Optimization of liquid fertilizer management improves grain yield, biomass accumulation, and nutrient uptake of late‐season indica fragrant rice

Wang, Xinyi; Ren, Yong; Ashraf, Umair; Gui, Runfei; Deng, Huizi; Dai, Lei; Tang, Xiangru; Wang, Zaiman; Mo, Zhaowen

doi:10.1002/jsfa.12767

Cited by 5 publications

(2 citation statements)

References 53 publications

(88 reference statements)

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“…Studied has showed that fertilization application could increase dry matter accumulation in each part, promote dry matter transport from stem and leave to panicle, and signi cantly increase the contribution rate of material assimilation at the late heading stage. The study revealed fertilization application could increase rice dry matter by (Wang et al, 2023); The present study was found that the application of biochar could increase the accumulation of dry matter in the above-ground part of rice (Fig. 1,2), and reached the maximum at the maturity stage.…”

Section: Discussionsupporting

confidence: 54%

Biochar fertilization regulates 2-acetyl-1-pyrroline, grain yield and quality in fragrant rice cropping system in southern China

Zhang,

Qiu,

Yao

et al. 2023

Preprint

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The existing model of chemical fertilizer application faces challenges in improving grain yield and quality. Fragrant rice is known for its distinctive aroma and flavor, but it generally produces less grain compared to non-fragrant rice varieties. Limited research has been conducted on the potential of biochar fertilization as a solution for increasing grain yield in 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 experimental materials. These rice cultivars were exposed to four different rates of biochar fertilizer application: no application of fertilizer (T1); application of biochar fertilizer at a rate of 0.375 t ha− 1 (T2); application of biochar fertilizer at a rate of 0.75 t ha− 1 (T3); application of biochar fertilizer at a rate of 1.5 t ha− 1 (T4). The results showed that the grain yield of both cultivars increased to some extent in both 2022 and 2023 (8.57%−33.77% increase for MXZ2; 6.00%−21.59% increase for XYXZ). Furthermore, under the T2, T3, and T4 treatments, there was an increase in the number of effective panicle, 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 the increase in biochar fertilizer 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, also improved under the T2, T3, and T4 treatments compared to the T1 treatment. Moreover, the brown rice rate, milled rice rate, and head rice rate increased, while the chalkiness degree and chalk rice degree decreased under the T2, T3, and T4 treatments. Correlation analysis showed that grain yield was positively correlated with total biomass accumulation, the number of grains per panicle, and seed setting rate. Additionally, the content of 2-AP showed a positive correlation with PRO, P5C, ∆1-pyrroline, methylglyoxal, as well as 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 grain yield and 2-AP content in fragrant rice.

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Section: Discussionsupporting

confidence: 54%

Biochar fertilization regulates 2-acetyl-1-pyrroline, grain yield and quality in fragrant rice cropping system in southern China

Zhang,

Qiu,

Yao

et al. 2023

Preprint

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“…The annual import volume has reached 3 million tons [ 3 ]. The development of high-quality germplasm resources and the establishment of high-quality and high-yield cultivation technology system for fragrant rice are two important steps to promote the formation of fragrant rice quality [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Transcription Factor OsbZIP60-like Regulating OsP5CS1 Gene and 2-Acetyl-1-pyrroline (2-AP) Biosynthesis in Aromatic Rice

Bao,

Ashraf,

et al. 2023

Plants

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The most important volatile in determining the aroma of fragrant rice is 2-Acetyl-1-pyrroline (2-AP); however, the transcriptional regulation mechanism of 2-AP biosynthesis in fragrant rice is still unclear. In this study, Osp5cs1 knockout mutant lines and OsP5CS1 over-expression lines were constructed by the genetic transformation of the Indica rice cultivar, i.e., ‘Zhonghua11′, which knocks out OsBADH2 to produce fragrance in aromatic rice. The OsP5CS1 gene was also identified as a key gene in the 2-AP biosynthesis pathway of aromatic rice. The OsP5CS1 promoter was used as bait, and the OsbZIP60-like transcription factor was screened by yeast one-hybrid assays. The OsbZIP60-like transcription factor specifically bound to the OsP5CS1 gene. The dual luciferase reporting system found that the OsbZIP60-like transcription factor promoted the transcriptional activation of OsP5CS1. Compared with the wild type, OsP5CS1 gene expression was significantly down-regulated in the Osbzip60-like mutant and resulted in a substantial reduction in 2-AP biosynthesis. Moreover, the OsP5CS1 gene expression was significantly up-regulated in OsbZIP60-like over-expressed plants, and the 2-AP concentrations were also increased, whereas the Osbzip60-like mutants were found to be sensitive to Zn deficiency. Overall, the OsbZIP60-like transcription factor promoted the 2-AP accumulation. This study provides a theoretical basis for the transcriptional regulation mechanism of 2-AP biosynthesis and explores the function of the OsbZIP transcription factor in fragrant rice.

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Optimized liquid fertilizer management increases 2-acetyl-1-pyrroline content and grain quality in aromatic rice

Dai,

Ren,

Ashraf

et al. 2024

Journal of Food Composition and Analysis

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Optimization of liquid fertilizer management improves grain yield, biomass accumulation, and nutrient uptake of late‐season indica fragrant rice

Cited by 5 publications

References 53 publications

Biochar fertilization regulates 2-acetyl-1-pyrroline, grain yield and quality in fragrant rice cropping system in southern China

Biochar fertilization regulates 2-acetyl-1-pyrroline, grain yield and quality in fragrant rice cropping system in southern China

Transcription Factor OsbZIP60-like Regulating OsP5CS1 Gene and 2-Acetyl-1-pyrroline (2-AP) Biosynthesis in Aromatic Rice

Optimized liquid fertilizer management increases 2-acetyl-1-pyrroline content and grain quality in aromatic rice

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