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26 results for “self-compatibility”
Data from: Stochastic character mapping of state-dependent diversification reveals the tempo of evolutionary decline in self-compatible Onagraceae lineages
A major goal of evolutionary biology is to identify key evolutionary transitions that correspond with shifts in speciation and extinction rates. Stochastic character mapping has become the primary method used to infer the timing, nature, and number of character state transitions along the branches of a phylogeny. The method is widely employed for standard substitution models of character evolution. However, current approaches cannot be used for models that specifically test the association of character state transitions with shifts in diversification rates such as state-dependent speciation and extinction (SSE) models. Here we introduce a new stochastic character mapping algorithm that overcomes these limitations, and apply it to study mating system evolution over a time-calibrated phylogeny of the plant family Onagraceae. Utilizing a hidden state SSE model we tested the association of the loss of self-incompatibility with shifts in diversification rates. Confirming long standing theory, we found that self-compatible lineages have higher extinction rates and lower net diversification rates compared to self-incompatible lineages. Furthermore, these results provide empirical evidence for the "senescing" diversification rates predicted in highly selfing lineages: our mapped character histories show that the loss of self-incompatibility is followed by a short-term spike in speciation rates, which declines after a time lag of several million years resulting in negative net diversification. Lineages that have long been self-compatible such as Fuchsia and Clarkia are in a previously unrecognized and ongoing evolutionary decline. Our results demonstrate that stochastic character mapping of SSE models is a powerful tool for examining the timing and nature of both character state transitions and shifts in diversification rates over the phylogeny.
Database from: Managed honey bees decrease pollination limitation in self-compatible but not in self-incompatible crops
<p><span>Modern agriculture is becoming increasingly pollinator-dependent. However, the global stock of domesticated honey bees is growing at a slower rate than its demand while wild bees are declining worldwide. This uneven scenario of high pollinator demand and low pollinator availability can translate into increasing pollination limitation, reducing the yield of pollinator-dependent crops. However, overall assessments of crop pollination limitation and the factors determining its magnitude are missing.</span></p> <p><span><span>W</span><span>e assembled the first global database of pollination limitation in pollinator-dependent crops, encompassing </span><span>107 metadata comparing the quantity/quality of fruits/seeds produced by pollen supplemented vs naturally pollinated flowers. This database, based on 52 published studies, cover 30 crops in 52 crop systems. </span></span><span>We conducted a meta-analysis comparing crop yield in pollen-supplemented vs. open-pollinated flowers. We assessed the overall magnitude of pollination limitation and whether this magnitude was influenced by (a) the presence/absence of managed honey bees, (b) crop compatibility system (i.e., self-compatible/self-incompatible), and (c) the interaction between these two factors. </span></p>
Data from: Autofertility and self-compatibility moderately benefit island colonization of plants
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Data from: Stochastic character mapping of state-dependent diversification reveals the tempo of evolutionary decline in self-compatible Onagraceae lineages
Open the record for dataset details and reuse information.
Database from: Managed honey bees decrease pollination limitation in self-compatible but not in self-incompatible crops
Open the record for dataset details and reuse information.
Dissection of the style’s response to pollination using transcriptome profiling in self-compatible (Solanum pimpinellifolium) and self-incompatible (Solanum chilense) tomato species
GEO Series GSE67654. Solanum pimpinellifolium; Solanum chilense. 12 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.