Browsing by Author "He H"
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- ItemGenome-Wide Analysis of BBX Gene Family in Three Medicago Species Provides Insights into Expression Patterns under Hormonal and Salt Stresses.(MDPI (Basel, Switzerland), 2024-05-26) Wang J; Meng Z; He H; Du P; Dijkwel PP; Shi S; Li H; Xie Q; Igamberdiev AUBBX protein is a class of zinc finger transcription factors that have B-box domains at the N-terminus, and some of these proteins contain a CCT domain at the C-terminus. It plays an important role in plant growth, development, and metabolism. However, the expression pattern of BBX genes in alfalfa under hormonal and salt stresses is still unclear. In this study, we identified a total of 125 BBX gene family members by the available Medicago reference genome in diploid alfalfa (Medicago sativa spp. Caerulea), a model plant (M. truncatula), and tetraploid alfalfa (M. sativa), and divided these members into five subfamilies. We found that the conserved motifs of BBXs of the same subfamily reveal similarities. We analyzed the collinearity relationship and duplication mode of these BBX genes and found that the expression pattern of BBX genes is specific in different tissues. Analysis of the available transcriptome data suggests that some members of the BBX gene family are involved in multiple abiotic stress responses, and the highly expressed genes are often clustered together. Furthermore, we identified different expression patterns of some BBX genes under salt, ethylene, salt and ethylene, salicylic acid, and salt and salicylic acid treatments, verified by qRT-PCR, and analyzed the subcellular localization of MsBBX2, MsBBX17, and MsBBX32 using transient expression in tobacco. The results showed that BBX genes were localized in the nucleus. This study systematically analyzed the BBX gene family in Medicago plants, which provides a basis for the study of BBX gene family tolerance to abiotic stresses.
- ItemSpatiotemporal evolution of air cargo networks and its impact on economic development - An analysis of China's domestic market before and during the COVID-19 pandemic(Elsevier Ltd, 2024-05) He H; Wu H; Tsui KWH; Wang B; Fu XChina's domestic air cargo network plays a crucial role in economic development by enabling the efficient and reliable transportation of goods, ensuring regional competitiveness, and supporting sustained economic growth. This study aimed to examine and analyse the spatiotemporal evolution of China's domestic air cargo network and structural configuration and its relationship with local economic development before and during the COVID-19 pandemic, thereby enhancing a better understanding of the mechanisms linking air cargo networks/operations and economic development. By applying the complex network theory and the seemingly unrelated regression framework, this study revealed a significant expansion of China's domestic air cargo network, even amidst the COVID-19 pandemic. The results showed the substantial growth of smaller airports in the western region that were involved in air cargo operations and the enhanced connectivity of major hub airports in coastal cities in the east. Moreover, this study established a causal relationship between the development of the air cargo network and economic growth. These findings have significant implications for various stakeholders, including policymakers at both the central and local levels, as well as airports and airlines, strengthening the development of air cargo networks.