Articles tagged with Angiosperms
Land plants underwent major diversification in two dramatic bursts, driven by the development of seeds and flowering plants. The second burst was more dramatic, giving rise to intricate reproductive structures like those found in passionflowers.
In Ecuador's northwestern Andes, researchers from WSL and Aves y Conservation identified three new endemic orchid species, including Lepanthes microprosartima and Lepanthes caranqui. These rare species are threatened by habitat destruction and human activities, prompting conservation efforts to protect them.
Researchers used statistical models to study the co-evolutionary history of pierid butterflies and their host plants. They found that butterfly-plant relationships are resilient to changes in species composition but can destabilize over larger structural changes.
Alvarezsaur dinosaurs reduced in size from turkey-sized to chicken-sized around 95 million years ago when they transitioned to an ant-based diet. Their bodies also underwent significant changes, including modified claws and a shift from flesh-eating to termite consumption.
Researchers discovered a sophisticated deception mechanism in Aristolochia microstoma flowers, emitting foul scents similar to rotting arthropods. The deception attracts phorid flies for pollination, with the flies trapped inside before depositing pollen.
Fossil seed-bearing structures from China's Early Cretaceous period show a recurved cupule with two seeds, suggesting a link to extinct non-angiosperm plants. The discovery supports an earlier idea about the origin of flowering plants' distinctive outer seed covering.
Researchers at Cold Spring Harbor Laboratory found a gene responsible for reinstalling beneficial epigenetic modifications in plants. This process helps prevent the transmission of harmful genetic traits to offspring, allowing plants to evolve and diversify.
Researchers found that plants on the opposite side of a road received significantly less pollen than those on the same side, with effects varying by road size and bee species. The study suggests modifying existing pedestrian overpasses to include planter boxes could help facilitate pollinator movement.
A recent study reveals that the end-Cretaceous asteroid impact drastically restructured tropical forests, leading to a decline in plant diversity and the emergence of angiosperms. The findings suggest that the impact's long-term effects on tropical ecosystems were variable, depending on proximity to the crater and local conditions.
Asteroid impact led to 45% plant extinction and paved the way for modern tropical rainforests. Plant diversity took over 10 million years to recover after the impact, with flowering plants dominating ecosystems.
Researchers engineered a hawkmoth-pollinated Mimulus species by altering flower colour genes, showing strong preference for non-red colours. The study provides insights into the origin of new species through pollinator shift and suggests only a few simple genetic changes may be required.
A new study has solved Charles Darwin's long-standing puzzle about the origin of flowering plants, revealing they likely emerged around 100 million years ago. The research team used complex modeling and fossil data to estimate the age of flowering plants, contradicting earlier estimates that suggested a much more recent origin.
Researchers have produced the most comprehensive genome of Sapria himalayana, a major Rafflesiaceae lineage found in Southeast Asia. The analysis revealed an astonishing degree of gene loss and surprising amounts of gene theft from ancient and modern hosts, offering new insights into the evolution of flowering plants.
The study reveals increased extinction rates for conifers since the Cretaceous, attributing their decline to competition between flowering plants and conifers. The rise of angiosperms is seen as a major factor in this process, according to the authors.
Researchers found that reduced insect density influences plant composition and development, with dominant plant species becoming more prevalent. This can lead to mismatches between plant and animal species, causing adverse consequences for the ecosystem.
A new study on genetic pathways in the common liverwort has significant implications for crop manipulation by revealing a unique role of ACC as a biologically active molecule. This discovery sheds light on the evolution of plant hormone ethylene production and suggests potential avenues for manipulating its signaling pathways
A new study published in HortScience found that the commonly used rooting hormone IBA has no effect on cycad propagation, contrary to previous research. The study's findings highlight the need for further research on cycads and could improve conservation efforts in countries where commercial IBA products are difficult to obtain.
Warmer temperatures cause Arctic plants to compete for pollinators, with the most attractive species monopolizing services. Researchers found that Avens and Moss Campion experience altered flowering periods due to temperature changes, impacting competition and pollination success.
Researchers discovered a previously unrecorded seed dispersal mutualism between the dry-fruited Balanophora yakushimensis and its avian visitors. The birds obtain nutrients from larger fleshy bracts, while the plants benefit from seed dispersal.
A new study has provided the world's most detailed phylogenetic analysis of asterids, a group of flowering plants that include coffee, heather, and tomatoes. The research, conducted by the University of Bonn and international partners, sheds light on the evolutionary history of these species and their relationships.
