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- Title
Effects of Enhanced Ultraviolet-B Radiation on Chromosomes and Microtubule Arrays in Wheat Roots.
- Authors
Peng Xiang Chen; Huize Chen; Rong Han
- Abstract
Enhanced ultraviolet-B (UV-B) radiation causes chromosomal aberrations and abnormal microtubule arrays in wheat (Triticum aestivum) root cells. Oryzalin induces chromosome doubling through depolymerization of microtubules and results in diploidization. We explored the effect of oryzalin on wheat roots exposed to enhanced UV-B radiation. Treatment with 500 µmol·L-1 oryzalin resulted in chromosome doubling with two equal nuclei. However, exposure to UV-B radiation in combination with oryzalin resulted in two unequal nuclei. The frequency of unequal nuclei caused by treatment with UV-B and oryzalin was higher than that caused by UV-B exposure alone. During the mitotic phase, chromosomal aberrations were indicated to be independent of abnormal microtubule structures. These suggested that chromosomal aberrations caused by enhanced UV-B radiation were not a consequence of abnormal microtubule structures.
- Publication
International Journal of Agriculture & Biology, 2016, Vol 18, Issue 3, p649
- ISSN
1560-8530
- Publication type
Academic Journal
- DOI
10.17957/IJAB/15.0148