Subterms
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
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
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
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
Contractile roots require specific anatomical adaptation of the root base, with less-lignified & less-suberized tissues than in the subapical root. More
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
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
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