Anatomical and Physiological Acclimation of Fatsia Japonica Leaves to Irradiance

Abstract

Anatomical and physiological leaf characteristics and biomass production of Fatsiajaponica plants were studied. Plants were grown in a growth chamber at 300 umol m ? S-I (high light) and 50 umol m ? S-I (low light) photosynthetic photon flux density. Plants grown under high light showed a net maximum photosynthetic rate 44% higher than plants grown under low light; the light compensation point and the light saturation point were also higher in high-light plants. Photosynthetic oxygen evolution in isolated chloroplasts was about 40% higher in high-light plants. However, chlorophyll content on a dry weight basis, on a leaf area basis, and per chloroplast was greater in plants grown under low light. Leaf thickness in high-light plants was 13% higher than in low-light plants. The number of chloroplasts was 30% higher in high-light leaves, while chloroplast size was only slightly higher. Chloroplast ultrastructure was also affected by light. Leaf dry weight, leaf area, and biomass production per plant were drastically reduced under low light. Thus, F. japonica is a plant that is able to acclimate to different photosynthetic photon flux density by altering its anatomical and physiological characteristics. However, lowlight acclimation of this plant has a considerable limiting effect on biomass production. 1149

Developmental changes in mesophyll diffusion conductance and photosynthetic capacity under different light and water availabilities in Populus tremula: how structure constrains function

“…1990). However, in the latter study, t chl was greater in LL‐acclimated spongy mesophyll cells than in palisade cells under both growth light treatments (Vidal et al . 1990).…”

“…20% larger in HL grown than in LL‐grown Chenopodium alba leaves (Oguchi et al . 2003), and minor differences in t chl were observed between leaves grown under different irradiances in Fatsia japonica (Vidal et al . 1990).…”

“…In fact, tchl was ca. 20% larger in HL grown than in LL-grown Chenopodium alba leaves (Oguchi et al 2003), and minor differences in tchl were observed between leaves grown under different irradiances in Fatsia japonica (Vidal et al 1990). However, in the latter study, tchl was greater in LL-acclimated spongy mesophyll cells than in palisade cells under both growth light treatments (Vidal et al 1990).…”

Growth, photosynthesis, and needle structure of silver fir (Abies alba Mill.) seedlings under different canopies

“…The overall similarity of pigment composition and nitrogen contents between firs from larch and spruce stands emphasizes the role of leaf structure in determining its photosynthetic capacity (Niinemets and Tenhunen, 1997;Sims et al, 1998;Reich et al, 2000). Further studies will address whether, in spite of the similar pigment concentrations, acclimation to different light level is associated with modifications in chloroplast size, distribution pattern and/or ultrastructure (Vidal et al, 1990).…”

Carbon dioxide sequestration model of a vertical greenery system

“…We assumed that plant uptake increased with increasing concentration of carbon dioxide in the atmosphere, up to a half saturation constant of 300 ppm (Jørgensen and Fath, 2011) and that vegetation converts about 6% of the solar radiation intercepted into plant biomass (Aikman, 1989). The growth rate of plants, expressed by an increasing graphic function in STELLA, depends on atmospheric CO 2 concentration, precipitation, irrigation and the quantity of nutrients in the irrigation water (Table S.2 in Supplemental material on-line; Singh and Yadava, 1974;Hirose et al, 1989;Vidal et al, 1990;Newton, 1991;Speiser and Rowell-Rahier, 1991;Jo and McPherson, 1995;Peñuelas and Llusià, 1996; van Iersel, 1997;de Kroon et al, 1998;Lloret et al, 1999;Osborne et al, 2000;Getter et al, 2009;Onipchenko et al, 2009;Olivier et al, 2011;Bretzel et al, 2012;Yong-Ángel et al, 2012). Logistic growth function introduced a carrying capacity, corresponding to the maximum amount of carbon contained in the plant biomass of the vertical garden.…”