Biostimulants derived from red seaweed stimulate the plant defence mechanism in rice against Magnaporthe oryzae

Seaweed extracts contain many bio-elicitors that can greatly improve natural plant immunity, so stimulating plant immunity with these formulations is a sustainable approach. The red seaweed ( Kappaphycus sp. and Eucheuma sp.)–derived biostimulants (LBS6 and LBD1) were tested for their ability to pro...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied phycology 2022-02, Vol.34 (1), p.659-665
Main Authors: Sahana, Banakar N., PrasannaKumar, M. K., Mahesh, H. B., Buela Parivallal, P., Puneeth, M. E., Gautam, Chirag, Girish, T. R., Nori, Sailaja, Suryanarayan, Shrikumar
Format: Article
Language:English
Subjects:
Algae
Ammonia
Biomedical and Life Sciences
Biostimulants
Chitinase
Defence mechanisms
Dipping
Disease resistance
Disease tolerance
Diseases
Ecology
Enzymes
Foliar applications
Freshwater & Marine Ecology
Fungi
Genes
Greenhouses
Immunity
Inoculation
Life Sciences
Magnaporthe oryzae
Pathogens
Peroxidase
Phenolic compounds
Phenols
Phenylalanine
Plant immunity
Plant Physiology
Plant Sciences
Polyphenol oxidase
Priming
Rice
Rice blast
Seaweeds
Transcription
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Seaweed extracts contain many bio-elicitors that can greatly improve natural plant immunity, so stimulating plant immunity with these formulations is a sustainable approach. The red seaweed ( Kappaphycus sp. and Eucheuma sp.)–derived biostimulants (LBS6 and LBD1) were tested for their ability to protect rice against fungal blast disease. Compared to non-primed plants, LBD-1 primed and challenged inoculated plants had substantially higher levels of defence-related enzymes such as phenylalanine ammonia lyase, chitinase, peroxidase, polyphenol oxidase and phenolic content. In primed and Magnaporthe oryzae isolate MG-01 challenge–inoculated plants, altered transcript levels of various defence genes such as OsPR-1 , PAL-6 , PR1-5 and PR-15 were observed. Disease tolerance to the blast pathogen was tested in glasshouse conditions using the foliar application or root dipping with various concentrations of LBD-1. Both approaches significantly decreased disease severity, but the combined spray and root dipping was more effective than either spray or root dipping alone. These findings indicate that priming rice plants with seaweed biostimulant induces resistance to blast fungus, most likely by inducing defence-related genes and enzymes.
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-021-02627-5