The distribution of Zn65 in the cotyledons ofVicia faba and its translocation during the growth and maturation of the plant

Polar, Emine

doi:10.1007/bf01372841

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…However, since a portion of the Mn was not removed by desorption and the amount of Mn remaining in the tomato and onion seeds after desorption increased with increasing temp, some active absorption (8) of Mn by the seeds may have occurred. Seeds have a semipermeable membrane around the embryo (1, 2) and ions will enter the embryo (3,14). This indicates that some ions could enter the seeds by active processes.…”

Section: Resultsmentioning

confidence: 99%

“…The salts in treated seeds have been reported to be held superficially since heavy losses occurred when treated seeds were washed (11) and cotton seed analysis indicated that N, P, and K did not penetrate the embryo (3). However, Mn, Cu (3), and Zn (14) have been found in the embryo of seeds after seed treatment. For max nutritional benefit, the treated seeds should retain all of the nutrient supplied during the soaking period.…”

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confidence: 95%

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Manganese Enrichment of Tomato and Onion Seed1

Traverse

Riekels

1973

J. Amer. Soc. Hort. Sci.

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Soaking tomato seeds in MnS04 solutions of concentrations greater than 0.5 and 1 M MnS04 inhibited germination during treatment without affecting the viability of the seeds. The emergence and early growth of tomato seedlings and the emergence of onion seedlings in soil was greater using seeds previously treated with 1 M MnS04 than with untreated seeds or with seeds treated with 2 and 2.5 M MnS04. These treatments had no effect on onion seedling growth. Soaking seeds in 1 M MnS04 was effective in supplying the Mn requirements of tomato plants grown in Mn deficient solutions for Approx 40 days. Shorter periods of normal growth were obtained by treating the seeds with less than 1 M concn of MnS04. The amount of Mn retained after desorption and washing was greater with each increase in the soaking temp (0, 10, 20, and 30°C). A substantial amount of the Mn retained by the tomato and onion seeds after soaking appeared to be located on the seed coat or in the “outer space” of the tissue. With onion seeds, an additional portion of the Mn retained after soaking was located on the exchange sites of the seeds.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 95%

Manganese Enrichment of Tomato and Onion Seed1

Traverse

Riekels

1973

J. Amer. Soc. Hort. Sci.

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“…In the Zn-deficient plants, the Zn content in flowers is equally reduced to very low levels, like in all parts of the plants, but in view of the higher demand, this likely has more drastic effects on the metabolic performance of the cells in these organs. Polar 1970 showed that in Vicia faba anthers, and especially pollen contained the highest concentration of Zn when compared to other parts of the plants. Zn is needed for pollen tube growth and pollination.…”

Section: Discussionmentioning

confidence: 98%

Arabidopsis thaliana and Thlaspi caerulescens respond comparably to low zinc supply

Talukdar

Aarts

2007

Plant Soil

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“…''^Zn-labelled seeds were obtained from plants {Viciafaba L.) grown from seeds soaked during 24 h in deionized water prior to germination and cultivated in a modified Hoagland solution supplemented with all essential microelements including 3 mg Zn^+ plus 5-8 ^Ci "-'Zn per liter (Polar 1971). All studies used 1 month and older vegetative plants of more than five intemodes produced from these seeds.…”

Section: Methodsmentioning

confidence: 99%

Variations in Zinc Content of Subcellular Fractions from Young and Old Roots, Stems and Leaves of Broad Beans (Vicia faba)

Polar

1976

Physiologia Plantarum

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65Zn labelled seeds of broad beans (Vicia faba L.) germinated and grown in a complete nutrient solution containing the radioisotope were used to investigate the change in the subcellular distribution of this trace element during subsequent development of the labelled seeds. Homogenates of leaves, stems and roots were fractionated into cell‐wall debris, nuclei, chloroplasts, mitochondria, ribosomes and “soluble” fraction. The concentration of the radioisotope in these fractions, expressed as cpm/mg dry weight, was highest in the soluble fraction and in the ribosomes isolated from young tissues. However, as roots and leaves aged, a general decrease in the overall zinc concentration was followed by a similar drop in the concentration of the metal associated with the “soluble” fraction and ribosomes, causing a more or less uniform zinc distribution pattern. On the other hand, there was a general increase in the zinc concentration of the “soluble” and in the particulate fractions of relatively high sedimentation coefficient from older stem samples. Taking also into consideration the dry weight change per unit volume of the tissues under investigation, the relationship between these variations and the metabolism of the plant is discussed.

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The distribution of Zn65 in the cotyledons ofVicia faba and its translocation during the growth and maturation of the plant

Cited by 9 publications

References 11 publications

Manganese Enrichment of Tomato and Onion Seed1

Manganese Enrichment of Tomato and Onion Seed1

Arabidopsis thaliana and Thlaspi caerulescens respond comparably to low zinc supply

Variations in Zinc Content of Subcellular Fractions from Young and Old Roots, Stems and Leaves of Broad Beans (Vicia faba)

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