Integration of Fhotosynthetic Characteristics during Leaf Development

Šesták, Z.; Tichá, Ingrid; Čatský, F.; Solárová, Jarmila; Pospíšilová, Jana; Hodáňová, Danuáe

doi:10.1007/978-94-009-5530-1_11

Cited by 32 publications

(12 citation statements)

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“…A similar pattern has been found in many species (Thomas and Stoddart, 1980; Šesták et al , 1985; Shirke, 2001). Low A max in newly unfolded leaves is associated with high dark respiration rate and low g s , pigment content, and amount of photosynthetic enzyme (Shirke, 2001).…”

Section: Discussionsupporting

confidence: 85%

Leaf lifetime photosynthetic rate and leaf demography in whole plants of Ipomoea pes-caprae growing with a low supply of calcium, a ‘non-mobile’ nutrient

Suárez

2010

Journal of Experimental Botany

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The adaptive significance of leaf longevity has been established in relation to restrictive nutrients that can be retranslocated within the plant. However, the effect of deficiencies in ‘non-mobile’ nutrients on leaf lifespan and photosynthetic carbon gain is uncertain. Calcium is frequently given as an example of an essential nutrient with low phloem mobility that may alter the leaf senescence process. This study has been designed to estimate leaf lifespan, leaf production (Lp) and leaf death (Ld) rates, the age structure of leaves, and the decline in maximum photosynthetic rate (Amax) with age in plants of Ipomoea pes-caprae growing with a full supply of nutrients and with a low Ca supply. The Ca deficiency produced reductions in Lp and leaf lifespan compared with control plants. In spite of the differences in the demographic parameters between treatments in control and low-Ca plants, the percentage of leaves of a given leaf age class is maintained in such a way that the number of leaves per plant continues to increase. No relationship was found between Ca supply and Amax. However, the decline in Amax with leaf senescence was rather sudden in control plants compared with plants growing with a low Ca supply. The importance of simultaneously using the total leaf demographic census and the assimilation rate along with leaf lifespan data in order to understand the performance of whole plants under constrained conditions is discussed.

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Section: Discussionsupporting

confidence: 85%

Leaf lifetime photosynthetic rate and leaf demography in whole plants of Ipomoea pes-caprae growing with a low supply of calcium, a ‘non-mobile’ nutrient

Suárez

2010

Journal of Experimental Botany

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“…SLA is strongly correlated with leaf thickness in deciduous broad-leaved trees (Šesták et al 1985(Šesták et al , Koike et al 2001a, with high desiccation tolerance, and also with density and leaf gas exchange (e.g. Niinemets et al 2004).…”

Section: --mentioning

confidence: 97%

Photosynthetic water use efficiency in tree crowns of Shorea beccariana and Dryobalanops aromatica in a tropical rain forest in Sarawak, East Malaysia

Kitahashi¹,

Ichie²,

Maruyama³

et al. 2008

Photosynt.

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Photosynthetic water use efficiency (PWUE), stomatal conductance (g s ), and water potential were measured at two different positions in the tree crown of two emergent tropical tree species (Shorea beccariana Burck, Dryobalanops aromatica Gaertn. f.). The trees were about 50 m high, in a tropical rain forest in Sarawak, East Malaysia. In both species, g s at the upper crown position at midday was lower than at the lower crown position, even though both positions were exposed to full sunlight; the difference was greater in S. beccariana. Hydraulic limitation occurs in the upper crown position in both species. A midday depression was observed in the photon saturated photosynthetic rate in both species, especially at the upper crown. However, PWUE was markedly higher in the upper crown than the lower crown at midday, even though no morphological adjustment was observed in the leaves; this difference was greater in S. beccariana.

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“…These anatomical characteristics were also influenced by the change of foliar N content. High N content in a leaf also results in a large SLA, because with increasing thickness the internal leaf porosity increases to reduce diffusion of CO 2 and to use ribulose-1,5-bisphosphate carboxylase/ oxygenase (RuBPCO) effectively (Šesták et al 1985, Field and Mooney 1986, Koike 1988, Lloyd et al 1992, Terashima et al 2001. These anatomical adaptations are also important for the adaptation to environment and give rise to optimal foliar N partitioning (Hikosaka and Terashima 1995, Niinemets 1999, Evans and Poorter 2001.…”

Section: Introductionmentioning

confidence: 97%

“…Not only total foliar N content, the fraction of N investment changes along with irradiance; and in shade (S) there is a lower content and more N selectively invested into chlorophyll (Field and Mooney 1986, Evans 1989, Schulze 1991. In general, plants that grow in low irradiance generally have thin leaves with large specific leaf area (SLA) accompanied by efficiently distributed and well composed chlorophyll (Chl) a/b ratio (Björkman 1981, Šesták et al 1985, Larcher 2003. Difference in irradiance also results in the change of SLA and anatomical change (Evans and Poorter 2001).…”

Section: Introductionmentioning

confidence: 98%

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Effects of nitrogen supply on photosynthetic and anatomical changes in current-year needles of Pinus koraiensis seedlings grown under two irradiances

Makoto

Koike

2007

Photosynt.

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We investigated the responses of photon-saturated photosynthesis rate (P sat ) and its simultaneous acclimation of anatomy and nitrogen use patterns of current needles of Korean pine (Pinus koraiensis) seedlings grown under factorial combinations of two nitrogen levels and irradiances. Although N supply resulted in a significant increase of N content in needles under both irradiances, the increase of P sat tended to be suppressed only in shade (S). The significant increase of P sat in full sunlight (O) was associated with the increase of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) and chlorophyll (Chl) contents. In contrast, small increase of Chl content and no increase of RuBPCO content were found in S (90 % cut of full irradiance), which would result in a small increase of P sat . This result suggests that extra N is stocked in needles under shade for the growth in next season. With N supply, a significant decrease of specific leaf area (SLA) was detected only in O. This decrease of SLA was due to the increase of density of needle. Furthermore, the increase of needle density was not due to the increased number and size of mesophyll cells, but the increased density of each mesophyll cell. Therefore, although SLA changed in O, the change did not involve anatomical adaptation to use increased N effectively, at least observable by light microscopy. Hence, even though the SLA would change, N deposition will improve the photosynthetic capacity of Korean pine seedlings, not through the development of needle anatomy but through improvement of the allocation of N in both irradiances.Additional key words: acclimation; anatomical plasticity; evergreen-species; net photosynthetic rate; nitrogen allocation and deposition; ribulose-1,5-bisphosphate carboxylase/oxygenase; specific leaf area.

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Integration of Fhotosynthetic Characteristics during Leaf Development

Cited by 32 publications

References 0 publications

Leaf lifetime photosynthetic rate and leaf demography in whole plants of Ipomoea pes-caprae growing with a low supply of calcium, a ‘non-mobile’ nutrient

Leaf lifetime photosynthetic rate and leaf demography in whole plants of Ipomoea pes-caprae growing with a low supply of calcium, a ‘non-mobile’ nutrient

Photosynthetic water use efficiency in tree crowns of Shorea beccariana and Dryobalanops aromatica in a tropical rain forest in Sarawak, East Malaysia

Effects of nitrogen supply on photosynthetic and anatomical changes in current-year needles of Pinus koraiensis seedlings grown under two irradiances

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