Beneficial elements

Feng, Jian; Zhao, Fang‐Jie; Rengel, Zed; Çakmak, İsmail

doi:10.1016/b978-0-12-819773-8.00012-5

Cited by 4 publications

(1 citation statement)

References 224 publications

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“…Pedunculate oak has a relatively high concentrations of Si in leaves, i.e., in average 1.17% and up to 3.04% in the mature trees ( Lisztes-Szabó et al., 2019 ), which is in the order of magnitude of Si-accumulating species ( Ma et al., 2023 ). It has been proposed that, under stress conditions, species with intrinsically higher Si accumulation tend to have a stronger reaction to Si supply ( Coskun et al., 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Silicon modifies leaf nutriome and improves growth of oak seedlings exposed to phosphorus deficiency and Phytophthora plurivora infection

Kostic,

Nikolic,

Milanovic

et al. 2023

Front. Plant Sci.

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Beneficial effects of silicon (Si) on plants have primarily been studied in crop species under single stress. Moreover, nutrient acquisition-based responses to combination of biotic and abiotic stresses (a common situation in natural habitats) have rarely been reported, in particular in conjunction with soil amendments with Si. Pedunculate oak (Quercus robur L.), one of the ecologically and economically most important tree species in Europe, is facing a severe decline due to combined stresses, but also problems in assisted regeneration in nurseries. Here, we studied the effect of Si supply on the leaf nutriome, root traits and overall growth of 12-weeks-old oak seedlings exposed to abiotic stress [low phosphorus (P) supply], biotic stress (Phytophthora plurivora root infection), and their combination. The application of Si had the strongest ameliorative effect on growth, root health and root phenome under the most severe stress conditions (i.e., combination of P deficiency and P. plurivora root infection), where it differentially affected the uptake and leaf accumulation in 11 out of 13 analysed nutrients. Silicon supply tended to reverse the pattern of change of some, but not all, leaf nutrients affected by stresses: P, boron (B) and magnesium (Mg) under P deficiency, and P, B and sulphur (S) under pathogen attack, but also nickel (Ni) and molybdenum (Mo) under all three stresses. Surprisingly, Si affected some nutrients that were not changed by a particular stress itself and decreased leaf Mg levels under all the stresses. On the other hand, pathogen attack increased leaf accumulation of Si. This exploratory work presents the complexity of nutrient crosstalk under three stresses, and opens more questions about genetic networks that control plant physiological responses. Practically, we show a potential of Si application to improve P status and root health in oak seedlings, particularly in nurseries.

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Section: Discussionmentioning

confidence: 99%

Silicon modifies leaf nutriome and improves growth of oak seedlings exposed to phosphorus deficiency and Phytophthora plurivora infection

Kostic,

Nikolic,

Milanovic

et al. 2023

Front. Plant Sci.

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Mineral Nutrition of Vegetable and Herb Diseases

Elmer,

Datnoff

2023

Handbook of Vegetable and Herb Diseases

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The double-edged sword of potassium and sodium fertilization in xylem embolism resistance of two Eucalyptus species under drought stress

Mateus,

Perez-Martinez,

Lavres

et al. 2024

Journal of Experimental Botany

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Sodium (Na+) is a beneficial element for most plants that may replace potassium (K+) in osmoregulatory process to a certain extent, increasing plant water-use efficiency. Thus, understanding coordinated mechanisms underlying the combined use of K+ and Na+ in tree drought tolerance is a key challenge for the agricultural industry in dealing with forest productivity and water limitations. A pot experiment with three ratios of K/Na (K-supplied, partial K replacement by Na and K-deficient plants) and two water regimes, well-watered (W+) and water-stressed (W-), was conducted on saplings of two Eucalyptus species with contrasting drought sensitivities. We evaluated the point of stomatal closure (Pgs90), xylem embolism thresholds (P12, P50, P88), hydraulic safety margin (HSM), leaf gas exchange (A, E, gs and dark respiration), leaf water potential (ΨPD and ΨMD), long-term water use efficiency (WUEL) and total dry mass (TDM). Partial K replacement by Na increased the leaf gas exchange, WUEL and TDM, while Pgs90, P12, P50, P88 and ΨMD decreased (more negative), compared to plants exclusively supplied with K and K-deficient plants of both species. Fertilized plants had narrower HSMs than K-deficient plants, indicating that these Eucalyptus species adopt the functional adaptive strategy of operating close to their hydraulic limits to maximize carbon uptake while increasing the risk of hydraulic failure under drought-stress.

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Beneficial elements

Cited by 4 publications

References 224 publications

Silicon modifies leaf nutriome and improves growth of oak seedlings exposed to phosphorus deficiency and Phytophthora plurivora infection

Silicon modifies leaf nutriome and improves growth of oak seedlings exposed to phosphorus deficiency and Phytophthora plurivora infection

Mineral Nutrition of Vegetable and Herb Diseases

The double-edged sword of potassium and sodium fertilization in xylem embolism resistance of two Eucalyptus species under drought stress

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