Articles tagged with Land Plants
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.
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.
A study published in Nature Plants reveals a comprehensive atlas of gene expression data from ten different species of land plants. The analysis identified novel and missing components involved in the formation of sex organs and cells, showing that many groups of genes emerged through the repurpose of existing genetic material. The tea...
A new study published in Nature found that the arrival of plants on land about 400 million years ago may have altered the Earth's natural climate regulation. The researchers discovered a shift in the global formation of clay, which led to reduced carbon dioxide levels and a cooler planet.
Researchers demonstrated a plant-fungus alliance played a crucial role in the origin of terrestrial vegetation. By studying a bryophyte, they found a lipid transfer mechanism similar to that in vascular plants, confirming their hypothesis.
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.
A Rutgers-led team of scientists recommends combining two cutting-edge tools to help understand climate change.
Cold tolerance is more variable than heat tolerance across plant species and regions, reflecting evolutionary and geographical histories. Temperate plants are particularly vulnerable to climate change.
The Penium margaritaceum genome provides insights into the origins of land plants by revealing footprints of adaptations for UV radiation protection and cell wall structure. The genome contains genes involved in regulatory systems, hormone signaling, and mucilage production, which are essential for structural support.
Researchers have discovered a new ancient plant species that provides a unique glimpse into the evolutionary process of reproductive biology in seed plants. The 400 million-year-old fossilized specimen reveals a spectrum of spore sizes, a precursor to specialized strategies in land plants.
Research on ancient hornwort genomes has identified genes that boost carbon dioxide concentration, increasing yield, and those promoting symbiosis with bacteria for nitrogen acquisition. This discovery may lead to more efficient crops requiring less fertilizer.
Researchers sequenced three hornwort genomes, revealing genes that could boost crop efficiency and reduce nitrogen fertilizer use. The findings shed light on the evolution of early land plants and provide insights into the unique biology of hornworts.
A study published in Nature Plants reveals that three genes are shared exclusively by plants forming intracellular symbiosis with different microbial partners. This finding demonstrates a conserved genetic program underlying diverse types of symbioses, allowing plants to access additional nutrients.
Virginia Tech paleontologists have discovered 1 billion-year-old micro-fossils of green seaweeds that could be the ancestor of early land plants and trees. The fossils, found in rock near Dalian in northern China, are barely visible to the naked eye and display complex multicellularity.
Scientists discovered two bursts of new genes that drove the evolution of land plants, contradicting previous gradualistic views. These genetic innovations enabled plant multicellularity and adaptation to terrestrial environments.
A new University of Arizona study found that 36.5% of all land plant species are very rare, with many clustered in hotspots like the Northern Andes and Southeast Asia. These regions face a disproportionate risk of climate change and human disruption, threatening their survival.
An international research team investigated how evolutionary changes in receptor proteins led to the development of sensing mechanisms that aid plant stress responses. They found that the closest living algae relatives of land plants have a complete set of genes that strongly resemble the genetic framework used by land plants.
Research identifies GCAM1 transcription factor crucial for secondary bud formation in liverworts, revealing a common mechanism with angiosperms. This breakthrough has potential applications for increasing crop production through controlled axillary shoot formation.
The 'KARAPPO' gene is essential for initiating gemma development in liverwort, triggering cell elongation and asymmetrical cell divisions. This discovery has fundamental implications for understanding vegetative reproduction mechanisms and their potential applications in agriculture and biotechnology.
Researchers identified microRNAs that regulate plant reproduction in ancient liverwort species, also found in modern crops. The discovery may lead to new applications for predicting harvest times and improving crop yields.
A study proposes that the nitrogenase enzyme, essential for photosynthesis, blocked its own activity at 2% atmospheric oxygen levels, stabilizing oxygen levels for nearly two billion years. This negative feedback loop prevented further oxygen production and explains why oxygen levels rose to today's levels.
A new study found that fungi have a harder time growing in cattail roots underwater, suggesting that plants may not have relied on fungal helpers to get onto land. The research provides a new tool for understanding prehistoric ecosystems and challenges previous narratives about plant-fungal interactions.
