Coordinating Postanthesis Carbon and Nitrogen Metabolism of Hybrid Rice through Different Irrigation and Nitrogen Regimes

Sun, Yongjian; Sun, Yuanyuan; Yan, Fengjun; Li, Yue; Wu, Yali; Guo, Chuling; Ma, Ping; Yang, Guotao; Yang, Zhiyuan; Ma, Jun

doi:10.3390/agronomy10081187

Cited by 17 publications

(10 citation statements)

References 23 publications

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“…Functional leaf GS activity can be used as an indicator to determine the amount of nitrogen accumulation in rice accurately at each reproductive stage, whereas the NR, GS, and GOGAT activity at the heading stage can be used as an indicator to comprehensively evaluate the simultaneous improvement of rice yield and NUE. 46 Sun et al, 47 and Liao et al 48 reported that the activity of NR and GS affected rice yield. In 2019 and 2020, liquid fertilizers improved NR and GS activity in comparison with solid fertilizers (Fig.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2023

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BackgroundThe use of liquid fertilizer is an effective measure to increase rice yield and nitrogen use efficiency. There has been a lack of information regarding the effects on the grain yield, biomass accumulation, and nutrient uptake in late‐season indica fragrant rice of split fertilizer application and of nitrogen management in liquid fertilizer application.ResultsA 2‐year field experiment was carried out during 2019 and 2020 with two fragrant rice cultivars grown under differing fertilizer management treatments. Results showed that the fertilization treatments affected the grain yield, yield components, biomass accumulation, and nutrient accumulation significantly. The mean nitrogen recovery efficiency with liquid fertilizer management was greater than in a control treatment corresponding to a practice commonly used by farmers (H2). The effects of nitrogen metabolism enzymes in the leaves of both rice cultivars were stronger with liquid fertilizer treatments than with H2. Grain yield was positively associated with the effective panicle number, spikelets per panicle, dry matter accumulation, N and K accumulation, and the nitrogen metabolism enzymes.ConclusionsOptimized liquid fertilizer management increases biomass accumulation, nitrogen utilization efficiency, and nitrogen metabolism. It stabilizes yields and increases the economic benefits of late‐season indica fragrant rice. © 2023 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%

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

et al. 2023

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“…During each sampling period, the tubers were dried and weighed. Richard’s [ 23 ] equation was used for fitting according to the methods described: W = A /(1 + Be − kt ) 1/ N G = AkBe − kt / N (1 + Be ) ( N +1)/ N where W is the tuber weight (g); A is the final tuber weight; t is the time that the tuber expands (d); B , k , and N are the equation parameters; and G is the tuber expansion rate (g plant –1 d –1 ).…”

Section: Methodsmentioning

confidence: 99%

“…The N harvest index (NHI), N grain production efficiency (NGPE), N agronomic efficiency (NAE), N partial factor productivity (NPP), and N recovery efficiency (NRE) were calculated according to the methods described by Sun et al [ 23 ]: NHI (%) = N accumulation in tuber at maturity/total N accumulation at maturity × 100 NGPE (kg kg −1 ) = tuber yield/total N accumulation at maturity NAE (kg kg −1 ) = (tuber yield in N supply − tuber yield in zero N supply)/N supply rate NPP (kg kg −1 ) = tuber yield in N supply/N supply rate NRE (%) = (total N accumulation in N supply at maturity − total N accumulation in zero N supply at maturity)/N supply rate × 100 …”

Section: Methodsmentioning

confidence: 99%

“…The initial growth potential of the tiger nut ( R 0 ), time of maximum growth rate ( T max ), maximum tuber expansion rate ( G max ), mean tuber expansion rate during the expansion stage ( G mean ), and tuber expansion accumulation were calculated based on the three phases ( T 1 , T 2 , and T 99 ) after flowering, as described in Equation (5). The mean tuber expansion rate (MTR) of the three expansion periods 0– T 1 (early expanding), T 1 – T 2 (middle expanding), and T 2 – T 99 (last expanding) was calculated based on the three phases, expanding material accumulation, and the ratio of tuber expansion contributing to the A value (RGC) in each phase was calculated according to the methods of Sun et al [ 23 ]: R 0 = k / N T max = (1n B − 1n N )/ k G max = AkBe − kT max / N (1 + Be - kT max ) ( N +1)/ N G mean = Ak /2( N + 2)

T 99 = −ln [(100/99) N − 1]/ B / k …”

Section: Methodsmentioning

confidence: 99%

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Improving Tuber Yield of Tiger Nut (Cyperus esculentus L.) through Nitrogen Fertilization in Sandy Farmland

