2024年12月30日 · Root hairs in Arabidopsis are formed from specialized hair (H) cells, which are situated in the intercellular spaces between two underlying cortical cells. In contrast, non-hair (N) cells are positioned directly above a single cortical cell (Castillo-Jimenez et al. 2023; Mutanwad et al. 2024; Retzer and Weckwerth 2021).

2022年11月1日 · Using a set of newly developed imaging experiments, we revealed that root hair shank expansion can substantially contribute to total root hair growth. Root hairs are tubular extensions of...

2022年10月27日 · We identified events of substantial shank-localized cell wall expansion along the polar growth axis of Arabidopsis root hairs using morphometric analysis with quantum dots. These regions...

In other species, such as Arabidopsis, only specific short epidermal cells have the potential to become root hairs. In the well-established model of root hair development in Arabidopsis, the fate of root hair cells is determined by the position of epidermal cells (Datta et …

2014年6月25日 · Root hair specification in Arabidopsis is determined by position-dependent signaling and molecular feedback loops causing differential accumulation of a WD-bHLH-Myb transcriptional complex. The initiation of root hairs is dependent on the RHD6 bHLH gene family and auxin to define the site of outgrowth.

2024年11月18日 · We report that Arabidopsis constitutive photomorphogenic 1 (COP1) integrates ethylene and light signaling to mediate RH development. Darkness suppresses RH development largely through COP1. COP1 inhibits both cell fate determination of trichoblast and tip growth of RHs based on pharmacological, genetic, and physiological analyses.

2021年10月15日 · Root hair formation in Arabidopsis thaliana is a well-established model system for epidermal patterning and morphogenesis in plants. Over the last decades, many underlying regulatory genes and well-established networks have been identified by thorough genetic and molecular analysis.

4 天之前 · Root hair (RH) cells can elongate to several hundred times their initial size, and are an ideal model system for investigating cell size control. ... Surprisingly, a low-temperature condition of 10°C causes increased RH growth in Arabidopsis and in several monocots, even when the development of the rest of the plant is halted. Previously, we ...

Roots hairs are cylindrical extensions of root epidermal cells that are important for acquisition of nutrients, microbe interactions, and plant anchorage. The molecular mechanisms involved in the specification, differentiation, and physiology of root hairs in Arabidopsis are reviewed here.

2018年11月2日 · Here we show that phosphatidylinositol-3,5-bisphosphate (PtdIns (3,5)P 2), the enzymatic product of FORMATION OF APLOID AND BINUCLEATE CELLS 1 (FAB1), is involved in the hardening of the shank in...