Preprints

Filtering by Subject: Botany

Incomplete lineage sorting and hybridization as drivers of tree discordance in Petunia and related genera (Petunieae, Solanaceae)

Pedro Henrique Pezzi, Lucas C Wheeler, Loreta Brandão Freitas, et al.

Published: 2024-03-29
Subjects: Biodiversity, Bioinformatics, Botany, Genomics

Despite the overarching history of species divergence, phylogenetic studies often reveal distinct topologies across regions of the genome. The sources of these gene tree discordances are variable, but incomplete lineage sorting (ILS) and hybridization are among those with the most significant biological importance. Petunia serves as a classic system for studying hybridization in the wild. While [...]

Sexual system variation in the legumes (Fabaceae): prospects for morphological, evolutionary and genomic study

Quentin Cronk, Leonardo M Borges

Published: 2024-02-02
Subjects: Biology, Botany, Plant Biology, Plant Breeding and Genetics Life Sciences, Plant Sciences

Although the great majority of legume species are cosexual with hemaphrodite flowers, a variety of sexual systems are observed in the family including monoecy, andromonoecy, androdioecy and dioecy. Such broad terms conceal much variation, details that may be of importance in understanding the evolutionary and ecological basis of reproductive systems. This variation is often inadequately described [...]

Extinction drives recent thermophilization but does not trigger homogenization in forest understory

Jeremy Borderieux, Jean-Claude Gégout, Josep M Serra-Diaz

Published: 2023-07-05
Subjects: Botany, Forest Sciences, Life Sciences, Terrestrial and Aquatic Ecology

The ongoing climate change is triggering plant community thermophilization. This selection process is ought to shift community composition toward species adapted to warmer climates but may also lead to biotic homogenization. The link between thermophilization and homogenization, and the community dynamics that drive them (colonization and extinction) remain unknow, but is critical for [...]

Evolutionary origins of the Mesoamerican-eastern United States floristic disjunction: current status and future prospects

Gregory W Stull

Published: 2022-11-08
Subjects: Biodiversity, Biology, Botany, Ecology and Evolutionary Biology, Evolution, Life Sciences, Plant Sciences

Biogeographic disjunction patterns, where multiple taxonomic groups are shared between isolated geographic areas, represent excellent systems for investigating the historical assembly of modern biotas as well as fundamental biological processes such as speciation, diversification, niche evolution, and evolutionary responses to climate change. Studies on plant genera disjunct across the Northern [...]

Deep reticulation: the long legacy of hybridization in vascular plant evolution

Gregory W Stull, Kasey K Pham, Pamela S Soltis, et al.

Published: 2022-10-26
Subjects: Biodiversity, Botany, Ecology and Evolutionary Biology, Evolution, Life Sciences, Plant Biology, Plant Sciences

Hybridization has long been recognized as a fundamental evolutionary process in plants, but our understanding of its phylogenetic distribution and biological significance across deep evolutionary scales has been largely obscure—until recently. Over the past decade, genomic and phylogenomic datasets have revealed, perhaps not surprisingly, that hybridization, often associated with polyploidy, has [...]

When and how does photoinhibition matter for plant fitness?

Shan Kothari

Published: 2022-09-14
Subjects: Botany, Ecology and Evolutionary Biology, Life Sciences, Physiology, Plant Biology, Plant Sciences, Population Biology, Terrestrial and Aquatic Ecology

The many biophysical factors that shape how plant species sort across environmental gradients may include photoinhibition, which I define broadly as oxidative damage that plants and other phototrophs risk incurring when they absorb excess light energy they cannot safely dissipate. Photoinhibition is seldom explicitly discussed as a potential driver of plant fitness and distributions. Here, I aim [...]

Heterostyly on Japanese Islands

kenta watanabe

Published: 2022-09-07
Subjects: Botany, Life Sciences, Plant Sciences

Heterostyly is a genetically controlled floral polymorphism that promote outbreeding. Although many studies on heterostyly have been done in Japan, there have been no comprehensive analysis nor review. Here I present the list of heterostyly in the native flora of Japan through reviewing references. By using this list, I tested the difference in occurrence of heterostylous species among subgroups [...]

High tolerance to zinc but no evidence for local adaptation in the aquatic plant Lemna minor

Sofia Vamos, Cheng Li, Aboubakr Moradi, et al.

