional specialization of Nicotiana attenuata phytochromes in leaf development and flowering time
Journal of Integrative Plant Biology, 2017AbstractPhytochromes mainly function in photoautotrophic organisms to adjust growth in response to fluctuating light signals. The different isoforms of plant phytochromes often display both conserved and divergent roles, presumably to fine‐tune plant responses to environmental signals and optimize fitness.
Variluska Fragoso +4 more
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Patterns and Consequences of Benzyl Acetone Floral Emissions from Nicotiana attenuata Plants
Journal of Chemical Ecology, 1997The emission of a single compound, benzyl acetone (BA, 4-phenyl-2-butanone), is barely detectable during the day in the headspace of flowers of the self-compatible disturbance species Nicotiana attenuata, but it increases dramatically (50×) in the evening, becoming the dominant component in the floral headspace.
Baldwin, I. +3 more
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ABA-INSENSITIVE 4 promotes nicotine biosynthesis under high light in Nicotiana attenuata
Plant ScienceNicotine is a primary alkaloid-derived secondary metabolite found in tobacco (Nicotiana spp.). Excessive light exposure damages chloroplasts and enhances the production of protective secondary metabolites. However, the impact of high light (HL) on nicotine biosynthesis has not been thoroughly explored.
Bo, Lei +6 more
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Journal of Chemical Ecology, 2003
We investigated the impact of leaf vascular connections on systemically transmitted herbivore-induced gene expression in Nicotiana attenuata. Although systemic signaling is clearly associated with the plant vascular system, few studies consider vascular architecture when measuring systemically induced defenses. N.
Schittko, U., Baldwin, I.
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We investigated the impact of leaf vascular connections on systemically transmitted herbivore-induced gene expression in Nicotiana attenuata. Although systemic signaling is clearly associated with the plant vascular system, few studies consider vascular architecture when measuring systemically induced defenses. N.
Schittko, U., Baldwin, I.
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