Chlorophyll fluorescence and grain filling characteristic of wheat (Triticum aestivum L.) in response to nitrogen application level

Noor, Hafeez; Sun, Mei; AlGwaiz, Hussah I.M.; Sher, Alam; Fiaz, Sajid; Attia, Kotb A.; Wani, Shabir Hussain; AlKahtani, Muneera D.F.; Husnain, Latifa Al; Lin, Wen; Gao, Zhiqiang

doi:10.1007/s11033-022-07612-w

Cited by 16 publications

(12 citation statements)

References 61 publications

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“…The YH-20410 could significantly increase the root weight density, root length density. Root surface area density in 0–60 cm soil layer at flowering and maturity stage compared with plain YH-618, which was conducive to the growth and development of roots [ 25 ]. The transpiration rate and net photosynthetic rate N150 of decreased significantly grain weight yield [ 26 ].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the photosynthetic capacity of post-flowering flag leaves of wheat can represent the photosynthetic characteristics of the overall canopy of wheat [ 37 ]. In this study was N300 kg ha −1 significantly higher in YH-20410 than in YH-618 F v /F m reflects the efficiency of light energy conversion in the ФPSII reaction center, and its size and variation characteristics can be used to judge the resistance performance of plants to external environmental factors [ 25 , 38 ]. In this experiment, different nitrogen rate had significant effects on the chlorophyll fluorescence parameters of flag leaves in the late growth stage of wheat.…”

Section: Discussionmentioning

confidence: 99%

“…This is mainly related to the characteristics of wheat root system, and depends on the structure and function of wheat root system. In agricultural soils nitrogen absorption is regulated by wheat demand for dry matter accumulation [ 25 , 36 ]. Plant senescence is mainly affected by complex gene regulatory pathways, and gene expression products can directly or indirectly act on a specific part of plant leaves, thus regulating senescence and death of plant leaves [ 17 ].…”

Section: Discussionmentioning

confidence: 99%

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Root morphology and physiological of their relationship with nitrogen uptake in wheat (Triticum aestivum L.)

Qu,

Feng,

et al. 2024

Heliyon

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Root morphology and physiological of their relationship with nitrogen uptake in wheat (Triticum aestivum L.)

Qu,

Feng,

et al. 2024

Heliyon

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“…The tiller of dryland wheat was significantly increased by 7% at N180. N150 significantly improved dry-matter accumulation from jointing to flowering in dryland wheat by 14.8% compared with N210 [ 31 ]. N210, compared to N180, significantly increased the dry-matter accumulation of jointing to flowering wheat in dryland by 9%.…”

Section: Discussionmentioning

confidence: 99%

Long-Term Nutrient Cycle in Improved Grain Yield of Dryland Winter Wheat (Triticum aestivum L.) under Hydrological Process of Plant Ecosystem Distribution in the Loess Plateau of China

Noor,

Shah,

Ding

et al. 2023

Plants

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Precipitation is the major cause of crop yield variation in rainfed agriculture production in the Loess Plateau. As over fertilization is economically and environmentally undesirable, and crop yield and the resulting returns for N input are uncertain when rainfall variability is high, optimizing N management according to precipitation during fallow season is vital for efficient crop water use and high yield in dryland rainfed farming systems. Results show that the nitrogen treatment rate of 180 treatment significantly increased the tiller percentage rate, and the leaf area index at anthesis, the jointing anthesis, anthesis maturity dry matter, and nitrogen accumulation was closely related to yield. N150 treatment compared to N180 treatment significantly increased the percentage of ear-bearing tiller by 7%, dry substance accretion from jointing to anthesis by 9%, and yield by 17% and 15%, respectively. Our study has important implications for the assessment of the effects of fallow precipitation, as well as for the sustainable development of dryland agriculture in the Loess Plateau. Our results indicate that adjusting N fertilizer inputs based on summer rainfall variation could enhance wheat yield in rainfed farming systems.

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“…Nitrogen is an important component of protein, nucleic acid, Chl, and some hormones in plants and rational nitrogen is conducive to the photosynthetic capacity and development of plants [ 17 , 30 ]. Noor et al reported that increasing nitrogen application can improve the Chl fluorescence parameters and photosynthetic pigment content of wheat [ 31 ]. In our study, the photosynthetic parameters, key enzyme activities related to carbon and nitrogen metabolism, were all improved by applying three times more nitrogen (Figs.…”

Section: Discussionmentioning

confidence: 99%

Physiological, transcriptome and co-expression network analysis of chlorophyll-deficient mutants in flue-cured tobacco

Feng

Zhao

et al. 2023

BMC Plant Biol

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Background Photosynthetic pigments in higher plants, including chlorophyll (Chl) and carotenoids, are crucial for photosynthesis and photoprotection. Chl-deficient tobacco seedlings generally have a lower photosynthesis rate and higher nitrate-nitrogen (NO3-N) content, which causes a profound influence on tobacco yield and quality. In this study, a stable albino leaf mutant (Al) and slight-green leaf mutant (SG) obtained from the common flue-cured tobacco (Nicotiana tabacum L.) cultivar ‘Zhongyan 100’ (ZY100) by mutagenesis with ethyl methanesulfonate (EMS) were used as materials. The differences between the Chl-deficient mutants and the wild-type (WT) were analyzed in terms of biomass, photosynthetic fluorescence parameters, and carbon- and nitrogen-related physiological parameters. RNA sequencing (RNA-seq) and weighted gene co-expression network analysis (WGCNA) were used to explore the key pathways and candidate genes regulating differentiated chlorophyll and nitrate content. Results The results showed that, when compared to the WT, the Chl content and biomass of mutant plants were considerably lower while the NO3-N content was substantially elevated. The net photosynthetic rate, photosynthetic fluorescence parameters, carbohydrate, soluble protein, and carbon- and nitrogen-related enzyme activities all decreased in leaves of mutants and the development of chloroplasts was abnormal. Applying more nitrogen improved the growth and development of mutants, whereas NO3-N content distinctively increased compared with that of the WT. Through transcriptome sequencing, the downregulated genes in mutants were enriched in plant hormone signal transduction and nitrogen metabolism, which are involved in pigment biosynthesis and the carbon fixation pathway. In addition, two hub genes and seven transcription factors identified from the blue module through WGCNA were likely to be key candidate factors involved in chlorophyll synthesis and nitrate accumulation. Conclusion Our results demonstrated that differences in chlorophyll and nitrate content were caused by the combined effects of chloroplast development, photosynthesis, as well as related biological activity. In addition, transcriptome results provide a bioinformatics resource for further functional identification of key pathways and genes responsible for differences in chlorophyll and nitrate content in tobacco plants.

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Chlorophyll fluorescence and grain filling characteristic of wheat (Triticum aestivum L.) in response to nitrogen application level

Cited by 16 publications

References 61 publications

Root morphology and physiological of their relationship with nitrogen uptake in wheat (Triticum aestivum L.)

Root morphology and physiological of their relationship with nitrogen uptake in wheat (Triticum aestivum L.)

Long-Term Nutrient Cycle in Improved Grain Yield of Dryland Winter Wheat (Triticum aestivum L.) under Hydrological Process of Plant Ecosystem Distribution in the Loess Plateau of China

Physiological, transcriptome and co-expression network analysis of chlorophyll-deficient mutants in flue-cured tobacco

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