Video Experimental Relacionado

Updated: Jan 13, 2026

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

Published on: April 17, 2016

JULGI coordina el desarrollo vascular y el patrón de las hojas a través de la regulación no autónoma de células de

Soyoung Park¹, Hyun Seob Cho¹, Seungchul Lee¹

¹Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea.

Nature communications

|January 10, 2026

Resumen

Las plantas vasculares dependen de la coordinación del desarrollo vascular y de las hojas. Los investigadores descubrieron que la proteína JULGI1 (JUL1), originada en las venas de las hojas, regula el patrón de las hojas controlando el procesamiento de microARN y la polaridad de la planta.

Área de la Ciencia:

Biología vegetal
Biología del desarrollo
Genética molecular

Sus antecedentes:

La coordinación entre el desarrollo vascular y de las hojas es crucial para la evolución de las plantas vasculares.
Los mecanismos que integran estos procesos de desarrollo no se comprenden bien.

Objetivo del estudio:

Identificar reguladores clave que integran el desarrollo vascular y de las hojas en Arabidopsis.
Elucidar los mecanismos moleculares subyacentes a esta integración.

Principales métodos:

Identificación de la proteína de unión a ARN JULGI1 (JUL1) en Arabidopsis.
Análisis de la expresión y localización de JUL1 en tejidos de hojas.
Investigación de la interacción de JUL1 con transcritos de pri-MIR165a.
Evaluación del procesamiento de microARN y los niveles de expresión de genes diana.

Principales resultados:

JUL1 se transcribe en las venas de las hojas y funciona en toda la hoja.
JUL1 se une a transcritos de pri-MIR165a en el lado abaxial, inhibiendo el procesamiento mediado por DCL1.
Esto conduce a una reducción de los niveles de miR165/166 y a un aumento de los niveles de transcritos de HD-ZIP III.
JUL1 refuerza la polaridad adaxial-abaxial.

Conclusiones:

JULGI1 (JUL1) actúa como un integrador crucial del desarrollo vascular y de las hojas.
Un mecanismo no autónomo de células que involucra a JUL1 derivado del vascular modula la biogénesis de miRNA.
Este proceso coordina el patrón de las hojas con el desarrollo vascular en Arabidopsis.

Palabras clave:

Arabidopsis JULGI1 JUL1 desarrollo vascular desarrollo de las hojas patrón de las hojas miRNA miR165/166 polaridad de la planta biogénesis de miRNA procesamiento de microARN HD-ZIP III no autónomo de células

Más Videos Relacionados

Imaging Spatial Reorganization of a MAPK Signaling Pathway Using the Tobacco Transient Expression System

Imaging Spatial Reorganization of a MAPK Signaling Pathway Using the Tobacco Transient Expression System

Published on: March 20, 2016

Author Spotlight: Improved Methods for Preparing Transverse Sections and Unrolled Whole Mounts of Maize Leaf Primordia for Fluorescence and Confocal Imaging

Author Spotlight: Improved Methods for Preparing Transverse Sections and Unrolled Whole Mounts of Maize Leaf Primordia for Fluorescence and Confocal Imaging

Published on: September 22, 2023

Videos de Conceptos Relacionados

Morphogenesis

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.

Cells Coordinate Growth and Proliferation

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...

Seedless Vascular Plants

Seedless Vascular Plants

Seedless Vascular Plants Were the First Tall Plants on Earth

Cell Signaling in Plants

Cell Signaling in Plants

Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...

Cell Adhesion in Plants

Cell Adhesion in Plants

Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...

Meristems and Plant Growth

Meristems and Plant Growth

Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.