Attachment to parents and dependency on someone other than parents in adolescence : Does attachment really regulate interpersonal relationship?

In this study, we investigated the relationship between attachment to parents, dependency on someone other than parents, and independence in adolescence. The subjects were 246 undergraduate students (110 males, 131 females, and 5 unknown). Participants who answered that their dependency was on someone other than their parents were 150 (77 males, 69 females, and 4 unknown). The hierarchical multiple regression analysis indicated that the dependency on someone other than their parents affects independence. In particular, dependency on someone other than parents has a buffering effect between attachment to parents and collaborative interpersonal relationships. Our results suggest that adolescents who have unstable attachments to their parents can be adaptive in their development, if they can request psychological support or obtain a stable and secure dependency object.本稿は第二著者である東山花子(旧姓:尾崎)の卒業論文を加筆修正したものである。本誌の投稿資格の関係で主任指導教員が筆頭著者となって公刊する

Transcriptional repression by MYB3R proteins regulates plant organ growth

In multicellular organisms, temporal and spatial regulation of cell proliferation is central for generating organs with defined sizes and morphologies. For establishing and maintaining the post-mitotic quiescent state during cell differentiation, it is important to repress genes with mitotic functions. We found that three of the Arabidopsis MYB3R transcription factors synergistically maintain G2/M-specific genes repressed in post-mitotic cells and restrict the time window of mitotic gene expression in proliferating cells. The combined mutants of the three repressor-type MYB3R genes displayed long roots, enlarged leaves, embryos, and seeds. Genome-wide chromatin immunoprecipitation revealed that MYB3R3 binds to the promoters of G2/M-specific genes and to E2F target genes. MYB3R3 associates with the repressor-type E2F, E2FC, and the RETINOBLASTOMA RELATED proteins. In contrast, the activator MYB3R4 was in complex with E2FB in proliferating cells. With mass spectrometry and pairwise interaction assays, we identified some of the other conserved components of the multiprotein complexes, known as DREAM/dREAM in human and flies. In plants, these repressor complexes are important for periodic expression during cell cycle and to establish a post-mitotic quiescent state determining organ size