Rice-Potato Rotation Pattern Affects 2-Acetyl-1-Pyrroline Biosynthesis and Productivity in Aromatic Rice Grains

文献类型： 外文期刊

第一作者： Hu, Fengqin

作者： Hu, Fengqin;Shen, Congcong;Feng, Dehao;Zhu, Shuangbing;Zhu, Jianqiang;Qiu, Xianjin;Du, Bin;Hu, Fengqin;Xu, Jianlong;Shen, Congcong;Zhu, Shuangbing;Chen, Kai;Xu, Jianlong;Lu, Jian;Du, Bin;Xu, Jianlong

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关键词： aromatic rice; rice-potato rotation; 2-acetyl-1-pyrroline; rice quality

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

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年卷期： 2025 年 15 卷 1 期

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收录情况： SCI

摘要： Aromatic rice has gained significant attention due to its high economic and nutritional value. 2-Acetyl-1-pyrroline (2-AP), a key aroma compound in aromatic rice, plays a crucial role in elucidating the aroma characteristics of aromatic rice. However, there is no report on the effect of aromatic rice in rice-potato rotation on aroma characteristics. In order to study the influences of winter-planted potatoes on the yield, quality, and 2-AP biosynthesis of aromatic rice grains, the commonly cultivated aromatic rice variety Meixiangzhan-2 and the potato cultivar Huashu-5 were selected as experimental materials for a three-year consecutive field experiment with different tillage patterns consisting of rice-winter fallow as the control group (CK) and rice-potato rotation as the experimental group (RP). The results indicated that the RP treatment enhanced the soil nutrient content and decreased the bulk density. Compared with CK, RP treatment increased the effective panicle number by 10.88% and grain number per panicle by 8.82%, thereby increasing the yield by 11.99%. Meanwhile, RP treatment improved the brown rice rate by 2.61%, milled rice rate by 4.53%, head milled rice rate by 7.51%, and crude protein content by 6.98%. Regarding 2-AP biosynthesis in grains, in contrast to CK, the RP treatment raised the levels of related precursors (Delta 1-pyrroline, Delta 1-pyrrolidine-5-carboxylic acid, and proline increased by 8.95%, 18.14%, and 13.75%, respectively) and enzymes (proline dehydrogenase, ornithine transaminase, and diamine oxidase increased by 18.37%, 14.61%, and 11.36%, respectively) in its synthesis pathway, thereby facilitating the accumulation of 2-AP. Furthermore, we also observed a more stable yield and grain 2-AP content in aromatic rice under RP treatment. Overall, with regard to enhancing the aromatic rice yield and aroma, the rice-potato rotation system can be contemplated for vigorous promotion.

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