Articles tagged with Angiosperms
A unique plant fossil cache in New Mexico reveals angiosperms flourished 10 million years before dinosaurs' demise, contradicting the view that they only took over after their extinction. The discovery showcases a thriving forest dominated by flowering plants with large fruits, challenging the traditional narrative.
A recent study maps the evolutionary history of hawkmoths, revealing a co-evolutionary arms race between these insects and flowers. The relationship leads to a cycle of nectar spur lengthening and proboscis evolution, with some species developing long tongues to feed on specific orchids.
Researchers have discovered that plants utilize two forms of cyclic adenosine monophosphate (cAMP) to regulate normal cellular functions and respond to stress, while maintaining cross-talk between the pathways. This redundancy enables plants to adapt more robustly to a wider range of environmental factors.
A new study reveals that biochar nanoparticles directly enter plant tissues and enhance flowering by reshaping carbon allocation and regulating key genes. This discovery provides a new explanation for how biochar improves crop performance beyond its effects on soil fertility.
Salk Institute scientists created a high-resolution atlas showing how droughts affect plant cells. They identified a gene, Ferric Reduction Oxidase 6 (FRO6), that could be targeted to create more resilient crops. FRO6 expression in mesophyll cells partially maintained leaf growth under drought stress.
Researchers shed light on moths & butterflies' evolution, conservation needs, and diverse feeding habits. Discoveries suggest that these insects obtained plant-digesting abilities from fungi, while mandibled moths were once more diverse but largely extinct.
A study of over 8,000 tropical flowers found that their blooming periods have shifted by an average of two days per decade, with some species flowering up to 17 days earlier or later than they used to. This change could have significant ecological impacts on pollinators and herbivores.
The Florida Museum of Natural History has published 'The Butterflies of California' after five decades of work by brothers Thomas and John Emmel. The book, which clocks in at 854 pages, explores the diversity and life histories of butterflies in western North America.
Researchers collect snapdragon flowers and leaves to study their genetic diversity, revealing how color genes keep two varieties distinct. In hybrid zones, magenta and yellow snapdragons blend, but bees prefer one over the other, reducing fitness and offspring.
Researchers at RIKEN Center for Sustainable Resource Science identified ancient protein SCORE to help plants defend against various pathogens. By engineering synthetic SCORE variants, plants can be made resistant to multiple pathogen types.
A long-term field study found that wild bumble bees strategically target flowers to balance their diet, adjusting their consumption of protein, fat, and carbs based on tongue length and seasonal flower availability. This nuanced approach allows them to thrive together and maintain strong colonies.
Researchers create first genetic atlas to span entire Arabidopsis life cycle, capturing gene expression patterns of 400,000 cells in multiple developmental stages. The atlas provides comprehensive insights into plant biology, enabling future studies on different cell types and developmental stages.
Half of Brazil's high-potential areas for discovering new angiosperm species are located within protected indigenous lands. The study highlights the need for conservation priorities in these areas.
A new study published in Marine Ecology Progress Series reveals that seagrass ecosystems along Florida's Nature Coast have remained relatively healthy over the last several thousand years. The research, conducted by conservation paleobiologists, used fossilized mollusk shells to infer ecosystem health and found that these communities a...
A new plant tissue has been discovered in plants essential for seed formation, which can increase crop yields. The 'Kasahara Gateway' structure functions as a gateway and is regulated by a gene called AtBG_ppap.
Researchers found that flower constancy is an optimal strategy balancing cognitive and travel costs, not just a memory constraint. Bees decrease constancy when flowers have similar colors or are clustered, but maintain high constancy in mixed environments.
A new study suggests that extreme weather events are crucial to understanding phenological responses in plants and insects. The research found that disruptions to the delicate relationships between certain species, such as the yucca plant and yucca moth, can have significant consequences for survival.
New research from Washington University in St. Louis found that pawpaw patches reduce herbaceous plant species diversity and total understory community size, creating a habitat where the rules of competition are more random. The presence of pawpaws also makes it challenging for land managers to encourage the growth of understory species.
A recent UC Riverside study found that raking dead grass can boost California's native wildflower diversity, reducing fire danger and increasing plant community changes. The simple, low-cost method of removing invasive grass layers allows native seeds to germinate and grow.
A new study finds that disease-causing bacteria can infect a wide range of plant species, including non-flowering plants, using a common set of pathogenicity factors. The research suggests that the toxin syringomycin interferes with cell membranes across diverse plant species.
A new study found that well-managed electric rights-of-way can increase the diversity and abundance of pollinating insects, as well as flowering plants. By mimicking natural disturbances like wildfires, utility crews can create successional habitats that support rare plant communities.
Researchers found that bacteria can anticipate the arrival of new seasons by using their internal 24-hour clocks. Samples exposed to short days showed significantly higher survival rates when plunged into ice, indicating that photoperiodism is critical in preparing bacteria for longer-term environmental changes.
A University of Arizona study has found a consistent pattern: Animals with higher body temperatures are more likely to evolve into herbivores. This relationship holds true across major land vertebrate groups, and is linked to the unique digestive challenges posed by plant-based diets.
Researchers have discovered a novel type of wood that is highly efficient at carbon storage, thanks to its unique macrofibril structure. This discovery may lead to the development of new plantation forests capable of capturing large quantities of carbon dioxide.
A new study by Salk scientists reveals a key gene that enhances plants' zinc tolerance, allowing them to thrive in toxic conditions. The discovery enables the development of crops more resilient to soil contamination, a major goal of Salk's Harnessing Plants Initiative.
Non-flowering bryophytes, including mosses, have sophisticated immune receptor repertoires that can be transferred between flowering and non-flowering plants. This discovery offers a new source of resistance genes against pathogens for major crops facing climate change threats.
