Traceability and policy suggestions for ozone pollution in heavy industrial city in Northeast China.

In the heavy industrial city of Northeast China, there has been a significant decrease in particulate matter pollution while experiencing a sharp increase in ozone (O) pollution. However, the main influencing factors and source contributions to O3 remain unclear. Taking the case of Siping as an example, this study analyzed the spatiotemporal characteristics, assessed local source contributions to O, and revealed regional transmission effects using numeric simulation and statistical methods.

Niche and interspecific association of dominant tree species in karst forest of Junzi Mountain, Eastern Yunnan, China.

To understand the interspecific relationships of tree species in the karst forest of Junzi Mountain in Eas-tern Yunnan, we evaluated the niche and interspecific association of dominant tree species based on field survey plot data with the combining approaches of niche determination, test, association coefficient (AC), and Spearman rank correlation test. The results showed that the niche breadth of was the largest and that of was the smallest. The ranking of niche breadth was more consistent with the ranking of frequency than with that of importance values.

Roger Alleviates Memory Impairment in a Rat Model of Alzheimer's Disease Through the EGR1/BACE1/APP Axis.

Memory deficits and loss are the earliest and most prominent features of Alzheimer's disease (AD). This study was aimed to clarify the mechanistic basis of an active fraction of Roger (AFPR) on the memory abilities of AD rat models, which involves early growth response 1 (EGR1) expression and β-secretase 1 (BACE1)-mediated deposition of amyloid β peptide (Aβ). An AD rat model was developed by Aβ25-35, which was further treated with AFPR alone or in combination with lentiviral EGR1.

Methods for RNA profiling of gravi-responding plant tissues.

Plant transcriptional responses to gravity stimulation by reorientation are among the fastest measured in any tissue or species. Upon reorientation, changes in abundance of specific mRNAs can be measured within seconds or minutes, for plastid or nuclear encoded genes, respectively. Identifying fast gravity-induced transcripts has been made possible by the development of high-throughput technology for qualitative and quantitative RNA analysis.

High-throughput RNA sequencing of pseudomonas-infected Arabidopsis reveals hidden transcriptome complexity and novel splice variants.

We report the results of a genome-wide analysis of transcription in Arabidopsis thaliana after treatment with Pseudomonas syringae pathovar tomato. Our time course RNA-Seq experiment uses over 500 million read pairs to provide a detailed characterization of the response to infection in both susceptible and resistant hosts. The set of observed differentially expressed genes is consistent with previous studies, confirming and extending existing findings about genes likely to play an important role in the defense response to Pseudomonas syringae.

A mutation in Thermosensitive Male Sterile 1, encoding a heat shock protein with DnaJ and PDI domains, leads to thermosensitive gametophytic male sterility in Arabidopsis.

In most flowering plant species, pollination and fertilization occur during the hot summer, so plants must have evolved a mechanism that ensures normal growth of their pollen tubes at high temperatures. Despite its importance to plant reproduction, little is known about the molecular basis of thermotolerance in pollen tubes. Here we report the identification and characterization of a novel Arabidopsis gene, Thermosensitive Male Sterile 1 (TMS1), which plays an important role in thermotolerance of pollen tubes.