Altered leaf and root emissions from onion (Allium cepa L.) grown under elevated CO2 conditions

Jasoni, Richard L.; Kane, Chad D; Green, Cary; Peffley, Ellen B.; Tissue, David T.; Thompson, Leslie; Payton, Paxton; Paré, Paul W.

doi:10.1016/j.envexpbot.2003.11.006

Cited by 31 publications

(16 citation statements)

References 22 publications

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“…According to this hypothesis, there is an increased production of C-based plant secondary compounds when there is an excess of carbon compared to what is required for plant growth. Increased production of some C-based VOCs under elevated CO 2 conditions has been demonstrated for conifers (Constable et al 1999), oaks (Togneti et al 1998, Loreto et al 2001 and for cultivated plants (Jasoni et al 2004). Similar increases of VOC production are expected under higher O 3 concentrations, as demonstrated for homoterpenes in lima beans (Vuorinen et al 2004), and limonenes in Mediterranean plant species (Llusia et al 2002).…”

supporting

confidence: 59%

Climate change and its effects on terrestrial insects and herbivory patterns

Cornelissen¹

2011

Neotrop. entomol.

193

117

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Climate change and extreme weather events affect plants and animals and the direct impact of anthropogenic climate change has been documented extensively over the past years. In this review, I address the main consequences of elevated CO 2 and O 3 concentrations, elevated temperature and changes in rainfall patterns on the interactions between insects and their host plants. Because of their tight relationship with host plants, insect herbivores are expected to suffer direct and indirect effects of climate change through the changes experienced by their host plants, with consequences to population dynamics, community structure and ecosystem functioning. Introducti onClimate change and extreme weather events affect plants and animals and the direct impact of anthropogenic climate change has been documented on every continent, in every ocean, and in most major taxonomic groups (Parmesan 2006 and references therein). As a consequence of recent human activities and its effects on global climate, plants will face new environmental conditions in the near future, such as elevated CO 2 and O 3 concentrations, elevated temperature and UV radiation, and changes in rainfall patterns over the seasons. Insects represent almost half of the biodiversity so far described (Speight et al 1999) and are central pieces on ecosystem structure and function (Crawley 1983). Because of their tight relationship with host plants, insect herbivores are expected to suffer direct and indirect effects of climate change through the changes experienced by their host plants.Global climatic changes are expected to impact insect-plant interactions in several ways. They might affect insects directly, through changes in physiology, behavior and life history parameters, as well as indirectly, through changes experienced by host plants in their morphology (Barnes et al 1988 (Gifford et al 1996, Yadugiri 2010) and patterns of richness, diversity and abundance (Thuiller et al 2005, Kazakis et al 2007. Insects play important roles in ecosystem services, acting as herbivores, pollinators, predators and parasitoids, and changes in their abundance and diversity have the potential to alter the services they provide (Hillstrom & Lindroth 2008). The number of studies reporting climate change effects on insects has rapidly increased during the past 20 years. A keyword search for "climate change" and "insects" in the Science Citation Index Expanded (1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010) resulted in almost 500 references, with a sharp increase over the past ive years (277 studies from 2006 to 2010, compared with 102 references from 2001 to 2005). As a result, a great body of literature has accumulated and several other authors reviewed the topic, both qualitatively (e.g., Watt et al 1995, Lindroth 1996, Bezemer & Jones 1998, Parmesan 2006, Tylianakis et al 2008 and quantitatively, using meta-analytical techniques (e.g., Zvereva & Kozlov 2006, Stiling & Cornelissen 2007, Wu et...

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supporting

confidence: 59%

Climate change and its effects on terrestrial insects and herbivory patterns

Cornelissen¹

2011

Neotrop. entomol.

