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Physiological impact of Zinc nanoparticle on germination of rice (Oryza sativa L) seed
journal contribution
posted on 2017-10-21, 07:29 authored by Upadhyaya H, Roy H, Shome S, Tewari S, Bhattacharya MK, Panda SKNanoparticles affects growth and development of Plant. Zinc is an
important micronutrient that regulates various physiological responses
in plant. Application of nanoparticles for modulating plants
physiological response is a recent practice. Zinc nanoparticles has been
widely used in industry for several decades. However, no significant
work had been made on its potential use in agriculture. Understanding
physiological effect of Zn NP on rice seed germination could suggest the
basis for its prospective application in agriculture to improve plant
growth. In the present experiment effect of Zn NP was studied in
Kmj-6-1-1 which is a commonly growing rice cultivar of Karimganj
district of Assam, India. An exposure to Zn NP (0 mg/L, 5mg/L,10mg/L,
15mg/L, 20mg/L & 50mg/L) caused significant changes in radicle and
plumule length , mass ( fresh & dry mass) and seed moisture content
in rice. Antioxidant enzymes like guaiacol peroxidase (GPx), catalase
(CAT), superoxide dismutase (SOD) and gluthathione reductase (GR) also
increased due to ZnNP treatment. This suggest that Zn NP may
significantly alters antioxidant metabolism during rice seed
germination. In conclusion, Zn NP protected rice plants from ROS damage
by improving levels of antioxidant enzyme activities during germination.
As a consequence the Zn NP treated seeds, showed better potential for
germination. Further, genomic analysis of germinating rice seeds are
needed to elucidate the molecular mechanisms by which Zn NP modulates
germination process in rice.
