Articles tagged with Plant Evolution
A recent study reveals that warming and cooling of the Pacific Ocean, driven by solar radiation changes, impacted moisture availability in Africa. This climate process may have shaped the distribution of plant and animal species, creating favorable conditions for resource-rich regions where modern humans emerged.
The study identifies Knl1 as a constitutive component of the central kinetochore protein in plants, playing an essential role in chromosomal congregation and segregation during mitosis. Deficiencies in Knl1 are linked to defective kernel development.
Researchers found common foxgloves in the Americas have evolved longer flower tubes to accommodate hummingbird pollinators, outperforming native bumblebee-pollinated populations. This rapid evolution has occurred over 85 generations, indicating a significant adaptation to their new environment.
A new probe set has been developed to reconstruct the 470-million-year history of flagellate land plants, including ferns and lycophytes. The probes target variable loci in nuclear DNA, providing a unique perspective on plant evolution and resolving deep phylogenetic relationships.
Researchers have confirmed Noeggerathiales had fern-like spore propagation and seed plant vascular tissue, revealing a closer relationship to seed plants than previously thought. The study also shows that the ancestral lineage of seed plants diversified during the Devonian-Carboniferous-Permian periods.
A fossil plant with complete anatomical preservation from a 298-million-year-old ash deposit has enabled evolutionary classification of the Noeggerathiales order. Paratingia wuhaia, a small woody tree, belongs to the progymnosperm lineage and produces spores.
A new study has uncovered a pivotal moment in the evolution of seed-bearing plants, revealing they outcompeted other fern groups 300 million years ago. The fossils found in China have provided crucial evidence that Noeggerathiales, an ancient plant lineage, were more closely related to seed plants than previously thought.
A new study confirms ecological interactions as a driver of evolution over long periods, highlighting the importance of adapting to host plant changes. Butterflies that consume poisonous plants exhibit genetic adaptations that enable them to detoxify toxins and recognize their preferred hosts.
Researchers have identified a new protein that regulates fluidity in moss cell membranes, allowing them to withstand cold temperatures. This discovery shows convergence in plant evolution, with mosses and flowering plants using similar mechanisms to protect themselves from cold and pathogens.
A paleobotanist is leading a team to Antarctica to collect and analyze fossilized flowering plants, providing insight into the early evolution of modern plants. The project aims to fill gaps in the fossil record and better understand the role of Antarctica in plant diversification.
A plant species, Fritillaria delavayi, has evolved to become better camouflaged in areas with high human harvesting, increasing its survival chances. Human activity is found to be driving the evolution of camouflage in this species.
Researchers found that as microbes adapt to new hosts, they become less beneficial to hosts of other genotypes. The study suggests that there may not be a single universally healthy microbiome, and transplanted microbes need time to adjust before providing benefits.
Researchers used leaf reflectance spectra to illuminate the evolution of seed plants over 350 million years, revealing phylogenetic diversity and constraints on spectral variation. The study's findings have significant implications for monitoring plant biodiversity and ecosystem function.
A new plant species, Cardamine insueta, has emerged in the Urnerboden region of the Swiss Alps, 150 years after land conversion from forest to grassland. The species inherited traits from its parent plants, allowing it to grow in a distinct environmental niche.
Researchers found that genome duplications contribute to the morphological variation and biological diversity in plants. The study analyzed 4,000 species of Brassicaceae family and revealed no key innovation in morphological characteristics over time.
A team of researchers has discovered a previously unknown relative of the ancient enzyme rubisco, which is central to photosynthesis and carbon fixation. The new form, called form I-prime rubisco, provides clues about how this enzyme evolved over billions of years.
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 study sequenced the genome of Gardenia jasminoides and discovered how it produces crocin, a compound with medicinal properties. The research highlights an evolutionary process called tandem gene duplication that enables plants to expand their genetic toolkit and create new capabilities.
Researchers discovered that catnip revived the mint family tradition by evolving a new iridoid production line, producing nepetalactone with unique chemical properties.