A team of scientists has identified a stem cell inducing factor called STEMIN that enables the direct conversion of leaf cells to stem cells in plants. This discovery sheds light on the molecular mechanisms underlying stem cell formation and regeneration in land plants.
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 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 discovered that plants' built-in drought detection system has an unlikely origin: freshwater-dwelling streptophyte algae. This signaling pathway, which triggers plants' drought defenses, has remained virtually unchanged for hundreds of millions of years and exists across most plant lineages.
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 sequenced and analyzed the plastid genomes of two species of Balanophora, a fully parasitic mushroom-like plant, revealing a nontraditional genetic code. The discovery includes a novel stop codon TAG that encodes tryptophan, and most genes involved in protein synthesis reside outside the traditional plastid genome.
A machine-learning approach predicts plant species at risk of extinction using open-source data for over 150,000 land plant species. The approach identifies variables predicting extinction risk and calculates probability of a species being designated as endangered.
Researchers at Lawrence Berkeley National Laboratory have discovered a unique structure of photosystem I in the moss Physcomitrella patens, which is different from other types of plants. This finding may help understand plant terrestrialization and develop artificial photosynthesis.
The study's findings suggest that Chara braunii possesses all the necessary genes for cell division and phytohormone biosynthesis similar to those found in land plants. Additionally, it contains genes encoding Aux/IAA and ARF transcription factors involved in auxin response, which were not present in Klebsormidium nitens.
Researchers at the University of Bristol have revealed insights into how plants evolved from simple aquatic algae to complex, upright forms. The study found that CLAVATA peptides control cell growth and division at plant tips, enabling 3D shapes and multiple directional growth.
Research on freshwater algae Chara braunii reveals ancient genetic traits associated with plant adaptation, including the stress hormone abscisic acid and electrical signal transmission. These findings provide insights into the evolutionary origins of land-dwelling plants.
An international collaboration sequenced and analyzed the genome of Chara braunii, a freshwater green alga closely related to land plants. The study identified key genes that originated in a common ancestor shared by Chara and land plants, revealing that some important plant functions evolved before land plants existed.
A University of Washington-led team discovered that the MUTE gene regulates stomatal development in plants, controlling cell division and gas exchange. The study found that MUTE activates genes that promote cell division and repressors that prevent further division, resulting in a tightly coupled sequence of activation and repression.
Researchers found that liverworts can be infected by Phytophthora palmivora and respond with proteins similar to those in flowering plants. The discovery reveals early land plants were genetically equipped to respond to microbial infections, indicating an ancient relationship between plants and microbes.
Gene expression studies reveal genes involved in stress response signaling in streptophyte algae, the ancient ancestors of land plants. These findings provide insight into the evolution of land plant stress response mechanisms.
A research team led by Weihong Qiu has discovered a novel kinesin-14 motor that expands current understanding of the evolution and design principle of motor proteins. The discovery was made in land plants, which lack dynein but have many kinesin-14 motors.
New research reveals that plants originated 100 million years earlier than previously believed, with ancient plant fossils now estimated to be around 320 million years old. This discovery challenges existing models of atmospheric change and highlights the critical role of early plant life in shaping Earth's climate.
The study of Marchantia polymorpha's genome sheds light on land plant evolution, showing liverworts possess ancestral characteristics. The findings have significant implications for molecular and genetic studies, providing insights into future agricultural applications.
The liverwort's genome has provided insight into the transition from algae to land plants, identifying genes critical for plant growth and development. The study also found that early plants developed strategies for water retention and distribution, which are still employed by modern plants.
Researchers at University of Illinois find ancient fungal specimen with gills under cap, revealing insights into fungal evolution and adaptation to terrestrial environments. The oldest known fungus fossil, Gondwanagaricites magnificus, pushes the timeline for fungi's existence by millions of years.
