Mediation of flowering by a calmodulin-dependent protein kinase |
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Authors: | Shuping Liang Xingfen Wang Yingtang Lü Lewis J. Feldman |
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Affiliation: | 1. Key Laboratory of MOE for Plant Developmental Biology, Wuhan University, Wuhan 430072, China 2. Department of Plant and Microbiology, University of California, Berkeley, CA 94720, USA |
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Abstract: | A calmodulin-dependent protein kinase (MCK1) appeared important in regulating flowering in tobacco. The expression of modifiedMCK1 that lacks the C-terminal including calmodulin-binding domain upsets the flowering developmental program, leading to the abortion of flower primordia initiated on the main axis of the plant and, as well, caused the prolongation of the vegetative phase in axillary buds. The abortion process of flowers began first in the developing anthers and subsequently the entire flower senesces. In axillary buds the prolonged vegetative phase was characterized by atypical elongated, narrow, twisted leaves. These results suggested a role for calmodulin-dependent protein kinase homologs in mediating flowering. |
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Keywords: | calmodulin-dependent protein kinase transgenic tobacco flower |
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