ABSTRACT
Water scarcity is the main limiting factor in agricultural crop production in arid and semi-arid areas in northern China. Humic acid could improve the plant resistance to mitigate the abiotic drought damages, which is a potential strategy to improve the crop production in these regions. An experiment to investigate the effect of water soluble humic acid on plant growth, photosynthesis characteristics and fresh tuber yield of potato under different water deficits was carried out under greenhouse conditions in 2014 and 2015. Treatments included foliar application of fresh water (FW), humic acid diluted with water 500 times (HA) and control (CK), and the water deficits included 45%, 60% and 75% of the field water holding capacity. The HA treatment showed highly significant (P ≤ 0.01) effect on dry biomass, root/shoot ratio and photosynthesis parameters, improved the dry biomass above ground (DM-AG) by 14.12-36.63%, 11.62-36.26% and 7.85-20.85% over the whole growing season at water deficits of 45%, 60% and 75% of the field water holding capacity respectively in 2014 and 2015; decreased the root/shoot (R/S) ratio in the early growing season and increased the R/S ratio in the later growing season; showed an improved effect on leaf soil plant analysis development (SPAD), photosynthesis rate (Pn) and stomatal conductance (Gs) and decreased transpiration rate (Tr) and intercellular CO2 concentration (Ci) compared with the control. HA usually showed a better effect on photosynthesis parameters in 60% of the field water holding capacity than 45% and 75% except on Pn. Compared with control, HA increased fresh tuber yield by 34.47-63.48%, 35.95-37.28% and 23.37-27.15% at 45%, 60% and 75% of the field water holding capacity respectively. HA enhanced the potato plant growth, and improved photosynthesis parameters and fresh tuber yield under different water deficits under green house conditions, and represents an opportunity to improve crop production and sustainability of agriculture in arid and semiarid regions.
Subject(s)
Humic Substances , Photosynthesis/drug effects , Plant Tubers/drug effects , Plant Tubers/growth & development , Solanum tuberosum/drug effects , Water/chemistry , Water/pharmacology , Dose-Response Relationship, Drug , Solanum tuberosum/growth & development , Solanum tuberosum/metabolism , SolubilityABSTRACT
Laryngeal squamous cell carcinoma (LSCC) is the most common type of head and neck squamous cell carcinoma (HNSCC) worldwide. Protein phosphatase 2A (PP2A) dysfunction has been widely reported in a broad range of malignancies due to its distinctive role in miscellaneous cellular processes. However, it is poorly understood whether aberrant alterations of PP2A are involved in the network of oncogenic events in LSCC. Here, we detected a panel of PP2A-associated proteins using western blot in both laryngeal squamous cell carcinoma tissues and paired adjacent normal tissues from patients (Data S1). We found that phospho-PP2A/C (Y307), α4, cancerous inhibitor of protein phosphatase 2A (CIP2A), Akt, ezrin, phospho-ezrin (T567), 14-3-3, and focal adhesion kinase (FAK) showed increased expression levels in carcinoma tissues relative to normal tissues, while phospho-Akt (T308) showed decreased levels. Our study, thus, provides a rationale for targeting PP2A to develop novel therapies and proposes a combination of interrelated biomarkers for the diagnostic evaluation and prognosis prediction in LSCC.
Subject(s)
Humans , Autoantigens/metabolism , Biomarkers, Tumor/metabolism , Carcinoma, Squamous Cell/metabolism , Case-Control Studies , Cytoskeletal Proteins/metabolism , Focal Adhesion Kinase 1/metabolism , Gene Expression Profiling , Gene Expression Regulation , Gene Expression Regulation, Neoplastic , Intracellular Signaling Peptides and Proteins/metabolism , Laryngeal Neoplasms/metabolism , Larynx/metabolism , Membrane Proteins/metabolism , Phosphorylation , Protein Phosphatase 2/metabolismABSTRACT
@#ObjectiveTo explore the clinical therapeutic effect of treating cervical vertigo induced by atlantoaxial joint malposition with manipulation.MethodsForty cervical vertigo cases induced by atlantoaxial joint malposition and diagnosed by palpating, X-ray examination, were treated with fixed-point manual reduction.ResultsThirty-one cases were cured, total effective rate was 100%.ConclusionManipulation can cure atlantoaxial joint malposition, relax vertebral artery, improve cerebrum blood supply, so it is available for cervical vertigo.
