RESUMO
Increasing the soybean-planting area and increasing the soybean yield per unit area are two effective solutions to improve the overall soybean yield. Northeast China has a large saline soil area, and if soybeans could be grown there with the help of isolated saline-tolerant rhizobia, the soybean cultivation area in China could be effectively expanded. In this study, soybeans were planted in soils at different latitudes in China, and four strains of rhizobia were isolated and identified from the soybean nodules. According to the latitudes of the soil-sampling sites from high to low, the four isolated strains were identified as HLNEAU1, HLNEAU2, HLNEAU3, and HLNEAU4. In this study, the isolated strains were identified for their resistances, and their acid and saline tolerances and nitrogen fixation capacities were preliminarily identified. Ten representative soybean germplasm resources in Northeast China were inoculated with these four strains, and the compatibilities of these four rhizobium strains with the soybean germplasm resources were analyzed. All four isolates were able to establish different extents of compatibility with 10 soybean resources. Hefeng 50 had good compatibility with the four isolated strains, while Suinong 14 showed the best compatibility with HLNEAU2. The isolated rhizobacteria could successfully establish symbiosis with the soybeans, but host specificity was also present. This study was a preliminary exploration of the use of salinity-tolerant rhizobacteria to help the soybean nitrogen fixation in saline soils in order to increase the soybean acreage, and it provides a valuable theoretical basis for the application of saline-tolerant rhizobia.
RESUMO
BACKGROUND: Emotional and behavioural difficulties (EBD) in children are common, characterised by externalising or internalising behaviours that can be highly stable over time. EBD are an important cause of functional disability in childhood, and predictive of poorer psychosocial, academic, and occupational functioning into adolescence and adulthood. The prevalence, stability, and long-term consequences of EBD highlight the importance of intervening in childhood when behavioural patterns are more easily modified. Multiple factors contribute to the aetiology of EBD in children, and parenting plays an important role. The relationship between parenting and EBD has been described as bidirectional, with parents and children shaping one another's behaviour. One consequence of bidirectionality is that parents with insufficient parenting skills may become involved in increasingly negative behaviours when dealing with non-compliance in children. This can have a cyclical effect, exacerbating child behavioural difficulties and further increasing parental distress. Behavioural or skills-based parenting training can be highly effective in addressing EBD in children. However, emotional dysregulation may intercept some parents' ability to implement parenting skills, and there is recognition that skills-based interventions may benefit from adjunct components that better target parental emotional responses. Mindful parenting interventions have demonstrated some efficacy in improving child outcomes via improvements in parental emotion regulation, and there is potential for mindfulness training to enhance the effectiveness of standard parent training programmes. OBJECTIVES: To assess the effectiveness of mindfulness-enhanced parent training programmes on the psychosocial functioning of children (aged 0 to 18 years) and their parents. SEARCH METHODS: We searched the following databases up to April 2023: the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, CINAHL Plus, PsycINFO, Sociological Abstracts, Social Sciences Citation Index, Conference Proceedings Citation Index - Social Science & Humanities, AMED, ERIC, ProQuest Dissertations & Theses, Cochrane Database of Systematic Reviews, Campbell Collaboration Library of Systematic Reviews, as well as the following trials registers: ClinicalTrials.gov and the World Health Organization International Clinical Trials Registry Platform (WHO ICTRP). We also contacted organisations/experts in the field. SELECTION CRITERIA: We included randomised and quasi-randomised trials. Participants were parents or caregivers of children under the age of 18. The intervention was mindfulness-enhanced parent training programmes compared with a no-intervention, waitlist, or attentional control, or a parent training programme with no mindfulness component. The intervention must have combined mindfulness parent training with behavioural or skills-based parent training. We defined parent training programmes in terms of the delivery of a standardised and manualised intervention over a specified and limited period, on a one-to-one or group-basis, with a well-defined mindfulness component. The mindfulness component must have included mindfulness training (breath, visualisation, listening, or other sensory focus) and an explicit focus on present-focused attention and non-judgemental acceptance. DATA COLLECTION AND ANALYSIS: We followed standard Cochrane procedures. MAIN RESULTS: Eleven studies met our inclusion criteria, including one ongoing study. The studies compared a mindfulness-enhanced parent training programme with a no-treatment, waitlist, or attentional control (2 studies); a parent training programme with no mindfulness component (5 studies); both a no-treatment, waitlist, or attentional control and a parent training programme with no mindfulness component (4 studies). We assessed all studies as being at an unclear or high risk of bias across multiple domains. We pooled child and parent outcome data from 2118 participants to produce effect estimates. No study explicitly reported on self-compassion, and no adverse effects were reported in any of the studies. Mindfulness-enhanced parent training programmes compared to a no-treatment, waitlist, or attentional control Very low certainty evidence suggests there may be a small to moderate postintervention improvement in child emotional and behavioural adjustment (standardised mean difference (SMD) -0.46, 95% confidence interval (CI) -0.96 to 0.03; P = 0.06, I2 = 62%; 3 studies, 270 participants); a small improvement in parenting skills (SMD 0.22, 95% CI 0.06 to 0.39; P = 0.008, I2 = 0%; 3 studies, 587 participants); and a moderate decrease in parental depression or anxiety (SMD -0.50, 95% CI -0.96 to -0.04; P = 0.03; 1 study, 75 participants). There may also be a moderate to large decrease in parenting stress (SMD -0.79, 95% CI -1.80 to 0.23; P = 0.13, I2 = 82%; 2 studies, 112 participants) and a small improvement in parent mindfulness (SMD 0.21, 95% CI -0.14 to 0.56; P = 0.24, I2 = 69%; 3 studies, 515 participants), but we were not able to exclude little to no effect for these outcomes. Mindfulness-enhanced parent training programmes compared to parent training with no mindfulness component Very low certainty evidence suggests there may be little to no difference postintervention in child emotional and behavioural adjustment (SMD -0.09, 95% CI -0.58 to 0.40; P = 0.71, I2 = 64%; 5 studies, 203 participants); parenting skills (SMD 0.13, 95% CI -0.16 to 0.42; P = 0.37, I2 = 16%; 3 studies, 319 participants); and parent mindfulness (SMD 0.11, 95% CI -0.19 to 0.41; P = 0.48, I2 = 44%; 4 studies, 412 participants). There may be a slight decrease in parental depression or anxiety (SMD -0.24, 95% CI -0.83 to 0.34; P = 0.41; 1 study, 45 participants; very low certainty evidence), though we cannot exclude little to no effect, and a moderate decrease in parenting stress (SMD -0.51, 95% CI -0.84 to -0.18; P = 0.002, I2 = 2%; 3 studies, 150 participants; low certainty evidence). AUTHORS' CONCLUSIONS: Mindfulness-enhanced parenting training may improve some parent and child outcomes, with no studies reporting adverse effects. Evidence for the added value of mindfulness training to skills-based parenting training programmes is suggestive at present, with moderate reductions in parenting stress. Given the very low to low certainty evidence reviewed here, these estimates will likely change as more high-quality studies are produced.