Entries by Alecia Biel

CIRCADIAN CLOCK ASSOICATED 1 (CCA1) and the circadian control of stomatal aperture

How do plants ‘decide’ how to respond to so many conflicting stimuli? What has the final say in stomatal aperture control? Hassidium et al. investigate the role of the oscillator gene CIRCADIAN CLOCK ASSOICATED 1 (CCA1) during stomatal opening and determined if CCA1 is responsive to other stimuli. Overexpression of CCA1 specifically in guard cells […]

ABA-induced reactive oxygen species are modulated by flavonols to control stomata aperture

Much of our knowledge concerning ABA-induced stomatal closure comes from genetic models such as Arabidopsis and Vicia faba. Watkins et al. explore the mechanism of ROS production in this abiotic stress pathway in an important agricultural crop: tomatoes (Solanum lycopersicum). Specifically, they are interested in the role of flavonoids in guard cell dynamics of S. […]

Review: Balancing immunity and yield in crop plants

During pathogen invasion, plant resources are diverted from further growth to activation of plant immune response. This review focuses on the recent advances in understanding the complex relationship between immunity regulation and yield production in the model monocot crop rice (Oryza sativa). Many defense-response hormone signaling pathways are discussed, including salicylic acid (SA), brassinosteroid, jasmonates, […]

Review: Outer, inner and planar polarity in the Arabidopsis root

Despite vast differences across all living organisms, most eukaryotes display some form of cellular polarity which enables them to carry out specialized functions. The coordination of cell polarity within a single tissue layer is known as planar polarity. Nakamura and Grebe highlight the unique execution of planar polarity in Arabidopsis root cells. Setting the stage […]

An even pattern of xylan substitution is critical for interaction with cellulose in plant cell walls

Plant cell wall architecture is a very complex specific design and the interaction between xylan and cellulose is believed to be that way too. Grantham et al. reveal the details of the association between xylan and cellulose using mass spectrometry and NMR in Arabidopsis. ESKIMO1 (ESK1) is a xylan-specific O-acetyltransferase, responsible for adding most of […]