Removal of floral microbiota reduces floral terpene emissions

Peñuelas, Josep; Farré‐Armengol, Gerard; Llusià, Joan; Gargallo‐Garriga, Albert; Rico, Laura; Sardans, Jordi; Terradas, Jaume; Filella, Iolanda

doi:10.1038/srep06727

Cited by 62 publications

(45 citation statements)

References 28 publications

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“…An increase in temperature is also expected to cause changes in the relative composition of floral scents, which could therefore disrupt the effectiveness of floral location by pollinators, because the scents are signals for specialist pollinators [74,75,114,115]. Another recent study has shown that the fragrance of a flower depends on the composition of the fungi and bacteria living on its surface, which in turn is strongly influenced by water availability and temperature [116]. Other phenomena associated with global change can also affect VOC emissions.…”

Section: Impacts Of Altered Emissions Of Fragrances By Leaves and Flomentioning

confidence: 99%

Impacts of Global Change on Mediterranean Forests and Their Services

Peñuelas

Sardans

Filella

et al. 2017

Forests

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122

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The increase in aridity, mainly by decreases in precipitation but also by higher temperatures, is likely the main threat to the diversity and survival of Mediterranean forests. Changes in land use, including the abandonment of extensive crop activities, mainly in mountains and remote areas, and the increases in human settlements and demand for more resources with the resulting fragmentation of the landscape, hinder the establishment of appropriate management tools to protect Mediterranean forests and their provision of services and biodiversity. Experiments and observations indicate that if changes in climate, land use and other components of global change, such as pollution and overexploitation of resources, continue, the resilience of many forests will likely be exceeded, altering their structure and function and changing, mostly decreasing, their capacity to continue to provide their current services. A consistent assessment of the impacts of the changes, however, remains elusive due to the difficulty of obtaining simultaneous and complete data for all scales of the impacts in the same forests, areas and regions. We review the impacts of climate change and other components of global change and their interactions on the terrestrial forests of Mediterranean regions, with special attention to their impacts on ecosystem services. Management tools for counteracting the negative effects of global change on Mediterranean ecosystem- services are finally discussed.

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Section: Impacts Of Altered Emissions Of Fragrances By Leaves and Flomentioning

confidence: 99%

Impacts of Global Change on Mediterranean Forests and Their Services

Peñuelas

Sardans

Filella

et al. 2017

Forests

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122

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“…Cannabinoid and terpene production by plants is linked to both attraction of pollinators and responses to plant pathogens (Penuelas et al 2014; Andre et al 2016; Allen et al 2019; Lyu et al 2019). Cannabis plants are classified into 5 categories reflecting their THCA, CBDA, and CBGA expression.…”

Section: Introductionmentioning

confidence: 99%

Sequence and annotation of 42 cannabis genomes reveals extensive copy number variation in cannabinoid synthesis and pathogen resistance genes

McKernan

Helbert

Kane

et al. 2020

Preprint

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Cannabis is a diverse and polymorphic species. To better understand cannabinoid synthesis inheritance and its impact on pathogen resistance, we shotgun sequenced and assembled a Cannabis trio (sibling pair and their offspring) utilizing long read single molecule sequencing. This resulted in the most contiguous Cannabis sativa assemblies to date. These reference assemblies were further annotated with full-length male and female mRNA sequencing (Iso-Seq) to help inform isoform complexity, gene model predictions and identification of the Y chromosome. To further annotate the genetic diversity in the species, 40 male, female, and monoecious cannabis and hemp varietals were evaluated for copy number variation (CNV) and RNA expression. This identified multiple CNVs governing cannabinoid expression and 82 genes associated with resistance to Golovinomyces chicoracearum, the causal agent of powdery mildew in cannabis. Results indicated that breeding for plants with low tetrahydrocannabinolic acid (THCA) concentrations may result in deletion of pathogen resistance genes. Low THCA cultivars also have a polymorphism every 51 bases while dispensary grade high THCA cannabis exhibited a variant every 73 bases. A refined genetic map of the variation in cannabis can guide more stable and directed breeding efforts for desired chemotypes and pathogen-resistant cultivars. Sequence and annotation of 42 cannabis genomes reveals extensive copy number variation in cannabinoid synthesis and pathogen resistance genes

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“…In some cases, microbial pathogens alter the host plant's volatile profile to attract the pathogen's insect vector (Jim enez-Mart ınez et al, 2004;Mann et al, 2012). That microbial volatiles contribute to plant-pollinator interactions has been hypothesized (Raguso, 2004(Raguso, , 2008Pozo et al, 2009), and implicated (Golonka et al, 2014;Peñuelas et al, 2014;Schaeffer et al, 2017). However, whether volatiles produced by microbes, rather than their plant hosts, can alter ecological interactions remains poorly understood (but see , particularly for plant-pollinator interactions.…”

Section: Introductionmentioning

confidence: 99%

Nectar‐inhabiting microorganisms influence nectar volatile composition and attractiveness to a generalist pollinator

et al. 2017

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SummaryThe plant microbiome can influence plant phenotype in diverse ways, yet microbial contribution to plant volatile phenotype remains poorly understood. We examine the presence of fungi and bacteria in the nectar of a coflowering plant community, characterize the volatiles produced by common nectar microbes and examine their influence on pollinator preference.Nectar was sampled for the presence of nectar-inhabiting microbes. We characterized the headspace of four common fungi and bacteria in a nectar analog. We examined electrophysiological and behavioral responses of honey bees to microbial volatiles. Floral headspace samples collected in the field were surveyed for the presence of microbial volatiles.Microbes commonly inhabit floral nectar and the common species differ in volatile profiles. Honey bees detected most microbial volatiles tested and distinguished among solutions based on volatiles only. Floral headspace samples contained microbial-associated volatiles, with 2-ethyl-1-hexanol and 2-nonanone -both detected by bees -more often detected when fungi were abundant.Nectar-inhabiting microorganisms produce volatile compounds, which can differentially affect honey bee preference. The yeast Metschnikowia reukaufii produced distinctive compounds and was the most attractive of all microbes compared. The variable presence of microbes may provide volatile cues that influence plant-pollinator interactions.

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Removal of floral microbiota reduces floral terpene emissions

Cited by 62 publications

References 28 publications

Impacts of Global Change on Mediterranean Forests and Their Services

Impacts of Global Change on Mediterranean Forests and Their Services

Sequence and annotation of 42 cannabis genomes reveals extensive copy number variation in cannabinoid synthesis and pathogen resistance genes

Nectar‐inhabiting microorganisms influence nectar volatile composition and attractiveness to a generalist pollinator

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