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Objective. To explore the imaging diagnostic value of primary solitary bone tumor and tumor-like lesion of iliac crest. Methods. A total of 156 patients with primary solitary bone tumors and tumor-like lesions of the iliac bone treated in our hospital were selected, and the patients were diagnosed by X-ray, CT, and MRI. Sexual analysis of single diagnostic and combined diagnostic value was carried out. Results. Round high-density shadow, soft tissue mass shadow, soft tissue mass, right intestinal tube, and bladder obvious pressure were observed. The detection rates of giant cell tumor of bone, myeloma, osteochondroma, chondroma, eosinophilic granuloma, osteosarcoma, fibrous dysplasia, and Hodgkin lymphoma were 34.6%, 12.8%, 11.5%, 10.3%, 7.7%, 6.4%, 3.8%, and 2.6%, and the differences were statistically significant (P < 005); X-ray, CT, MR single diagnostic comparison, three methods joint diagnostic missed diagnosis rate and misdiagnosis rate, higher detection rate ( P < 0.05 ); combined with X-ray, CT, MR single diagnosis, three methods joint diagnosis sensitivity, specificity, accuracy, statistical significance ( P < 0.05 ); comparison with X-ray, CT, MR single diagnosis, three methods jointly diagnosed positive predictive value, negative predictive value higher, difference statistics significance ( P < 0.05 ); there is a significant difference in the near-end, backbone, and distal detection rate of different bone tumors and tumor lesions, including the humerus and tibia. There is a statistical significance of the detection rate, and the difference is P < 0.05 . Conclusion. X-ray plays an important role in the diagnosis of primary solitary bone tumor and tumor-like lesion of iliac crest and is the first choice in clinical diagnosis. In the diagnosis of tumor disease, range, and soft tissue mass, MRI and CT diagnostic value can provide effective theoretical basis for patient clinical treatment. Therefore, the appropriate diagnostic method should be selected according to the specific situation of the patient, so that the efficiency of the clinical feature is improved.

Lycoris radiata has beautiful bright-red flowers with both medicinal and ornamental value. However, the mechanisms underlying an unusual characteristic of Lycoris radiata, flowering without leaves, remain unclear. In this study, climatic influences, biomass composition, and yearly variations in bulb contents across eight developmental stages of L. radiata were analyzed. Thus, L. radiata summer dormancy was investigated in three dimensions: climate-associated phenology, biomass distribution characteristics, and physiologic bulb changes. The results showed that dormancy was most strongly affected by high ambient temperature, followed by scape development, flowering, leafing out, vigorous leaf growth, flower bud differentiation, flower bud predifferentiation, and leaf maturation. Biomass allocation, bulb contents, oxidoreductase activity, and root activity fluctuated significantly in L. radiata among developmental stages. Relative bulb dry weight was greatest during the dormant period (95.95% of total dry weight) and lowest during vigorous leaf growth (November–December). Root biomass was also significantly greater during dormancy than during flowering, leaf maturation, and flower bud differentiation. Only root biomass during vigorous leaf growth was greater than root biomass during dormancy. However, in dormant bulbs, soluble sugar content, soluble protein content, root activity, superoxide dismutase (SOD) activity, and peroxidase (POD) activity decreased. Thus, summer dormancy in L. radiata only constitutes a morphologic dormancy of the aboveground plant; the bulb and root remain physiologically active. The results suggest that L. radiata is sensitive to both ambient temperature and light, and that summer dormancy is triggered by the synergistic stimulation of these two factors. Although temperature controls dormancy, it plays only a limited regulatory role during the L. radiata flowering period. Thus, it is difficult to induce flowering or regulate annual flowering in this species through temperature control alone.

Lycoris radiata Herb is an important ornamental and medicinal plant native in China. Its productive and reproductive phases are separate. However, the molecular mechanisms governing this unique process of development and flowering are still unclear at the proteome level. In the present study, we used a label-free quantitative proteomic approach to investigate the dynamic changes in the proteome of the bulb tips at six developmental stages in L. radiata, including dormancy (Dor), flowering (Flo), leafing out (LO), rapid leaf extension (RLE), leaf maturity (LMa) and leaf withering (LWi). A total of 2,090 proteins were identified in bulb tips, and each pair of the stages shared 242 (Flo vs. Dor), 82 (LO vs. Flo), 156 (RLE vs. LO), 76 (LMa vs. RLE), 438 (LWi vs. LMa) and 164 (Dor vs. LWi) differentially expressed proteins (DEPs). Analysis of Gene Ontology (GO) and pathway enrichment revealed that the DEPs of Flo vs. Dor were mainly involved in “energy reserve metabolic process”, “cellular polysaccharide metabolic process” and “cellular glucan metabolic process”, whereas the DEPs in LO vs. Flo and RLE vs. LO were mainly involved in “negative regulation of intracellular steroid hormone receptor signaling pathway”. Weighted gene coexpression network analysis showed that there were temperature stimuli, stress responses and immune responses at the dormancy and flowering stages; several proteins, including heat shock protein 83, heat shock cognate 70 kDa protein 2-like isoform X1 and superoxide dismutase [Cu–Zn] 4A, can contribute to these responses. Additionally, 40S ribosomal protein and cell division cycle 5-like protein participated in protein synthesis, cell division and cell expansion during the leaf phase. These results can help us better understand the molecular mechanism of L. radiata development and flowering and provide valuable information about the proteins involved in the development and stress response in other plants of the Lycoris genus.