当前位置： SCI文献检索 > ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY期刊下所有文献 > Differential growth and metabolic responses induced by nano-scale zero valent iron in germinating seeds and seedlings of Oryza sativa L. cv. Swarna.

Differential growth and metabolic responses induced by nano-scale zero valent iron in germinating seeds and seedlings of Oryza sativa L. cv. Swarna.

Abstract：

:Since development of antioxidant defence system is high energy demanding event, innate defence system and stress tolerance of plant is strictly governed by plant age. This study is aimed towards evaluating variation of tolerance in germinating seeds and seedlings of Oryza sativa L. cv. Swarna against nano-scale zero valent iron (nZVI). A comparative study of several physiological and biochemical parameters have been carried out among 2 distinct plant groups, Group I treated with variable concentrations of nZVI (50, 100, 150 and 200 mg L-1) during germination and Group II treated with similar nZVI doses on 7th day after germination. Upon treatment with higher nZVI concentrations, Group I seedlings showed susceptibility towards oxidative stress while Group II seedlings showed tolerance against these higher doses of nZVI. Significant growth enhancement was observed upon treatment with 50-150 mg L-1 nZVI, since up-regulation of plant's endogenous antioxidant system protected relatively aged Group II seedlings from oxidative damages. Hierarchical clustering based on overall physiological, biochemical and stress parameters confirmed that in Group I seedlings 100-200 mg L-1 nZVI treatments were toxic where as in Group II seedlings 50-150 mg L-1 nZVI treatments showed growth promoting effects. This differential response is due to developmental stage related resistance in plants.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Guha T,Gopal G,Chatterjee R,Mukherjee A,Kundu R

doi

10.1016/j.ecoenv.2020.111104

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

111104

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(20)30943-X

journal_volume

204

pub_type

杂志文章

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