Invasion of broad‐leaf tree species into a larch plantation: seasonal light environment, photosynthesis and nitrogen allocation

Kitaoka, Shôzaburô; Koike, Takao

doi:10.1111/j.1399-3054.2004.00359.x

Cited by 53 publications

(50 citation statements)

References 51 publications

(66 reference statements)

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“…Light photosynthetic curves at ambient CO 2 and a leaf temperature of 25℃. quick acclimatization to shady conditions (Evans, 1999;Evans and Poorter, 2001;Kitaoka and Koike, 2004). Unlike LMA, however, S mes increased under shade ( Table 2).…”

Section: Discussionmentioning

confidence: 95%

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Effect of nitrogen loading on the growth and photosynthetic responses of Japanese larch seedlings grown under different light regimes

Mao

Watanabe

et al. 2015

J. Agric. Meteorol.

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We determined the effects of nitrogen (N) loading (35 kg N ha -1 y -1 ) on the needle morphological and photosynthetic traits of 4-year-old seedlings of Japanese larch (Larix kaempferi) under different three light intensities (open, 50% and 20% light) to evaluate how they adjust to low light conditions. Nitrogen deposition in forests has been increasing in East Asia. Although Japanese larch is not native to Hokkaido, northern Japan, this light demanding tree species is now a promising forestation species and reaches to the age of bearing cones for regeneration. Forest gaps affects the success in regeneration. This light-demanding tree is a promising reforestation species, but its success at natural regeneration depends on the availability of light. The net photosynthetic rate at light saturation (P sat ) decreased with increasing shading. Nitrogen addition increased P sat in unshaded seedlings but not in 50% and 20% light seedlings. Independent of added N, photosynthetic adjustment to the light environment was regulated by the allocation of N between rubisco and light-harvesting proteins. P sat in full sun was higher with N than without; the difference would be related to changes of stomatal limitation (Ls). With added N, larch seedlings in shade may store extra N in rubisco. Therefore, though Japanese larch is light demanding conifer, at the N level used in this study, shaded Japanese larch seedlings can regenerate in forest floor.

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Section: Discussionmentioning

confidence: 95%

“…N allocation to rubisco was calculated as follows (Niinemets and Tenhunen, 1997;Wilson et al, 2000;Kitaoka and Koike, 2004):…”

Section: Needle Traitsmentioning

confidence: 99%

Effect of nitrogen loading on the growth and photosynthetic responses of Japanese larch seedlings grown under different light regimes

Mao

Watanabe

et al. 2015

J. Agric. Meteorol.

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“…Plants alter how they partition N within the photosynthetic apparatus depending on growth conditions, e.g., the light environment (Kitaoka and Koike, 2004). In shaded conditions, more leaf N is allocated to Chl to enhance light capture, whereas, in sunny conditions, more leaf N is invested in Rubisco to increase carbon fixation (Kimura et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents

Liu

Yang

2012

J. Soil Sci. Plant Nutr.

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A chlorophyll meter can conveniently estimate foliar chlorophyll and nitrogen (N) contents in many species. The objective of this study was to evaluate the utility of a chlorophyll meter to inform nitrogen fertilization rates of tea (Camellia sinensis L.) at different places and times. Plot-scale (5 × 20 m) experiments with three replications were conducted in 2010. Each plot was treated with 248 kg pure N ha -1 per year as urea. At the same time, a field-scale (32 ha) experiment, with the same fertilization rate, was conducted at the same plantation. Tea leaves were sampled in August and November and analyzed with a chlorophyll meter in situ and in the lab. The chlorophyll and nitrogen contents and chlorophyll meter (SPAD) readings of tea leaves in August were greater than in November, and plot-scale values were greater than field-scale values. SPAD readings could estimate the chlorophyll content of tea leaves regardless of temporal and spatial considerations. However, space and time must be considered when using SPAD readings to estimate the nitrogen content of tea leaves.

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“…The value of N2 was estimated from gas exchange characteristics according to the following equation (Kitaoka and Koike, 2004;Takashima et al, 2004):…”

Section: Estimation Of Nitrogen Allocation To Photosynthetic Functionsmentioning

confidence: 99%

Photosynthetic traits of Siebold's beech and oak saplings grown under free air ozone exposure in northern Japan

Watanabe

Hoshika

Inada

et al. 2013

Environmental Pollution

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We set up a free-air ozone (O 3 ) exposure system for determining the photosynthetic responses of Siebold's beech (Fagus crenata) and oak (Quercus mongolica var. crispula) to O 3 under field conditions. Ten-year-old saplings of beech and oak were exposed to an elevated O 3 concentration (60 nmol mol -1 ) during daytime from 6 August to 11 November 2011. Ozone significantly reduced the net photosynthetic rate in leaves of both species in October, by 46% for beech and 15% for oak. In beech there were significant decreases in maximum rate of carboxylation, maximum rate of electron transport in photosynthesis, nitrogen content and photosynthetic nitrogen use efficiency, but not in oak. Stomatal limitation of photosynthesis was unaffected by O 3 . We therefore concluded photosynthesis in beech is more sensitive to O 3 than that in oak, and the O 3 -induced reduction of photosynthetic activity in beech was due not to stomatal closure, but to biochemical limitation. Capsule:Photosynthesis of beech is more sensitive to free air ozone exposure than that of oak

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Invasion of broad‐leaf tree species into a larch plantation: seasonal light environment, photosynthesis and nitrogen allocation

Cited by 53 publications

References 51 publications

Effect of nitrogen loading on the growth and photosynthetic responses of Japanese larch seedlings grown under different light regimes

Effect of nitrogen loading on the growth and photosynthetic responses of Japanese larch seedlings grown under different light regimes

Using a chlorophyll meter to estimate tea leaf chlorophyll and nitrogen contents

Photosynthetic traits of Siebold's beech and oak saplings grown under free air ozone exposure in northern Japan

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