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Size and/or growth engineering by modulation of the interaction between calmodulin, and brassinosteroid biosynthetic enzymes and orthologs therof
Size and/or growth engineering by modulation of the interaction between calmodulin, and brassinosteroid biosynthetic enzymes and orthologs therof
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机译:通过调节钙调蛋白与油菜素甾体生物合成酶和直向同源物之间的相互作用来进行大小和/或生长工程
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摘要
Particular aspects show that DWF1 is a Ca2+/calmodulin-binding protein, and this binding is critical for function. Molecular/genetic analysis using site-directed and deletion mutants revealed that loss of calmodulin binding abolished the function of DWF1 in planta, whereas partial loss of calmodulin binding resulted in a partial dwarf phenotype in complementation studies, providing direct proof that Ca2+/calmodulin-mediated signalling has a critical role in controlling the DWF1 function. Furthermore, DWF1 orthologues from other plants have a similar Ca2+/calmodulin-binding domain, indicating that Ca2+/calmodulin regulation of DWF1 and its homologues is common, and broadly applicable in plants. Methods for generating size-engineered crops are provided by altering the Ca2+/calmodulin-binding property of their DWF1 orthologues. Likewise, according to additional aspects, DWF4, DWF5 and CPD were also shown to be Ca2+/calmodulin-binding proteins, and can likewise be used for generating size-engineered crops by altering the Ca2+/calmodulin-binding property of their orthologues in a variety of plants, including crop plants.
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