Articles tagged with Plant Evolution
A new genus and species of algae called Protocodium sinense has been discovered in China, providing new insight into the early diversification of the plant kingdom. The fossils are remarkably modern-looking and suggest that green algae were already established in shallow waters as carbon dioxide recyclers and oxygen producers before th...
Two papers published in Nature Plants unveil the first full-length genomes for homosporous ferns, a group containing 99% of modern fern diversity. The Ceratopteris genome suggests that ferns stole genes from bacteria for anti-herbivory toxins.
A team of researchers developed a deep learning pipeline to analyze vascular system images of plants with high accuracy. The pipeline can detect vascular bundles, identify specific zones, and perform statistical analysis of traits in different stem internodes. This study has the potential to improve crop resilience and food security.
A self-pollinating monkeyflower plant lost 13-24% of its genetic variation within nine generations when isolated from bumble bees. This rapid loss of genetic variation could have devastating impacts on the plant's ability to adapt to changing environments, highlighting the importance of pollinators for plant survival.
Holocentric chromosomes have been found to promote rapid genome evolution by allowing the formation of new species through chromosome fusions. This non-classical mode of chromosome organization also stabilizes chromosomal fragments and facilitates DNA gene swapping, making it an exciting area for plant breeding.
The study of flying spider-monkey tree fern genome provides insights into fern evolution and arborescence. Ferns developed vascular tissues, including xylem and phloem, to transport water, nutrients, and food, which is a key innovation in land plant evolution.
Research reveals Arisaema urashima's thread selectively reels in fungus gnats, a key pollinator, by trapping them inside the spathe. The plant's 'fishing rod' appendage also reduces fruiting rate if removed, emphasizing its crucial role in attracting primary pollinators.
Researchers found that domesticated rye has smaller recombining regions, making it less resistant to climate change. In contrast, wild rye has a more diverse genetic makeup and can freely recombine its genetic material.
Researchers found that domesticated maize recruits different microbes from soil than its wild ancestors, including those involved in nitrogen cycling. This shift may be driving the need for synthetic fertilizers, but understanding the ancestral microbiome could help breed crops more sustainably.
Researchers discovered that plant carnivory evolved from calcium molecules' dynamic movement within cells in response to touch from live prey. This finding broadens our understanding of how plants interact with their environments and may lead to the development of crops that can survive in challenging conditions.
Researchers have discovered exceptionally rich assemblages of plant spine fossils in central Tibet, confirming an early diversification of spiny plants around 39 million years ago. The findings suggest that a drying and cooling climate may have driven the evolution of physical defense mechanisms against large herbivores.
Researchers at NC State University discovered that a maize gene called HPC1 helps plants adapt to high altitudes and cold temperatures. The gene originated from teosinte mexicana and has been retained in modern-day corn, allowing it to thrive in challenging environments.
Researchers have identified a family of proteins called PIN-FORMED as essential for auxin transport, guiding plant growth and development. The discovery provides the first structural basis of auxin transport by PIN proteins and sheds light on how herbicides can be recognized by these proteins.
Researchers at Nagoya University discovered a tubulin homolog protein in the archaeon Odinarchaeota, which forms microtubules critical to cell organization. The study reveals an intermediate structure between bacterial and eukaryotic cells, shedding light on the evolution of complex cellular features.
The invasion of plants onto land triggered a transformation of the hostile environment, accelerating atmospheric changes. This process laid the foundations for modern terrestrial flora, including flowering plants that comprise over 90% of all known species.
Researchers have discovered a new plant species that produces blue berries through structural color, which reflects light and gives the fruit a metallic finish. The unique trait is shared by only six plants in the world, highlighting the complexity of evolution and the possibility of multiple evolutionary pathways.
A study on Arabidopsis thaliana found that a two-step molecular process rewired nutrient transport, allowing the plants to thrive in manganese-limited volcanic soil. The discovery provides insights into nutrient homeostasis and has implications for evolutionary biology and crop improvement.
Research revealed that the absence of megaherbivores led to denser vegetations with larger seeds and fruits, as smaller animals could disperse these through their excretions. Defense traits like spines and thorns decreased during this gap but returned when new megaherbivores evolved.
