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Elevated CO2 influences host plant defense response in chickpea against Helicoverpa armigera

OAR@ICRISAT

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Field Value
 
Relation http://oar.icrisat.org/9377/
http://dx.doi.org/10.1007/s11829-016-9422-3
10.1007/s11829-016-9422-3
 
Title Elevated CO2 influences host plant defense response in chickpea
against Helicoverpa armigera
 
Creator Sharma, H C
War, A R
Pathania, M
Sharma, S P
Akbar, S M D
Munghate, R S
 
Subject Chickpea
Entomology
Climate change
 
Description Global atmospheric concentration of CO2 is
likely to increase from 350 to 750 ppm over the next
100 years. The present studies were undertaken to understand
the effects of elevated CO2 on enzymatic activity and
secondary metabolites in chickpea in relation to expression
of resistance to pod borer, Helicoverpa armigera. Fifteenday-
old chickpea plants [ICCL 86111—resistant and JG
11—commercial cultivar] grown in the greenhouse were
transferred to open-top chambers (OTC) and kept under
350, 550 and 750 ppm of CO2. Twenty neonates of H.
armigera were released on each plant at 7 days after
shifting the pots to the OTCs. Un-infested plants were
maintained as controls. After 7 days of infestation, the
activities of defensive enzymes [peroxidase (POD),
polyphenol oxidase (PPO), phenylalanine ammonia lyase
(PAL) and tyrosine ammonia lyase (TAL)] and amounts of
total phenols and condensed tannins increased with an
increase in CO2 concentration in chickpea. The nitrogen
balance index was greater in plants kept at 350 ppm CO2
than in plants kept under ambient conditions. The H.
armigera-infested plants had higher H2O2 content;
amounts of oxalic and malic acids were greater at 750 ppm
CO2 than at 350 ppm CO2. Plant damage was greater at
350 ppm than at 550 and 750 ppm CO2. This information
will be useful for understanding effects of increased levels
of CO2 on expression of resistance to insect pests to
develop strategies to mitigate the effects of climate change.
 
Publisher Springer Netherlands
 
Date 2016-03
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9377/1/Chickpea%20CO2%20Heli%20HPR%2016.pdf
Sharma, H C and War, A R and Pathania, M and Sharma, S P and Akbar, S M D and Munghate, R S (2016) Elevated CO2 influences host plant defense response in chickpea against Helicoverpa armigera. Arthropod-Plant Interactions. 01-11. ISSN 1872-8847