Flue-cured tobacco (Nicotiana tabacum L.) leaf quality can be improved by grafting with potassium-efficient rootstock

Hu, Wei; Wei, Jingyi; Qin, Di; Tao, Tao; Zhang, Jie; Liu, Jia; Shi, Xiaojun

doi:10.1016/j.fcr.2021.108305

Cited by 13 publications

(14 citation statements)

References 31 publications

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“…Studies have shown that the flammability of cigar leaves is related to potassium, chlorine content and potassium-chlorine ratio, and potassium content and potassium-chlorine ratio are positively correlated with the flammability of cigar leaves ( Hu et al, 2021 ). As shown in Table 3 , at the end of fermentation, compared with the control group, the decrease of potassium content and potassium chloride in the water-added group was more obvious than that in the cocoa-added group, which may be due to the dilution of potassium and chlorine content in cigar leaves after adding water.…”

Section: Resultsmentioning

confidence: 99%

Effects of adding cocoa fermentation medium on cigar leaves in agricultural fermentation stage

Zong,

Hu,

Huang

et al. 2023

Front. Bioeng. Biotechnol.

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Background and Objective: With the development of the world economy and the integration of cultures, the Chinese cigar market has shown a significant upward trend. However, high-quality cigar leaves are mostly produced in Dominica, Cuba, Nicaragua and other places. In contrast, Chinese cigar leaves have problems such as insufficient aroma, which has become one of the main factors restricting the development of Chinese cigars. Adding medium to ferment is a traditional method in the cigar industry. At present, it mostly relies on manual experience, and lacks systematic and scientific research. At the same time, the addition of medium fermentation is mainly concentrated in the industrial fermentation process, and has not yet begun to be applied in the agricultural fermentation process. In this study, the medium was added to the agricultural fermentation process for the first time to explore the possibility of the application. The effects of adding cocoa medium to ferment on the chemical composition, sensory quality and surface microbial diversity of eggplant core cigar leaves were investigated.wrapper.Method: With Dexue 7′ as the experimental material, the changes of main chemical components of wrapper fermented with water and cocoa medium were determined, and microbial community structure on the surface and relative abundance of cigar leaves at different turning periods were analyzed, and the functional genes were predicted. The results of the study were as follows: 1) The results of sensory evaluation showed that the addition of cocoa medium could highlight the aroma of bean, cocoa and coffee, improve the sweetness and fluency and the combustibility of cigar leaves. 2) The addition of cocoa medium increased the contents of proline and malic acid which were positively correlated with sensory quality, and decreased the contents of citric acid, linoleic acid, basic amino acids and aromatic amino acids which were negatively correlated with sensory quality. 3) The addition of cocoa medium increased the total amount of aroma components in cigar leaves, especially carotenoid degradation products, and changed the structural composition of some aroma substances in wrappercigar leaves. 4) The similarity of species composition between the water-added group and the cocoa-added group was higher, but the dominant microorganisms were more concentrated. Staphylococcus and Arthrobacter maintained a high relative abundance throughout the fermentation process, which may be the key microorganisms in the agricultural fermentation stage. 5) The addition of cocoa medium increased the expression abundance of related functional genes in cigar leaves, accelerated the fermentation process of cigar leaves, and bacteria played a major role in the fermentation process.Conclusion: Adding cocoa medium in the agricultural fermentation stage, the changes of bacterial community and dominant flora on the surface of cigar leaves are the main factors affecting their internal chemical components, and the addition of media has a positive effect on tobacco fermentation.

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Section: Resultsmentioning

confidence: 99%

Effects of adding cocoa fermentation medium on cigar leaves in agricultural fermentation stage

Zong,

Hu,

Huang

et al. 2023

Front. Bioeng. Biotechnol.

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“…Each treatment had three biological replicates. Data were statistically analysed by analysis of variance using statistical software (SAS version 9.2; SAS Institute, Cary, NC) [31]. Statistical significance was assessed using the least-significant difference (LSD) test (P < 0.05).…”

Section: Discussionmentioning

confidence: 99%

Transcriptomics reveals the molecular mechanisms of flesh colour differences in eggplant (Solanum melongena)

Tao

Yang

et al. 2023

BMC Plant Biol

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Background Fruit flesh colour is not only an important commodity attribute of eggplant but is also closely related to maturity. However, very little is known about its formation mechanism in eggplant. Results Two inbred lines of eggplant, green 'NC7' and white 'BL', were used in this study to explain the differences in flesh colour. Transcriptome sequencing results revealed a total of 3304 differentially expressed genes (DEGs) in NC7 vs. BL. Of the DEGs obtained, 2050 were higher and 1254 were lower in BL. These DEGs were annotated to 126 pathways, where porphyrin and chlorophyll metabolism, flavonoid biosynthesis, and photosynthesis-antenna proteins play vital roles in the colour formation of eggplant flesh. At the same time, Gene Ontology (GO) enrichment significance analysis showed that a large number of unigenes involved in the formation of chloroplast structure were lower in BL, which indicated that the formation of chloroplasts in white-fleshed eggplant was blocked. This was confirmed by transmission electron microscopy (TEM), which found only leucoplasts but no chloroplasts in the flesh cells of white-fleshed eggplant. Several genes encoding ERF and bHLH transcription factors were predicted to participate in the regulation of chlorophyll biosynthetic genes. Conclusions The results of this study indicated that differences in the gene expression of the chlorophyll metabolic pathway were the main cause of the different flesh colour formations. These findings will increase our understanding of the genetic basis in eggplant flesh colors formation mechanism.

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“…As an important economic crop, tobacco has made great contributions to the development of the national economy. Tobacco is typical potassium (K)-loving crop, and K plays an important role in increasing leaf size, leaf yield, single leaf weight and improving leaf color [ 2 , 3 ]. At the same time, as an activator of more than 60 enzymes in plants, K affects the enzyme activity to participate in various physiological metabolic activities such as photosynthesis, carbohydrate transportation, etc., thereby regulates the accumulation of sugars, pigments, and aromatic substances that can directly affect the combustibility, aroma and other chemical qualities of flue-cured tobacco leaves [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Sugar plays a key role in tobacco by participating in the synthesis of proteins, nucleic acids, lipids and other substances, to provide energy for the growth and development of tobacco and participate in the synthesis of aromatic substances. So, sugar directly affects the sensory quality of leaves, the quality of cut tobacco, the aroma and taste of smoking [ 3 , 4 ]. Suitable nicotine content is the goal pursued by the production of high-quality and low-harm tobacco leaves.…”

Section: Introductionmentioning

confidence: 99%

Polyaspartic acid increases potassium content and reduces the ratio of total sugar to nicotine in tobacco leaves

Zhang,

Tian,

et al. 2024

Heliyon

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Flue-cured tobacco (Nicotiana tabacum L.) leaf quality can be improved by grafting with potassium-efficient rootstock

Cited by 13 publications

References 31 publications

Effects of adding cocoa fermentation medium on cigar leaves in agricultural fermentation stage

Effects of adding cocoa fermentation medium on cigar leaves in agricultural fermentation stage

Transcriptomics reveals the molecular mechanisms of flesh colour differences in eggplant (Solanum melongena)

Polyaspartic acid increases potassium content and reduces the ratio of total sugar to nicotine in tobacco leaves

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