eprintid: 3200
rev_number: 9
eprint_status: archive
userid: 19
dir: disk0/00/00/32/00
datestamp: 2011-10-27 05:54:25
lastmod: 2011-10-27 05:55:19
status_changed: 2011-10-27 05:54:25
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
item_issues_count: 0
creators_name: Kishore, G K
creators_name: Pande, S
creators_name: Podile, A R
icrisatcreators_name: Kishore, G K
icrisatcreators_name: Pande, S
affiliation: ICRISAT(Patancheru)
affiliation: University of Hyderabad(Hyderabad)
country: India
title: Chitin-supplemented foliar application of Serratia marcescens GPS 5 improves control of late leaf spot disease of groundnut by activating defence-related enzymes

ispublished: pub
subjects: s1.3
full_text_status: restricted
keywords: Arachis hypogaea L., biological control, chitinolysis, peanut, Pseudomonas aeruginosa
abstract: Chitinolytic Serratia marcescens GPS 5 and non-chitinolytic Pseudomonas aeruginosa GSE 18, with and without supplementation of chitin, were tested for their ability to activate defence-related enzymes in groundnut leaves. Thirty-day-old groundnut (cv. TMV 2) plants pretreated with GPS 5 and GSE 18 (with and without supplementation of 1% colloidal chitin) were challenge inoculated after 24 h with Phaeoisariopsis personata, the causal agent of late leaf spot (LLS) disease of groundnut. GPS 5 and GSE 18, applied as a prophylactic spray, reduced the lesion frequency by 23% and 67%, respectively, compared with control. Chitin supplementation had no effect on the control of LLS by GSE 18, unlike GPS 5, which upon chitin supplementation reduced the lesion frequency by 64%, compared with chitin alone. In a time course study the activities of chitinase, β-1,3- glucanase, peroxidase and phenylalanine ammonia lyase were determined for the different treatments. There was an enhanced activity of the four defence-related enzymes with all the bacterial treatments when compared with phosphate buffer and colloidal chitin-treated controls. In correlation to disease severity in bacterial treatments, chitin-supplemented GSE 18 was similar to GSE 18, whereas chitin-supplemented GPS 5 was much more effective than GPS 5, in activation of the defence-related enzymes. The high levels of enzyme activities following chitin-supplemented GPS 5 application continued up to the measured 13 days after pathogen inoculation
date: 2005
date_type: published
publication: Journal of Phytopathology
volume: 153
number: 3
publisher: Blackwell Publishing
pagerange: 169-173
refereed: TRUE
issn: 0931-1785
official_url: http://dx.doi.org/10.1111/j.1439-0434.2005.00951.x
related_url_url: http://scholar.google.co.in/scholar?as_q=%22Chitin-supplemented+Foliar+Application+of+Serratia+marcescens+GPS+5+Improves+Control+of+Late+Leaf+Spot+Disease+of+Groundnut+by+Activating+Defence-related+Enzymes%22&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_e
related_url_type: author
citation:   Kishore, G K and Pande, S and Podile, A R  (2005) Chitin-supplemented foliar application of Serratia marcescens GPS 5 improves control of late leaf spot disease of groundnut by activating defence-related enzymes.  Journal of Phytopathology, 153 (3).  pp. 169-173.  ISSN 0931-1785     
document_url: http://oar.icrisat.org/3200/1/JPhytopathology_153_3_169-173_2005.pdf