A team of researchers discovered the genome sequence of catmint, revealing unique enzymes responsible for producing the cat attractant nepetalactone. The ability to produce iridoids had been lost in ancestors of catmint, but was later re-evolved in this species.
Researchers at the University of Kansas have discovered that the mahogany family dates back to the last hurrah of the dinosaurs, with a fossil found in Canada dating back to the Campanian stage of the Late Cretaceous. The discovery pushes back the known origin of mahogany by 15-20 million years.
Researchers found that Stomaphis aphid diversification was primarily driven by host plant shifts, rather than associated ant species. The study revealed a surprising finding that the aphids had not shifted between closely related plant species, but instead between very distantly related host plant taxa.
A recent study found that rates of climatic-niche evolution are similarly slow in both plants and animals, with only slight variations across different clades. This research highlights the importance of understanding climate change impacts on species distribution and evolution.
A recent study by botanist Cody Coyotee Howard uncovered two ranges of optimum bulb diameter driven by natural selection, with larger bulbs thriving in warmer climates. The research has significant implications for understanding plant evolution, agriculture, and horticulture.
A recent study published in Journal of Systematics and Evolution suggests that global warming could negatively impact the processes that generate biodiversity. The research focuses on the evolutionary success of Carex, a genus with over 2000 species, which is favored by cold climates during the past 10 million years.
Ants cultivate plants in full sun to obtain more floral food, but this condition also leads to increased plant damage and fewer plant numbers. In contrast, shade-cultivated plants produce less food for the ants but receive more nitrogen fertilizer input.
Local activism can change targets when community activists reach their goals, with success galvanizing activists and inspiring further action. Failure, however, does not lead to decreased mobilization, but rather sparks new protests in other industries.
Researchers discovered that the tiny apex structure in plant leaves controls water drainage, allowing for fast absorption of excess water. This adaptation enables understory plants to survive high precipitation and humidity conditions in rainforests.
A team of scientists has developed a method to rapidly evolve endogenous genes in plants, enabling accelerated breeding via molecular design. The technology, called STEME, uses CRISPR-like enzymes to introduce precise mutations into plant genes, leading to improved agronomic traits.
Recent fossil discoveries revealed three evolutionary patterns on the Tibetan Plateau: local endemism, out-of-Tibet dispersal, and intercontinental exchange. These patterns reflect the biological responses to tectonic uplift and its impact on biota globally.
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.
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.
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 comprehensive review of plant reproductive systems provides new perspectives on heterostyly, highlighting recent advances and unresolved questions. The study explores the ecology, evolution, genetics, and genomics of plant reproductive strategies, shedding light on their role in ecological interactions and evolutionary change.
A study of over 89,000 scientific papers reveals that plant partners do not accelerate the rise of new ant species but rather may hinder it. The researchers suggest that ants' fates become linked to their plant partners' fate in mutually beneficial relationships.
Researchers at the University of Bristol discovered the secrets of shoot evolution, revealing a switch that enabled plants to delay reproduction and grow shoots, leaves, and buds around 450 million years ago. This finding has significant implications for understanding plant shape regulation and could inform efforts to engineer crops.
Researchers found similar structures in rare bacteria and modern cyanobacteria, suggesting the process is older than thought. This challenges the traditional view that oxygenic photosynthesis evolved from anoxygenic photosynthesis a billion years ago.
A KAUST-led team has developed a new platform for speeding up and controlling the evolution of proteins inside living plants. This allows plant breeders to rapidly engineer new crop varieties with improved yield and immunity to pathogens.
A new study by Florida Museum researchers found that temperate species evolved first, driven by climate change 15 million years ago. Saxifragales, a flowering plant group with nearly 2,500 species, diversified before physical traits and habitats developed, contradicting the conventional view of evolutionary processes.
Michigan State University researchers have discovered an evolutionary function in wild tomato plants that could be used by modern plant breeders to create pest-resistant tomatoes. The team identified a specific gene that produces a sticky compound, which acts as natural insect repellent and helps protect the plant from insects.
