Heat Shock Stress Causes Stage-specific Male Sterility in Arabidopsis thaliana |
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Authors: | Sang Yeol Kim Choo Bong Hong Ilha Lee |
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Institution: | (1) School of Biological Sciences, Seoul National University, Seoul 151–742, Korea, KR;(2) Plant Metabolism Research Center, Kyung Hee University, Suwon 449–701, Korea, KR |
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Abstract: | Arabidopsis during flower development, floral organs such as sepals, petals, stamens, and carpels developed normally. However, the development
of pollen inside the anther was disrupted in a stage-specific manner, with floral stage 9 primordia failing to produce any
pollen grains. Morphological analyses suggested that heat shock causes a failure of separation of pollen mother cells followed
by microspore differentiation and/or inhibition of male meiotic processes. Heat shock also caused sterility in floral stage
12 flowers but the sterility was due to the failure of pollen release from the pollen sacs.
Received 12 December 2000/ Accepted in revised form 4 April 2001 |
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Keywords: | : Flower development Heat shock Male sterility |
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