Published: 2022-07-06
Subjects: Biodiversity, Botany, Life Sciences, Plant Sciences

Duckweeds are a widely distributed and economically important aquatic plant family that have high potential for phytoremediation of polluted water bodies. We collected four ecotypes of the common duckweed (Lemna minor) from the four corners of Switzerland and assessed how their home vs. away environments influenced their growth. Additionally, we investigated their response to a metal pollutant [...]

The Global Forest Health Crisis: A Public Good Social Dilemma in Need of International Collective Action

Geoffrey M Williams, Matthew D. Ginzel, Zhao Ma, et al.

Published: 2022-03-11
Subjects: Agricultural and Resource Economics, Agricultural Economics, Agricultural Science, Agriculture, Behavioral Economics, Biodiversity, Biology, Biosecurity, Botany, Economics, Entomology, Environmental Microbiology and Microbial Ecology Life Sciences, Environmental Studies, Forest Biology, Forest Management, Forest Sciences, International Relations, Life Sciences, Microbiology, Other Forestry and Forest Sciences, Other Plant Sciences, Pathogenic Microbiology, Plant Biology, Plant Pathology, Plant Sciences, Political Science, Science and Technology Studies, Social and Behavioral Sciences

Society is confronted by interconnected threats to ecological sustainability. Among these is the devastation of forests by destructive non-native pathogens and insects introduced through global trade, leading to the loss of critical ecosystem services and a global forest health crisis. We argue that the forest health crisis is a public good social dilemma and propose a response framework that [...]

Understanding plant microbiomes requires a G x E framework

Jun-Hee Jung, Frank Reis, Christina Richards, et al.

Published: 2021-05-21
Subjects: Biodiversity, Botany, Ecology and Evolutionary Biology, Environmental Microbiology and Microbial Ecology Life Sciences, Life Sciences, Microbiology, Plant Breeding and Genetics Life Sciences, Plant Sciences, Terrestrial and Aquatic Ecology

Plant microbiomes have become one of the hottest topics in plant biology. Driven by the increased availability of metagenome sequencing methods, analyses of plant-associated microbiomes have been skyrocketing during the last decade. They have generally taken one of two main perspectives: (1) a focus on the microbiome itself, where researchers describe microbiome diversity and attempt to [...]

ausplotsR: An R package for rapid extraction and analysis of vegetation and soil data collected by Australia’s Terrestrial Ecosystem Research Network

Samantha Munroe, Greg Guerin, Tom Saleeba, et al.

Published: 2020-12-15
Subjects: Biostatistics, Botany, Life Sciences, Other Plant Sciences, Physical Sciences and Mathematics, Plant Biology, Plant Sciences, Statistics and Probability

The Terrestrial Ecosystem Research Network (TERN), Australia’s national land ecosystem monitoring program, measures critical environmental attributes from local to continental scale and generates quality data for research and land management. Since 2011, TERN has performed standardised field surveys and sampling across a national plot network. At each plot, TERN records vegetation structure, [...]

Ecosystem services of a functionally diverse riparian zone in the Amazon–Cerrado agricultural frontier

Rodolfo Luiz Bezerra Nóbrega, Taciana Ziembowicz, Gilmar N. Torres, et al.

Published: 2019-08-22
Subjects: Agronomy and Crop Sciences Life Sciences, Biochemistry, Biochemistry, Biophysics, and Structural Biology, Biodiversity, Botany, Ecology and Evolutionary Biology, Forest Sciences, Life Sciences, Plant Sciences, Terrestrial and Aquatic Ecology

The ecological services provided by protected riparian zones in human-altered landscapes are widely acknowledged, yet little is known about them. In this study, we assess ecosystem properties that a protected riparian zone maintains in contrast to environmental changes in its surroundings caused by agro-industrial activities in the northwestern fringe of the Brazilian Cerrado on the [...]

Relationships between mycorrhizal type and leaf flammability in the Australian flora

Jeff R Powell, Rohan Riley, William K Cornwell

Published: 2019-07-22
Subjects: Biodiversity, Botany, Ecology and Evolutionary Biology, Environmental Microbiology and Microbial Ecology Life Sciences, Evolution, Life Sciences, Microbiology, Plant Sciences

Mycorrhizal fungi have been linked to fire processes in natural ecosystems via their effects on litter decomposability but, to our knowledge, relationships between mycorrhizal fungi and leaf traits directly associated with aspects of flammability have not been studied. Here, we assessed the relationships among leaf traits and host mycorrhizal type for 77 species of Australian trees and shrubs to [...]

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