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Effects of elevated pressure on rate of photosynthesis during plant growth

Paper ID Volume ID Publish Year Pages File Format Full-Text
23363 43439 2013 7 PDF Available
Title
Effects of elevated pressure on rate of photosynthesis during plant growth
Abstract

•The aim of this study is to investigate the effects of an artificially controlled environment, particularly elevated pressure, on net photosynthesis and respiration during plant growth.•The results clearly showed that rate of respiration linearly decreased with an increase in total pressure at a high humidity.•The amount of respiration linearly decreased with an increase in total pressure up to 0.2 MPa, and increased with an increase in total pressure from 0.3 to 0.5 MPa at a low humidity.•The rate of net photosynthesis linearly decreased with an increase in ambient pressure.•The amount of net photosynthesis was clearly increased up to 1.6 fold with an increase in pressure under elevated pressure and a high partial pressure of CO2.

The aim of this study is to investigate the effects of an artificially controlled environment, particularly elevated total pressure, on net photosynthesis and respiration during plant growth. Pressure directly affects not only cells and organelles in leaves but also the diffusion coefficients and degrees of solubility of CO2 and O2. In this study, the effects of elevated total pressure on the rates of net photosynthesis and respiration of a model plant, Arabidopsis thaliana, were investigated in a chamber that newly developed in this study to control the total pressure. The results clearly showed that the rate of respiration decreased linearly with increasing total pressure at a high humidity. The rate of respiration decreased linearly with increasing total pressure up to 0.2 MPa, and increased with increasing total pressure from 0.3 to 0.5 MPa at a low humidity. The rate of net photosynthesis decreased linearly with increasing total pressure under a constant partial pressure of CO2 at 40 Pa. On the other hand, the rate of net photosynthesis was clearly increased by up to 1.6-fold with increasing total pressure and partial pressure of CO2.

Keywords
Elevated total pressure; Plant growth chamber; Biomass; Photosynthesis; Respiration; Arabidopsis thaliana
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 168, Issue 2, 20 October 2013, Pages 135–141
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us