Annals of Botany

Annals of Botany News in Brief

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 […]

Annals of Botany News in Brief

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 […]

Annals of Botany News in Brief

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 […]

Annals of Botany News in Brief

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, […]

Annals of Botany News in Brief

Effect of climatic fluctuations of the Quaternary on xeric flora

Quaternary glaciations strongly affected the distribution of species from arid and semi-arid environments, as temperature drops were accompanied by strong fluctuations in rainfall. In this study, Ossa and colleagues examined the response of xerophytic species to glacial cycles, determining the genetic patterns and climatic niche of Echinopsis chiloensis var. chiloensis, an endemic columnar cactus of […]

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