The study found that programmed cell death is a prerequisite for sperm release in liverworts. MpMLO1 protein increases cytoplasmic Ca2+ levels and induces PCD, allowing sperm to enter the antheridial pore for fertilization.
Researchers discovered that ferns and flowering plants independently evolved nectaries around the same time to defend against herbivores. Ferns likely recruited ant defenders secondarily, tapping into pre-existing relationships as they transitioned from forest floor to canopy.
Researchers at Trinity College Dublin discovered that over 10,000 species have been described in just 83 big genera since 2000, with roughly one in four flowering plant species belonging to these groups. Understanding the success of these large genera may help predict their response to climate change and inform conservation efforts.
An international team has developed the largest tree of life for flowering plants, comprising 9,500 species and 1.8 billion genetic codes. The study sheds light on the sudden appearance and diversification of angiosperms, revealing rapid evolution and new avenues for research in plant classification, identification, and conservation.
A recent study published in Nature reveals a vast DNA tree of life for flowering plants, providing insights into their evolutionary history. The analysis of over 9,500 plant species reveals the rapid development of diversity in ancient times, with key findings supporting the plastid-based phylogenetic classification of angiosperms.
A global team of researchers, led by the Royal Botanic Gardens, Kew, sequenced DNA from over 9,500 species, creating a detailed tree of life for flowering plants. The study sheds light on plant evolution, conservation strategies and sustainable agriculture applications.
Scientists discovered a 201-million-year-old fossilized plant that exhibited net-like veining, similar to modern flowering plants. The ancient plant, Furcula granulifer, is part of an extinct group of seed ferns that failed to evolve efficient leaves.
A new study found that about half of Cerrado plant species will experience a net range loss due to climate change by 2040, leading to less plant diversity in lowland areas. The research suggests that the fate of plant species depends on their geographical range, with mountain plants having nowhere to go.
Scientists explored desiccation tolerance in mosses, tracing 450 million years of plant evolution. They found closely related species use similar pathways to coordinate dehydration but differ in rehydration management.
A University of Washington team discovered that nitrate radicals in the air degrade scent chemicals released by wildflowers, making them undetectable to nighttime pollinators. The researchers found that pollution likely has worldwide impacts on pollination, with areas including western North America and Europe most affected.
A team of researchers from Nara Institute of Science and Technology discovered a phytohormone-mediated switch controlling autophagy, leading to terminal cell differentiation for petal abscission. They found that jasmonic acid promotes petal abscission by activating autophagy at the base of petals.
A new genomic study sheds light on the evolutionary innovation behind carnivorous Asian pitcher plants, suggesting that duplicated genomes may have enabled specialized carnivory and separate-sexed plants.
A new study found that flowering plants suffered some species loss but became the dominant type of plant after the mass extinction event. They adapted through various seed-dispersal and pollination mechanisms, genomic duplication, and innovative photosynthesis methods.
Researchers discovered that female gametes in flowering plants can still attract pollen tubes and produce seeds even without synergid cells. The central cell produces new types of pollen tube attractants, SALs, which are essential for fertilization recovery.
Scientists have deciphered the Arctic flora's evolution over time, discovering its roots date back to the Early Late Miocene. The study reveals a complex dispersal corridor between the Arctic and western North America, with both immigration and in situ speciation contributing to biodiversity.
A new study reveals that ants followed flowering plants as they left ancient forests, driving the evolution of thousands of ant species. The researchers used fossils, DNA, and habitat data to show how plants' spread influenced ants' habitats and behavior.
A new Japanese 'ladies tresses' orchid, Spiranthes hachijoensis, has been found in private gardens and on balconies. The discovery suggests that other new species may be hidden in common environments, eliminating the need for remote tropical rainforest expeditions.
A fossil plant from California has shed light on the evolution of flowering plants, pushing back their origins by 80 million years. The discovery indicates that structurally complex rainforests may have existed as early as the Cretaceous period.
Researchers discovered that non-vascular bryophytes like Marchantia polymorpha adapt their architecture in response to shade, using phytochromes to regulate branching. The study found a liverwort-specific microRNA and SPL gene controlling meristem function, differing from vascular plants.
The white egret orchid's unique petal shape supports the hawkmoth pollinator, leading to higher healthy seed production. The research found that intact plants produced more seeds than those with the fringed petal removed.
New research finds that plants with shorter-lived flowers produce more fruits due to reduced microbial growth. Microbes on flowers can negatively impact plant yields.
Researchers at the University of Maryland identified AGL62 as the trigger for fruit and seed development in flowering plants. The study showed that AGL62 stimulates auxin production, which regulates endosperm growth and fruit enlargement.
Researchers found that trees in tropical forests produce significantly more seeds than those in boreal regions, challenging the assumption that larger seeds mean fewer offspring. The studies also reveal that seed production is not constrained by seed size and provide new guidance for forest management and replanting.
University of Ottawa scientists, collaborating with Yale researchers, have discovered the hidden influence of a single variation between histone H3.1 and H3.3 proteins. This finding could expand our understanding of DNA damage repair and its role in diseases like cancers and sponastrine dysplasia.
Researchers have discovered a new plant species, Castela senticosa, in the Martín García mountain range of the Dominican Republic. The species was found to be rare and endangered due to its limited geographic distribution.
Researchers developed a cost-effective protocol for plant sample preparation and visualization, eliminating the need for stains and dyes. The new method harnesses the natural autofluorescence of tissues in plants, allowing for rapid visualization of plant anatomy across diverse taxa.
A study by Okayama University researchers validates the 'pre-emptive selfing hypothesis,' proposing self-pollination as a survival strategy for coexistence. The findings show that evolution of prior selfing favors the propagation of inferior competitive plant species, leading to long-term coexistence.
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.