Japanese cedar (Cryptomeria japonicaD. Don) is the most important Japanese forest tree, occupying about 44% of artificial forests in Japan, and planted in East Asia, Azores Archipelago, and some islands in the Indian Ocean. Although the huge genome of the species (ca. 11 Gb) with abundant repeat elements might have been an obstacle for genetic analysis, the species is easily propagated by cutting, flowered by plant hormones like gibberellic acid, transformed by agrobacterium, and edited by CRISPR/Cas9. These characteristics ofC. japonicaare preferable to make the species a model conifer for which reference genome sequences are necessary. In this study, we report the first chromosome-level assembly forC. japonica(2n = 22) using a third generation selfed progeny with an estimated homozygosity of 0.96. Young leaf tissue was used to extract high-molecular-weight DNA (>50 kb) for HiFi PacBio long read sequencing and to construct Hi-C/Omni-C library for Illumina short read sequencing. Using the 29× and 26× genome coverage of HiFi and Illumina reads, respectively, de novo assembly resulted in 2,650 contigs (9.1 Gb in total) with N50 contig size of 12.0 Mb. The Hi-C analysis mapped 97% of the nucleotides on the 11 chromosomes. The assembly was verified by comparing with a consensus linkage map of 7,785 markers. The BUSCO analysis confirmed ~91% of conserved genes. Annotations of genes, repeat elements and synteny with other Cupressaceae and Pinaceae species were performed, providing fundamental resources for genomic research of conifers.

With the aging of society, the long-term care insurance system -which includes home modifications to continue living at home- was established in 2000. However, the quality of home modifications has been persistent issue, and effective training is expected to conclusively solve this problem. To this end, the purpose of this study is to clarify the rational for training care managers who plan home modifications. A survey comprising two sets of questionnaires was conducted; one set encompassed is all 62municipalities in Tokyo, whereas the other involved care manager who participated in training program. The results of the first questionnaire showed that, out of 62 municipalities, 9 (14.5%) provided training on home modification, of which 8 (88.9%) provided training on administrative procedures. In one municipality that provided training on practical aspects of home modification, we provide questionnaires to 59 care managers participating in the training. -Lectures on administrative procedures, physical conditions of invalids, and reading drawings were conducted by administrative staff, occupational therapists, and architects, respectively. Afterwards, the participants attended a planning workshop. According to the questionnaire conducted after the workshop, 80.4% of the participants could understand home modifications in the system, 85.5% understood how to modify homes based on the occupants’ symptoms and physical conditions, 81.6% could interpret drawings, 90.2% could plan modifications, and 81.6% found the training useful. These findings indicate that the training of care managers has indeed been effective in actual practice. Improving the quality of home modifications through multidisciplinary cooperation is significant in maintaining home life.

In this paper, we aim to clarify the cause of the difficulty in home modification. The aging society becomes larger where older people have difficulty in living home because of weakened body functions. To maintain quality of life, it is important to modify houses. In Japan, home modification is conducted by care managers, who are originally from nurses, helpers, and so on. However, to modify houses, we hypothesized that it is needed to have knowledge about not only body function but also architecture. Because of this, home modification should be difficult for care managers. For this problem, we aim to clarify the difficulty in home modification. In November 2018, we took part in the teaching course for care managers about home modification and asked care managers the number of home modification they conducted and what they have difficulty in. As a result, we asked for 57 care managers, who have experience as care managers for 39 months in average. Home modification was mainly conducted for setting handrails (four for a care manager in average). It was also revealed that experience of modification for handrails and doors are larger when the experience of care manager becomes longer, but other modification is not the case. The care managers told us that they cannot understand architecture. This result indicates that care managers cannot think of many options for modification because of their little knowledge about architecture. Therefore, it should be needed to combine the architects and care managers for appropriate home modification.