Manganese Requirement with Respect to Growth, Hill Reaction and Photosynthesis.

Eyster, Clyde; Brown, Thomas E.; Tanner, Howard A.; Hood, S. L.

doi:10.1104/pp.33.4.235

Cited by 75 publications

(26 citation statements)

References 24 publications

(16 reference statements)

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“…S1). As noted previously for Chlorella, growth in the dark under heterotrophic conditions showed a very slight effect of manganese removal (Eyster et al, 1958). Under photoheterotrophic conditions, a growth phenotype (longer doubling time and stationary phase at lower cell density) was evident when the manganese in the medium was reduced to 0.25 mM and became more severe as the manganese supplementation was further reduced (Fig.…”

Section: Growth In Mn-deficient Mediummentioning

confidence: 49%

Manganese Deficiency in Chlamydomonas Results in Loss of Photosystem II and MnSOD Function, Sensitivity to Peroxides, and Secondary Phosphorus and Iron Deficiency

et al. 2006

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For photoheterotrophic growth, a Chlamydomonas reinhardtii cell requires at least 1.7 × 107 manganese ions in the medium. At lower manganese ion concentrations (typically <0.5 μ m), cells divide more slowly, accumulate less chlorophyll, and the culture reaches stationary phase at lower cell density. Below 0.1 μ m supplemental manganese ion in the medium, the cells are photosynthetically defective. This is accompanied by decreased abundance of D1, which binds the Mn4Ca cluster, and release of the OEE proteins from the membrane. Assay of Mn superoxide dismutase (MnSOD) indicates loss of activity of two isozymes in proportion to the Mn deficiency. The expression of MSD3 through MSD5, encoding various isoforms of the MnSODs, is up-regulated severalfold in Mn-deficient cells, but neither expression nor activity of the plastid Fe-containing superoxide dismutase is changed, which contrasts with the dramatically increased MSD3 expression and plastid MnSOD activity in Fe-deficient cells. Mn-deficient cells are selectively sensitive to peroxide but not methyl viologen or Rose Bengal, and GPXs, APX, and MSRA2 genes (encoding glutathione peroxidase, ascorbate peroxidase, and methionine sulfoxide reductase 2) are slightly up-regulated. Elemental analysis indicates that the Mn, Fe, and P contents of cells in the Mn-deficient cultures were reduced in proportion to the deficiency. A natural resistance-associated macrophage protein homolog and one of five metal tolerance proteins were induced in Mn-deficient cells but not in Fe-deficient cells, suggesting that the corresponding gene products may be components of a Mn2+-selective assimilation pathway.

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Section: Growth In Mn-deficient Mediummentioning

confidence: 49%

Manganese Deficiency in Chlamydomonas Results in Loss of Photosystem II and MnSOD Function, Sensitivity to Peroxides, and Secondary Phosphorus and Iron Deficiency

et al. 2006

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“…Competitive binding models-Although manganese serves as a cofactor in a number of enzymes, its primary role in plants is in photosynthesis where it is an essential component of the oxygen-evolving centers of photosystem II (Eyster et al 1958;Cheniae and Martin 1969,197O;Diner and Joliot 1976;Spector and Winget 1980). Its exact function in oxygen evolution has not been fully elucidated, but it is thought to act as a redox catalyst in the oxidation of water by utilizing the redox couple between Mn(I1) and higher oxidation states (Wydrzynski and Sauer 1980).…”

Section: Discussionmentioning

confidence: 99%

Effect of competitive interactions between manganese and copper on cellular manganese and growth in estuarine and oceanic species of the diatom Thalassiosira1,2

Sunda

Huntsman

1983

Limnology & Oceanography

172

119

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We investigated the relationship between growth rate and cellular manganese concentrations for an estuarine diatom Thalassiosira pseudonana (clone 3H) and a related oceanic species Thassiosira oceanica (clone 13-1). Both species were exposed to a matrix of low manganese and cupric ion activities using ethylenediaminetetraacetic acid (EDTA)-trace metal ion buffered seawater media. The growth rate of Mn-limited cultures was related to the cellular concentration of Mn, which in turn was directly related to manganese ion activity an d inversely to cupric ion activity.

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“…Tlhus, the oxidized species of quinone PERCENT INTENSITY FIG. 9. Photoinhibition of photoreactivation.…”

Section: Methodsmentioning

confidence: 99%

Photoreaction of Manganese Catalyst in Photosynthetic Oxygen Evolution

Cheniae

Martin

1969

Plant Physiol.

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Manganese Requirement with Respect to Growth, Hill Reaction and Photosynthesis.

Cited by 75 publications

References 24 publications

Manganese Deficiency in Chlamydomonas Results in Loss of Photosystem II and MnSOD Function, Sensitivity to Peroxides, and Secondary Phosphorus and Iron Deficiency

Manganese Deficiency in Chlamydomonas Results in Loss of Photosystem II and MnSOD Function, Sensitivity to Peroxides, and Secondary Phosphorus and Iron Deficiency

Effect of competitive interactions between manganese and copper on cellular manganese and growth in estuarine and oceanic species of the diatom Thalassiosira1,2

Photoreaction of Manganese Catalyst in Photosynthetic Oxygen Evolution

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