Abstract Arbuscular mycorrhizae fungi (AMF) inoculums may decline in the rice field due to mostly cultivation of rice under anaerobic or flooded conditions. The mechanisms regulating such events are mainly unknown. This study was undertaken to evaluate the effects of AMF on the growth response of rice plant, leaf-level photosynthetic behavior, nutrient contents within rice plant tissue and changes in bulk soil physiochemical properties under both aerobic and anaerobic water managements. A pot experiment was conducted under growth chamber conditions. The experimental treatments were control, Funneliformis mosseae and Rhizophagus irregularis × rice variety BRRI Dhan 28 × Turkish Menzilat soil that grown under both aerobic and anaerobic water regimes. The result showed that the width of leaf blade at 12 days after sowing (DAS) was similar between aerobic and anaerobic water management due to mycorrhizae inoculation. Likewise, shoot dry weight at 13 and 35 DAS was similar in both water regimes. However, shoot dry weight at harvest was higher in anaerobic condition than aerobic condition due to F. mosseae mycorrhizae species inoculation. Root biomass gaps were reduced between two managements for mycorrhizae species inoculation. The assimilation rate was tended to be higher in anaerobic than aerobic conditions. In contrast, intercellular carbon dioxide (CO2), stomatal conductance, and transpiration rate were higher in aerobic than anaerobic management. The result also showed that mycorrhizae inoculation increase nutrient concentration within rice plant tissue. Bulk soil physiochemical analysis demonstrated that the bioavailability of nutrients increased in soil solution due to mycorrhizae species inoculation. This study concluded that mycorrhizae can be utilized for rice cultivation under both aerobic and anaerobic water managements.

中文翻译：

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菌根接种对好氧和厌氧水管理下水稻养分吸收的作用

摘要 由于主要在厌氧或淹水条件下种植水稻，稻田中的丛枝菌根真菌 (AMF) 接种物可能会减少。调节此类事件的机制主要是未知的。本研究旨在评估 AMF 对水稻植株生长响应、叶片光合行为、水稻植株组织内的养分含量以及在需氧和厌氧水管理下土壤大部分理化性质变化的影响。在生长室条件下进行盆栽实验。实验处理是对照、Funneliformis mosseae 和 Rhizophagus normis × 水稻品种 BRRI Dhan 28 × 土耳其 Menzilat 土壤，它们在好氧和厌氧水环境下生长。结果表明，由于接种菌根，好氧和厌氧水管理之间的播种后 12 天叶片宽度 (DAS) 相似。同样，在 13 和 35 DAS 时，两种水体的芽干重相似。然而，由于 F. mosseae 菌根物种的接种，在厌氧条件下收获时的芽干重高于有氧条件。两种菌根物种接种管理之间的根生物量差距减少。厌氧条件下的同化率往往高于好氧条件。相比之下，细胞间二氧化碳 (CO2)、气孔导度和蒸腾速率在有氧管理中高于无氧管理。结果还表明接种菌根可增加水稻植株组织内的养分浓度。大块土壤理化分析表明，由于菌根菌种接种，土壤溶液中养分的生物利用度增加。该研究得出结论，菌根可用于在需氧和厌氧水管理下的水稻栽培。