Researchers found higher rates of adaptive evolution in genes involved in resource allocation, particularly in seeds and endosperm tissues. This suggests that conflicts among kin can lead to rapid evolution, supporting the idea of an evolutionary arms race within plant families.
In a two-year greenhouse experiment, plants pollinated by bumblebees without herbivory evolved more attractive flowers, while those with herbivory had higher concentrations of defensive toxic metabolites. Plants developed a tendency to spontaneously self-pollinate when damaged by caterpillars.
New research by McMaster behavioural scientists reveals evolution can work backwards to benefit related members of the same group. Selfless traits like sharing food and keeping watch are mathematically equivalent to decreased evolution of individually beneficial traits.
A new study explores how climate-driven evolution in tree populations changes their interaction with the soil environment, leading to reduced genetic variation and altered soil microbiome. Warmer temperatures result in earlier bud break and leaf-out, reducing genetic variation and affecting soil microbial communities.
A study reveals that unique genetic features in desiccation-sensing algae enabled the colonization of terrestrial habitats. The SAL1-PAP chloroplast retrograde signaling mechanism allowed early land plants to sense drought and protect vital photosynthetic tissue, facilitating their adaptation to harsh environments.
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 previously believed pathway for sRNA production has been found to be present widely in flowering plants, evolved over 200 million years ago. This discovery could improve crop yields and breeding better varieties.
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.
The discovery of exceptionally preserved late-Permian plant fossils in Jordan pushes back the ages of important seed plant lineages and suggests that drought-prone tropical habitats served as evolutionary cradles for early plant diversification. The findings indicate that these plant lineages survived the mass extinction event at the e...
A team of ETH Zurich researchers has found a way to harmonize conflicting results from fossil-based and phylogenetic analysis of species emergence and extinction. By considering different mechanisms of speciation, such as budding, cladogenesis, and anagenesis, they have developed a computer model that accounts for these assumptions, pr...
A new computer model flags areas ripe for preservation of California's native species, focusing on biodiversity hotspots and evolutionary uniqueness. The model aims to prioritize conservation efforts with limited funds.
A new study by McGill researchers found that, on average, human disturbances do not appear to accelerate evolution. The authors analyzed 40 studies on species' responses to human activity, covering 102 traits in 37 different species.
Researchers are studying the genetic basis of carnivorous plant evolution, seeking to understand how similar traits emerge in different orders. Dr. Kenji Fukushima's work aims to develop new molecular tools for analyzing specific genes in carnivorous plants.
A team of researchers discovered well-dated plant fossils in the Lawula Formation, which provided a unique perspective on the uplift history of southeastern Tibet. The findings indicate that the region was around 3 km high and rising at an early stage of the Eocene-Oligocene transition, contradicting previous theories.
A new study has identified the earliest stages of evolution where distinct sperm and egg cell types first emerged from a simpler ancestral mating system. The research found that the sex-determining region associated with male-female differentiation in algae is surprisingly small, consisting of only one gene called MID.
Researchers propose two distinct floras, Rhododendron Flora and Metasequoia Flora, to represent core regions of the Sino-Japanese and Sino-Himalayan flora. The study suggests East Asian flora is relatively young, with most clades originating since the Miocene, and may be a refugial area for ancient relict plants.
Research shows that plants evolve to stop producing toxic chemicals in response to immune herbivores. The study found genetic evidence of a gene's evolution and loss in multiple plant lineages, supporting the 'defense de-escalation' hypothesis.
A new theory proposes that underground adaptations, such as efficient roots and reduced reliance on fungi, enabled plants to thrive in diverse environments. This finding has significant implications for conservation and understanding plant evolution.
A new study integrates various theories on plant evolution timescales, suggesting that land plants likely arose during the Cambrian period and vascular plants between the late Ordovician and Silurian periods. This finding challenges existing theories on Earth's terrestrial biosphere assembly.
The study reveals that flowering plants diversified suddenly in the Cretaceous period, while molecular-clock dating suggests an older origin. The discrepancy is attributed to false precision on both palaeontological and molecular evolutionary timescales.