Respiratory Chain of Colorless Algae I. <i>Chlorophyta</i> and <i>Euglenophyta</i>

Webster, D. R.; Hackett, David P.

doi:10.1104/pp.40.6.1091

Cited by 41 publications

(15 citation statements)

References 16 publications

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“…The latter procedure was recommended by Webster and Hackett (1965) for obtaining preparations of mitochondria from P. zopfii cells. The extract was centrifuged at 27,000 g for 20 minutes at 2° C in an M.S.E.…”

Section: Preparation Of Cell-free Extractsmentioning

confidence: 99%

OBSERVATIONS ON THE NITROGEN METABOLISM OF PROTOTHECA KRÜGER

Casselton

Stacey

1969

New Phytologist

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SUMMARYFour strains of the putative apochlorotic algal genus Prototheca Krtiger {P. chlorelloides, P. moriformis, P. portoricensis and P. zopfii), could utilize either ammonium sulphate or adenine as sole nitrogen source for growth but neither potassium nitrate nor sodium nitrite could be utilized. P. zopfii could also utilize the purines hypoxanthine and guanine, and both P. zopfii and P. chlorelloides could utilize a wide range of L-and D-amino acids as sole nitrogen sources for growth in media containing glucose. P. zopfii and P. chlorelloides behave similarly to one another in the experiments and may, therefore, not be separate species, while P. moriformis and P. portoricensis behaved differently from them and from each other.Cell-free extracts of P. zopfii had transaminase and nicotinamide adenine dinucleotide phosphate (NADP) dependent glutamate dehydrogenase activities. An attempt to show that ammonium assimilation involves a coupling between the NADP glutamate dehydrogenase and the oxidative pentose phosphate pathway was complicated by the fact that uptake of exogenously supplied glucose was inhibited during ammonium assimilation.

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Section: Preparation Of Cell-free Extractsmentioning

confidence: 99%

OBSERVATIONS ON THE NITROGEN METABOLISM OF PROTOTHECA KRÜGER

Casselton

Stacey

1969

New Phytologist

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“…While the potential for cyanide-resistant respiration has been demonstrated in a few green algae (17,18,22,24), even fewer studies have attempted to quantify the engagement of the alternative pathway. Grant and Hommersand (7) detected no effect of 1 mM m-CLAM on respiration in the absence of KCN in Chlorella protothecoides, and Peltier and Thibault (15) and alternative pathway activity, C. reinhardtii R4 ('Cyt ox-') has greatly reduced Cyt pathway activity, and Selenastrum minutum displays no detectable alternative pathway capacity (25).…”

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confidence: 99%

Cytochrome and Alternative Pathway Respiration in Green Algae

Weger¹,

Guy²,

Turpin³

1990

Plant Physiol.

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Inhibitor titration curves and discrimination against 1802 by mitochondrial respiration in three strains of green algae (Selenastrum minutum [Naeg.] Collins, and two strains of Chlamydomonas reinhardtii Dangeard) with differing respiratory capabilities were determined. Discrimination for cytochrome pathway respiration ranged from 19.89 to 20.43%. Discrimination for altemative pathway respiration by wild-type C. reinhardtii (measured in the presence of KCN) was 25.46%, while discrimination values for a cytochrome oxidase deficient mutant of C. reinhardtii ranged from 24.24 to 24.96%. In the absence of KCN, the alternative pathway was not engaged in wild-type C. reinhardtii, the only algal strain that possessed both cytochrome and altemative pathway capacities.

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“…In tihe present study, evidence from difference spectra indicate that an'timycin A inhibits electron transport between cyto'chrome b an'd c and that cyanide binds to cytochrome 3. Green algae (22), yeast (1), many h'igher plant tissues (14), and animals (1) are also sensitive t'o these inhibitoors. There are, however, groups o'f closely related microorganisms which contain both sensitive and resiistan't species (18,21 found in both plants and animals.…”

Section: Discussionmentioning

confidence: 99%

Respiratory Electron Transport Systems of Aquatic Fungi. I. Leptomitus lacteus and Apodachlya punctata

Gleason

1968

Plant Physiol.

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Abstract. The electron transport systems of 2 species of aquatic fungi, Leptomitus lacteus and Apodachlya punctata, contained cytochrome a-a3 (605 m,u), 2 b type cytochromes (564 and 557 mju), c type cytochrome (551 mg), and flavoprotein, but they appeared to lack cytochrome c.. Reduced-minus-oxidized difference spectra and difference spectra in the presence of antimycin A or cyanide were used to characterize these systems. Studies with the electron microscope revealed that hyphae of Leptomitus lacteus contained numerous, oonspicuous mitochondria with tubular cristae.

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Respiratory Chain of Colorless Algae I. Chlorophyta and Euglenophyta

Cited by 41 publications

References 16 publications

OBSERVATIONS ON THE NITROGEN METABOLISM OF PROTOTHECA KRÜGER

OBSERVATIONS ON THE NITROGEN METABOLISM OF PROTOTHECA KRÜGER

Cytochrome and Alternative Pathway Respiration in Green Algae

Respiratory Electron Transport Systems of Aquatic Fungi. I. Leptomitus lacteus and Apodachlya punctata

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