193

117

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“…Odd-chain ketones 2-undecanone and 2-tridecanone were previously reported in raw onions [6]. Although the function of these methyl ketones has not been reported in onions, these metabolites are present in tomato trichomes and confer insect resistance against a major agricultural pest, spiders [50][51][52][53]. The reactions by which methyl ketones are synthesized in plants have not been reported, but it has been hypothesized that these compounds could be synthesized either from betaoxidation of fatty acids or by direct oxidation of hydrocarbons [54].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of aroma profile differences between sué, sautéed, and pan-fried onions using an innovative olfactometric approach

Villière

Roy

Fillonneau

et al. 2015

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Background: Onions (Allium cepa) are widely used as a flavor agent ingredient in culinary preparations to bring specific cooked onion notes. In this study, three traditional types of preparations-sué, sautéed, and pan-fried onions-were used to investigate their differences in aroma profile. Results: Headspace solid phase micro-extraction (HS-SPME) and gas chromatography (GC) coupled with mass spectrometry (MS), flame ionization detection (FID), and olfactometry were used to analyze the onion preparations. The study enables to identify 66 major compounds in the preparations. Among these compounds, sulfur compounds, aldehydes, and furans were the most represented. The pan-fried onion preparation distinguishes itself by the highest number of compounds represented in a large amount. This result is consistent with this mode of cooking that combines high temperature with long cooking time and favors the formation of compounds from the Maillard reaction and lipid oxidation. In comparison, the sué and sautéed preparations contain globally fewer compounds and, for most of them, in a lower amount compared to the pan-fried preparation. An innovative olfactometric approach was performed, based on a laboratory-developed software using an aroma wheel especially designed for the study of cooked onion. It enables an intuitive, efficient, and precise characterization of odor events along elution. A statistical comparison of intensities perceived for each odor detected during olfactometric analysis was used to understand the aroma balance and nuances perceived for these three traditional onion preparations. In accordance with chromatographic results, the pan-fried onion displays the highest number of odorant zones (65) associated with higher intensity scores and notably, to an enhanced perception of some Maillard compounds. Sué and sautéed onion profiles show an analog number of odorant zones (50 and 53), but the sautéed onion displays higher intensity scores and a particular contribution from pyrazines.

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“…Influencing crop growth durations, effects on yield are attributed to temperature as a major determinant of onion crop growth and yield [54,60]. Onion grown at 1000 µmol mol −1 CO 2 responded with a 22% increase in photosynthesis and with >40% higher biomass on average compared to ambient CO 2 level at 400 µmol mol −1 [61]. So, elevated CO 2 may have a positive effect on onion growth.…”

Section: Discussionmentioning

confidence: 99%

Model and Growth Stage Based Variability of the Irrigation Demand of Onion Crops with Predicted Climate Change

Schmidt

Zinkernagel

2017

Water

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Predicted climate change will affect agricultural water resources. Particularly vegetable crops will be concerned due to high water demand and high vulnerability to water scarcity. Present vegetable production already requires irrigation water. To assess future irrigation demand, the impact of climate change needs to be revealed region-and crop-specifically. For robust predictions, a wide range of scenarios has to be simulated using different climate models. The aim of this study is to identify the climate change impact on water availability, precipitation-free periods and irrigation demand of onion crops cultivated in a German model region. Focus is on crop-specific climatic water balance, considering soil characteristics and temperature-driven plant growth. Simulated climate parameters vary between four climate models. However, in all scenarios climate parameters indicate an increasing water demand until 2100. While amount of irrigation water will not increase tremendously, occurrence and duration of dry periods will require efficient irrigation infrastructure and management.

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Altered leaf and root emissions from onion (Allium cepa L.) grown under elevated CO2 conditions

Cited by 31 publications

References 22 publications

Climate change and its effects on terrestrial insects and herbivory patterns

Climate change and its effects on terrestrial insects and herbivory patterns

Evaluation of aroma profile differences between sué, sautéed, and pan-fried onions using an innovative olfactometric approach

Model and Growth Stage Based Variability of the Irrigation Demand of Onion Crops with Predicted Climate Change

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