Photosynthesis, ribulose-1,5-bisphosphate carboxylase and leaf characteristics of Nicotiana tabacum L. genotypes selected by survival at low CO2 concentrations

Lancaster Environment Centre

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https://doi.org/10.1093/jxb/44.1.1
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Keywords

Genotypes, Leaf anatomy, Photosynthesis, Ribulose-1,5-bisphosphate carboxylase, Tobacco

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Photosynthesis, ribulose-1,5-bisphosphate carboxylase and leaf characteristics of Nicotiana tabacum L. genotypes selected by survival at low CO2 concentrations. / Delgado, Esteban; Parry, Martin A. J.; Lawlor, David W. et al.
In: Journal of Experimental Botany, Vol. 44, No. 1, 01.1993, p. 1-7.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{1e9b54c306244f91b135c79a5bedd238,

title = "Photosynthesis, ribulose-1,5-bisphosphate carboxylase and leaf characteristics of Nicotiana tabacum L. genotypes selected by survival at low CO2 concentrations",

abstract = "The photosynthetic characteristics (responses to CO2 and light), ribulose-1,5-bisphosphate carboxylase (Rubisco) properties, and the size and number of cells of the mesophyll of Nicotiana tabacum L. leaves of genotypes selected for survival at low atmospheric CO2 concentrations are described. When grown in the greenhouse with nutrient solutions, the total dry matter production of the selected genotypes was 23% greater than that of the parent genotype; this increase was related to a greater number of mesophyll cells of smaller size in the selected plants compared to the parent. However, it was not related to changes in the photosynthetic characteristics nor to Rubisco properties. These results suggest that the increased dry matter accumulation of the selected genotypes is not due to a reduction in photorespiration nor an increase in the CO2 assimilation rates. Rather, the selection of haploid tobacco plantlets in low CO2 has resulted in plants with greater leaf area (shown in previous work), due to the production of more cells of smaller size and to lower respiration rates per unit of leaf dry mass (previous work), thus increasing light capture, reducing the loss of assimilates and increasing total plant dry matter production.",

keywords = "Genotypes, Leaf anatomy, Photosynthesis, Ribulose-1,5-bisphosphate carboxylase, Tobacco",

author = "Esteban Delgado and Parry, {Martin A. J.} and Lawlor, {David W.} and Keys, {Alfred J.} and Hipolito Medrano",

year = "1993",

month = jan,

doi = "10.1093/jxb/44.1.1",

language = "English",

volume = "44",

pages = "1--7",

journal = "Journal of Experimental Botany",

issn = "0022-0957",

publisher = "OXFORD UNIV PRESS",

number = "1",

}

RIS

TY - JOUR

T1 - Photosynthesis, ribulose-1,5-bisphosphate carboxylase and leaf characteristics of Nicotiana tabacum L. genotypes selected by survival at low CO2 concentrations

AU - Delgado, Esteban

AU - Parry, Martin A. J.

AU - Lawlor, David W.

AU - Keys, Alfred J.

AU - Medrano, Hipolito

PY - 1993/1

Y1 - 1993/1

N2 - The photosynthetic characteristics (responses to CO2 and light), ribulose-1,5-bisphosphate carboxylase (Rubisco) properties, and the size and number of cells of the mesophyll of Nicotiana tabacum L. leaves of genotypes selected for survival at low atmospheric CO2 concentrations are described. When grown in the greenhouse with nutrient solutions, the total dry matter production of the selected genotypes was 23% greater than that of the parent genotype; this increase was related to a greater number of mesophyll cells of smaller size in the selected plants compared to the parent. However, it was not related to changes in the photosynthetic characteristics nor to Rubisco properties. These results suggest that the increased dry matter accumulation of the selected genotypes is not due to a reduction in photorespiration nor an increase in the CO2 assimilation rates. Rather, the selection of haploid tobacco plantlets in low CO2 has resulted in plants with greater leaf area (shown in previous work), due to the production of more cells of smaller size and to lower respiration rates per unit of leaf dry mass (previous work), thus increasing light capture, reducing the loss of assimilates and increasing total plant dry matter production.

AB - The photosynthetic characteristics (responses to CO2 and light), ribulose-1,5-bisphosphate carboxylase (Rubisco) properties, and the size and number of cells of the mesophyll of Nicotiana tabacum L. leaves of genotypes selected for survival at low atmospheric CO2 concentrations are described. When grown in the greenhouse with nutrient solutions, the total dry matter production of the selected genotypes was 23% greater than that of the parent genotype; this increase was related to a greater number of mesophyll cells of smaller size in the selected plants compared to the parent. However, it was not related to changes in the photosynthetic characteristics nor to Rubisco properties. These results suggest that the increased dry matter accumulation of the selected genotypes is not due to a reduction in photorespiration nor an increase in the CO2 assimilation rates. Rather, the selection of haploid tobacco plantlets in low CO2 has resulted in plants with greater leaf area (shown in previous work), due to the production of more cells of smaller size and to lower respiration rates per unit of leaf dry mass (previous work), thus increasing light capture, reducing the loss of assimilates and increasing total plant dry matter production.

KW - Genotypes

KW - Leaf anatomy

KW - Photosynthesis

KW - Ribulose-1,5-bisphosphate carboxylase

KW - Tobacco

U2 - 10.1093/jxb/44.1.1

DO - 10.1093/jxb/44.1.1

M3 - Journal article

AN - SCOPUS:0002502961

VL - 44

SP - 1

EP - 7

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 1

ER -

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