Record Details

Immunity elicitors for induced resistance against the downy mildew pathogen in pearl millet

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/12186/
https://www.nature.com/articles/s41598-022-07839-4
https://doi.org/10.1038/s41598-022-07839-4
 
Title Immunity elicitors for induced resistance against the downy mildew pathogen in pearl millet
 
Creator Lavanya, S N
Niranjan‑Raj, S
Jadimurthy, R
Sudarsan, S
Srivastava, R K
Tarasatyavati, C
Rajashekara, H
Gupta, V K
 
Subject Pearl Millet
Plant Pathology
 
Description Pearl millet (Pennisetum glaucum (L.) R. Br.) is a globally important cereal whose production is severely constrained by downy mildew caused by Sclerospora graminicola (Sacc.). In this study, immunity eliciting properties of 3,5‑dichloroanthranilic acid (DCA), Cell Wall Glucan (CWG), Lipopolysaccharide (LPS), and Glycinebetaine (GB) was deciphered through enzymatic and protein studies based on
elicitor treatment activated defense mechanisms. Glycinebetaine, LPS, CWS and DCA elicited enzyme activities and gene expression of the defense enzymes, such as β‑1,3‑glucanase, phenylalanine ammonia lyase (PAL), peroxidase (POX), polyphenol oxidase (PPO), lipoxygenase (LOX) and defense protein hydroxyproline‑rich glycoproteins (HRGPs). However, the speed and the extent of elicitation
differed. High levels of enzyme activities and gene expression in elicitor‑treated P. glaucum positively
correlated with the increased downy mildew resistance. A very rapid and large changes in elicitor-treated seedlings, in contrast to the delayed, smaller changes in the untreated susceptible control seedlings suggests that the rate and magnitude of defense gene expression are important for effective manifestation of defense against pathogen. As compared to other elicitors and control, GB promoted
increase in enzyme activities and gene expression, implicating that GB is a promising elicitor of downy
mildew resistance in P. glaucum.
 
Publisher Nature Publishing Group
 
Date 2022-03-08
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/12186/1/Scientific%20Reports_12_01-17_2022.pdf
Lavanya, S N and Niranjan‑Raj, S and Jadimurthy, R and Sudarsan, S and Srivastava, R K and Tarasatyavati, C and Rajashekara, H and Gupta, V K (2022) Immunity elicitors for induced resistance against the downy mildew pathogen in pearl millet. Scientific Reports (TSI), 12. 01-17. ISSN 2045-2322