Abscisic acid receptors in Populus canescens aid water use
Botanists show how abscisic acid receptors in poplar can ease drought stress. More
Alex Assiry
Alex Assiry is an editorial assistant in the Annals of Botany Office. When not working, Alex listens for the opportunity to help.
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Morphological and physiological traits determine Arundo drought recovery
Arundo donax often reproduces clonally, but a new study finds small differences can affect how it recovers from drought stress. More
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Miscanthus response to combinations of salinity and drought
As mentioned a couple of days ago, there’s a big push to try growing biofuels on marginal land. “Since irrigation of biomass crops is unlikely to be economic, it is important to identify genotypes that optimize the use of water in different climatic regions and those that are tolerant to salinity and water-deficit stresses,” said […] More
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Where do all the Epipactis orchids come from?
Botanists use the orchid genus Epipactis as a model for speciation, but unravelling its family tree has been difficult. More
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in Life
Why do cabbage leaves smell? They’re storing sulphur.
Sulphur (S) is an essential macronutrient for seeds, so why do brassicas store it in leaves? More
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Role of ploidy in Arabidopsis arenosa colonization of alpine habitats
Doubling the chromosomes of Arabidopsis arenosa does not always lead to strong ecological niche differentiation. More
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Compensatory base changes on an ITS2 phylogeny of Corydalis
Compensatory base changes (CBCs) that occur in stems of ribosomal internal transcribed spacer 2 (ITS2) can have important phylogenetic implications. Li et al. quantify how CBCs affect selection of substitution models and values for species delimitation in a more recent Corydalis lineage by using both DNA- and RNA-specific models. They demonstrate that application of conventional […] More
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Origin and genome evolution of Cardamine occulta
For the first time, whole-genome cytogenomic maps were established for octoploid plants. More
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Role of extensin arabinosylation in root defence
Extensins are hydroxyproline-rich glycoproteins thought to strengthen the plant cell wall, one of the first barriers against pathogens, through intra- and intermolecular cross-links. The glycan moiety of extensins is believed to confer the correct structural conformation to the glycoprotein, leading to self-assembly within the cell wall that helps limit microbial adherence and invasion. However, this […] More
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NF-Y transcription factor complex regulates plant defence
The nuclear factor Y (NF-Y) transcription factor complex is important in plant growth, development and stress response. Information regarding this transcription factor complex is limited in cassava (Manihot esculenta). In this study, 15 MeNF-YAs, 21 MeNF-YBs and 15 MeNF-YCs were comprehensively characterized during plant defence. The regulation of MeNF-Ys in response to Xam indicated their […] More
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Interactive effects of prolonged drought and warming on plant growth and chemistry
Future shifts in precipitation regimes and temperature are expected to affect plant traits dramatically. To date, many studies have explored the effects of acute stresses, but few have investigated the consequences of prolonged shifts in climatic conditions on plant growth and chemistry. Orians and colleagues assessed plant size and metabolite profiles on naturally occurring Plantago […] More
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Drought stress in Arabidopsis species
Water limitation is an important determinant of the distribution, abundance and diversity of plant species. Yet, little is known about how the response to limiting water supply changes among closely related plant species with distinct ecological preferences. Comparison of the model annual species Arabidopsis thaliana with its close perennial relatives A. lyrata and A. halleri, […] More
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