Intercellular CO2 concentration and water-use efficiency of temperate plants with different life-forms and from different microhabitats

Yoshie, Fumio

doi:10.1007/bf01036741

Cited by 60 publications

(22 citation statements)

References 10 publications

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“…However, in most cases, the stomatal conductance was proportional to A area , suggesting a small variation in C i . Determining C i of 27 temperate species with different life-forms and from different microhabitats, Yoshie (1986) found that values of C i observed in those species were similar to each other and in the range of values obtained in other studies. Poorter and Farquhar (1994) and Poorter and Evans (1998) reported that the C i /C a ratio was neither correlated with relative growth rates, LMA, nor PNUE.…”

Section: Co 2 Diffusionsupporting

confidence: 62%

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Interspecific difference in the photosynthesis?nitrogen relationship: patterns, physiological causes, and ecological importance

2004

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The photosynthesis-nitrogen relationship is significantly different among species. Photosynthetic capacity per unit leaf nitrogen, termed as photosynthetic nitrogen-use efficiency (PNUE), has been considered an important leaf trait to characterise species in relation to their leaf economics, physiology, and strategy. In this review, I discuss (1) relations between PNUE and species ecology, (2) physiological causes and (3) ecological implications of the interspecific difference in PNUE. Species with a high PNUE tend to have high growth rates and occur in disturbed or high productivity habitats, while those with a low PNUE occur in stressful or low productivity habitats. PNUE is an important leaf trait that correlates with other leaf traits, such as leaf mass per area (LMA) and leaf life span, irrespective of life form, phylogeny, and biomes. Various factors are involved in the interspecific difference. In particular, nitrogen allocation within leaves and the mesophyll conductance for CO(2) diffusion are important. To produce tough leaves, plants need to allocate more biomass and nitrogen to make thick cell walls, leading to a reduction in the mesophyll conductance and in nitrogen allocation to the photosynthetic apparatus. Allocation of biomass and nitrogen to cell walls may cause the negative relationship between PNUE and LMA. Since plants cannot maximise both PNUE and leaf toughness, there is a trade-off between photosynthesis and persistence, which enables the existence of species with various leaf characteristics on the earth.

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Section: Co 2 Diffusionsupporting

confidence: 62%

“…Yoshie 1986;Reich et al 1991aReich et al , 1992Reich et al , 1999. However, in most cases, the stomatal conductance was proportional to A area , suggesting a small variation in C i .…”

Section: Co 2 Diffusionmentioning

confidence: 88%

Interspecific difference in the photosynthesis?nitrogen relationship: patterns, physiological causes, and ecological importance

2004

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“…In some studies, C i was similar among species irrespective of photosynthetic capacity (e.g., Yoshie 1986;Poorter and Farquhar 1994;Poorter and Evans 1998), whereas in other studies it was lower in species with low PNUE (Hikosaka et al 1998;Warren and Adams 2004b). In the Glopnet survey, C i tended to be lower in species with lower photosynthetic capacity or higher LMA (Wright et al 2004).…”

Section: Resultsmentioning

confidence: 79%

The role of Rubisco and cell walls in the interspecific variation in photosynthetic capacity

2009

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Photosynthetic capacity is known to vary considerably among species. Its physiological cause and ecological significance have been one of the most fundamental questions in plant ecophysiology. We studied the contents of Rubisco (a key enzyme of photosynthesis) and cell walls in leaves of 26 species with a large variation in photosynthetic rates. We focused on photosynthetic nitrogen-use efficiency (PNUE, photosynthetic rate per nitrogen), which can be expressed as the product of Rubisco-use efficiency (RBUE, photosynthetic rate per Rubisco) and Rubisco nitrogen fraction (RNF, Rubisco nitrogen per total leaf nitrogen). RBUE accounted for 70% of the interspecific variation in PNUE. The variation in RBUE was ascribed partly to stomatal conductance, and other factors such as mesophyll conductance and Rubisco kinetics might also be involved. RNF was also significantly related to PNUE but the correlation was relatively weak. Cell wall nitrogen fraction (WNF, cell wall nitrogen per total leaf nitrogen) increased with increasing leaf mass per area, but there was no correlation between RNF and WNF. These results suggest that nitrogen allocation to cell walls does not explain the variation in PNUE. The difference in PNUE was not caused by a sole factor that was markedly different among species but by several factors each of which was slightly disadvantageous in low PNUE species.

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“…We assumed a constant ratio of C i to the CO 2 concentration of ambient air, C a , i.e., 0.75 = C i /C a (Yoshie 1986). Thus, C e and O e were calculated using the temperature responses of the solubility for these gases (Edwards and Walker 1983), atmospheric pressure P (kPa), C a e and O 2 concentrations of the ambient air.…”

Section: Modelsmentioning

confidence: 99%

“…Symbols indicate K0100 (filled symbol) and F2250 (unfilled symbol). A n370 and C e were calculated from e, g i , and R d , employing the assumption that the ratio of C i to CO 2 concentration of ambient air is 0.75 (Yoshie 1986). Bars indicate standard error (SE; n = 5) significant (t-test; p = 0.14).…”

Section: Temperature Response Of G I In Fallopia Japonicamentioning

confidence: 99%

Effects of internal conductance and Rubisco on the optimum temperature for leaf photosynthesis in Fallopia japonica growing at different altitudes

Sakata

Nakano

Kachi

2014

Ecological Research

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To investigate mechanisms of adjustment of the optimum temperature for leaf photosynthesis in alpine plants, we compared the temperature responses of photosynthesis, internal conductance (g i ), and the amounts of activated Rubisco (e) in two Fallopia japonica populations growing at elevations of 100 m (K0100), and 2250 m (F2250). There was an obvious difference in photosynthesis at high temperatures between the two populations, although there was no significant difference in the CO 2 /O 2 specificity of Rubisco. Optimum temperatures for photosynthesis were 25 and 30°C in F2250 and K0100, respectively. The temperature response of e was similar to that of photosynthesis. The mean values of e decreased 25 % (F2250) and 24 % (K0100), for temperatures 5°C above the optimum for photosynthesis. In contrast, g i exponentially increased with increasing temperature in both populations. There was no significant difference in g i between populations for any given temperature. In both populations, there were no changes in CO 2 concentrations at the Rubisco active site, when temperatures were above the photosynthetic optimum temperature. This clearly shows that photosynthetic optimum temperatures were not affected by photosynthetic limitation of CO 2 diffusing from intercellular air spaces to Rubisco. Furthermore, the atmospheric pressure had a minor effect on the temperature response of photosynthesis. Thus, the decrease in e in response to elevated temperatures reduced the photosynthetic optimum temperature in highland population of F. japonica, which was adjusted to the habitat.

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Intercellular CO2 concentration and water-use efficiency of temperate plants with different life-forms and from different microhabitats

Cited by 60 publications

References 10 publications

Interspecific difference in the photosynthesis?nitrogen relationship: patterns, physiological causes, and ecological importance

Interspecific difference in the photosynthesis?nitrogen relationship: patterns, physiological causes, and ecological importance

The role of Rubisco and cell walls in the interspecific variation in photosynthetic capacity

Effects of internal conductance and Rubisco on the optimum temperature for leaf photosynthesis in Fallopia japonica growing at different altitudes

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