Boron Requirement in Cyanobacteria | Zendy

Ildefonso Bonilla | Zendy; Mercedes GarcíaGonzález | Zendy; Pilar Mateo | Zendy

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Boron Requirement in Cyanobacteria

Author(s) -

Ildefonso Bonilla,

Mercedes GarcíaGonzález,

Pilar Mateo

Publication year - 1990

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.94.4.1554

Subject(s) - cyanobacteria , heterocyst , nitrogenase , nostoc , boron , photosynthesis , biology , botany , nitrogen fixation , bacteria , chemistry , genetics , organic chemistry

The effect of boron on heterocystous and nonheterocystous dinitrogen fixing Cyanobacteria was examined. The absence of boron in culture media inhibited growth and nitrogenase activity in Nodularia sp., Chlorogloeopsis sp., and Nostoc sp. cultures. Examinations of boron-deficient cultures showed changes in heterocyst morphology. However, cultures of nonheterocystous Cyanobacteria, Gloeothece sp. and Plectonema sp., grown in the absence of boron did not show any alteration in growth or nitrogenase activity. These results suggest a requirement of boron only by heterocystous Cyanobacteria. A possible role for this element in the early evolution of photosynthetic organisms is proposed.

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