In particular, ∼55% of arable lands in China are revealed Mg-deficient The magnitude of Mg deficiency in different cultivated regions of the world with a specialįocus on China. Responses to Mg availability and, as far as possible, highlight spatial Mg distribution and Here, we summarize the current state of knowledge of key plant Of plants to Mg deficiency, the geographical distribution of soil Ex-Mg, and the degree However, little literature is available to better understand distinct responses As a multifaceted result of the introduction of high-yielding fertilizer-responsiveĬultivars, intensive cropping without replenishment of Mg, soil acidification, andĮxchangeable Mg (Ex-Mg) leaching, Mg has become a limiting nutrient for optimum crop Transportation, and utilization of photoassimilates, enzyme activation, and protein It largely involves chlorophyll synthesis, production, Magnesium (Mg) is an essential nutrient for a wide array of fundamental physiologicalĪnd biochemical processes in plants. In conclusion, these findings suggest that the LF navel orangeĬould be utilized in the development of new citrus varieties with improved Mg-use efficiency. In a phenotype that is tolerant to Mg deficiency. Mg uptake and/or improving Mg distribution to leaves, thereby increasing carbon dioxide (CO2)Īssimilation and photosynthesis, optimizing carbohydrate distribution, and increasing plant biomass. Same graft combinations showed that the LF/TO plants had better growth than the NHE/TO, possibly by promoting Suggests that Mg deficiency may be the primary cause of chlorosis in NHE/TO. Leaves of NHE/TO had significantly lower levels of Mg and Ca compared to the green leaves of the LF/TO. The chlorotic leaves of NHE/TO had significantly lower levels of Mg, Ca, and phosphorus (P), and the green Significantly deficient in the rhizosphere soil of both grafting combinations (LF/TO and NHE/TO). Rhizosphere soil revealed that the pH values were around 3.92 and that both Mg and calcium (Ca) were Grafted onto TO, which has typical magnesium (Mg) deficiency-induced chlorosis. Trifoliata) rootstock, which exhibits healthy green leaves, and the ‘Newhall’ navel orange (NHE, C. Study investigates the ‘Langfeng’ navel orange (LF, Citrus sinensis) grafted onto a Trifoliate orange (TO, Poncirus Interveinal chlorosis in old leaves is a common occurrence in citrus orchards in southern China.
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