Silicon and selenium fertilizer management improved productivity and aroma of fragrant rice

Du, Bin; Wang, Wenxi; Jiang, Shuochen; Xie, Yimei; Cheng, Yinjie; Xu, Jianlong; Xing, Danying

doi:10.1002/csc2.20352

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…Reactive oxygen species (ROS) include substances, such as superoxide and peroxides, which create a chain reaction with unsaturated fatty acids in the cell membranes; thus, causing damage to the plant cells because the reactants destabilize the stable shape of the cell membranes [25]. Increasing the activity of antioxidant enzymes, including CAT, SOD, and POD, play an important role in suppressing extra ROS, thereby maintaining normal levels of these ROS [26].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Different Organic Materials and Cover Thicknesses on the Early Growth and Antioxidant Response of Direct-Seeded Rice

Zeng,

Yu,

Liu

et al. 2023

Agronomy

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Direct-seeded rice (Oryza sativa) (DSR) is gaining increasing acceptance worldwide because it saves both time and labor. A covering treatment is a simple method to improve early plant growth under direct-seeding conditions. Herein, field experiments were conducted to study the effects of different powdered organic covering materials, i.e., organic fertilizer, seedling substrate, nutrient soil A, and nutrient soil B. In addition, the effects of different covering thicknesses were studied, including 5, 10, 15, and 20 mm, on the germination and early growth of DSR varieties. The two rice varieties Wufengyou 286 and Zhongjiazao 17 were used for this study. The seedling substrate at 15 mm and nutrient soil A at 5 mm covering thickness significantly increased the rate of germination of Wufengyou 286 by 43.93% and 40.26%, respectively, compared to the control treatment. Organic fertilizer, seedling substrate, and nutrient soil A at covering thicknesses of 5 mm significantly increased the germination rate by 42.57%, 38.62%, and 40.10%, respectively, compared to the control. Notably, all the treatments increased the emergence rate, with Wufengyou 286 exhibiting the most pronounced effect. The seedling substrate at 10 mm covering thickness significantly increased the rate of emergence of Wufengyou286 by 15.42% compared to the control. Similarly, the seedling substrate at 10 mm covering thickness gave the best results by increasing the rate of emergence of Zhongjiazao 17 by 10.85% compared to the control. On average, the rate of emergence of Wufengyou 286 and Zhongjiazao 17 under the experimental treatment increased by 11.81% and 6.45%, respectively, compared to the control. The appropriate cover treatment enhanced the early growth of DSR by improving its morphological attributes, such as plant height and dry weight, and regulating the physio-biochemical responses, such as the production of antioxidants and photosynthetic pigments. The seedling growth rate of both varieties decreased as the thickness increased. This study elucidated the effects of different covering materials on the early growth of DSR, which can further guide their actual production.

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Section: Discussionmentioning

confidence: 99%

The Effects of Different Organic Materials and Cover Thicknesses on the Early Growth and Antioxidant Response of Direct-Seeded Rice

Zeng,

Yu,

Liu

et al. 2023

Agronomy

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“…Similar to Se, the application of silicon (Si) or manganese (Mn) fertilizer also increased the 2-AP levels and grain yield in fragrant rice. , Molybdenum (Mo) application also enhanced the 2-AP content in rice under Cd stress. , Not only the individual nutrients but also their coapplication and/or synergism also showed an increase in 2-AP contents. For example, a combination of Zn and lanthanum, Zn and Se, and Si and Se also led to an increase in grain 2-AP contents in fragrant rice. ,− …”

Section: Advancement In Agro-management Practices To Improve the Arom...mentioning

confidence: 99%

Biosynthesis of 2-Acetyl-1-pyrroline in Fragrant Rice: Recent Insights into Agro-management, Environmental Factors, and Functional Genomics

Imran

Shafiq

Ashraf

et al. 2023

J. Agric. Food Chem.

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Rice is a staple food for more than half of the world's population, and rice fragrance is a key quality attribute which is highly desired by consumers and attracts premium prices in the international market. There are around 200 volatile compounds involved in rice fragrance, but 2-acetyl-1-pyrroline (2-AP) has been considered a master regulator of aroma in fragrant rice. Consequently, efforts were made to increase the 2-AP contents in the grain by managing agronomical practices or by using modern functional genomic tools, which successfully converted nonfragrant cultivars to fragrant rice. Furthermore, environmental factors were also reported to influence the 2-AP contents. However, a comprehensive analysis of 2-AP biosynthesis in response to agromanagement practices, environmental factors, and the application of functional genomic tools for fragrant rice production was missing. In this Review, we summarize how micro/macronutrients, cultivation practices, amino acid precursors, growth regulators, and environmental factors, such as drought, salinity, light, and temperature, influence the 2-AP biosynthesis to modulate the aroma of fragrant rice. Furthermore, we also summarized the successful conversion of nonfragrant rice cultivars to fragrant rice using modern gene editing tools, such as RNAi, TALENS, and CRISPR-Cas9. Finally, we discussed and highlighted the future perspective and challenges related to the aroma of fragrant rice.

