Bedoukian   RussellIPM   RussellIPM   Piezoelectric Micro-Sprayer


Home
Animal Taxa
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References

Abstract

Guide

Alphascents
Pherobio
InsectScience
E-Econex
Counterpart-Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase

« Previous Abstract"Effect of host plant chemistry on genetic differentiation and reduction of gene flow among Anastrepha fraterculus (Diptera: Tephritidae) populations exploiting sympatric, synchronic hosts"    Next AbstractHydrogen peroxide is generated systemically in plant leaves by wounding and systemin via the octadecanoid pathway »

PLoS One


Title:Leaf wound induced ultraweak photon emission is suppressed under anoxic stress: Observations of Spathiphyllum under aerobic and anaerobic conditions using novel in vivo methodology
Author(s):Oros CL; Alves F;
Address:"Information Sciences Department, Graduate School of Operational and Information Sciences, Naval Postgraduate School, Monterey, California, United States of America. Physics Department, Graduate School of Engineering and Applied Sciences, Naval Postgraduate School, Monterey, California, United States of America"
Journal Title:PLoS One
Year:2018
Volume:20180614
Issue:6
Page Number:e0198962 -
DOI: 10.1371/journal.pone.0198962
ISSN/ISBN:1932-6203 (Electronic) 1932-6203 (Linking)
Abstract:"Plants have evolved a variety of means to energetically sense and respond to abiotic and biotic environmental stress. Two typical photochemical signaling responses involve the emission of volatile organic compounds and light. The emission of certain leaf wound volatiles and light are mutually dependent upon oxygen which is subsequently required for the wound-induced lipoxygenase reactions that trigger the formation of fatty acids and hydroperoxides; ultimately leading to photon emission by chlorophyll molecules. A low noise photomultiplier with sensitivity in the visible spectrum (300-720 nm) is used to continuously measure long duration ultraweak photon emission of dark-adapting whole Spathiphyllum leaves (in vivo). Leaves were mechanically wounded after two hours of dark adaptation in aerobic and anaerobic conditions. It was found that (1) nitrogen incubation did not affect the pre-wound basal photocounts; (2) wound induced leaf biophoton emission was significantly suppressed when under anoxic stress; and (3) the aerobic wound induced emission spectra observed was > 650 nm, implicating chlorophyll as the likely emitter. Limitations of the PMT photocathode's radiant sensitivity, however, prevented accurate analysis from 700-720 nm. Further examination of leaf wounding profile photon counts revealed that the pre-wounding basal state (aerobic and anoxic), the anoxic wounding state, and the post-wounding aerobic state statistics all approximate a Poisson distribution. It is additionally observed that aerobic wounding induces two distinct exponential decay events. These observations contribute to the body of plant wound-induced luminescence research and provide a novel methodology to measure this phenomenon in vivo"
Keywords:"Adaptation, Physiological/radiation effects Aerobiosis Anaerobiosis Araceae/metabolism/*physiology/radiation effects Darkness *Photons Plant Leaves/metabolism/*physiology/radiation effects *Stress, Physiological/radiation effects;"
Notes:"MedlineOros, Carl L Alves, Fabio eng Research Support, Non-U.S. Gov't 2018/06/15 PLoS One. 2018 Jun 14; 13(6):e0198962. doi: 10.1371/journal.pone.0198962. eCollection 2018"

 
Back to top
 
Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 22-11-2024