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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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Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.

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Related Experiment Video

Updated: Jun 6, 2026

Reconstructing Terrestrial Paleoclimate and Paleoecology with Fossil Leaves Using Digital Leaf Physiognomy and Leaf Mass Per Area

Reconstructing Terrestrial Paleoclimate and Paleoecology with Fossil Leaves Using Digital Leaf Physiognomy and Leaf Mass Per Area

Published on: October 25, 2024

LSD: a leaf senescence database.

Xiaochuan Liu¹, Zhonghai Li, Zhiqiang Jiang

¹College of Life Sciences, National Laboratory of Protein Engineering and Plant Genetic Engineering and Center for Bioinformatics, Peking University, Beijing 100871, PR China.

Nucleic Acids Research

|November 25, 2010

Summary

This summary is machine-generated.

Researchers created the Leaf Senescence Database (LSD) with 1145 senescence-associated genes (SAGs) from 21 species. This comprehensive resource aids plant aging research and comparative studies.

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Cell Specific Analysis of Arabidopsis Leaves Using Fluorescence Activated Cell Sorting

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Published on: October 4, 2012

Area of Science:

Plant Biology
Genomics
Bioinformatics

Background:

Leaf senescence is a crucial developmental process in plants.
Understanding the genetic basis of leaf senescence is vital for crop improvement.

Purpose of the Study:

To develop a comprehensive database of senescence-associated genes (SAGs).
To facilitate systems biology and comparative studies on plant aging.

Main Methods:

Extensive literature survey to identify SAGs.
Manual and computational annotation of SAGs.
Integration of a bioinformatics analysis platform (WebLab).

Main Results:

Developed the Leaf Senescence Database (LSD) with 1145 SAGs from 21 species.
SAGs classified by function and mutated phenotypes.
Database includes literature, mutants, phenotypes, expression profiles, miRNA interactions, and orthologs.
WebLab platform for sequence analysis and downloadable SAG sequences.

Conclusions:

LSD is the most comprehensive plant senescence database to date.
Facilitates systems biology research and comparative studies on plant aging.