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“…Previous studies revealed that the application of silicon fertilizer could increase the 2-AP content due to the improved PRO and net photosynthetic rates [9]. Du et al [10] showed that silicon and selenium fertilizer management regulated soil, increased photosynthesis, and promoted dry matter accumulation, which is beneficial for promoting the grain yield and 2-AP content of fragrant rice. Meanwhile, the application of nitrogen fertilizer could increase the 2-AP content through an increase in the PRO content [11].…”

Section: Introductionmentioning

confidence: 99%

Biochar Regulates 2-Acetyl-1-Pyrroline, Grain Yield and Quality in Fragrant Rice Cropping Systems in Southern China

Zhang,

Qiu,

Yao

et al. 2023

Agronomy

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With the existing model of chemical fertilizer application faces, improving grain yield and quality is challenging. Fragrant rice is known for its distinctive aroma and flavor, but it generally produces less grain than non-fragrant rice varieties. Limited research has been conducted on the potential of biochar as a solution for increasing the grain yield of fragrant rice. In a two-year field trial conducted in 2022 and 2023, two fragrant rice cultivars, Meixiangzhan2 (MXZ2) and Xiangyaxiangzhan (XYXZ), were selected as the experimental materials. These rice cultivars were subjected to four different rates of biochar application: no biochar treatment(T1); biochar with 0.375 t ha−1 (T2); biochar with 0.75 t ha−1 (T3); and biochar with 1.50 t ha−1 (T4). The results showed that the grain yield of both cultivars increased to an extent in both 2022 and 2023 (an 8.57–33.77% increase for MXZ2; a 6.00–21.59% increase for XYXZ). Furthermore, under the T2, T3, and T4 treatments, there was an increase in the number of effective panicles, seed setting rate, 1000-grain weight, biomass accumulation, net photosynthetic rate, and intercellular CO2 concentration. However, the transpiration rate and stomatal conductance decreased. The content of 2-acetyl-1-pyrroline (2-AP) increased with an increased rate of biochar application, and the highest content was observed under the T4 treatment (153.54–178.32 µg kg−1 in 2022; 163.93–180.28 µg kg−1 in 2023). The activities of proline dehydrogenase (PDH) and 1-pyrrolin-5-carboxylic acid synthase (P5CS), as well as the contents of proline (PRO), 1-pyrrolin-5-carboxylic acid (P5C), ∆1-pyrroline, and methylglyoxal, were improved under the T2, T3, and T4 treatments compared to the T1 treatment. Moreover, under the T2, T3, and T4 treatments, the brown rice rate, milled rice rate, and head rice rate increased, while the chalkiness degree and chalk rice rate decreased. Our correlation analysis showed that grain yield was positively correlated with total biomass accumulation, the number of grains per panicle, and the seed setting rate. Additionally, the content of 2-AP showed positive correlations with PRO, P5C, ∆1-pyrroline and methylglyoxal, and the activities of PDH and P5CS. In conclusion, applying biochar at a rate of 1.5 t ha−1 can be more effective in increasing the grain yield and 2-AP content of fragrant rice.

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Silicon and selenium fertilizer management improved productivity and aroma of fragrant rice

Cited by 7 publications

References 21 publications

The Effects of Different Organic Materials and Cover Thicknesses on the Early Growth and Antioxidant Response of Direct-Seeded Rice

The Effects of Different Organic Materials and Cover Thicknesses on the Early Growth and Antioxidant Response of Direct-Seeded Rice

Biosynthesis of 2-Acetyl-1-pyrroline in Fragrant Rice: Recent Insights into Agro-management, Environmental Factors, and Functional Genomics

Biochar Regulates 2-Acetyl-1-Pyrroline, Grain Yield and Quality in Fragrant Rice Cropping Systems in Southern China

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