Researchers discover that type 1 TPCs encode SV channels in plant vacuoles, while type 2 TPCs likely encode distinct ion channels. This study provides functional and evolutionary insights into the TPC family in plants, shedding light on their role in plant growth and defence mechanisms.
Researchers at Stanford University discovered that extremophytes, such as Schrenkiella parvula, can thrive and even grow faster under dry, salty, or cold conditions. This unique response is attributed to the activation of different genetic pathways in these plants, allowing them to bypass conventional stress responses.
A recent study published in Science found that urbanization drives the evolution of white clover in cities worldwide. The researchers collected over 100,000 plants from 160 cities and discovered that plants producing less cyanate were more common in urban areas compared to non-urban areas.
Researchers developed a computational technique to predict favorable gene sequences that make Rubisco, a key plant enzyme for photosynthesis. The study found promise for developing faster and more efficient Rubisco enzymes to increase crop yields and adapt to hot, dry future conditions.
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.
A new molecular study of grasses reveals a clear picture of their evolutionary relationships, shedding light on the evolution of C4 photosynthesis involved in heat and drought tolerance. The research provides evidence that this type of photosynthesis evolved independently multiple times within different grass lineages.
Researchers found that hundreds of bacteria genes were integrated into ancient plants, granting them desirable traits for land colonization. The study suggests horizontal gene transfer played a significant role in land-plant evolution, allowing plants to adapt rapidly to new environments.
Researchers at the University of Copenhagen have discovered that plants defend themselves against herbivores by redirecting their defenses to younger leaves, using substances like glucosinolates found in wasabi and mustard. This self-adjustment helps ensure the survival of future generations.
Research by Shan Jiang found that introducing nature views into hospital corridors can significantly ease confusion and anger in navigating large medical complexes. The study revealed that participants used shorter time and walked less distance to complete wayfinding tasks when exposed to green spaces.
Researchers analyzed the largest genomic dataset of plants, revealing how early traits like stomata and roots evolved. The study sheds light on the genetic basis of plant evolution, highlighting the role of new and old genes in adapting to land colonization.
Researchers have discovered an ancient receptor protein that can detect karrikins in smoke from burnt plant material, initiating molecular signals to speed up seed germination. The study also found that the receptors play a role in sensing growth hormones in plants, shedding light on the enigmatic karrikin signaling pathway.
A nationwide study is exploring how genomic ancestry, genomic variation, and environmental variation interact to produce traits important for forest tree fitness. Researchers are using whole-genome sequencing data with large-scale networks of replicated common garden experiments.
Researchers discover unique bat-pollination system in Fiji's kuluva trees, highlighting co-dependence between species and urgent conservation needs. The novel chiropteropisteusis system sheds light on the evolution of flowering plants and threatens tree and bat species.
A recent study found 24 different pathotypes of Phytophthora sojae in Quebec and Ontario compared to eight in Manitoba, indicating declining resistance to Rps genes. More than 85% of fields surveyed contained isolates that could overcome the Rps genes present in planted varieties.
Researchers confirm that Chevalier barley came from a single plant, analyzing seed samples older than 150 years. The study reveals how the single plant's genetic signature was preserved and used to create modern malting barley varieties.
Researchers found that plants have evolved a way to protect their most important genes from mutation, which has significant implications for understanding crop domestication and cancer. The study discovered non-random patterns in DNA mutations, with essential genes overrepresented in regions where mutations are rare.
A retrospective analysis of oak tree genomes reveals an identical evolutionary pattern across three French forests, differing according to climatic periods. Oaks can evolve rapidly and redirect their evolutionary trajectories in response to changes in climate, highlighting the need for adapting forest management practices.
Researchers identified global factors explaining plant diversity in form and function, influenced by climate and soil properties. Characteristics such as size, structure, and life span were shown to be determined by these factors.
Researchers have identified genes associated with spinach's resistance to downy mildew and its levels of oxalates. The findings could help breeders produce disease-resistant varieties with more consumer appeal, improving spinach's market prospects.
A team of evolutionary biologists and botanists found that the spoonweed genus, which emerged as a cold specialist during the Ice Age, repeatedly adapted to rapidly alternating cold and warm periods. The researchers identified physiological adaptations to drought and salt stress that helped the plants develop high tolerance to cold.
