title: Light environment within a leaf. II. Progress in the past one-third century.
abstract: Studies directly related to light environments within a leaf, conduced mainly in the past one-third century, are reviewed. In particular, studies that revealed the profiles of light absorption and photosynthetic capacity are highlighted. Progress in this research field has been accelerated by devising innovative techniques. Roles of the main photosynthetic tissues, the palisade and spongy tissues, as the light guide and diffuser, respectively, are discussed. When the leaf is illuminated with diffuse light, light is absorbed more by the chloroplasts located near the illuminated surface. The meanings of the occupation of the mesophyll surfaces facing the intercellular spaces by chloroplasts and chloroplast movement are also discussed. The discrepancy between the light absorption profile and that of photosynthetic capacity is examined most intensively.
authors.affiliation: Department of Biological Sciences, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. itera@bs.s.u-tokyo.ac.jp.
authors.forename: Terashima
authors.initials: T
authors.lastname: Ichiro
authors.affiliation: Department of Biological Sciences, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
authors.forename: Ooeda
authors.initials: O
authors.lastname: Hiroki
authors.affiliation: Department of Biological Sciences, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
authors.forename: Fujita
authors.initials: F
authors.lastname: Takashi
authors.affiliation: Graduate School of Life Sciences, Tohoku University, 6-3 Aoba, Sendai, 980-8578, Japan.
authors.forename: Oguchi
authors.initials: O
authors.lastname: Riichi
mesh_terms: D002734:Chlorophyll / Q000378:metabolism; D002736:Chloroplasts / Q000378:metabolism; D004777:Environment; D005470:Fluorometry; D008027:Light; D010788:Photosynthesis; D018515:Plant Leaves / Q000528:radiation effects*; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism
chemical_list: D002734:Chlorophyll; D012273:Ribulose-Bisphosphate Carboxylase
keywords: Chloroplast movement; Diffuse light; Fluorescence; Palisade tissue; Photosynthesis; Spongy tissue