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Expression Characterization of ABCDE Class MADS-Box Genes in IBrassica rapa/I with Different Pistil Types
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Expression Characterization of ABCDE Class MADS-Box Genes in IBrassica rapa/I with Different Pistil Types
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Expression Characterization of ABCDE Class MADS-Box Genes in IBrassica rapa/I with Different Pistil Types
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Journal Article
Expression Characterization of ABCDE Class MADS-Box Genes in IBrassica rapa/I with Different Pistil Types
2023
Overview
MADS-box is a vital transcription factor family that functions in plant growth and development. Apart from APETALA2, all genes in the ABCDE model that explain the molecular mechanism of floral organ development belong to the MADS-box family. Carpel and ovule numbers in plants are essential agronomic traits that determine seed yield, and multilocular siliques have great potential for the development of high-yield varieties of Brassica. In this study, ABCDE genes in the MADS-box family from Brassica rapa were identified and characterized. Their tissue-specific expression patterns in floral organs and their differential expression in different pistil types of B. rapa were revealed by qRT-PCR. A total of 26 ABCDE genes were found to belong to the MADS-box family. Our proposed ABCDE model of B. rapa is consistent with that of Arabidopsis thaliana, indicating that ABCDE genes are functionally conserved. These results of qRT-PCR showed that the expression levels of class C and D genes were significantly different between the wild-type (wt) and tetracarpel (tetrac) mutant of B. rapa. Interestingly, the expression of the homologs of class E genes was imbalanced. Therefore, it is speculated that class C, D, and E genes are involved in developing the carpel and ovule of B. rapa. Our findings reveal the potential for the selection of candidate genes to improve yield traits in Brassica crops.
Publisher
MDPI AG
