Lichtfeld und Blattfarbstoffe I

Seybold, A.; Egle, K.

doi:10.1007/bf01914537

Cited by 103 publications

(18 citation statements)

References 6 publications

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“…The absence of photosynthesis in the orchid was reported by Drude (1873) and repeatedly confirmed both through evidence of the lack of critical light-harvesting pigments (Wilschke, 1914;Seybold & Egle, 1937;Montfort & Küsters, 1940;Reznik, 1958;Reznik et al , 1969;Pfeifhofer, 1989), lack of carbon fixation (Montfort & Küsters, 1940;Reznik, 1958;Hudak et al , 1997), and absence of O 2 evolution in light (Menke & Schmid, 1976). The absolute dependence of N. nidus-avis on myco-heterotrophic carbon assimilation from its fungal partners is therefore not in doubt, but neither the processes of symbiotic germination nor the chronology of seedling development have been reliably established and the identity of the fungal partner(s) remains unclear.…”

Section: Introductionsupporting

confidence: 55%

Symbiotic germination and development of the myco‐heterotrophic orchid Neottia nidus‐avis in nature and its requirement for locally distributed Sebacina spp.

et al. 2002

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Summary• Symbiotic germination and development of the fully myco-heterotrophic orchid Neottia nidus-avis were studied in 'packets' of seed placed adjacent to, or at varying distances from, adult plants in a Fagus sylvatica woodland.• The distribution and identity of the fungal partner(s) of N. nidus-avis were investigated by internal transcribed spacer (ITS)-restriction fragment length polymorphism (RFLP) and sequence analysis of part of the 28S gene in fungal DNA extracted from adult plants from the UK and Germany, and from seedlings germinated in situ .• Germination commenced in the spring, but only in the presence of a specific fungus, and occurred most frequently in plots containing adults of N. nidus-avis . Seedlings grew best in packets in which a large number of seeds germinated. Adults and seedlings of UK origin contained the same fungal partner whose 28S sequence most closely matched Sebacina dimitica. Plants of German origin contained a closely related, but distinct, fungus.• The results provide the first definitive chronology of the development of N. nidus-avis and establish its critical dependence upon, and specificity for, the locally distributed Sebacina -like fungus that is required for germination and growth.

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Section: Introductionsupporting

confidence: 55%

Symbiotic germination and development of the myco‐heterotrophic orchid Neottia nidus‐avis in nature and its requirement for locally distributed Sebacina spp.

et al. 2002

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“…Buschmann et al (1978) as weH as investigated the development of chloroplasts from etioplasts in seedlings of Hordeum vulgare and Raphanus sativus under weak blue and red light conditions (5.5 J-Lmol m-2 S-I). They found that under blue light conditions the content of prenylquinones and the ratio of Chl a/Chl b was higher and the ratio of xanthophyll/ carotene was lower than under red light conditions (see Seybold and Egle 1937). The assay ofHill activity showed that "blue light" chloroplasts had a higher activity than "red light" chloroplasts.…”

Section: Discussionmentioning

confidence: 93%

The Effect of Blue and Red Light on the Content of Chlorophyll, Cytochrome f, Soluble Reducing Sugars, Soluble Proteins and the Nitrate Reductase Activity During Growth of the Primary Leaves of Sinapis alba

Wild

Holzapfel

1980

The Blue Light Syndrome

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“…The higher fo level of LL-cotyledons thus light on indicates a greater proportion of light-harvesting chlorophyll a//>-proteins which further supports the data in Table II. More antenna chlorophylls and a larger size of the photosynthetic units are also found in shade leaves of the beech which possess higher fo and fp levels than the sun leaves [2,6], Prenylpigment ratios as indicators: The different ratios of chlorophyll a /b and of xanthophylls to ß-carotene (x/c) in sun and shade leaves of trees had already been recognized by Willstätter and Stoll 1913 [7] and Seybold and Egle 1937 [26]. The same differences are also found between leaves from HL and LL plants [1,2,8].…”

Section: Light-induced Changes In Chlorophyll-protein Levelsmentioning

confidence: 98%

Adaptation of Chloroplast-Ultrastructure and of Chlorophyll- Protein Levels to High-Light and Low-Light Growth Conditions