Researchers found that low atmospheric oxygen levels from the Middle Ages lasted for 2 billion years, hindering complex life forms' emergence. The Great Oxidation Event introduced modern oxygen levels, and land plants played a crucial role in this change.
Researchers found that the plant hormone ABA did not yet regulate water balance in early land plants like ferns. Instead, it played a key role in sex determination. The study suggests that the evolution of ABA's function changed as plants transitioned to flowering plants.
Researchers identified MIG1 gene controlling root cortex development and arbuscular mycorrhiza fungi symbiosis. This enables plants to extract nutrients from the ground, leading to improved growth and health.
Early land plants like moss helped create modern levels of atmospheric oxygen, according to researchers. The study suggests that these simple plants' emergence and evolution permanently increased the flux of organic carbon into sedimentary rocks, driving up oxygen levels in a second oxygenation event.
Researchers have discovered ways to harness the development of stomata in grasses to boost carbon dioxide uptake and water efficiency. By rewiring the systems regulating stomata formation, scientists can improve growth performance in crops like maize, rice, and wheat.
Researchers at the University of Leeds discovered a key gene, ANR, that enabled plants to tolerate extreme dehydration, allowing them to colonize land around 500 million years ago. The gene is unique to basal land plants and plays a crucial role in responding to stress hormones like ABA.
Researchers present genetic and morphological evidence that terrestrial green algae are the ancestors of modern land plants, contradicting long-held theories. The study's findings have significant implications for our understanding of plant evolution and adaptation to life on land.
Scientists have discovered how an ancient alga could inhabit land and survive without a symbiotic relationship with fungi. The discovery sheds light on the origins of life on Earth and reveals that the alga had the necessary genes to interact with beneficial fungi while still in the water.
Research reveals that ancient aquatic algae were genetically pre-adapted to form symbiotic relationships with microorganisms, crucial for plant nutrient acquisition. This finding sheds light on the evolution of land plants from freshwater algae and could help unlock efficient nutrient acquisition in crops like cereals.
A new study from Duke University found that plant light-sensing molecules were inherited from ancient algae, contradicting the prevailing idea of bacterial origins. The researchers analyzed 300 DNA and RNA sequences from phytochrome proteins in a wide range of algae and land plants.
Researchers have found that diatoms grow faster in the presence of Sulfitobacter bacteria, which release a growth hormone beneficial to land plants. This discovery sheds light on the complex interactions between marine microbes and their environment, with potential implications for understanding ocean productivity and climate change.
Researchers at the Donald Danforth Plant Science Center used the world's largest single-celled organism, Caulerpa taxifolia, to investigate the nature of structure and form in plants. They found that different parts of the cell show distinctly different RNA patterns, which are also shared with land plants.
Researchers discovered that charophytes, a lineage of green algae closest to land plants, can detect ethylene gas and adapt to environmental conditions. The study found nearly identical molecular machinery in both algae and land plants, with implications for understanding plant stress response and evolution.
A team of international researchers used DNA sequences to reconstruct the evolution of plants, revealing new insights into their relationships and adaptations. The study, part of the One Thousand Plants initiative, generated millions of gene sequences from diverse plant species.
Researchers found that not all plants react to the fungus in the same way, with some experiencing increased catalpol and citric acid levels while others show little change. The study's findings suggest that the impact of the fungal symbiosis on plant chemistry is not uniform across all plant species.
Researchers at UC Davis discovered that aquatic algae can perceive light across the visible spectrum, allowing them to adapt to changing conditions. This broad spectral coverage helps algae make use of whatever light they can in the ocean.
A graduate student at UC Berkeley is using a new technique to recreate the appearance of ancient plants, shedding light on their evolution. The study, led by Jeff Benca, uses fossil fragments to create lifelike images of extinct plant species, including Leclercqia scolopendra, a centipede clubmoss from the Devonian Period.
Researchers at the University of Wisconsin-Madison discovered that calcium waves can transmit information in plant cells, allowing them to respond quickly to environmental stressors. The team found that these waves are involved in processing information and sending rapid signals to help plants adapt to changing conditions.