Salt stress a ects the growth and development of plants, which results in a decrease in crop quality and yield. In this study, we used tomato seedlings treated with salt and trehalose as experimental materials and ana...Salt stress a ects the growth and development of plants, which results in a decrease in crop quality and yield. In this study, we used tomato seedlings treated with salt and trehalose as experimental materials and analyzed them using the technique for order preference by similarity to ideal solution analysis to select the optimal trehalose concentration for treatment. We also determined the contents of sugar and abscisic acid (ABA) and detected the expression of genes involved in the metabolism of sugar and ABA by quantitative real-time PCR. Results showed that the optimal trehalose concentration was 2 mmol/L for tomato seedlings under salt stress. Exogenous trehalose decreased the starch content and increased the soluble sugar con- tent by a ecting the expression of genes related to the metabolism of starch and soluble sugar. Exogenous trehalose altered the accumulation and distribution of sugar by inducing the upregulation of sugar transporter genes. Furthermore, trehalose increased the ABA content to induce salt stress response by regulating the expression of genes related to the synthesis and metabolism of ABA. In conclusion, trehalose can e ectively alleviate salt stress and enhance salt tolerance of tomato. These ndings provide a novel perspective and a better resource to investigate the salt tolerance mechanism and a new method for alleviating salt stress in tomato.展开更多
To the Editor:Cardiac amyloidosis(CA)is an infiltrative cardiomyopathy characterized by extracellular deposition of misfolded insoluble amyloid fibrils.^([1])Electrocardiography(ECG)is an essential diagnostic test cha...To the Editor:Cardiac amyloidosis(CA)is an infiltrative cardiomyopathy characterized by extracellular deposition of misfolded insoluble amyloid fibrils.^([1])Electrocardiography(ECG)is an essential diagnostic test characterized by low QRS voltages in CA,observed in 20–74%of patients.^([2])Cipriani et al^([3])reported that low QRS voltages could independently predict cardiovascular death.But the mechanisms underlying low QRS voltages in CA remain unclear.展开更多
基金supported by the National Natural Science Foundation of China (Nos. 31671899 and 31871848)
文摘Salt stress a ects the growth and development of plants, which results in a decrease in crop quality and yield. In this study, we used tomato seedlings treated with salt and trehalose as experimental materials and analyzed them using the technique for order preference by similarity to ideal solution analysis to select the optimal trehalose concentration for treatment. We also determined the contents of sugar and abscisic acid (ABA) and detected the expression of genes involved in the metabolism of sugar and ABA by quantitative real-time PCR. Results showed that the optimal trehalose concentration was 2 mmol/L for tomato seedlings under salt stress. Exogenous trehalose decreased the starch content and increased the soluble sugar con- tent by a ecting the expression of genes related to the metabolism of starch and soluble sugar. Exogenous trehalose altered the accumulation and distribution of sugar by inducing the upregulation of sugar transporter genes. Furthermore, trehalose increased the ABA content to induce salt stress response by regulating the expression of genes related to the synthesis and metabolism of ABA. In conclusion, trehalose can e ectively alleviate salt stress and enhance salt tolerance of tomato. These ndings provide a novel perspective and a better resource to investigate the salt tolerance mechanism and a new method for alleviating salt stress in tomato.
基金supported by the National Key Research and Development Program of China(Nos.2021YFF0501400 and 2021YFF0501404)the key project of National Natural Science Foundation of China(No.81930044)
文摘To the Editor:Cardiac amyloidosis(CA)is an infiltrative cardiomyopathy characterized by extracellular deposition of misfolded insoluble amyloid fibrils.^([1])Electrocardiography(ECG)is an essential diagnostic test characterized by low QRS voltages in CA,observed in 20–74%of patients.^([2])Cipriani et al^([3])reported that low QRS voltages could independently predict cardiovascular death.But the mechanisms underlying low QRS voltages in CA remain unclear.
