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Elicitors, SA and MJ enhance carotenoids and tocopherol biosynthesis and expression of antioxidant related genes in Moringa oleifera Lam. leaves.

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Relation http://ir.cftri.com/11653/
http://dx.doi.org/10.1007/s11738-014-1640-7
 
Title Elicitors, SA and MJ enhance carotenoids and tocopherol
biosynthesis and expression of antioxidant related genes
in Moringa oleifera Lam. leaves.
 
Creator Saini, R. K.
Harish Prashanth, K. V.
Nandini, P. Shetty
Giridhar, P.
 
Subject 23 Vegetables
32 Antioxidants
 
Description Moringa oleifera Lam. leaves are rich source of
carotenoids (provitamin A) and a-tocopherol (vitamin E),
and there is a scope for their further enhancement, through
elicitor mediation, thereby a great potential for addressing
these vitamins deficiency. In the present study, we report
the efficacy of foliar administration of biotic elicitors,
carboxy-methyl chitosan and chitosan, and signaling molecules,
methyl jasmonate (MJ) and salicylic acid (SA) for
enhancement of major carotenoids and a-tocopherol.
Highest a-tocopherol content of 49.7 mg/100 g FW was
recorded upon foliar application of 0.1 mM SA after 24 h
of treatment, which represented a 187.5 % increase in
comparison to the untreated control. Similarly, a maximum
of 52.6 mg/100 g FW lutein, and 21.8 mg/100 g FW bcarotene
content were observed in leaves after 24 h of
treatment with MJ, which represented a 54.0 and 20.3 %
increase in comparison to the untreated control, respectively.
Among the major genes of carotenoid biosynthetic
pathway, the expression of lycopene b-cyclase (LCY-b)
was maximum influenced after treatment with elicitors and
signaling molecules, compared to phytoene synthase and
phytoene desaturase, suggesting the LCY-b-mediated
enhancement in the production of b-carotene in elicitor
treated M. oleifera leaves. Enhanced production of atocopherol
under respective elicitor treatment was further
supported by 2.0–2.7 fold up-regulation of c-tocopherol
methyl transferase, compared to untreated control. This is
the first report on elicitor-mediated enhanced production of
tocopherol and carotenoids in foliage of economically
important food plant.
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/11653/1/Acta%20Physiologiae%20Plantarum%20October%202014%2C%20Volume%2036%2C%20Issue%2010%2C%20pp%202695-2704.pdf
Saini, R. K. and Harish Prashanth, K. V. and Nandini, P. Shetty and Giridhar, P. (2014) Elicitors, SA and MJ enhance carotenoids and tocopherol biosynthesis and expression of antioxidant related genes in Moringa oleifera Lam. leaves. Acta Physiologiae Plantarum, 36 (10). pp. 2695-2704.