Video Experimental Relacionado
Updated: May 4, 2026

11:02
Use of Arabidopsis eceriferum Mutants to Explore Plant Cuticle Biosynthesis
Published on: June 1, 2008
12.1K
KANADI regula la polaridad de los órganos en la Arabidopsis
R A Kerstetter1, K Bollman, R A Taylor
1University of Pennsylvania, Department of Biology, Plant Science Institute, Philadelphia 19104-6018, USA.
Nature
|June 8, 2001
Resumen
Los alelos mutantes de KANADI (KAN) son esenciales para establecer la identidad abaxial en las hojas y carpelos de Arabidopsis. Esta investigación revela que KAN es KAN.
Área de la Ciencia:
- Biología vegetal Biología vegetal
- Genética del desarrollo genética del desarrollo.
- Biología molecular La biología molecular.
Sus antecedentes:
- Los órganos de las plantas exhiben polaridad a lo largo del eje adaxial-abaxial.
- Las hojas de Arabidopsis muestran características distintas en las superficies adaxiales (tricomas) frente a las superficies abaxiales.
Objetivo del estudio:
- Investigar el papel de los genes KANADI (KAN) en el establecimiento de la polaridad de los órganos de las plantas.
- Para identificar la función de KAN en el desarrollo de la hoja y el carpelo.
Principales métodos:
- Pruebas genéticas para mutantes con polaridad adaxial-abaxial alterada.
- Análisis de los patrones de expresión génica de KAN.
- Estudios de expresión ectópica utilizando el promotor CaMV 35S.
Principales resultados:
- Las mutaciones KANADI resultan en la formación de tricomas abaxiales en las hojas de Arabidopsis.
- Se requiere KAN para especificar la identidad abaxial tanto en hojas como en carpelos.
- KAN codifica un factor de transcripción de la familia GARP localizado en el núcleo.
Conclusiones:
- KANADI juega un papel crucial en el mantenimiento de la identidad abaxial en Arabidopsis.
- KAN también puede estar involucrado en la especificación de la identidad periférica embrionaria.
Videos de Conceptos Relacionados
Transcription
138.2K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
138.2K
Allosteric Proteins-ATCase
4.8K
Binding sites linkages can regulate a protein's function. For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
4.8K
GPCRs Regulate Adenylyl Cylase Activity
6.9K
Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
6.9K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
1.1K
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
1.1K
Instrumentation Amplifier
1.3K
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
1.3K
Transduction
3.0K
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
3.0K

