Abstract The assembly of the seed microbiota involves some early microbial colonizers that are transmitted from maternal plant through vascular system, while other microbes enter stigma. Thus, consists not only recruited tissues, but also flower. Flowers known to be a hub for transmission between plants and insects. This floral-insect exchange opens possibility insect-transmitted bacteria colonize ovule and, subsequently, pass then into next generation. In this study, we evaluated...

Assessing the various anthropogenic pressures imposed on honeybees requires characterizing patterns and drivers of natural mortality. Using automated lifelong individual monitoring devices, we monitored worker bees in different geographical, seasonal colony contexts creating a broad range hive conditions. We measured their life-history traits notably assessed whether lifespan is influenced by pre-foraging flight experience. Our results show that age at first onset foraging are critical...

Exposure to multiple stress factors is believed contribute honey bee colony decline. However, little known about how co-exposure can alter the survival and behaviour of free-living bees in conditions. We therefore studied potential interaction between a neonicotinoid pesticide, thiamethoxam, highly prevalent pathogen, Deformed wing virus (DWV). For this purpose, tagged were exposed DWV by feeding or injection, and/or field-relevant doses then left colonies equipped with optical counters...

Abstract DNA barcodes could be a useful tool for plant conservation. Of particular importance is the ability to identify unknown material, such as from customs seizures of illegally collected specimens. Mexican cacti are an example threatened group, under pressure because wild collection xeriscaping trade and private collectors. also provide taxonomically geographically coherent group with which test barcodes. Here, we sample matK barcode 528 species Cactaceae including approximately 75%...

• Premise of the study: Slow‐growing understory cycads invest heavily in defenses to protect few leaves they produce annually. The Neotropical cycad Zamia stevensonii has chemical and mechanical barriers against insect herbivores. Mechanical barriers, such as leaf toughness, can be established only after expanded. Therefore, may important during expansion. How changes traits affect feeding activity specialist insects is unknown. We investigated incidence herbivores on Z. first year flush....

Abstract Several Convolvulaceae species harbor heritable fungal endophytes from which alkaloids are translocated to reproductive tissues of the plant host. Evidence for distribution and ecological role these alkaloids, however, is lacking or incomplete many host growth forms. Here we report on identity quantities present in leaves seeds arborescent morning glory, Ipomoea murucoides (Convolvulaceae). Young folded leaf samples taken wild, harbored mycelium one two taxa wrapped around leaves’...

Though there is overlap, plant responses to caterpillar herbivory show distinct variations from mechanical wounding. In particular, effectors in oral secretions modify wound-associated responses. Previous studies have focused on transcriptional and protein abundance differences response herbivory. This study investigated Spodoptera exigua caterpillar-specific post-translational modification of Arabidopsis thaliana soluble leaf proteins by liquid chromatography/electrospray ionization/mass...

Honeybee colonies are increasingly exposed to environmental stress factors, which can lead their decline or failure. However, there major gaps in stressor risk assessment due the difficulty of assessing honeybee colony state and detecting abnormal events. Since factors usually induce a demographic disturbance (e.g. loss foragers, early transition from nurse forager state), we suggest that disturbances could be revealed indirectly by measuring age- task-related physiological bees, referred as...

ORIGINAL RESEARCH article Front. Plant Sci., 06 May 2013Sec. Pathogen Interactions Volume 4 - 2013 | https://doi.org/10.3389/fpls.2013.00113

The concept of limiting similarity predicts that closely related taxa are less likely to co-occur than expected by chance. degree which the phylogenetic relatedness in plant communities is accord with has been little tested at scale where consequences adaptive differentiation during speciation should be most evident: neighboring, congeneric plants within a community. To quantify species co-occurrence patterns relation environment, we sampled sedge species, their rooting level relative water...

Background: Pollen, as all other plant tissues, harbors different microorganisms. As honey bees (Apis mellifera) collect and pack pollen they add regurgitated nectar to moisten glue the grains, possibly changing microbial composition. Hypothesis: We hypothesize that while packing into their corbiculae, change microbiota. Studied species: Brassica napus L., Apis mellifera L. Study site dates: Avignon, France, 2018. Methods: In this study, we compared microbiota of clean (Brassicaceae) with...

Adult beetles in the small subfamily Aulacoscelidinae (superfamily Chrysomeloidea) are known to feed on foliage and juices of New World cycads (Order Cycadales; family Zamiaceae), but habits larvae have long remained a mystery. We provide first direct evidence that develop within megagametophyte Mesoamerican cycad, Dioon merolae (Zamiaceae). Phylogenetic analyses based partial DNA sequences from 3 genes recover cycad seed‐feeding larva proposed belong Aulacoscelidinae. These observations...

Automatic monitoring devices placed at the entrances of honey bee hives have facilitated detection various sublethal effects related to pesticide exposure, such as homing failure and reduced flight activity. These further demonstrated that different neurotoxic molecules produce similar impacts on The these was conducted a posteriori, following recording activity data. This study introduces method using an artificial intelligence model, specifically recurrent neural network, detect pesticides...

ABSTRACT The assembly of the seed microbiota involves some early microbial colonizers that are transmitted from maternal plant through vascular system, while other microbes enter stigma. Thus, consists not only recruited tissues plant, but also flower. Flowers known to be a hub for transmission between plants and insects. This floral-insect exchange opens possibility insect-transmitted bacteria colonize ovule subsequently seed, pass then into next generation. In this study, we evaluated...

Abstract Pollen, as all other plant tissues, harbors different microorganisms. As honey bees ( Apis mellifera ) collect and pack pollen they add regurgitated nectar to moisten glue the grains, possibly changing microbial composition. In this study, we compared microbiota of clean Brassica napus with that bee-worked corbicular pollen. We found by working pollen, increase bacterial diversity adding bee symbionts such Bombella, Frischella, Gilliamella Snodgrassella , pathogens Spiroplasma...

Dioon (Zamiaceae) is an endangered North American cycad genus of evolutionary and ornamental value. We designed validated a set microsatellite markers from D. edule that can be used for population-level conservation studies, transferred successfully to angustifolium, spinulosum, holmgrenii.We tested 50 primers 80 candidate loci in the OneKP transcriptome. Genotypes 21 20 individuals revealed up 14 alleles per locus observed heterozygosity 0.15 0.92; one was monomorphic. Seven those were...

<title>Abstract</title> Urbanization is considered to be a major threat biodiversity, habitat destruction and fragmentation hamper the establishment dispersal of many species. Nevertheless, some species are resilient urbanization. As important pollinators, wild bees provide an ecosystem service natural, agricultural urban ecosystems. It not clear what degree environment can refuge for bees. We assessed changes in abundance, richness, composition bee community along urbanization gradient...

<title>Abstract</title> Many Convolvulaceae species harbor heritable fungal endophytes from which alkaloids are translocated to reproductive tissues of the plant host. Evidence for distribution and ecological role these alkaloids, however, is lacking or incomplete many host growth forms. Here we report on quantities present in leaves seeds arborescent morning glory, <italic>Ipomoea murucoides</italic> (Convolvulaceae). Young leaf samples taken wild harbored one two taxa. Seeds had higher...