Researchers discovered that yellow pond-lily (Nuphar lutea) exhibits a cyclic flower structure, with sepals forming two whorls and petals in a single whorl. This finding provides valuable information about the evolutionary history of angiosperms and their first flowers.
A recent plant study found that flowering plants in temperate zones are evolving twice as quickly as those in the tropics. This contradicts the long-held hypothesis that tropical regions have a higher rate of species formation.
A new plant species, Keraphyton mawsoniae, has been discovered in a 372-359 million year old Australian fossil. The fern-like plant shares similarities with modern ferns and horsetails, providing valuable information on plant evolution during the Devonian-Carboniferous period.
Researchers at the Donald Danforth Plant Science Center have uncovered an environmentally sensitive male sterile phenotype in flowering plants. The discovery of this genetic pathway's role in regulating pollen production could lead to improved seed production and crop yields.
Researchers found that bumblebee damage stimulates flower production in plants, accelerating their blooming. This phenomenon may help overcome challenges posed by climate change, which threatens to disrupt timing of mutualistic relationships between plants and insect pollinators.
A new study reveals that bumblebees bite leaves of flowerless plants to accelerate flowering, causing blooms to occur two weeks to a month earlier. This behavior suggests that bumblebees can manipulate plant flowering through deliberate damage, providing pollination systems with more plasticity and resilience to climate change.
Researchers at the University of Missouri discovered spiny pollen from a native wild dandelion species has evolved to attach to traveling bumblebees, making it easier for plants to reproduce. This adaptation allows for mutualism between the plant and pollinator, where both benefit from each other.
Researchers found that high-infection plant species in flowering strips increase pathogen intensity in bumble bee colonies. However, exposure to these strips also boosts bee reproduction, highlighting the complex relationship between food resources and disease in pollinators.
Researchers discovered four new beetle species in 99 million-year-old amber fossils from Myanmar, which helped flowering plants spread and benefited the beetles. The beetles' adaptability allowed them to form a mutually beneficial symbiosis with the emerging angiosperms.
A study by the German Centre for Integrative Biodiversity Research found that flowering plants are better pollinated in urban areas than in rural regions. Bees, particularly bumblebees, played a crucial role in this process. The researchers recommend considering the needs of bees when planning green spaces in both cities and countryside.
The water lily genome expands the picture of the early evolution of flowering plants, shedding light on key traits like flower development and attractive floral scent. Researchers used high-throughput sequencing technology to analyze the genome and transcriptome of Nymphaea colorata, identifying over 31 thousand protein-coding genes.
A new species of wasp-mimicking fly from South Korea has been discovered, with members twice the size of common house flies. The ancient insect, named after PSY's 'Gangnam Style', had distinct yellowjacket-like patterns on its abdomen.
A new study published in Nature reports the genome sequence of the blue-petal water lily, finding evidence of genetic innovations that may have led to the evolution of floral scent and other traits in early-diverged flowering plants. The research sheds light on the early evolution of all angiosperms.
New research reveals that Australia's oldest flowering plants are 126 million years old and resemble modern magnolias, buttercups, and laurels. Climate change may have prevented their expansion into Australasia due to cold temperatures.
Researchers created the most comprehensive evolutionary tree for green plants using genetic data from 1,147 species. The study found that the transition from aquatic to terrestrial plants was a key event in driving genetic diversity and plant evolution.
A recent study published in Nature reveals a new framework for understanding the evolution of green plants over 1 billion years. The research, led by an international consortium of scientists, generated gene sequences for over 1100 plant species and provides insight into how plants evolved to produce useful chemicals.
The One Thousand Plant Transcriptomes Initiative reveals the complex history of land plants and green algae, including previously unknown duplications and expansions of genes. The data shed light on plant evolution, relationships between lineages, and potential avenues for evolutionary development.
The One Thousand Plant Transcriptomes Initiative reveals the timing of whole genome duplications and the origins of key gene families contributing to fundamental genetic innovations in green plants. The study provides a framework for understanding plant diversity and evolutionary innovations.
A dated evolutionary tree for butterflies and moths reveals they diversified 300 million years ago, earlier than previously thought. The study supports the hypothesis that Lepidoptera coevolved with flowering plants but not with echolocating bats.
A new study reveals that moths evolved 'ears' millions of years before the emergence of bats, challenging the long-held hypothesis that bats drove this adaptation. Fossil analysis and genetic data confirm that flowering plants played a key role in shaping moth diversity.
