Negative effects of calcium on magnesium and potassium benefit for adaptability of Chinese prickly ash (Zanthoxylum bungeanum) grown on poor soils

Autor: He-Chun Piao
Rok vydání: 2020
Předmět:
Zdroj: Plant Physiology Reports. 25:268-276
ISSN: 2662-2548
2662-253X
DOI: 10.1007/s40502-020-00513-9
Popis: The aim of this study was to provide information about how calcium (Ca), magnesium (Mg) and potassium (K) respond to changes in the sugar concentrations and carbon isotopic compositions (δ13C) of Chinese prickly ash under field condition, therefore, to show why negative effect of Ca on Mg and K would be beneficial for adaptability of Chinese prickly ash grown on poor soils. Chinese prickly ash samples were collected in the six areas with different mean annual precipitation. Drought stress was evaluated via carbon isotope signatures. Additionally, concentrations of Mg, Ca, K and sugar concentrations in foliage, roots and soils were analyzed. Increased soil available Ca concentrations did significantly inhibit foliar Mg partitioning, implying that Ca did negatively affect Mg partitioning. Changes of foliar Mg concentrations were strongly controlled by variations of balance between soil available Ca and Mg. Thus, an accurate assessment of plant nutrient status should be useful for precision nutrient management in the fields. Magnesium deficiency did significantly induce foliar sugar accumulation, therefore, there were negative relationships between Mg concentrations and δ13C values in foliage. In addition, increased sugar concentrations did significantly increase δ13C values, implying that drought or water stress induced the accumulation of sugar in foliage. Linear and power function regression analysis revealed that negative effects of Ca on Mg and K should be responsible for accumulation of soluble sugar in foliage, which may enhance a plant’s adaptability on poor soils.
Databáze: OpenAIRE
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