Recessive morphology transition (RMT) involves the smooth transition of farmland property rights, input structure, quality, and function. China’s agriculture has changed from a period of high-speed growth to a period of high-quality development. Compared with dominant morphology transition (DMT) characterized by quantitative focus, it is of more practical significance to explore the impact of RMT on high-quality agricultural development (HAD). This paper firstly constructed a multidimensional index system to quantify HAD. Based on analysis of the impact mechanism of RMT on HAD, a spatial econometric model was established to explore the impact by making use of the panel data of 27 provinces in China from 2003–2017. The results indicated that RMT and HAD both have positive geospatial correlation. Furthermore, the spatial econometric model provides more accurate results of the impact of RMT on HAD than panel models. If the RMT in a local province increases by 1%, HAD could be augmented by 0.13%. Likewise, RMT has a strong positive spatial spillover effect on HAD. If the RMT in a certain province increases by 1%, HAD could add 1.22% in neighboring provinces. The analysis suggests that spatial coordination of farmland use is an important foundation for constructing high-quality development association of regional agriculture. It is necessary to strengthen intergovernmental cooperation in the process of farmland recessive morphology transition and high-quality agricultural development.

Summary: The potato virus Y (PVY) is a plant virus that causes massive crop losses globally, especially in Solanaceae crops. A strain of the plant growth‐promoting rhizobacterium (PGPR), Serratia marcescens ‐S3 was found to inhibit PVY replication in Nicotiana benthamiana . However, there have been no in‐depth studies demonstrating the underlying mechanism. In the current study, we found that ubiquitination of NbHsc70‐2 is an important way for Serratia marcescens ‐S3 to trigger induced systemic resistance (ISR). After the treatment with S. marcescens ‐S3, the protein level of NbHsc70‐2 reduced significantly. Inhibiting of ubiquitination increased the accumulation of NbHsc70‐2 in plants and reduced S. marcescens ‐S3‐mediated resistance to PVY. Furthermore, transgenic engineered Nicotiana benthamiana NbHsc70‐2 ^KO and NbHsc70‐2 ^USM were constructed using CRISPR‐Cas9‐mediated NbHsc70‐2 knock‐out and ubiquitination respectively. S. marcescens ‐S3 significantly reduced the inhibition of NbHsc70‐2 protein accumulation in NbHsc70‐2 ^KO and NbHsc70‐2 ^USM . The virulence of PVY was stronger in NbHsc70‐2 ^USM than the wild‐type plants. These results showed that S. marcescens ‐S3 increases the ubiquitination of NbHsc70‐2 to inhibit the recruitment of molecular chaperone NbHsc70‐2 to reduce its replication and infection of PVY.

Land disputes can pose significant threats to the life and property of residents, and integrated resolutions of land disputes can create opportunities for refining and adjusting land resources and rights. Over time, research on the determinants of land disputes has evolved from focusing on legal, administrative, and economic factors to exploring deeper social factors, particularly social capital. Drawing on data from China Judgement Online, Chinese social surveys, and various statistical yearbooks, this study uses an econometric model to innovatively assess three types social capital (social networks, interpersonal trust, and institutional trust) as key determinants of land disputes. The findings reveal that both structural social capital (represented by social networks) and cognitive social capital (in the form of institutional trust) can significantly reduce land disputes. Furthermore, administrative intervention may have a mediating effect by mitigating the negative influence of structural social capital on land disputes. The findings of this study not only advance the theoretical understanding of the influence of social capital on land disputes but also offer practical insights into preventing and resolving such disputes, thereby contributing to the establishment of a peaceful and secure society.