A new study reveals that Xanthomonas euvesicatoria has evolved to evade the immune system of tomato plants by changing a single amino acid in its flagellin proteins. This finding poses significant challenges for breeding disease-resistant tomato varieties, forcing farmers to rely on fungicides and copper treatments.
A team of biologists identified the fungus Verticillium dahliae's effector molecule VdAMP3, which targets beneficial organisms in the plant's microbiome to promote infection. This discovery highlights the importance of considering the entire microbiome when understanding disease.
Researchers discovered that humidity-driven movement in spore-bearing leaves is the key mechanism behind the unique timing of spore dispersal in the sensitive fern. The study found that dead fronds open when dry and close when wet due to differential cell expansion, a process also observed in pine cones.
A study published in Proceedings of the Royal Society B reveals that a rare alga, Chlorokybus, contains at least five distinct species previously thought to be a single entity. Genetic analysis confirmed these findings, shedding new light on the biodiversity and evolutionary pathways of this key algal group.
Flowering plants dramatically increased Earth's biodiversity and rebuilt entire ecosystems after the dinosaur extinction. Angiosperms' unique features, such as colorful flowers and adaptations for insect pollination, drove their success.
The study provides insights into the genetic evolution and migration of chickpeas, offering a roadmap for improving the crop's nutritional value and climate resilience. Chickpeas are a main protein source for hundreds of millions of people worldwide, particularly in South Asia, Africa, and other parts of the world.
An international team of researchers identified genes associated with plant survival in the Atacama Desert, a harsh environment in Chile. These findings may help scientists breed crops that can thrive in increasingly dry climates and mitigate the effects of climate change.
A recent study suggests that primates and marsupials were among the few tree-dwelling mammals that survived an asteroid impact 66 million years ago. The researchers used computer models and fossil records to find that most surviving mammals did not rely on trees, but some arboreal species may have been versatile enough to adapt.
A team of researchers discovered that KNOX and BELL transcription factors evolved to activate zygotes in plants, later shifting their role to maintain organ development in land plants. The study used the liverwort Marchantia polymorpha as a model organism.
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.
A University of Arizona-led study found that drought and seasonal fluctuations in rainfall are larger drivers of evolutionary diversity than warm temperatures. The research team created maps of evolutionary diversity across North, Central and South America, revealing that deserts have more plant species compared to forests due to drought.
Researchers sequenced the genomes of an ancient date palm leaf and found evidence of hybridization with wild relatives. The study sheds light on the evolution of date palms in North Africa, showing that genetic material from another species was present 2,200 years ago.
Scientists are still unraveling how pathogens adapt to changing conditions, including climate change and global trade. Genome sequencing and big data technologies have revealed that dramatic events like hybridization between pathogen species can lead to rapid evolution of virulence on new host plants.
Scientists have discovered that ferns can actively close their stomata in response to low humidity or the hormone ABA, similar to flowering plants. This finding confirms that the earliest land plants were able to control water loss through stomata, providing valuable insights into plant evolution and climate change adaptation.
Researchers reconstructed the oldest known form of roots in a 407-million-year-old plant fossil, revealing a complex branching system that differed from modern plants. This discovery provides insight into the evolution of early land plants and their impact on the environment.
Research at Washington University in St. Louis reveals that white clover's chemical defense against insect pests comes from both of its parental species, not just one as previously thought. The plant's ecological success can be attributed to this cyanogenesis process.
Researchers sequenced DNA from plant specimens collected nearly 50 years ago to analyze genetic diversity and its response to climate change. The study found that several species restricted to the Guadalupe Mountains had surprisingly high amounts of genetic diversity, which could help them adapt to changing conditions.
A new study reconciles the molecular clock with the fossil record of plants by linking older spore-like microfossils to younger plant spores derived from charophyte algae, revealing the evolutionary assembly of the plant regulatory and developmental genome.
Researchers found that pepper plant fruit scents contain complex mixtures of volatile organic compounds, including alpha-caryophyllene and 2-heptanol, which attract specific bat species. The study suggests bats use these chemical signals to select ripe fruits and find the specific Piper species they eat most.
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.
Researchers have discovered a new carnivorous plant, Triantha occidentalis, that traps insects near its insect-pollinated flowers, avoiding the death of potential pollinators. The plant's sticky hairs only entrap small midges and insects, allowing larger bees and butterflies to act as pollinators.