Abstract
Sowing depth significantly affects ginger (Zingiber officinale Roscoe) yields, and sowing depth can affect rhizosphere community structure through root exudates. However, the relationship between the reaction process in root zone and ginger rhizome development is unclear. In this study, we investigated the rhizome and root development and rhizosphere environment at different sowing depths (2 cm (SD2), 5 cm (SD5), and 10 cm (SD10)). It was found that SD10 significantly increased ginger yield, which is related to the development of vascular bundles and the expression of aquaporin. PLS-PM analysis found that root length, root absorption capacity, and soil enzymes have the strongest correlation with yield, while root diameter is negatively correlated with yield. Under SD10, the increase of auxin and ethylene content together with the expression of ARF7, LBD16, and PIN1 promoted the development of lateral roots. In addition, SD10 increased the secretion of root organic acids, amino acids, and carbohydrates, which in turn promoted the development of rhizosphere bacteria. The promotion of SD10 on nitrogen cycle and nitrogen fixation ability in turn promoted the development of ginger.
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The English version of this manuscript has been revised by the staff of American Journal Experts (AJE).
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This study was supported by China Agriculture Research System (Grant No. CARS-24-A-09), National Natural Science Foundation of China (Grant No. 31972399), Taishan Industrial Experts Programme, China (Grant No. tscy20190105), and Shandong Province’s Dual-class Discipline Construction Project, China (Grant No. SYL2017YSTD06).
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Yao Lv and Kun Xu: conceptualization, methodology, software. Yao Lv: data curation, writing—original draft preparation. Yanyan Li: visualization, investigation. Kun Xu: supervision. Xiaohui Liu: software, validation. Kun Xu: writing—reviewing and editing.
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Lv, Y., Li, Y., Liu, X. et al. A positive response of ginger root zone and rhizome development to suitable sowing depth. Protoplasma 259, 327–342 (2022). https://doi.org/10.1007/s00709-021-01647-9
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DOI: https://doi.org/10.1007/s00709-021-01647-9