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Role of γ-oryzanol in drought-tolerant and susceptible cultivars of rice (<i>Oryza</i> <i>sativa</i> L.)

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Title Role of γ-oryzanol in drought-tolerant and susceptible cultivars of rice (Oryza sativa L.)
 
Creator Kumar, M S Sujith
Dahuja, Anil
Rai, R D
Walia, Suresh
Tyagi, Aruna
 
Subject Oryza sativa
γ-Oryzanol
RP-HPLC
Drought tolerance
Rice bran oil
 
Description 75-80
Drought-tolerant cultivars and their
phytochemical composition, which has a role in providing drought tolerance are
gaining importance. In this study, rice bran oil and semi-purified oryzanol (SPO)
obtained from five rice (Oryza sativa L.) cultivars,
namely P1401 and PB1 (drought-susceptible) and N22, PNR381 and APO
(drought-tolerant) were analyzed for the γ-oryzanol content, an antioxidant
present in considerable amount in the rice bran. The higher level of γ-oryzanol
and its antioxidant activity was observed in drought-tolerant cultivars (N22,
PNR381 and APO) as compared to drought-susceptible (PB1 and P1401), suggesting
the role of γ-oryzanol in drought tolerance, as antioxidants are known to play
an important role by scavenging free radicals. The total antioxidant activity
of γ-oryzanol might be attributed to 24-methylene cycloartanyl ferulate, a
major component of γ-oryzanol. By enhancing the level of active oryzanol
components identified in this study by genetic and molecular means could impart
increased drought tolerance.
 
Date 2014-03-03T17:49:39Z
2014-03-03T17:49:39Z
2014-02
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://hdl.handle.net/123456789/27290
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJBB Vol.51(1) [February 2014]