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Application of ultra-weak photon emission measurements in agriculture

Paper ID Volume ID Publish Year Pages File Format Full-Text
30203 44464 2014 9 PDF Available
Title
Application of ultra-weak photon emission measurements in agriculture
Abstract

•UPE applications were developed to overcome threats in agriculture; disease and weeds.•Elicitor-Responsive Photon Emission is a part of MAMP-triggered defense response.•ERPE-based system is capable of screening for broad spectrum of plant activators.•P450 activity-related UPE can be used to judge the herbicide resistance of weeds.

Here we report our two applications of ultra-weak photon emission (UPE) measurements in agriculture. One is to find new types of agrochemicals that potentiate plants’ defense, so-called “plant activator”. We first analyzed the relation between plant defense and Elicitor-Responsive Photon Emission (ERPE) using a combination of rice cells and a chitin elicitor. Pharmacological analyses clarified that ERPE was generated as a part of the chitin elicitor-responsive defense in close relation with the generation of reactive oxygen species (ROS). Then we successfully detected the activity of plant activators as the potentiation of ERPE, and developed a new screening system for plant activators based on this principle. Another UPE application is to distinguish herbicide-resistant weeds from susceptible ones by measuring UPE in weeds. In our study, it was revealed that the weed biotypes resistant to sulfonylurea (SU) herbicides, one of the major herbicide groups, showed stronger UPE than susceptible ones after an SU herbicide treatment. By further analysis with a pharmacological and RNAi study, we found that the detoxifying enzyme P450s contributed to the UPE increase in SU herbicide resistant weeds. It is considered that weeds resistant to herbicides other than SU might also be able to be distinguished from susceptible ones by UPE measurement, as long as the herbicides are subject to detoxification by P450s.

Keywords
Ultra-weak photon emission; Plant defense; Elicitor-responsive photon emission; Herbicide resistance, P450
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 139, 5 October 2014, Pages 54–62
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