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Inhibition of Seedling Growth in Giant Mimosa and Reduction of Mitotic Activity in Onion Root Tips Caused by Cyanobacterial Extracts
Paper Type  |
Contributed Paper |
Title |
Inhibition of Seedling Growth in Giant Mimosa and Reduction of Mitotic Activity in Onion Root Tips Caused by Cyanobacterial Extracts |
Author |
Siriphan Sukkhaeng, Nuttha Sanevas, Srisom Suwanwong* |
Email |
fscisss@ku.ac.th |
|
Abstract: Phytotoxicities of crude extracts from four cyanobacteria, Nostoc sp., Scytonema sp., Lyngbya sp.1, and Lyngbya sp.2, were investigated with seedling growth bioassays. The results show all extracts did not affect seed germination, but caused root and shoot growth suppression. The extract from Nostoc sp. was found to inhibit root and shoot growth with the lowest half-maximum inhibitory concentration. Only Nostoc sp. extract caused obvious root crack formation when exposed to high concentrations of the extract. The extract also inhibited root cell division by the reduction of the mitotic index and the number of cells in all mitotic phases. Crude extract from Nostoc sp. is the most effective in root growth inhibition and root cell damage. Decrease of root length is probably caused by the inhibition of cell division which blocks the cell mitosis.
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Start & End Page |
1150 - 1156 |
Received Date |
2012-03-20 |
Revised Date |
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Accepted Date |
2012-11-27 |
Full Text |
Download |
Keyword |
cyanobacterial extract, Nostoc, Scytonema, Lyngbya, root growth inhibition, , mitotic index. |
Volume |
Vol.41 No.5/1 (OCTOBER 2014) |
DOI |
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Citation |
Sukkhaeng S., Sanevas N. and Suwanwong* S., Inhibition of Seedling Growth in Giant Mimosa and Reduction of Mitotic Activity in Onion Root Tips Caused by Cyanobacterial Extracts, Chiang Mai Journal of Science, 2014; 41(5/1): 1150-1156. |
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