Lichtenthaler

Kuhn

Prenzel

et al. 1982

Zeitschrift Für Naturforschung C

158

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Adaptation of Chloroplasts, Chlorophyll Fluorescence, Chlorophyll a-Proteins, Chloroplast Ultrastructure, High-Light ChloroplastsIn saturating light radish seedlings grown in high-light growth conditions (90 W • n r 2) possess a much higher photosynthetic capacity on a chlorophyll and leaf area basis than the low-light grown plants (10 W • m-2). The higher C 0 2-fixation rate o f HL-plants is due to the presence of HL-chloroplasts which possess a different ultrastructure and also different levels o f the individual chlorophyll-carotenoid-proteins than the LL-chloroplasts of LL-seedlings. 1. Ultrastructure: The high-light adapted chloroplasts are characterized by fewer photo synthetic membranes per chloroplast section, by low grana stacks (only few thylakoids per granum), a lower stacking degree o f thylakoids, a higher proportion o f non-appressed mem branes (stroma thylakoids + end grana membranes) and a high starch content. The LL-chloro plasts possess no starch, their grana stacks are higher (up to 17 thylakoids per granum) and also significantly broader than that o f HL-chloroplasts. 2. Chlorophyll-proteins: The photosynthetic apparatus o f HL-chloroplasts contains a larger proportion of chlorophyll a-proteins of photosystem I (CPIa + CPI) and of photosystem II (CPa, the presumable reaction center o f PS II) than the LL-chloroplasts which possess a higher propor tion of light-harvesting chlorophyll a/fc-proteins (LHCP,, LHCP2, LHCP3, LHCPy). The higher levels of LHCPs in LL-plants are associated with a higher ground fluorescence fo and maximum fluorescence fp of the in vivo chlorophyll. Chlorophyll and carotenoid ratios: The chloroplasts o f HL-plants possess a higher proportion of chlorophyll a and /2-carotene (higher values for the ratios chlorophyll a /b and lower values for a/c and x /c ) which reflect the increased level o f the chlorophyll a//?-carotene-proteins CPIa, CPI and CPa. The higher level o f light-harvesting chlorophyll a/6-xanthophyll-proteins (LHCPs) in LL-plants is also indicated by an increased content o f xanthophylls and chlorophyllb as seen from lower a /b and higher x /c and a /c ratios. 4. The results indicate that plants possess the capacity for an ontogenetic adaptation o f their photosynthetic apparatus to the incident light intensity. The HL-chloroplasts o f HL-plants which contain less antenna chlorophyll, are adapted for a more efficient photosynthetic quantum conversion at light saturation than the LL-chloroplasts with high grana stacks. The correlation between higher levels o f light-harvesting chlorophyll ö/6-proteins (LHCPs) and a higher stacking degree of thylakoids, and the involvement o f LHCPs in stacking is discussed. Abbreviations: a/b, ratio chlorophyll a/b', a /c, weight ratio chlorophyll a to /^-carotene, CPI and CPIa, the two P700 containing chlorophyll a /?-carotene-proteins o f photosys tem I; CPa, chlorophyll a /?-carotene-protein o f photosys tem II, c/x, ratio /?-carotene/xanthophylls; fo, ground fluo rescence of the in vivo chlorophyll fluorescence; fp, maxi ...

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Lichtfeld und Blattfarbstoffe I

Cited by 103 publications

References 6 publications

Symbiotic germination and development of the myco‐heterotrophic orchid Neottia nidus‐avis in nature and its requirement for locally distributed Sebacina spp.

Symbiotic germination and development of the myco‐heterotrophic orchid Neottia nidus‐avis in nature and its requirement for locally distributed Sebacina spp.

The Effect of Blue and Red Light on the Content of Chlorophyll, Cytochrome f, Soluble Reducing Sugars, Soluble Proteins and the Nitrate Reductase Activity During Growth of the Primary Leaves of Sinapis alba

Adaptation of Chloroplast-Ultrastructure and of Chlorophyll- Protein Levels to High-Light and Low-Light Growth Conditions

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