Light-Regulated Gravitropism in Seedling Roots of Maize | Zendy

Lewis J. Feldman | Zendy; Winslow R. Briggs | Zendy

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Light-Regulated Gravitropism in Seedling Roots of Maize

Author(s) -

Lewis J. Feldman,

Winslow R. Briggs

Publication year - 1987

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.83.2.241

Subject(s) - gravitropism , phytochrome , seedling , zea mays , botany , blue light , red light , biology , pigment , phototropism , far red , horticulture , biophysics , chemistry , agronomy , arabidopsis , physics , optics , biochemistry , organic chemistry , gene , mutant

Red light-induced changes in the gravitropism of roots of Zea mays variety Merit is a very low fluence response with a threshold of 10(-9) moles per square meter and is not reversible by far red light. Blue light also affects root gravitropism but the sensitivity of roots to blue is 50 to 100 times less than to an equal fluence of red. In Z. mays Merit we conclude that phytochrome is the sole pigment associated with light-induced changes in root gravitropism.

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