Biologia Plantarum

, Volume 51, Issue 4, pp 799–800

Are red leaves photosynthetically active?

Brief Communication

DOI: 10.1007/s10535-007-0164-z

Cite this article as:
Pomar, F. & Ros Barceló, A. Biol Plant (2007) 51: 799. doi:10.1007/s10535-007-0164-z

Abstract

At irradiances close to those representing a sunny day, red and green leaves of poinsettia (Euphorbia pulcherrima) showed only minor differences in their photosynthetic capacities despite the strong differences in their pigment composition. However, contrarily to green leaves, red leaves did not show inhibition of photosynthesis at high irradiances, because anthocyanins protected chloroplasts from photoinhibition.

Additional key words

anthocyaninschlorophyll fluorescenceEuphorbiaphotochemical and non-photochemical quenchingphotosystem 2poinsettia

Abbreviations

Chl

chlorophyll

ETR

electron transport rate

PAR

photosynthetically active radiation

PS 2

photosystem 2

qNP

nonphotochemical quenching

qP

photochemical quencing

ΦPS2

quantum yield of PS 2 photochemistry

Copyright information

© Institute of Experimental Botany, ASCR 2007

Authors and Affiliations

  1. 1.Centro de Investigaciones Agrarias de MabegondoLa CoruñaSpain
  2. 2.Department of Plant Biology (Plant Physiology)University of MurciaMurciaSpain