Failure of corn leaves to acclimate to low irradiance. Role of protochlorophyllide reductase in regulating levels of five chlorophyll-binding proteins

Bennett, John; Schwender, James R.; Shaw, Elizabeth K.; Tempel, Neal; Ledbetter, Myron C.; Williams, R. Stanley

doi:10.1016/0005-2728(87)90254-4

Cited by 15 publications

(11 citation statements)

References 40 publications

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“…The pea embryo is exposed to light during its development and contains chloroplasts along with chlorophyllous pigments; however, when the pea seed germinates in the dark, chloroplasts are passed via cell division into cells of the lowermost regions of the epicotyl, and the cells contain simultaneously Chl-s and Pchlide (Böddi et al 1999). In addition, protochlorophyllous and Chlide pigments can accumulate and PLBs develop in young tissues exposed to low light intensities (TreVry 1973;Bennett et al 1987;Solymosi et al 2007;Schoefs and Franck 2008; for reviews, see Schoefs 2008, 2010). The high Chlide/Chl ratio (Table 1c) is characteristic for etiolated tissues greened at low intensities of white or red light, while it is smaller than 0.1 in green tissues (TreVry 1973).…”

Section: Discussionmentioning

confidence: 97%

High biological variability of plastids, photosynthetic pigments and pigment forms of leaf primordia in buds

Solymosi

Morandi

Bóka

et al. 2011

Planta

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To study the formation of the photosynthetic apparatus in nature, the carotenoid and chlorophyllous pigment compositions of differently developed leaf primordia in closed and opening buds of common ash (Fraxinus excelsior L.) and horse chestnut (Aesculus hippocastanum L.) as well as in closed buds of tree of heaven (Ailanthus altissima P. Mill.) were analyzed with HPLC. The native organization of the chlorophyllous pigments was studied using 77 K fluorescence spectroscopy, and plastid ultrastructure was investigated with electron microscopy. Complete etiolation, i.e., accumulation of protochlorophyllide, and absence of chlorophylls occurred in the innermost leaf primordia of common ash buds. The other leaf primordia were partially etiolated in the buds and contained protochlorophyllide (0.5-1 μg g(-1) fresh mass), chlorophyllides (0.2-27 μg g(-1) fresh mass) and chlorophylls (0.9-643 μg g(-1) fresh mass). Etio-chloroplasts with prolamellar bodies and either regular or only low grana were found in leaves having high or low amounts of chlorophyll a and b, respectively. After bud break, etioplast-chloroplast conversion proceeded and the pigment contents increased in the leaves, similarly to the greening processes observed in illuminated etiolated seedlings under laboratory conditions. The pigment contents and the ratio of the different spectral forms had a high biological variability that could be attributed to (i) various light conditions due to light filtering in the buds resulting in differently etiolated leaf primordia, (ii) to differences in the light-exposed and inner regions of the same primordia in opening buds due to various leaf folding, and (iii) to tissue-specific slight variations of plastid ultrastructure.

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Section: Discussionmentioning

confidence: 97%

High biological variability of plastids, photosynthetic pigments and pigment forms of leaf primordia in buds

Solymosi

Morandi

Bóka

et al. 2011

Planta

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“…Regarding this parameter, the comparative study of Bennett et al (1987) is very important, because it clearly shows that PLBs are formed, when the light intensity reaching the leaf surface is below a certain threshold (for young maize leaves: 10 lmol s -1 m 2 ), while above this light intensity they are not present. A similar phenomenon was observed when etiolated seedlings that started to green under low-light conditions were transferred to a higher light intensity (Henningsen and Boynton 1970;Wrischer 1966).…”

Section: Darkness or Low Lightmentioning

confidence: 99%

Etioplast and etio-chloroplast formation under natural conditions: the dark side of chlorophyll biosynthesis in angiosperms

2010

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Chloroplast development is usually regarded as proceeding from proplastids. However, direct or indirect conversion pathways have been described in the literature, the latter involving the etioplast or the etio-chloroplast stages. Etioplasts are characterized by the absence of chlorophylls (Chl-s) and the presence of a unique inner membrane network, the prolamellar body (PLB), whereas etio-chloroplasts contain Chl-s and small PLBs interconnected with chloroplast thylakoids. As etioplast development requires growth in darkness for several days, this stage is generally regarded as a nonnatural pathway of chloroplast development occurring only under laboratory conditions. In this article, we have reviewed the data in favor of the involvement of etioplasts and etio-chloroplasts as intermediary stage(s) in chloroplast formation under natural conditions, the molecular aspects of PLB formation and we propose a dynamic model for its regulation.

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“…The physiological response to variations in light intensity, variously called sun-shade-, light-shade-, or photoadaptation, is a reversible phenomenon that results in an adjustment of the pigment composition, absorption cross-section, and minimal turnover time for electron transport from water to C02, which leads to an optimization of light harvesting and energy conversion capacity of the photosynthetic apparatus (3,5 grow in the shade (2), whereas the tropical rain forest plant, Alocasia macrorhiza, cannot tolerate full sun (3). In contrast, most algae have evolved a physiological plasticity that allows them to photoadapt to wide variations in light intensity (5,8).…”

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confidence: 99%

Light Intensity-Induced Changes in cab mRNA and Light Harvesting Complex II Apoprotein Levels in the Unicellular Chlorophyte Dunaliella tertiolecta

LaRoche

Mortain‐Bertrand

Falkowski³

1991

Plant Physiol.

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During a transition from high growth irradiance (700 micromoles quanta per square meter per second) to low growth irradiance (70 micromoles quanta per square meter per second), the unicellular marine chlorophyte Dunaliella tertiolecta Butcher increases the cellular pool size of the light-harvesting complex of photosystem 11 (LHC II). We showed that the increase in LHC II apoproteins and in chlorophyll content per cell is preceded by an approximately fourfold increase in cab mRNA. The increase in cab mRNA is detectable within 1.5 hours following a shift from high to low light intensity. An increase in the relative abundance of cab mRNA was also found following a shift from high light to darkness and from high light to low light in the presence of gabaculine, a chlorophyll synthesis inhibitor. However, the LHC II apoproteins did not accumulate in the latter experiments, suggesting that LHC 11 apoprotein synthesis is coupled to chlorophyll synthesis at or beyond translation. We propose that changes in energy balance brought about by a change in light intensity may control a regulatory factor acting to repress cab mRNA expression in high light.Variations in light intensity often have profound effects on the organization and function ofthe photosynthetic apparatus of both mature higher plants and algae (4, 8, 9, 19

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Failure of corn leaves to acclimate to low irradiance. Role of protochlorophyllide reductase in regulating levels of five chlorophyll-binding proteins

Cited by 15 publications

References 40 publications

High biological variability of plastids, photosynthetic pigments and pigment forms of leaf primordia in buds

High biological variability of plastids, photosynthetic pigments and pigment forms of leaf primordia in buds

Etioplast and etio-chloroplast formation under natural conditions: the dark side of chlorophyll biosynthesis in angiosperms

Light Intensity-Induced Changes in cab mRNA and Light Harvesting Complex II Apoprotein Levels in the Unicellular Chlorophyte Dunaliella tertiolecta

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