Integrated Physiological and Metabolomic Analyses of the Effect of Potassium Fertilizer on Citrus Fruit Splitting

Jiao, Yun; Sha, Cunlong; Qiao-yun, Shu

doi:10.3390/plants11040499

Cited by 8 publications

(5 citation statements)

References 37 publications

(41 reference statements)

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“…The content of reduced sugar in citrus fruit depicted the fruit quality. Wu et al (2021) and Jiao et al (2022) documented an increase in reduced sugar content with increasing potassium concentration. The supplied K affected the reducing-sugar level in fruit.…”

Section: Discussionmentioning

confidence: 96%

Optimization of New Generation Potassium (Ng-K) Fertilizer for Improvement in Quantity and Quality of Citrus (Citrus Limon)

TAHIR¹,

SABAH²,

GUL³

et al. 2023

SABRAOJBG

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Potassium (K) performs multiple essential functions in the plant, including enzyme activation and osmotic regulation. Citrus fruit quality gains considerable influence from potassium (K) fertilizer rate, application method, and sources used. The conducted field experiment assessed the impact and response of different levels of K applications on the quality and yield parameters of citrus fruit, determining a suitable time, stage, and K fertilizer dose for citrus trees. Comparing traditional K fertilizer, i.e., sulfate of potash (SOP), with new-generation potassium (NG-K) employed the use of foliar and soil (basal) applications. Treatments included (i) T1: Control (0 NPK), (ii) T2: Recommended NP and without K, (iii) T3: 500 g K as sulfate of potash (SOP) (basal), (iv) T4: New generation K (NG-K) fertilizer @1.5% (foliar), and (v) T5: 400 g NG-K fertilizer (basal). Observations revealed that citrus trees responded positively in growth characteristics, including fruit quality and physiological attributes, under both foliar and basal K fertilizer applications of different K sources. Notably, NG-K fertilizer proved a better source of K, whether applied as a basal dose or foliar spray. For growth characteristics like the fresh weight of leaves and fruit mass, obtaining the highest values of 35.2 and 172 g, respectively, resulted when applying a basal dose of NG-K. On the other hand, maximum total sugar content (13 mg L-1) and juice content (40%) occurred under foliar-applied NG-K. Foliar application of K fertilizer proved to be more effective for better growth and fruit quality parameters than the basal application of SOP.

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Section: Discussionmentioning

confidence: 96%

Optimization of New Generation Potassium (Ng-K) Fertilizer for Improvement in Quantity and Quality of Citrus (Citrus Limon)

TAHIR¹,

SABAH²,

GUL³

et al. 2023

SABRAOJBG

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show abstract

“…K + is an important macroelement for the growth and quality of citrus. Increasing K + fertilizer can significantly increase the soluble solid content of fruit and reduce fruit cracking [19,33]. Overuse of K + fertilizer caused magnesium absorption disorders in citrus [34].…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Identification, Characterization, and Expression of the HAK/KUP/KT Potassium Transporter Gene Family in Poncirus trifoliata and Functional Analysis of PtKUP10 under Salt Stress

Jin,

Yin,

Wen

et al. 2024

Horticulturae

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Potassium is an essential mineral nutrient for citrus growth and stress response. In this study, the HAK/KUP/KT gene family was identified from the genome of trifoliate orange (Poncirus trifoliata). The physical and chemical properties, chromosomal location, gene structure, evolutionary relationship, conserved motifs, and tissue expression characteristics were analyzed. The expression characteristics under low potassium and salt stress were analyzed by fluorescence quantitative PCR. The function of PtKUP10 was investigated by heterologous expression in Arabidopsis thaliana. The results showed that at least 18 PtKUPs were distributed in seven chromosomes. Phylogenetic analysis showed that four PtKUPs clustered in clade I, which mediated the high-affinity potassium absorption. Gene expression analysis showed that four PtKUPs were highly expressed in root, seven PtKUPs were up-regulated by low potassium stress, and nine PtKUPs were up-regulated by salt stress. The cis-acting elements on the promoter of PtKUPs were predominantly involved in stress and hormone responses. Overexpression of PtKUP10 in Arabidopsis thaliana could enhance salt tolerance by accumulating more potassium in the shoot and reducing sodium content in the shoots and roots. These results indicated that PtKUPs play important roles in potassium absorption and salt stress response, and PtKUP10 might enhance salt tolerance by maintaining potassium and sodium homeostasis.

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“…However, in grafted XHCP, the content of α‐Thujene, α‐Pinene, Sabinen, and β‐Pinene was higher than that of cutting XHCP, which is contrary to the public's understanding of the better quality of cutting XHCP. In addition, the large within‐group variation in the scoring plot might be due to the lack of standardized cultivation of XHCP, as soil, tree age, fertilization, irrigation, pruning, and pest and disease control in cultivation might affect fruit quality (Cheng et al, 2015 ; Jiao et al, 2022 ; Khalid et al, 2016 ; Liu et al, 2021 ; Ma et al, 2022 ; Manthos & Rouskas, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Comparative study on comprehensive quality of Xinhui chenpi by two main plant propagation techniques

Tan

Lin

et al. 2022

Food Science & Nutrition

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Xinhui chenpi (XHCP), the sun‐dried peel of the mandarin orange, Citrus reticulata “Chachi,” is the most famous crude drug, as well as a traditional seasoning in Chinese cooking. The main cultivation methods of XHCP are cutting and grafting, but it is generally considered that the quality of XHCP after cutting is superior to that obtained from plants propagated by graftings, which had a negative impact on the marketing of the finished product. In our study, a total of 25 samples of XHCP obtained from plants cultivated by either traditional methods (i.e., from cuttings) or by grafting were collected to compare the contents of four types of metabolites (essential oils, flavonoids, synephrine, and total polysaccharides) as well as antioxidant activity. The results revealed that the quality of XHCP did not decline after cutting, and marked individual differences between XHCP samples, even when prepared from plants grown in the same way. In general, grafting had no significant effect on the most essential oils components, total polysaccharides, synephrine, total flavonoids, total polymethoxylated flavones, hesperidin, nobiletin, tangeretin content, and antioxidant activity. Nevertheless, five volatile compounds can be used as potential chemical markers ( p < 0.05) to distinguish between cutting XHCP and grafted XHCP, while four volatile compounds showed high content in grafted XHCP. Our study is expected to provide a theoretical basis for XHCP breeding and cultivation, and thereby further standardize the market of XHCP.

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Integrated Physiological and Metabolomic Analyses of the Effect of Potassium Fertilizer on Citrus Fruit Splitting

Cited by 8 publications

References 37 publications

Optimization of New Generation Potassium (Ng-K) Fertilizer for Improvement in Quantity and Quality of Citrus (Citrus Limon)

Optimization of New Generation Potassium (Ng-K) Fertilizer for Improvement in Quantity and Quality of Citrus (Citrus Limon)

Genome-Wide Identification, Characterization, and Expression of the HAK/KUP/KT Potassium Transporter Gene Family in Poncirus trifoliata and Functional Analysis of PtKUP10 under Salt Stress

Comparative study on comprehensive quality of Xinhui chenpi by two main plant propagation techniques

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