scholarly journals Floral Scent Contributes to Interaction Specificity in Coevolving Plants and Their Insect Pollinators

2014 ◽  
Vol 40 (9) ◽  
pp. 955-965 ◽  
Author(s):  
Magne Friberg ◽  
Christopher Schwind ◽  
Lindsey C. Roark ◽  
Robert A. Raguso ◽  
John N. Thompson
Keyword(s):  
Floral Scent ◽  
Insect Pollinators

scholarly journals Nocturnal insect pollinator diversity and species richness in Ridge gourd, Luffa acutangula

2021 ◽  
Vol 13 (2) ◽  
pp. 463-469
Author(s):  
Archana H. Patil ◽  
Sandesh Jagdale
Keyword(s):  
Species Richness ◽  
Floral Scent ◽  
Visual Signals ◽  
Agricultural Crop ◽  
Agricultural Field ◽  
Single Family ◽  
Insect Pollinator ◽  
The Family ◽  
Insect Pollinators ◽  
Luffa Acutangula

Pollinators are rewarding for many wild and agricultural crop plants. The experiments were conducted in the agricultural field of Karad tehsil, Maharashtra, India. The present study concentrated on the diversity and species richness of nocturnal insect pollinators on Ridge gourd Luffa acutangula belonging to the family Cucurbitaceae. The Ridge gourd plant is monoecious with a bunch of male flowers and solitary female flower. Anthesis happened in late evening hours (17.00-19.00) and flowers remained for 13 to 14 hours. A total of 830 insect pollinators were sampled from June 2020 to November 2020. Altogether 17 species of insect pollinators belonging to 7 families under 6 orders were recorded. Among the total number of species, the Lepidoptera was the dominant order comprising  11 species belonging to the single family Crambidae followed by Blattodea comprising 2 species belonging to 2 families Ectobiidae and Blattidae. Hymenoptera comprised 1 species belonging to family Formicidae, followed by order Orthoptera comprising 1 species belonging to family Gryllidae, order Diptera  comprising  1 species belonging to the family Culicidae, followed by the order  Coleoptera  comprising 1  species belonging to the family Chrysomelidae. The Diaphnia hyalinata belonging to family Crambidae of  the order Lepidoptera was the most dominant species and was followed by Chabula acamasalis. The nocturnal species imparted pollination services to agricultural crops. The study also observed fundamental mechanisms of plant and nocturnal insect pollinator interaction as well as floral scent and visual signals. The study can be baseline data for conserving and managing the best pollinators for increasing the yield of Ridge gourd.

Averting robo-bees: why free-flying robotic bees are a bad idea

2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin
Keyword(s):  
Climate Change ◽  
Computer Simulation ◽  
Food Security ◽  
European Countries ◽  
Plant Interactions ◽  
Plant Insect Interactions ◽  
Native Habitat ◽  
Insect Pollinators ◽  
Insect Interactions

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.

scholarly journals The role of insect pollinators in avocado production: A global review

2021 ◽  
Author(s):  
Keira Dymond ◽  
Juan L. Celis‐Diez ◽  
Simon G. Potts ◽  
Brad G. Howlett ◽  
Bryony K. Willcox ◽  
...  
Keyword(s):  
Insect Pollinators

scholarly journals Floral Scent and Pollinators of Cypripedium calceolus L. at Different Latitudes

Diversity ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 5
Author(s):  
Herbert Braunschmid ◽  
Robin Guilhot ◽  
Stefan Dötterl
Keyword(s):  
Floral Scent ◽  
Latitudinal Gradients ◽  
Isolated Populations ◽  
Floral Scents ◽  
Selective Pressures ◽  
Octyl Acetate ◽  
Important Trait ◽  
Cypripedium Calceolus ◽  
Negative Frequency Dependent Selection ◽  
Plant Pollinator

Floral scent is an important trait in plant–pollinator interactions. It not only varies among plant species but also among populations within species. Such variability might be caused by various non–selective factors, or, as has been shown in some instances, might be the result of divergent selective pressures exerted by variable pollinator climates. Cypripedium calceolus is a Eurasian deceptive orchid pollinated mainly by bees, which spans wide altitudinal and latitudinal gradients in mainly quite isolated populations. In the present study, we investigated whether pollinators and floral scents vary among different latitudes. Floral scents of three C. calceolus populations in the Southern Alps were collected by dynamic headspace and analyzed by gas chromatography coupled to mass spectrometry (GC/MS). These data were completed by previously published scent data of the Northern Alps and Scandinavia. The scent characteristics were compared with information on pollinators recorded for present study or available in the literature. More than 80 scent compounds were overall recorded from plants of the three regions, mainly aliphatics, terpenoids, and aromatics. Seven compounds were found in all samples, and most samples were dominated by linalool and octyl acetate. Although scents differed among regions and populations, the main compounds were similar among regions. Andrena and Lasioglossum species were the main pollinators in all three regions, with Andrena being relatively more abundant than Lasioglossum in Scandinavia. We discuss natural selection mediated by pollinators and negative frequency–dependent selection as possible reasons for the identified variation of floral scent within and among populations and regions.

scholarly journals Genome-Wide Analysis and Characterization of the Aux/IAA Family Genes Related to Floral Scent Formation in Hedychium coronarium

2019 ◽  
Vol 20 (13) ◽  
pp. 3235 ◽  
Author(s):  
Yanguo Ke ◽  
Farhat Abbas ◽  
Yiwei Zhou ◽  
Rangcai Yu ◽  
Yuechong Yue ◽  
...  
Keyword(s):  
Gene Family ◽  
Developmental Stages ◽  
Floral Scent ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Regulatory Elements ◽  
Virus Induced Gene Silencing ◽  
Cut Flowers ◽  
Flower Opening ◽  
Hedychium Coronarium

Auxin plays a key role in different plant growth and development processes, including flower opening and development. The perception and signaling of auxin depend on the cooperative action of various components, among which auxin/indole-3-acetic acid (Aux/IAA) proteins play an imperative role. In a recent study, the entire Aux/IAA gene family was identified and comprehensively analyzed in Hedychium coronarium, a scented species used as an ornamental plant for cut flowers. Phylogenetic analysis showed that the Aux/IAA gene family in H. coronarium is slightly contracted compared to Arabidopsis, with low levels of non-canonical proteins. Sequence analysis of promoters showed numerous cis-regulatory elements related to various phytohormones. HcIAA genes showed distinct expression patterns in different tissues and flower developmental stages, and some HcIAA genes showed significant responses to auxin and ethylene, indicating that Aux/IAAs may play an important role in linking hormone signaling pathways. Based on the expression profiles, HcIAA2, HcIAA4, HcIAA6 and HcIAA12, were selected as candidate genes and HcIAA2 and HcIAA4 were screened for further characterization. Downregulation of HcIAA2 and HcIAA4 by virus-induced gene silencing in H. coronarium flowers modified the total volatile compound content, suggesting that HcIAA2 and HcIAA4 play important roles in H. coronarium floral scent formation. The results presented here will provide insights into the putative roles of HcIAA genes and will assist the elucidation of their precise roles during floral scent formation.

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