Record Details

Differential induction of 3-deoxyanthocyanidin phytoalexins in relation to Colletotrichum falcatum resistance in sugarcane

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Differential induction of 3-deoxyanthocyanidin phytoalexins in relation to Colletotrichum falcatum resistance in sugarcane
Not Available
 
Creator V Ganesh Kumar, R Viswanathan, P Malathi, M Nandakumar, A Ramesh Sundar
 
Subject Phytoalexins, 3-deoxyanthocyanidin, Luteolinidin, Apigeninidin, Arabinosyl-5-O-apigeninidin
 
Description Not Available
Sugarcane secrets a reddish pigment presumed to contain phytoalexin compounds in the stalk tissues in response to infection of Colletotrichum falcatum, causing red rot. To identify the phytoalexin compounds involved in red rot resistance, detailed HPLC analyses were conducted using the phytoalexin standards in a set of sugarcane cultivars varying in red rot resistance, after pathogen inoculation. We found nine different 3-deoxyanthocyanidin phytoalexin compounds, which are differentially induced upon C. falcatum infection in sugarcane varieties with varying degrees of disease resistance. Among the nine compounds, four compounds were identified as luteolinidin, 5-methoxy luteolinidin, apigeninidin and arabinosyl-5-O-apigeninidin. Multifold induction of luteolinidin, apigeninidin and arabinosyl-5-O-apigeninidinin the stalk tissues were recorded in disease resistant cvs Co 93009, BO 91 and Baragua, respectively after pathogen inoculation as compared to the susceptible cv CoC 671. In addition to the known compounds one to three unknown compounds were detected in the resistant cultivars. The susceptible cultivars exhibited a placid induction of phytoalexin compounds after pathogen infections. The results very clearly demonstrated a specific induction of 3-deoxyanthocyanidins in resistant cultivars at a higher level as compared to susceptible cultivars after C. falcatum infection in sugarcane. Total extracts of the induced phytoalexins in the calorimetric assays, also revealed similar results. Probably induction of either luteolinidin or apigeninidin compounds alone or in combination at higher concentrations in the resistant cultivars may enable the effective arrest of pathogen invasion and further development inside the stalk tissues
Not Available
 
Date 2021-08-28T10:00:24Z
2021-08-28T10:00:24Z
2015-09-01
 
Type Research Paper
 
Identifier 15
0972-1525
http://krishi.icar.gov.in/jspui/handle/123456789/60925
 
Language English
 
Relation Not Available;
 
Publisher Springer India