Chenopodium murale hairy root exudates inhibit growth and induce oxidative stress in collard greens (Brassica oleracea L. var. acephala)
2015
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Чланак у часопису (Објављена верзија)
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© 2015 Institute of Botany and Botanical Garden Jevremovac, Belgrade
Метаподаци
Приказ свих података о документуАпстракт:
Goosefoot (Chenopodium murale L.) is a cosmopolitan weed species whose root produces substances
with allelopathic effects to various plant species, including agricultural ones. To investigate the
allelopathic effect of C. murale on vegetable plant collard greens (Brassica oleracea L. var. acephala),
the sterilized seeds of collard greens were treated with liquid nutrient medium in which C. murale
hairy root clone R5 was grown for 4 weeks and which contained its exudates. Results indicated that
final germination rate was not affected by R5 while the growth and development of collard greens
seedlings were significantly inhibited. The roots were more affected than shoots. Comparing to the
control, seedlings treated with R5 had reduced number of roots per seedling (27%), root length
(33%) and root fresh weight (59%). Further, R5 led to the seedlings bending, loss of chlorophyll in
the leaves, root necrosis and finally seedlings decay, indicating the ultimate lethal effect of C. murale
allelochemicals. The seedling growth inhibition was accompanied with alteration in antioxidant
enzymes activities illustrated by increased peroxidase (POD), superoxide dismutase (SOD) and
catalase (CAT) activity in shoots and emphasized CAT and decreased SOD activity in roots. The
results could be contributed to the dissemination of knowledge about allelopathic influence of C.
murale on cultivated plants and can be helpful in determining the mode of action against this weed
species to protect collard greens plants