Plant-robber-pollinator interactions are studied in an alpine plant, Salvia przewalskii, that is pollinated by long-tongued Bombus religiosus and short-tongued B. friseanus, and robbed by B. friseanus. Ye et al. find that neither fruit set nor seed set were significantly affected by nectar robbing, and furthermore that nectar replenishment does not differ between flowers that are […] More
Even plants find it healthy to eat their greens. More
Foliar concentrations of plant secondary metabolites (PSMs) are influenced by soil water availability. However, concentrations of individual compounds in previously published studies have been reported to be higher, lower or to remain stable during water deficit. McKiernan et al. use multiple levels of continuous water deficit to test the effect on plant stress levels, growth […] More
Nutrition of carnivorous plants has rarely been studied in dry-soil species with long, deep roots, with the focus hitherto on shallow-rooted genera from boggy soils. Paniw et al. assess the role of leaf (via fly feeding) and root (via soil fertilizer) nutrient uptake in growth promotion of Drosophyllum lusitanicum. Insect feeding significantly promotes growth, with […] More
Stomata are pores regulating gas exchange in land plants. Stomatal morphology has remained largely consistent through ∼400 million years of plant evolution, though cell wall composition has changed. Shtein et al. investigate stomatal cell wall composition within a broad evolutionary spectrum of plants, including ferns, angiosperms and grasses. The data demonstrate distinct cell wall patterns […] More
During the growing season, the cambium of conifer trees produces successive rows of xylem cells, known as tracheids. Current knowledge on this process mainly stems from xylogenesis monitoring spanning a few years. In this investigation of the effects of long-term inter-annual climate variability on tracheid formation and wall thickening, Castagneri et al. retrospectively study tree-ring […] More
Some things are hard to digest, but is an excess of phosphorus really one of them? More
Apomixis (asexual seed formation) generates clonal plants with a maternal genotype. Apomictic Hieracium subgenus Pilosella species mitotically form female gametes, with the seed’s embryo and endosperm developing autonomously (without fertilisation). Henderson et al. examine expression of the dominant autonomous endosperm (AutE) trait in progeny of crosses characterised by female gametes forming mitotically or sexually via […] More
The obturator bridges the downward transit of the pollen tube through style to ovary in many angiosperms. Examining pollen tube growth kinetics in the pistil in Malus × domestica and relating these to changes occurring on the obturator using histochemistry and immunocytochemistry in order to determine how the key access point of the obturator is […] More
Once again all times are UTC. PDT (Los Angeles, Vancouver) = UTC -7 MDT (Denver, Edmonton) = UTC -6 CDT (Chicago, Winnipeg) = UTC -5 EDT (New York, Montréal) = UTC -4 ADT/BRT (Halifax, Brasília) = UTC -3 BST/WEST (UK, Portugal) = UTC +1 CEST (France, Italy) = UTC +2 IST (India) = UTC +5h30m […] More
Yesterday caught me by surprise. Keyhole.co is reporting over eight hundred thousand accounts have been exposed to the #BotanyLive tag. Before we get carried away, I don’t think anyone sees everything in their Twitter stream, but we know there’s certainly an audience of thousands. How do we know? Herbarium curators Rachel and Donna are going […] More
The publisher of The Annals of Botany Company journals Annals of Botany and AoB Plants, Oxford University Press, has many titles about plants and plant science to further explore the fascinating world of plants. Here is a curated list of some of them in observation of Fascination of Plants Day 2017: Flora of Middle Earth Walter […] More
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