Effect of Phosphorus and Zinc Levels in The Substrate on 65Zn Distribution in Subterranean Clover and Flax

Millikan, CR; Hanger, BC; Bjarnason, EN

doi:10.1071/bi9680619

Cited by 20 publications

(5 citation statements)

References 17 publications

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“…They further reported (Riceman and Jones 1960) that the zinc in fully expanded leaves was largely retained, and it was only when these leaves became prematurely senescent as a result of zinc deficiency that any of this zinc was retranslocated. Millikan, Hanger, and Bjarnason (1968) also observed a similar removal of 65Zn from senescent old leaves in zinc-deficient T. subterraneum. The reason for the release of zinc from zinc-deficient senescing leaves is not known.…”

Section: Discussionsupporting

confidence: 51%

The Mobility of 65zn In Trifolium Subterraneu M L. and Antirrhinum Majus L.

Millikan¹,

Hanger²,

Bjarnason³

1969

Aust. Jnl. Of Bio. Sci.

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SummaryT. subterraneum (cv. Clare) and A. majus were grown in nutrient cultures to which 65Zn was added at two stages in the plants' development. It was found that the 65Zn recently absorbed by the roots was preferentially routed to the youngest leaves. When the plants were transferred from radioactive to non·radioactive cultures, only a limited recirculation of 65Zn took place. In T. 8ubterraneum this was principally from the roots and hypocotyl, but also between and within some leaves, whilst in A. majus recirculation occurred along the stem, roots, and within some leaves.Injection of IOOOl-'g of non-radioactive zinc into the third true leaf of T. subterraneum failed to alter the distribution of 65Zn between leaves, although it did induce movement of 65Zn along the petiole into the lamina of some individual leaves.

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Section: Discussionsupporting

confidence: 51%

The Mobility of 65zn In Trifolium Subterraneu M L. and Antirrhinum Majus L.

Millikan¹,

Hanger²,

Bjarnason³

1969

Aust. Jnl. Of Bio. Sci.

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“…The cause of P-induced Zn deficiency has intrigued many researchers and several explanations have been proposed, including the theory that P enhances the physiological requirement for Zn (Millikan et al, 1968), or inactivates Zn in the tissues (Leece, 1978), but the actual causal mechanism is still unknown (Payne et al, 1986). One of the controversies is why P treatment enhance symptoms of Zn deficiency without a proportional decline in Zn concentrations of plant tissues (Olsen, 1972), as evident in Table 3.…”

Section: Possible Mechanismsmentioning

confidence: 99%

Phosphorus-induced micronutrient disorders in hybrid poplar

Teng

Timmer

1990

Plant Soil

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Growth and nutrition of four clones (DN 17, DN 125, NM 2, Jac 4) of hybrid poplar in a sandy loam nursery soil, were examined for fertilization response to P at four rates (0,288, 576, and 1152 kg ha -1) in 1986 and 1987. Except for clone NM 2, fertilization reduced height growth and caused various degrees of leaf symptoms suggesting nutrient disorders. Height of DN 17, the most sensitive of the four clones, was decreased 23 and 47% by the highest P treatment in the first and second year, respectively. Foliar vector diagnosis indicated that P addition induced Zn and/or Cu deficiencies rather than a direct P toxicity, since P vectors were smaller than Zn and Cu vectors. Available P levels in soil were raised proportionally by fertilization, but DTPA-extractable micronutrient status was not affected except for Mn. Differences in leaf P/Zn and P/Cu ratios among clones suggested that the clonal variation in growth performance may be related to maintaining nutritional balance in plants.

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“…Moreover, high levels of Pin this experiment decreased the concentration ofZn in plant tissue near critical levels (Table 3). Other explanations are based on the translocation of Zn from roots to shoots (Stukenholtz et al, 1966;Sharma et al, 1968;Safaya, 1976) or metabolic anomalies, which are caused from a lack of equilibrium between two elements in the plants (Boawn and Leggett, 1964;Boawn and Brown, 1968;Millikan et al, 1968). The latter has been clarified through the work of Loneragan et al ( 1982) who have shown that Pinduced Zn deficiency is not due to Zn metabolism in the leaves, but rather on P absorption and transport from roots.…”

Section: Nutrient Distribution In the Foliagementioning

confidence: 99%

Phosphorus‐induced Zinc Deficiency in Wheat on Residual Phosphorus Plots¹

1986

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One-time heavy application of P on certain soils can provide sufficient available P to sustain crop production over a period of several years, but may cause Zn nutritional problem for crops. A field study was conducted to determine tbe effect of applied Zn on wheat (Triticum aestivum L.) grown on residual P plots and identify tbe mechanism of P X Zn interaction. This study was conducted in 1984 in a continuous wheat system on a clayey, mixed, frigid Typic Hyploboroll soil that bad received 0, 80, and 160 kg P ba -• in 1979. Three experiments were carried out using a split plot randomized complete block design with three levels of P as m~in plots and rates of soilapplied Zn-sulfate (0, S, 10, and 20 kg Zn ba-•) or Zn-cbelate (0, 0.5, 1.0, and 2.0 kg Zn ba-1 ) or foliar-applied Zn-cbelate (0 and 0.35 kg Zn ba-•) as subplots. A one-time application of 80 or 160 kg P ba-• increased wheat yield significantly. In the presence of P, application of Zn resulted in significant increase in grain yield and Zn uptake into grain. Applied P increased soil P levels and tissue P concentration, but resulted in a significant decrease of tissue Zn levels. DTP A ( dietbylenetriaminepentaacetic acid )-extractable soil Zn levels in the non-Zn-amended treatment were independent of P application rate. Plant roots in bigb P treatments contained significantly lower levels of vesicular-arbuscular mycorrhizal (V AM) infection than tbe control. Further, a close relationship was observed between Zn levels in tbe aboveground plant parts and V AM infection.AdditioiUll index words: Phosphorus X Zinc interaction, Vesiculararbuscular mycorrbizae, Triticum aestivum L., Zinc-sulfate, Zincchelate.' Publication no. R446 of the Saskatchewan Inst. of Pedology.

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Effect of Phosphorus and Zinc Levels in The Substrate on 65Zn Distribution in Subterranean Clover and Flax

Cited by 20 publications

References 17 publications

The Mobility of 65zn In Trifolium Subterraneu M L. and Antirrhinum Majus L.

The Mobility of 65zn In Trifolium Subterraneu M L. and Antirrhinum Majus L.

Phosphorus-induced micronutrient disorders in hybrid poplar

Phosphorus‐induced Zinc Deficiency in Wheat on Residual Phosphorus Plots¹

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Effect of Phosphorus and Zinc Levels in The Substrate on 65Zn Distribution in Subterranean Clover and Flax

Cited by 20 publications

References 17 publications

The Mobility of 65zn In Trifolium Subterraneu M L. and Antirrhinum Majus L.

The Mobility of 65zn In Trifolium Subterraneu M L. and Antirrhinum Majus L.

Phosphorus-induced micronutrient disorders in hybrid poplar

Phosphorus‐induced Zinc Deficiency in Wheat on Residual Phosphorus Plots1

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Phosphorus‐induced Zinc Deficiency in Wheat on Residual Phosphorus Plots¹