AoB PLANTS

https://academic.oup.com/aobpla

List of Papers (Total 185)

Genetic regulation of defence responses in cotton to insect herbivores

Induced defences play a key role in plant resistance against herbivores, and mediate interactions between phytophagous arthropods and plants via genes and signal pathways. Here, we examined the interaction between Helicoverpa armigera and cotton and the subsequent regulation of cotton defences. Quantitative real-time PCR data indicated that Ghppo1 expression was up-regulated by...

Interactive effects of deer exclusion and exotic plant removal on deciduous forest understory communities

Mammalian herbivory and exotic plant species interactions are an important ongoing research topic, due to their presumed impacts on native biodiversity. The extent to which these interactions affect forest understory plant community composition and persistence was the subject of our study. We conducted a 5-year, 2 × 2 factorial experiment in three mid-Atlantic US deciduous...

An indicator approach to capture impacts of white-tailed deer and other ungulates in the presence of multiple associated stressors

Management of ungulates is contested ground that lacks stakeholder agreement on desirable population sizes and management approaches. Unfortunately, we often miss information about extent of local impacts, for example on plant communities, to guide management decisions. Typical vegetation impact assessments like the woody browse index do not assess herbaceous plants, and...

Local shifts in floral biotic interactions in habitat edges and their effect on quantity and quality of plant offspring

Spatial shifts in insect fauna due to ecological heterogeneity can severely constrain plant reproduction. Nonetheless, data showing effects of insect visit patterns and intensity of mutualistic and/or antagonistic plant–insect interactions on plant reproduction over structured ecological gradients remain scarce. We investigated how changes in flower-visitor abundance, identity...

Evolution of pollination systems involving edible trichomes in orchids

Most flowering plants need biotic vectors for pollen transfer. Consequently, the emergence and maintenance of floral attributes are driven by selection generated by pollinators. As a result of such selective pressures, new strategies related to pollinator attraction and rewards can arise. In addition to nectar and pollen, pollinators exploit floral perfumes, wax, resins, edible...

Temporal variations in methane emissions from emergent aquatic macrophytes in two boreonemoral lakes

Methane (CH4) emissions via emergent aquatic macrophytes can contribute substantially to the global CH4 balance. We addressed temporal variability in CH4 flux by using the static chamber approach to quantify fluxes from plots dominated by two species considered to differ in flux transport mechanisms (Phragmites australis, Carex rostrata). Temporal variability in daily mean...

Differential responses of invasive and native plants to warming with simulated changes in diurnal temperature ranges

Although many studies have documented the effects of global warming on invasive plants, little is known about whether the effects of warming on plant invasion differ depending on the imposed change in different diurnal temperature ranges (DTR). We tested the impact of warming with DTR change on seed germination and seedling growth of eight species in the family Asteraceae. Four...

Stigmatic limitations on reproductive success in a paleotropical tree: causes and consequences

Success in reproduction is subject to the successful initiation as well as successful completion of a chain of consecutive events starting from flower formation and ending with viable seed production. A pivotal role in this chain is played by the stigma which is the seat of pollen recognition and initiation of pollen–pistil interaction. An interesting feature of the family...

Slow stamen movement in a perennial herb decreases male–male and male–female interference

Approximately 80 % of angiosperm species produce hermaphroditic flowers, which face the problem of male–male sexual interference (one or more anthers gets in the way of disseminating pollen from other anthers) or male–female sexual interference (the pistil interferes with disseminating pollen from the anthers by preventing the anther from touching a pollinator, or the anther...

Impact of phosphorus on rhizosphere organic anions of wheat at different growth stages under field conditions

Phosphorus (P) is one of the main limiting factors for crop productivity while rhizosphere organic anions have been hypothesized to play an important role in P acquisition. Sampling in a long-term field experiment was carried out in order to understand the impact of long-term differences in P fertilization on secretion of organic anions under field conditions. Rhizosphere organic...

White-tailed deer browse on an invasive shrub with extended leaf phenology meets assumptions of an apparent competition hypothesis

It has been hypothesized that invasive plant species with extended leaf phenology (ELP) elevate generalist herbivore populations, increasing herbivory on native plants (apparent competition). This hypothesis assumes that consumption of the invasive is associated with periods of ELP, the invasive is a major component of the herbivore’s diet, and that it is more nutritious than...

The global distribution of bamboos: assessing correlates of introduction and invasion

There is a long history of species being moved around the world by humans. These introduced species can provide substantial benefits, but they can also have undesirable consequences. We explore the importance of human activities on the processes of species dissemination and potential invasions using the Poaceae subfamily Bambusoideae (‘bamboos’), a group that contains taxa that...

Seed dormancy-breaking in a cold desert shrub in relation to sand temperature and moisture

Seasonal periodicity of seed germination and its relationship to seasonal changes in temperature and soil moisture have been well studied in seeds of species with physiological dormancy. However, relatively little information is available on the role of these environmental factors in controlling germination of seeds with physical dormancy (PY). Our primary aim was to determine if...

Size-dependent sex allocation and reproductive investment in a gynodioecious shrub

In sexually dimorphic plants, resource allocation to reproduction often differs between sex morphs. In gynodioecious species, i.e. coexisting hermaphrodite and female plants within a population, females often produce more fruits than hermaphrodites. Since fruit production is costlier than flower production, hermaphrodites and females may regulate flower and fruit production...

Is invasion success of Australian trees mediated by their native biogeography, phylogenetic history, or both?

For a plant species to become invasive it has to progress along the introduction-naturalization-invasion (INI) continuum which reflects the joint direction of niche breadth. Identification of traits that correlate with and drive species invasiveness along the continuum is a major focus of invasion biology. If invasiveness is underlain by heritable traits, and if such traits are...