Study on iron uptake of peach seedlings

Wu, Caifang; Zheng, Bixia; Zhou, Xiao; Xia, Xianmin; Zhou, Xiong; Lin, Lijin

doi:10.1051/e3sconf/201913607013

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…This trend was also fulfilled in young citrus seedlings [ 13 ], although the difference in Fe concentration between the aerial part and the root system was lower (62%), and they also observed a further reduction in absorption in the presence of bicarbonate. In peach plants cultivated in the absence of Fe in the nutrient solution, the stem accumulated the highest concentration of Fe, followed by the leaves, which presented around four times more Fe than the roots [ 31 ]. When grown in the presence of Fe, both values were equal and even exceeded those of the stem.…”

Section: Resultsmentioning

confidence: 99%

Seasonal Fe Uptake of Young Citrus Trees and Its Contribution to the Development of New Organs

Martínez-Cuenca

Martínez‐Alcántara

Millos

et al. 2021

Plants

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This work quantifies Fe uptake in young citrus trees, its partitioning among plant compartments, and the contribution of the Fe absorbed from fertilizer to the development of new tissues. A soil pot experiment was conducted using 4-year-old clementine trees (Citrus clementina Hort ex Tan), and a dose of 240 mg Fe was applied by labeled fertilizer (92% atom 57Fe excess). Plants were uprooted at five different phenologic states: end of flowering (May 15), end of fruit setting and fruit drop (July 1), two fruit growing moments (August 1 and October 15), and at complete fruit maturity (December 10). The Fe accumulated in the root system exceeded 90% of the total Fe content in the plant. All organs progressively enriched with 57Fe (8.5–15.5% and 7.4–9.9% for young and old organs, respectively). Reproductive ones reached the highest increase (111% between May and October). 57Fe enrichment from woody organs reflects an increasing gradient to sink organs. The root system accumulated 80% of the Fe absorbed from the fertilizer, but the young organs accumulated relatively more Fe uptake during flowering and fruit setting (15.6% and 13.8%, respectively) than old organs (around 9.8%). Although iron derived from fertilizer (Fedff) preferably supplied young organs (16.7–31.0%) against old ones (2.5–14.9%), it only represented between 13.8% and 21.4% of its content. The use efficiency of the applied Fe (FeUE) barely exceeded 15%. The lowest FeUE were found in young and old organs of the aerial part (1.1–1.8% and 0.7–1.2%, respectively). Since the pattern of the seasonal absorption of Fe is similar to the monthly distribution curve of the supplied Fe, it is recommended that the application of Fe chelates in calcareous soils should be performed in a similar way to that proposed in this curve.

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Section: Resultsmentioning

confidence: 99%

Seasonal Fe Uptake of Young Citrus Trees and Its Contribution to the Development of New Organs

Martínez-Cuenca

Martínez‐Alcántara

Millos

et al. 2021

Plants

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“…Each treatment was replicated three times, utilizing a completely randomized design. Hoagland's nutrient solution containing 10 mg/L iron (Fe 2+ ) was used for the iron supply treatments [54], while the iron deficiency treatments employed a solution devoid of iron. The MT solution (100 µmol/L) was sprayed onto both sides of the leaves and stem surfaces of the peach seedlings for MT treatments, adhering to the methods detailed by Lin et al (2022) [24].…”

Section: Experimental Designmentioning

confidence: 99%

Melatonin Promotes Iron Reactivation and Reutilization in Peach Plants under Iron Deficiency

Lin,

Li,

et al. 2023

IJMS

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The yellowing of leaves due to iron deficiency is a prevalent issue in peach production. Although the capacity of exogenous melatonin (MT) to promote iron uptake in peach plants has been demonstrated, its underlying mechanism remains ambiguous. This investigation was carried out to further study the effects of exogenous MT on the iron absorption and transport mechanisms of peach (Prunus persica) plants under iron-deficient conditions through transcriptome sequencing. Under both iron-deficient and iron-supplied conditions, MT increased the content of photosynthetic pigments in peach leaves and decreased the concentrations of pectin, hemicellulose, cell wall iron, pectin iron, and hemicellulose iron in peach plants to a certain extent. These effects stemmed from the inhibitory effect of MT on the polygalacturonase (PG), cellulase (Cx), phenylalanine ammonia-lyase (PAL), and cinnamoyl-coenzyme A reductase (CCR) activities, as well as the promotional effect of MT on the cinnamic acid-4-hydroxylase (C4H) activity, facilitating the reactivation of cell wall component iron. Additionally, MT increased the ferric-chelate reductase (FCR) activity and the contents of total and active iron in various organs of peach plants under iron-deficient and iron-supplied conditions. Transcriptome analysis revealed that the differentially expressed genes (DEGs) linked to iron metabolism in MT-treated peach plants were primarily enriched in the aminoacyl-tRNA biosynthesis pathway under iron-deficient conditions. Furthermore, MT influenced the expression levels of these DEGs, regulating cell wall metabolism, lignin metabolism, and iron translocation within peach plants. Overall, the application of exogenous MT promotes the reactivation and reutilization of iron in peach plants.

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Study on iron uptake of peach seedlings

Cited by 2 publications

References 10 publications

Seasonal Fe Uptake of Young Citrus Trees and Its Contribution to the Development of New Organs

Seasonal Fe Uptake of Young Citrus Trees and Its Contribution to the Development of New Organs

Melatonin Promotes Iron Reactivation and Reutilization in Peach Plants under Iron Deficiency

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