Chlorophyll Catabolism and Leaf Coloration

Hörtensteiner, Stefan; Lee, David W.

doi:10.1002/9780470988855.ch2

Cited by 18 publications

(16 citation statements)

References 144 publications

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“…The presence of ester functions at the propionyl side chain in this 'persistent' FCC and the detection of lesser amounts of NCCs in yellow Sw-leaves, are both in line with the hypothesis on the natural transformation of FCCs to NCCs [21,22]: In senescent leaves, NCCs are indicated to result in the acidic medium of the vacuoles from a rapid stereo-selective isomerization of FCCs, which is accelerated by their free propionic acid group [4,19]. Indeed, NCCs, the non-fluorescent tetrapyrrolic 'end' products of Chlbreakdown carry a propionic acid group and are found in the vacuoles [3,29].…”

Section: Discussionsupporting

confidence: 85%

“…wallisii were examined for their Chl-catabolites and FCC was found to accumulate prominently. In most earlier investigations of senescent leaves, FCCs were only observed as minor components and as transient precursors of NCCs [4,15,22,23]. The main FCC from Sw-leaves, named Sw-FCC-62, was remarkably abundant (>13% of the Chl in a green leaf).…”

Section: Discussionmentioning

confidence: 94%

“…[22]). Polar FCCs were thus suggested to arise from pFCC (or epipFCC) before their transport into the vacuole [4,22]. Hydroxylation at C (8 2 ) mary FCCs (pFCC or epi-pFCC).…”

Section: Discussionmentioning

confidence: 99%

“…Hydroxylation at C (8 2 ) mary FCCs (pFCC or epi-pFCC). This chemically demanding reaction is indicated by the structures of (the correspondingly functionalized) NCCs to occur in senescent leaves very effectively, and only minute amounts of pFCCs (or 'pNCCs', their isomerisation products) are detectable in the extracts [4,22]. The hydroxylating enzyme has not been identified, but it has been suggested to be active in the cytosol, or even in the gerontoplast (see Fig.…”

Section: Discussionmentioning

confidence: 99%

“…A sample of Sw-NCC-58 was isolated and characterized similarly (see below and SuppMat). and the red Chl-catabolite (RCC) to the 'primary' fluorescent Chl-catabolite (pFCC), or its (C-1)-epimer, epi-pFCC [4,22]. FCCs with a free propionic acid group are indicated to be imported into the vacuole and to isomerize rapidly to nonfluorescent Chl-catabolites (NCCs), such as Hv-NCC-1.…”

Section: Extraction and Isolation Of Chl-catabolitesmentioning

confidence: 99%

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A novel blue fluorescent chlorophyll catabolite accumulates in senescent leaves of the peace lily and indicates a split path of chlorophyll breakdown

Kräutler¹,

Banala²,

Moser³

et al. 2010

FEBS Letters

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a b s t r a c tColorless, non-fluorescent Chl-catabolites (NCCs) are the typical, ubiquitous products of chlorophyll (Chl)-breakdown in senescent leaves. However, a fluorescent Chl-catabolite (FCC) accumulated in de-greened leaves of Spathiphyllum wallisii (Peace Lily), which showed a weak blue luminescence. The FCC, named Sw-FCC-62, was 'hypermodified' with an unprecedented 6-(2-[3,4-dihydroxy-phenyl]-ethyl)-b-glucopyranosidyl ester at the propionyl group. Such esters stabilize FCCs against their typical and rapid, spontaneous isomerization to NCCs. Chl-breakdown in Sp. wallisii thus branches off from the 'common' path in leaves, and furnishes unique and 'persistent' FCCs. Our findings on 'hypermodified' FCCs also call for attention as to possible physiological roles of Chl-catabolites in plants.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 94%

“…[22]). Polar FCCs were thus suggested to arise from pFCC (or epipFCC) before their transport into the vacuole [4,22]. Hydroxylation at C (8 2 ) mary FCCs (pFCC or epi-pFCC).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Extraction and Isolation Of Chl-catabolitesmentioning

confidence: 99%

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A novel blue fluorescent chlorophyll catabolite accumulates in senescent leaves of the peace lily and indicates a split path of chlorophyll breakdown

Kräutler¹,

Banala²,

Moser³

et al. 2010

FEBS Letters

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Ein Dioxobilan als Produkt eines divergenten Chlorophyllabbaus in Spitzahorn

et al. 2011

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Bunte Blätter: Ein farbloser Chlorophyllkatabolit wurde in den seneszenten Blättern des Spitzahorns entdeckt. Es handelt es sich um ein Dioxobilan, ein Tetrapyrrol, das ein Mesokohlenstoffatom der hypothetischen Chlorophyllvorstufe verloren hat. Die Konfiguration dieses Kataboliten deckt einen Abbauweg von Chlorophyll im Spitzahorn auf, der sich von dem in seneszenten Blättern anderer höherer Pflanzen unterscheidet.

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