The chloroplast avoidance response decreases internal conductance to CO2 diffusion in Arabidopsis thaliana leaves

Plant, Cell & Environment
Danny TholenIchiro Terashima

Abstract

The relationship between chloroplast arrangement and diffusion of CO(2) from substomatal cavities to the chloroplast stroma was investigated in Arabidopsis thaliana. Chloroplast position was manipulated by varying the amount of blue light and by cytochalasin D (CytD) treatment. We also investigated two chloroplast positioning mutants. Chloroplast arrangement was assessed by the surface area of chloroplasts adjacent to intercellular airspaces (S(c)). Although it has been previously shown that long-term acclimation to high light is linked with a large S(c), we found that the short-term chloroplast avoidance response reduces S(c). This effect was not apparent in the blue-light-insensitive phot2 mutant, which did not show the avoidance response. As expected, the smaller S(c) induced by the avoidance response was coupled to a similar decrease in internal conductance. This reduction in internal conductance resulted in an increased limitation of the rate of photosynthesis. The limiting effect of S(c) on internal conductance and photosynthesis was also shown in chup1, a mutant with a constant small S(c) as the result of an unusual chloroplast arrangement. We conclude that chloroplast movements in A. thaliana can rapidly alter leaf morp...Continue Reading

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Citations

Jul 31, 2010·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Marcos Vinicius Leal-CostaEliana Schwartz Tavares
Mar 4, 2009·Journal of Experimental Botany·Youshi TazoeJohn R Evans
Apr 28, 2009·Journal of Experimental Botany·Ulo NiinemetsCharles R Warren
Apr 10, 2009·Journal of Experimental Botany·Thijs L PonsEnrico Brugnoli
Apr 28, 2009·Journal of Experimental Botany·Francesco LoretoMauro Centritto
Apr 28, 2009·Journal of Experimental Botany·John R EvansIchiro Terashima
Jun 24, 2009·Journal of Experimental Botany·Shingo TakagiNami Sakurai-Ozato
Nov 16, 2010·Plant Physiology·Ichiro TerashimaÜlo Niinemets
Nov 19, 2010·Plant Physiology·Erik H Murchie, Krishna K Niyogi
Nov 13, 2012·PloS One·Quang Tri HoBart M Nicolaï
Nov 3, 2012·Plant Science : an International Journal of Experimental Plant Biology·Danny TholenXin-Guang Zhu
Mar 11, 2016·Journal of Plant Research·Terashima IchiroOguchi Riichi
Aug 9, 2011·Plant, Cell & Environment·Phillip A DavisRoger P Hangarter
May 18, 2012·Plant, Cell & Environment·Danny TholenXin-Guang Zhu
Sep 17, 2014·Plant, Cell & Environment·Susanne von Caemmerer, John R Evans
Apr 3, 2014·Plant, Cell & Environment·Matt StataRowan F Sage
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Nov 21, 2015·Plant, Cell & Environment·Takeshi Higa, Masamitsu Wada
Aug 28, 2014·Plant, Cell & Environment·Youshi Tazoe, Jiri Santrucek
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Sep 29, 2011·Plant & Cell Physiology·Hideyasu Takamatsu, Shingo Takagi
Jan 1, 2017·Plant, Cell & Environment·Guillaume Théroux-Rancourt, Matthew E Gilbert

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