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Chloroplast structure in normal and pigment‐deficient soybeans grown in continuous red or far‐red light
Author(s) -
Eskins Kenneth,
Duysen Murray
Publication year - 1984
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1984.tb06339.x
Subject(s) - chloroplast , thylakoid , photosystem ii , far red , pigment , chlorophyll , chlorophyll a , photosynthetic pigment , photosynthesis , photosystem i , botany , electron transport chain , chlorophyll b , biology , stroma , glycine , red light , chemistry , biochemistry , amino acid , gene , organic chemistry , immunohistochemistry , immunology
Clark L1, a normal green soybean [ Glycine max (L.) Merrill] and Clark y 9 y 9 , a backross‐developed isoline exhibiting pigment deficiency, were grown under continuous red (11 W m −2 and far‐red (9 W m −2 ) light. Chloroplast thylakoids from the unifoliolate leaf (9–10 days old) were isolated and analyzed for pigments, pigment‐protein, membrane polypeptides, electron transport and ultrastructural differences. Chloroplasts of soybean plants grown under far‐red light have decreased chlorophyll a to chlorophyll b ratio, increased light‐harvesting complexes, and grana structure with few stroma‐type thylakoids. Photosystem II/photosystem I ratios (PSII/PSI) are higher in far‐red due to decreased synthesis of PSI reaction center and/or less antenna associated with PSI.