The change in microstructure of petioles and peduncles and transporter gene expression by potassium influences the distribution of nutrients and sugars in pear leaves and fruit.

  title={The change in microstructure of petioles and peduncles and transporter gene expression by potassium influences the distribution of nutrients and sugars in pear leaves and fruit.},
  author={C. Shen and Xiaoqian Shi and Changyan Xie and Y. Li and Handi Yang and X. Mei and Yangchun Xu and C. Dong},
  journal={Journal of plant physiology},
Potassium (K) is one of the most important mineral nutrients required for fruit growth and development and is known as a 'quality element'. To investigate the role of K in more detail, we performed experiments in which seven-year-old pot-grown 'Huangguan' pear trees were treated with three levels of K (0, 0.4, or 0.8 g K2O kg-1 soil). K supply improved the development of vascular bundles in pear petioles and fruit peduncles and enhanced expression of genes involved in nutrients and sugar… Expand
5 Citations
Advances in Mineral Nutrition Transport and Signal Transduction in Rosaceae Fruit Quality and Postharvest Storage
Mineral nutrition, taken up from the soil or foliar sprayed, plays fundamental roles in plant growth and development. Among of at least 14 mineral elements, the macronutrients nitrogen (N), potassiumExpand
Mineral elements uptake and physiological response of Amaranthus mangostanus (L.) as affected by biochar.
Results showed that biochar could significantly alter the mineral migration in amaranth and physiologically damage in the plants, and it is essential to study the effect of biochar within appropriate concentrations on plants prior to wide application in agriculture. Expand
Synergistic and antagonistic interactions between potassium and magnesium in higher plants
The antagonistic effect of K on Mg is stronger than that of Mg on K in root absorption and transport within plants, indicating that the balanced use of K and Mg fertilizers is necessary for sustaining high plant-available Mg and alleviating K-induced Mg deficiency, especially in plant species with high K demand or in high-available-K soil. Expand
Spatio-temporally expressed sorbitol transporters cooperatively regulate sorbitol accumulation in pear fruit.
Interestingly, it is found that sorbitol accumulation in pear fruit was cooperatively mediated by SOT3, SOT6/20, Sot19/21, and SOT22, which provides a foundation for further research into sugar accumulation processes in pear Fruit, contributing to the improvement of fruit quality. Expand
Replacing peat moss with mixed hardwood biochar as container substrates to produce five types of mint (Mentha spp.)
Abstract Recent studies showed that biochar (BC) has the potential to partially replace peat moss-based commercial substrate as container substrates to produce crops, but the research of its use forExpand


Alteration of nutrient allocation and transporter genes expression in rice under N, P, K, and Mg deficiencies
Findings suggest that deficiencies of the major nutrients suppressed the export of carbohydrates from source leaves and regulated sugar and nutrient transporter genes investigated in this study could be used for elucidating the molecular mechanism of plants in their adaptation to varied nutrient supply. Expand
Potassium Application Reduces Calcium and Magnesium Levels in Bermudagrass Leaf Tissue and Soil
High K rates appear to increase the potential for Ca and Mg deficiencies in bermudagrass, indicating that rates higher than those that provide suffi- cient K levels for normal growth should not be used. Expand
Comparative transcriptome profiling of potassium starvation responsiveness in two contrasting watermelon genotypes
It is suggested that repressed defense and stress response can save energy for better root growth in YS, which can facilitate K+ uptake and increase K efficiency and tolerance to K+ deficiency. Expand
Effect of potassium application on celery growth and cation uptake under different calcium and magnesium levels in substrate culture
Abstract The effect of potassium (K) on celery (Apium graveolens L.) growth and cation uptake was studied under different calcium (Ca) and magnesium (Mg) levels in substrate culture in theExpand
Multilevel Analysis of Primary Metabolism Provides New Insights into the Role of Potassium Nutrition for Glycolysis and Nitrogen Assimilation in Arabidopsis Roots1[W][OA]
regulation of enzymes at the level of transcripts and proteins is likely to play an important role in plant adaptation to K deficiency by maintaining carbon flux into amino acids and proteins, decreasing negative metabolic charge, and increasing the nitrogen-carbon ratio in amino acids. Expand
Transcriptome Analysis of Differentially Expressed Genes Induced by Low and High Potassium Levels Provides Insight into Fruit Sugar Metabolism of Pear
The gene expression patterns of leaves and fruit in response to different K levels during the middle and late stages of fruit development as well as the molecular mechanism of improvement of fruit sugar levels by K were revealed and provided a scientific basis for improving fruit quality with supplemental K fertilizers. Expand
Potassium nutrition and translocation in sugar beet.
It is suggested that K(+)-promoted increase in synthetic metabolism may be the basis of the increased carbon assimilation and translocation in plants supplied with an above-minimal level of K(+). Expand
Relationship between xylem functionality, calcium content and the incidence of bitter pit in apple fruit
The large loss in xylem functionality in ‘Catarina’ apples which led to a higher (K + Mg +-N)/Ca ratio in the fruit seems to explain the higher susceptibility to BP as compared to ‘Fuji’. Expand
Growth and cation absorption of some fruit‐vegetable crops grown on rockwool as affected by different cation ratios in the nutrient solution
Abstract In a series of experiments, cucumber, eggplant and sweet pepper were grown in rockwool with nutrient solutions of different ratios of potassium (K), calcium (Ca) and magnesium (Mg). TheExpand
Magnesium deficiency in sugar beets alters sugar partitioning and phloem loading in young mature leaves
The observed increase in BvSUT1 gene expression supports the idea that sucrose loading into the phloem is defective, resulting in its accumulation in the leaf, and helps identify how Mg deficiency alters carbon partitioning in sugar beet (Beta vulgaris L.) plants. Expand