文章基本信息

标题：Plastid control of abaxial-adaxial patterning
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作者：Eduardo Mateo-Bonmatí ; Rubén Casanova-Sáez ; Víctor Quesada 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep15975
出版社：Springer Nature
摘要：Translational regulation, exerted by the cytosolic ribosome, has been shown to participate in the establishment of abaxial-adaxial polarity in Arabidopsis thaliana : many hypomorphic and null alleles of genes encoding proteins of the cytosolic ribosome enhance the leaf polarity defects of asymmetric leaves1 ( as1 ) and as2 mutants. Here, we report the identification of the SCABRA1 ( SCA1 ) nuclear gene, whose loss-of-function mutations also enhance the polarity defects of the as2 mutants. In striking contrast to other previously known enhancers of the phenotypes caused by the as1 and as2 mutations, we found that SCA1 encodes a plastid-type ribosomal protein that functions as a structural component of the 70S plastid ribosome and, therefore, its role in abaxial-adaxial patterning was not expected.