Zheng,

Liu,

Cheng

et al. 2024

Plants

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The cultivation of tiger nut (Cyperus esculentus L.) on marginal lands is a feasible and effective way to increase food production in Northern China. However, the specific influence of nitrogen fertilizer application on the growth dynamics, tuber expansion, overall yield, and nitrogen use efficiency (NUE) of tiger nuts cultivated on these sandy lands is yet to be fully elucidated. From 2021 to 2022, we conducted a study to determine the effect of N fertilizers on the leaf function morphology, canopy apparent photosynthesis (CAP), tuber yield, and NUE of tiger nut. The results indicate that the tuber yield and NUE are closely related to the specific leaf area (SLA), leaf area index (LAI), leaf nitrogen concentration per area (NA), CAP, and tuber expansion characteristics. Notably, significant enhancements in the SLA, LAI, NA, and CAP during the tuber expansion phase ranging from the 15th to the 45th day under the 300 kg N ha−1 treatment were observed, subsequently leading to increases in both the tuber yield and NUE. Moreover, a maximum average tuber filling rate was obtained under the N300 treatment. These improvements led to substantial increases in the tuber yield (32.1–35.5%), nitrogen agronomic efficiency (NAE, 2.1–5.3%), nitrogen partial factor productivity (NPP, 4.8–8.1%), and nitrogen recovery efficiency (NRE, 3.4–5.7%). Consequently, 300 kg N ha−1 of N fertilizers is the most effective dose for optimizing both the yield of tiger nut tubers and the NUE of tiger nut plants in marginal soils. Structural equation modeling reveals that N application affects the yield and NUE through its effects on leaf functional traits, the CAP, and the tuber filling characteristics. Modeling indicates that tuber expansion characteristics primarily impact the yield, while CAP predominantly governs the NUE. Above all, this study highlights the crucial role of N fertilizer in maximizing the tiger nut tuber yield potential on marginal lands, providing valuable insights into sustainable farming in dry areas.

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“…The enzymatic activities of the leaves and grains were measured on the 5th and 15th day of soybean grain filling, and SPS (sucrose phosphate synthase) activity was determined with reference to the method described by Chopra et al (2000). AGP activity was determined using the method described by Sun et al (2020). Carbon metabolism-related indicators were calculated using the method described by Wu et al (2016).…”

Section: Carbon Metabolismmentioning

confidence: 99%

Response of exogenous melatonin on transcription and metabolism of soybean under drought stress

Cao,

Zou,

Qin

et al. 2023

Physiologia Plantarum

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Amino acid metabolism is an important factor in regulating nitrogen source assimilation and source/sink transport in soybean. Melatonin can improve plant stress resistance, but whether it affects amino acid metabolism is not known. Therefore, this study investigated whether exogenous melatonin had an effect on amino acid metabolism of soybean under drought conditions and explored its relationship with yield. The treatments were normal water supply treatment (WW), drought stress treatment (D), drought stress and melatonin treatment group (D + M), sprayed with 100 μmol/L melatonin. The effects of melatonin on amino acid metabolism and grain filling were studied by physiological and omics experiments using Kangxian 9 (drought‐sensitive variety) and Suinong 26 (drought‐resistant variety) soybean cultivars. The results showed that drought stress decreased the activity of carbon and nitrogen metabolizing enzymes, which inhibited the accumulation of dry matter and protein, and decreased the yield. In the drought‐sensitive soybean variety, glycoenzymes and amino acid synthetases synthetic genes were upregulated in melatonin‐treated soybeans, hence carbon and nitrogen metabolism enzyme activity increased, increasing the carbohydrate and amino acid contents simultaneously. This resulted in higher dry matter and yield than drought‐stressed soybean not treated with melatonin. In the drought‐resistant variety, the grain weight per plant increased by 7.98% and 6.57% in 2020 and 2021, respectively, while it increased by 23.20% and 14.07% in the drought‐sensitive variety during the respective years. In conclusion, melatonin treatment can enhance the activity of nitrogen and carbon metabolism and amino acid content by upregulating the expression of soybean metabolic pathway and related genes, thus increasing the yield of soybean under drought stress.

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Coordinating Postanthesis Carbon and Nitrogen Metabolism of Hybrid Rice through Different Irrigation and Nitrogen Regimes

Cited by 17 publications

References 23 publications

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

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

Improving Tuber Yield of Tiger Nut (Cyperus esculentus L.) through Nitrogen Fertilization in Sandy Farmland

Response of exogenous melatonin on transcription and metabolism of soybean under drought stress

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