Related Experiment Video
Updated: Feb 16, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
A new mechanistic understanding of light-limitation in the seagrass Zostera muelleri
Peter A Davey1, Mathieu Pernice2, Justin Ashworth2
1Climate Change Cluster, University of Technology Sydney, NSW, Australia; Centre for Tropical Water and Aquatic Ecosystem Research (TropWater), James Cook University, Cairns, QLD, Australia.
Abstract:
In this study we investigated the effect of light-limitation (∼20 μmol photons m-2 s-1) on the southern hemisphere seagrass, Zostera muelleri. RNA sequencing, chlorophyll fluorometry and HPLC techniques were used to investigate how the leaf-specific transcriptome drives changes in photosynthesis and photo-pigments in Z. muelleri over 6 days. 1593 (7.51%) genes were differentially expressed on day 2 and 1481 (6.98%) genes were differentially expressed on day 6 of the experiment. Differential gene expression correlated with significant decreases in rETRMax, Ik, an increase in Yi (initial photosynthetic quantum yield of photosystem II), and significant changes in pigment composition. Regulation of carbohydrate metabolism was observed along with evidence that abscisic acid may serve a role in the low-light response of this seagrass. This study provides a novel understanding of how Z. muelleri responds to light-limitation in the marine water column and provides potential molecular markers for future conservation monitoring efforts.
Related Concept Videos
Limiting Reactant
Understanding the Self
The Number e as a Limit
Understanding Self-Concept
Understanding Deception
Understanding Love

