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The identification of new genes involved in regulating cold tolerance in rice is urgent because low temperatures repress plant growth and reduce yields. Cold tolerance is controlled by multiple loci and involves a complex regulatory network. Here, we show that rice jacalin‐related lectin (OsJRL) modulates cold tolerance in rice. The loss of OsJRL gene functions increased phenylalanine metabolism and flavonoid biosynthesis under cold stress. The OsJRL knock‐out (KO) lines had higher phenylalanine ammonia‐lyase (PAL) activity and greater flavonoid accumulation than the wild‐type rice, Nipponbare (NIP), under cold stress. The leaves had lower levels of reactive oxygen species (ROS) and showed significantly enhanced cold tolerance compared to NIP. In contrast, the OsJRL overexpression (OE) lines had higher levels of ROS accumulation and showed lower cold tolerance than NIP. Additionally, the OsJRL KO lines accumulated more abscisic acid (ABA) and jasmonic acid (JA) under cold stress than NIP. The OsJRL OE lines showed increased sensitivity to ABA compared to NIP. We conclude that OsJRL negatively regulates the cold tolerance of rice via modulation of phenylalanine metabolism and flavonoid biosynthesis. Summary statement: OsJRL negatively regulates the cold tolerance of rice via modulation of phenylalanine metabolism and flavonoid biosynthesis. [ABSTRACT FROM AUTHOR]

Arginine vasopressin (AVP) plays a main role in maintaining the homeostasis of fluid balance and vascular tone and in regulating the endocrine stress response in response to osmotic, hemodynamic and stress stimuli. However, the difficulty in measuring AVP limits its clinical application. Copeptin, the C-terminal part of the AVP precursor, is released in an equimolar concentration mode with AVP from the pituitary but is more stable and simple to measure. Therefore, copeptin has emerged as a promising surrogate marker of AVP with excellent potential for the diagnosis, differentiation and prognosis of various diseases in recent decades. However, its application requires further validation, especially in the pediatric population. This review focuses on the clinical value of copeptin in different pediatric diseases and the prospects for its application as a potential biomarker. [ABSTRACT FROM AUTHOR]

With changes in food preferences and life styles, more and more attentions have been focused on healthier food. Nowadays, resistant starch (RS) which can resist digestion in the human intestine has been recognized and accepted. High RS diet shows great benefit for the human health, and breeding high RS rice variety is a great target for realizing dietary intervention. To provide guidance for RS improvement in rice, this review summarized the unique physiochemical properties of RS and the possible approaches, i.e. genetic regulation, for enhancing RS content in rice, and proposed the potential ways to obtain rice variety with high RS content.

Based on career construction theory, this study explored the relationship and mediating mechanisms between career adaptability and secondary school students' academic engagement. Four hundred and eight secondary school students from three Chinese secondary schools were surveyed using a three-wave time-lag design. The study found that career adaptability positively predicted academic engagement. Parental support and career hope mediated the relationship between career adaptability and academic engagement. Additionally, parental support and career hope also played a series of mediating roles between career adaptability and academic engagement. The results of this study contribute to the fields of positive psychology and occupational psychology research, extend the application of career construction theory to secondary students, and provide practical insights into increasing academic engagement and interventions for secondary students. The implications of these findings for practice and future research are discussed. [ABSTRACT FROM AUTHOR]

BACKGROUND: At present, increasing importance has been attracted to healthy food enriched in resistant starch (RS), which has great benefits in health‐promoting. Raw potato has rich RS2, whereas most RS2 may become digestible after gelatinization, resulting in few RS being left in processed potato. Breeding potatoes with high RS2 or RS3 or both can meet the demand for various healthy potato products. RESULTS: There were apparent discrepancies among three potatoes with contrast RS2 and RS3 content in thermal properties, viscosity and digestibility. ZS‐5 had the highest RS2 with 50.17% but the lowest RS3 with 3.31%. Meanwhile, ZS‐5 had the largest starch granule, the highest proportion of B3, viscosity and hardness, and the highest digestibility. DN303 with the highest content of RS3 (5.08%) had the lowest hardness and fracturability. MG56‐42 with both higher RS2 and RS3 content showed the highest resistance to digestion and moderate hardness and fracturability. CONCLUSION: The present study enriches the potential resources and provides a reliable scientific basis for high RS potatoes breeding. The various features of different potatoes make it possible to screen potatoes according to different demands. © 2023 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]