Research by University of Kansas plant biologists reveals that abandoning one pollinator for another compromises a flower's long-term survival. The study found that hummingbird-pollinated species are less likely to form new species, while insect-pollinated species tend to be more successful in speciating and resisting extinction.
A study by University of Würzburg scientists found that climate change accelerates the flowering of pasque flowers, outpacing the emergence of solitary bees, which rely on these plants for food. This disruption can lead to reduced seed production and reproductive success in plants, while negatively affecting bee populations.
Researchers developed a new method to monitor neonicotinoids in living plants, allowing for spatial and temporal tracking of the insecticides. This probe could help pinpoint where and when bees are exposed to pesticides, informing efforts to protect pollinator populations.
Researchers found that early snowmelt causes Corydalis ambigua flowers to bloom before bumblebee emergence, leading to a mismatch in pollination. This phenological disruption can significantly lower seed-set rates due to inadequate pollination.
Scientists discovered a suite of microbe-responsive gene families that date back to early land plant evolution in distantly related plants. These genes are often associated with stress-response in flowering plants and provide increased protection against biotic stresses.
A new study suggests that non-native plants may thrive over native plants as temperatures rise, potentially altering local landscapes. Native species showed no shift in flowering times despite warming temperatures.
A Rutgers study found that striped maple trees can switch sex from year to year, with 54% of trees changing sexes over a four-year period. Female trees are more likely to die, which could lead to reduced populations and a decrease in seed production.
A new study analyzed fossil mammal communities and found that the rise of flowering plants, evolved teeth, and dinosaur extinction drove changes in mammalian diversity. Ecological richness was primarily driven by vegetation type, with modern mammals focusing on plant-based diets.
A study analyzes mammalian communities across 98 biomes, finding that vegetation type strongly influences ecological structure. The ecospace of extinct communities overlapped with extant ones, but lacked frugivores and granivores.
Researchers discovered fossil evidence of early taro cultivation in southern Polynesia, suggesting a history of taro production on the islands. The study indicates that fire was used for clearing forest cover during early cultivation, followed by a decrease in fire and an increase in short-lived plants as production intensified.
A Jurassic fossil find reveals that insects began serving as pollinators before the emergence of flowering plants. The ancient fly's proboscis was used to access sugary secretions in ancient gymnosperms, laying the foundation for pollination mutualism.
Researchers at Julius-Maximilians-Universität Würzburg reconstructed the evolutionary history of genes controlling leaf pore movement in flowering plants. They found that most genes belong to old families present in all plant groups, including green algae, suggesting they developed before land colonization.
A team of researchers studied the evolution of plants and fungi over 1 billion years to find that their coexistence played a key role in shaping their biodiversities. The study found that fungal colonization of land was associated with the emergence of terrestrial green algae, which preceded the origin of land plants.
Researchers have discovered a mechanism that enables flowering plants to 'remember' changes in their environment, triggering flowering in response to stress or seasonal changes. The PRC2 complex, containing the VRN2 protein, detects environmental signals and becomes stable under challenging conditions.
A study published in Ecology Letters found that edge populations of plants, such as yellow rattle, are better suited to surviving climate change. These populations have adapted to high-elevation summers by flowering earlier, allowing them to thrive in areas where lower elevation populations fail.
A new study in eLife describes a 50-million-year-old fossil flower species that defies widely accepted theories of plant evolution. The discovery of Nanjinganthus dendrostyla sheds light on the origins of angiosperms, potentially indicating an earlier emergence than previously thought.
The California Academy of Sciences has added 229 new plant and animal species to the family tree, including 120 wasps, 34 sea slugs, and seven flowering plants. These discoveries were made over five continents and three oceans, highlighting the vast and dynamic planet's unexplored places.
Researchers have discovered the earliest definitive fossil evidence of insect-pollination in ancient cycads, dated to 99 million years ago. The discovery of an amber-trapped boganiid beetle shows special adaptations for transporting pollen, indicating a probable ancient origin of beetle pollination.
A new mid-Cretaceous boganiid beetle with specialized pollen feeding adaptations has been discovered, suggesting an ancient origin for beetle pollination of cycads. The fossil provides early definitive evidence for cycad-insect interactions, illuminating the history of complex entomophily in cycads.
Plant physiologists from Lomonosov Moscow State University discovered that hydrogen peroxide is essential for conifer pollen germination. The protein NADPH-oxidase regulates the process, which involves a gradient of hydrogen peroxide in the pollen tube to support growth and fertilization.