Boron, an essential micro-element forAzotobacter chroococcum

Gerretsen, F. C.; Hoop, H. de

doi:10.1007/bf01354457

Cited by 18 publications

(2 citation statements)

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“…Voets (43) and Bershova (44) also determined iron and molybdenum requirements in Azotobacter while Gerretsen & Hoop showed that 2 p.p.m. boron is essential for N 2 fixation in A. chroococcum (45). Gribanov (46) claimed that copper and manganese, at 5 mg.…”

Section: Nitrogen Metabolismmentioning

confidence: 99%

Minor Mineral Nutrients

Nicholas¹

1961

Annu. Rev. Plant. Physiol.

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Several well documented surveys within the last five years have covered various aspects of the trace element nutrition of plants (1 to 10). The purpose of this review is not to catalogue the work done on trace metals during the last few years but rather to attempt to show how trace metals are concerned in some of the major metabolic pathways of plant metabolism. The term plant is used here in its wider and indeed correct sense to include bacteria, fungi, algae, and higher forms, It is noteworthy that the recent work on the role of trace metals in the metabolism of higher plants was often preceded by work with microorganisms.

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Section: Nitrogen Metabolismmentioning

confidence: 99%

Minor Mineral Nutrients

Nicholas¹

1961

Annu. Rev. Plant. Physiol.

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“…Steinberg (1946) later stated that Aspergillus niger did not require tbe element. Gerretsen and de Hoop (1954) concluded that boron was essential for Azotobacter chroococcum. Anderson and Jordan (1961) found that boron stimulated nitrogen fixation in the bacterium, but tbey did not believe tbat the element Physiol.…”

Section: Introductionmentioning

confidence: 99%

The Comparative Boron Nutrition of Several Green and Blue‐Green Algae

Gerloff

1968

Physiologia Plantarum

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The boron requirements of filamentous and non‐filamentous species of green and blue‐green algae have been investigated. A primary feature of this study was the quantitative analysis of the cells for boron. This permitted expression of the degree of purification of the environment and the boron requirements of the organisms in terms of cell content. Three species of green algae were shown neither to require boron nor to absorb it in appreciable amounts. In contrast, three species of blue‐green algae readily absorbed boron and nitrogen fixing species showed a marked growth response to boron when nitrate was omitted from the culture medium. The response to boron was less with nitrate in the medium, probably due to increased contamination from the nitrate salt rather than an involvement of boron in the fixation process. The boron content of the deficient blue‐green algae was 1–2 μg/g, suggesting a requirement below dicot angiosperms and comparable to monocots. In agreement with other reports, the fungus Penicillium chrysogenum neither required nor absorbed boron.

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