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  • Cucurbita pepo cells
    in ,

    Lateral root initiation and formation in Cucurbita pepo: is auxin a key player?

    In most plant species, initiation of lateral roots occurs above the elongation zone. However, in Cucurbitaceae it takes place in the parental root meristem. Ilina et al. investigate the first cellular events leading to lateral root initiation in Cucurbita pepo roots and the participation of auxin in this process. Fluorescent reporters under control of the […] More

  • Root tip
    in ,

    SLAD: Subero-lignified apical deposit in the root tip

    Morphological response of radish (Raphanus sativus, Brassicaceae) roots exposed to toxic concentration of copper (Cu) include many root growth changes. Kováč et al. find that such changes are coupled with the formation of subero-lignified apical deposit (SLAD) very close to the root tip. This unique structure consists of modified cell walls of central cylinder cells […] More

  • Appearance of the endodermis and exodermis.

    Apoplastic barriers in maize lateral roots

    Roots rely on apoplastic barriers for nutrient absorption. However, little is known about the establishment of these barriers within the lateral roots. The branching, permeability of the outer cell layers and differentiation of the endo- and exodermis are studied in primary roots and various laterals of Zea mays under different stress factors of agronomic importance […] More

  • Maize primary root (Zea mays L., hybrid ‘Reduta’) exposed to unilateral treatment by drought (Air) and attached to wet agar-solified MS medium (Agar) on the other side.

    Asymmetrical root development as a reaction to abiotic stresses

    Roots can develop resilience and protective barriers to drought and cadmium-induced (Cd) stress. Líška et al. study the ways in which the vascular tissues of roots develop characteristics to mitigate the effects of local abiotic stressors. They report that contact with air, or with toxic metals such as cadmium, induces an earlier and asymmetrical development […] More

  • Image: Wikimedia Commons.

    Lignin and/or suberin? Lignin!

    For as long as the Casparian strip (CS) – an impervious component of the endodermal cell wall that blocks the passive flow of water and solutes into the vascular tissues of a plant – has been known (discovery credited to Robert Caspary in the mid 1860s), it has been considered to contain lignin and/or suberin. And, […] More

  • Plant cell biology in the frame

    Plant cell biology in the frame!

    Notwithstanding the centuries we’ve spent peering at, poking, prodding and penetrating the inner workings of plant cells with various types of microscopes and decades undertaking investigations at the sub-cellular level, there are still new discoveries to be made. Here are two, united by the theme of cell–cell transport. First, the recent revelation by Deborah Barton […] More