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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
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Related Experiment Video

Updated: Apr 1, 2026

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

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MaizeGDB update: new tools, data and interface for the maize model organism database.

Carson M Andorf1, Ethalinda K Cannon2, John L Portwood3

  • 1USDA-ARS Corn Insects and Crop Genetics Research Unit, Iowa State University, Ames, IA 50011, USA Department of Computer Science, Iowa State University, Ames, IA 50011, USA carson.andorf@ars.usda.gov.

Nucleic Acids Research
|October 4, 2015
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Summary

MaizeGDB, a vital resource for Zea mays researchers, has been significantly updated with new data types, tools, and a modern interface. This enhances its role as a community-oriented informatics service for maize genetics and genomics.

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Area of Science:

  • Plant Science
  • Bioinformatics
  • Genomics

Background:

  • MaizeGDB has served the maize research community for over 25 years.
  • Previous versions (MaizeDB, ZmDB) evolved, with MaizeGDB becoming sequence-driven.
  • The existing infrastructure and interface had not kept pace with research needs.

Purpose of the Study:

  • To update and enhance the MaizeGDB resource.
  • To incorporate new data types and improve user accessibility.
  • To provide continued informatics support for the maize research community.

Main Methods:

  • Reorganization of existing data.
  • Upgrading hardware and infrastructure.
  • Incorporating new data types (diversity, expression, gene models, pathways).
  • Developing and deploying a modern interface and new tools.

Main Results:

  • A significantly updated MaizeGDB resource is now available.
  • The new interface and infrastructure support diverse maize datasets.
  • Enhanced tools and data types cater to evolving research demands.

Conclusions:

  • The updated MaizeGDB provides a robust, community-oriented informatics service.
  • It supports maize genetics, genomics, and breeding research.
  • MaizeGDB continues to be a central hub for Zea mays research data and community activities.