2021年7月13日 · When roots face a high-salinity area, high salinity initiates clathrin-mediated PIN2 internalization, resulting in a reduction of PIN2 abundance at the plasma membrane. Through this mechanism, auxin accumulates at the side that faces low-salinity conditions and the roots bend away from the high-salinity area.

2024年11月15日 · Ubiquitinated PIN2 recognition signals sorting via Late Endosomes (LE)/Multivesicular Body, mediated by the ENDOSOMAL SORTING COMPLEXES REQUIRED FOR TRANSPORT machinery and modulated by elements...

2021年12月9日 · PIN2 is apically localized (shoot-ward) in the epidermis whereas PIN2 in young cortex has basal localization (reviewed in Feraru & Friml, 2008; Armengot et al., 2016). Hence, PIN localization is an excellent model for investigating cell polarity mechanisms.

2020年3月9日 · Meanwhile, COP1-mediated light signaling modulates the expression and intracellular distribution of auxin transporters (PIN1 and PIN2) to coordinate shoot and root growth. (B) HY5-mediated light signaling regulates nitrogen uptake, the balance of C and N, and the expression of auxin transporters to regulate shoot and root growth.

2024年9月4日 · Genetic analysis revealed that Arabidopsis rowy1 single mutants and higher-order rowy1 rowy2 rowy3 triple mutants presented a wavy root growth phenotype. Cell biological experiments revealed that...

2025年2月5日 · This study demonstrated that a PIN2-based transient polar auxin transport, through a file of elongated marginal cells (MCs), in the borders of cotyledons, underpins the formation of an auxin ...

2015年1月20日 · PIN proteins direct polar auxin transport on account of their asymmetric subcellular localizations. In this review, we provide an overview of the multiple developmental roles of PIN proteins, including the atypical endoplasmic reticulum-localized members of the family, and look at the family from an evolutionary perspective.

2011年7月20日 · Over-expression of OsPIN2 enhanced auxin transport from shoots to roots, but did not alter the polar auxin pattern in the roots. Transgenic plants were less sensitive to N - 1 -naphthylphthalamic acid, an auxin transport inhibitor, than WT in their root growth.

2023年12月1日 · In brief, most PINs in the Arabidopsis root exhibit basal (rootward) localization in the stele (PIN1, PIN3, PIN4, and PIN7) and cortex cells (PIN2). However, in the epidermis and lateral root cap, PIN2 is apically localized (shootward), while PIN3 shows lateral localization in the pericycle cells and non-polar distribution in columella cells [ 8 ].

Overall, these results suggest that B deprivation not only enhances auxin biosynthesis in shoots by elevating the expression levels of auxin biosynthesis-related genes but also promotes the polar auxin transport from shoots to roots by upregulating the gene expression levels of PIN2/3/4, as well as restraining the endocytosis of PIN2/3/4 carrier...