Mutants of Volvox carteri affecting nitrogen assimilation

Robert J. Huskey; Clay F. Semenkovich; Barbara E. Griffin; Patricia O. Cecil; Ann M. Callahan; Kenneth V. Chace; David L. Kirk

doi:10.1007/BF00271666

Mutants of Volvox carteri affecting nitrogen assimilation

Robert J. Huskey, Clay F. Semenkovich, Barbara E. Griffin, Patricia O. Cecil, Ann M. Callahan, Kenneth V. Chace, David L. Kirk

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Abstract

Three genes of Volvox carteri f. nagariensis have been identified which affect nitrogen assimilation. Mutants in two unlinked genes, nitA and nitC, were isolated as chlorate resistant and they exhibit no measureable nitrate reductase activity. The mutant in the nitB gene which is linked to nitA has slightly reduced levels of nitrate reductase activity and grows poorly on the nitrate concentration in standard medium but grows normally if the level of nitrate is increased. All of the mutants utilize ammonia, urea or nitrite for growth.

Original language	English
Pages (from-to)	157-161
Number of pages	5
Journal	MGG Molecular & General Genetics
Volume	169
Issue number	2
DOIs	https://doi.org/10.1007/BF00271666
State	Published - Jan 1979

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abstract = "Three genes of Volvox carteri f. nagariensis have been identified which affect nitrogen assimilation. Mutants in two unlinked genes, nitA and nitC, were isolated as chlorate resistant and they exhibit no measureable nitrate reductase activity. The mutant in the nitB gene which is linked to nitA has slightly reduced levels of nitrate reductase activity and grows poorly on the nitrate concentration in standard medium but grows normally if the level of nitrate is increased. All of the mutants utilize ammonia, urea or nitrite for growth.",

author = "Huskey, {Robert J.} and Semenkovich, {Clay F.} and Griffin, {Barbara E.} and Cecil, {Patricia O.} and Callahan, {Ann M.} and Chace, {Kenneth V.} and Kirk, {David L.}",

year = "1979",

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AU - Huskey, Robert J.

AU - Semenkovich, Clay F.

AU - Griffin, Barbara E.

AU - Cecil, Patricia O.

AU - Callahan, Ann M.

AU - Chace, Kenneth V.

AU - Kirk, David L.

PY - 1979/1

Y1 - 1979/1

N2 - Three genes of Volvox carteri f. nagariensis have been identified which affect nitrogen assimilation. Mutants in two unlinked genes, nitA and nitC, were isolated as chlorate resistant and they exhibit no measureable nitrate reductase activity. The mutant in the nitB gene which is linked to nitA has slightly reduced levels of nitrate reductase activity and grows poorly on the nitrate concentration in standard medium but grows normally if the level of nitrate is increased. All of the mutants utilize ammonia, urea or nitrite for growth.

AB - Three genes of Volvox carteri f. nagariensis have been identified which affect nitrogen assimilation. Mutants in two unlinked genes, nitA and nitC, were isolated as chlorate resistant and they exhibit no measureable nitrate reductase activity. The mutant in the nitB gene which is linked to nitA has slightly reduced levels of nitrate reductase activity and grows poorly on the nitrate concentration in standard medium but grows normally if the level of nitrate is increased. All of the mutants utilize ammonia, urea or nitrite for growth.

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U2 - 10.1007/BF00271666

DO - 10.1007/BF00271666

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JF - MGG Molecular & General Genetics

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ER -

Mutants of Volvox carteri affecting nitrogen assimilation

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