Distribution of unesterified and esterified pectins in cell walls of pollen tubes of flowering plants

Li, Y. Q.; Chen, F.; Linskens, H. F.; Cresti, Mauro

doi:10.1007/bf00228487

Cited by 128 publications

(150 citation statements)

References 30 publications

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“…This labeling pattern is similar to the one observed with pollen tubes from other species such as potato, tobacco, petunia, jasmine and corn 8,9 with a dominant localization of the highly methylesterified HG at the tip and the weakly methylesterified HG epitopes behind the tip. These results are consistent with the theoretical model of action of the Pectin Methyl Esterases (PMEs) during pollen tube growth.…”

Section: Cell Wall Polysaccharides In Pollen Tube and Pistilsupporting

confidence: 84%

Pectins in the cell wall ofArabidopsis thalianapollen tube and pistil

Lehner

Dardelle

Soret-Morvan

et al. 2010

Plant Signaling & Behavior

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Section: Cell Wall Polysaccharides In Pollen Tube and Pistilsupporting

confidence: 84%

Pectins in the cell wall ofArabidopsis thalianapollen tube and pistil

Lehner

Dardelle

Soret-Morvan

et al. 2010

Plant Signaling & Behavior

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“…In contrast, angiosperm pollen tube tips are made up almost entirely of esterified pectins (26)(27)(28). Just behind the tip, lateral tube walls become reinforced by deesterification of tip pectins (26,28) and secretion of a callose secondary wall (29,30). This unique pollen tube wall structure is thought to allow faster growth rates than possible in other tip-growing cells because (i) the pectic tip is more plastic and rapidly extensible, (ii) the mature tube cell wall has greater resistance to tension stress because of deesterification of pectins and secretion of callose, and (iii) callose plugs help maintain positive turgor pressure in the growing tip (27,31).…”

Section: Relationship Between Pollen Tube Growth and Carpel Evolutionmentioning

confidence: 99%

“…1 walls lack callose and plugs do not form (19). In contrast, angiosperm pollen tube tips are made up almost entirely of esterified pectins (26)(27)(28). Just behind the tip, lateral tube walls become reinforced by deesterification of tip pectins (26,28) and secretion of a callose secondary wall (29,30).…”

Section: Relationship Between Pollen Tube Growth and Carpel Evolutionmentioning

confidence: 99%

Novelties of the flowering plant pollen tube underlie diversification of a key life history stage

Williams

2008

Proc. Natl. Acad. Sci. U.S.A.

125

154

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The origin and rapid diversification of flowering plants has puzzled evolutionary biologists, dating back to Charles Darwin. Since that time a number of key life history and morphological traits have been proposed as developmental correlates of the extraordinary diversity and ecological success of angiosperms. Here, I identify several innovations that were fundamental to the evolutionary lability of angiosperm reproduction, and hence to their diversification. In gymnosperms pollen reception must be near the egg largely because sperm swim or are transported by pollen tubes that grow at very slow rates (< Ϸ20 m/h). In contrast, pollen tube growth rates of taxa in ancient angiosperm lineages (Amborella, Nuphar, and Austrobaileya) range from Ϸ80 to 600 m/h. Comparative analyses point to accelerated pollen tube growth rate as a critical innovation that preceded the origin of the true closed carpel, long styles, multiseeded ovaries, and, in monocots and eudicots, much faster pollen tube growth rates. Ancient angiosperm pollen tubes all have callosic walls and callose plugs (in contrast, no gymnosperms have these features). The early association of the callose-walled growth pattern with accelerated pollen tube growth rate underlies a striking repeated pattern of faster and longer-distance pollen tube growth often within solid pathways in phylogenetically derived angiosperms. Pollen tube innovations are a key component of the spectacular diversification of carpel (flower and fruit) form and reproductive cycles in flowering plants.heterochrony ͉ key innovation ͉ modularity ͉ origin of angiosperms ͉ evo-devo

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“…By re-imposing di¡erent frequency patterns of Ca 2+ elevation it was observed that natural spike frequency was su¤cient to promote di¡eren-tiation including growth. [Ca 2+ ] c oscillations in pollen tubes are de¢nitely associated with pulses of growth and wall secretion (Li et al 1994;Pierson et al 1996;Messerli & Robinson 1997). While the precise reason for oscillations in the gradient remains unknown, a possible important pointer for future investigation is indicated.…”

Section: (B) Capacitative Ca 2+ Entry and Signallingmentioning

confidence: 99%

Spatial characteristics to calcium signalling; the calcium wave as a basic unit in plant cell calcium signalling

Malhó

Moutinho

Luit

et al. 1998

Phil. Trans. R. Soc. Lond. B

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Many signals that modify plant cell growth and development initiate changes in cytoplasmic Ca 2+ . The subsequent movement of Ca 2+ in the cytoplasm is thought to take place via waves of free Ca 2+ . These waves may be initiated at de¢ned regions of the cell and movement requires release from a reticulated endoplasmic reticulum and the vacuole. The mechanism of wave propagation is outlined, and the possible basis of repetitive wave formation, Ca 2+ oscillations and capacitative Ca 2+ signalling is discussed. Evidence for the presence of Ca 2+ waves in plant cells is outlined, and from studies on raphides it is suggested that the capabilities for capacitative Ca 2+ signalling are also present. The paper ¢nishes with an outline of the possible interrelation between Ca 2+ waves and organelles and describes the intercellular movement of Ca 2+ waves and the relevance of such information communication to plant development.

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Distribution of unesterified and esterified pectins in cell walls of pollen tubes of flowering plants

Cited by 128 publications

References 30 publications

Pectins in the cell wall ofArabidopsis thalianapollen tube and pistil

Pectins in the cell wall ofArabidopsis thalianapollen tube and pistil

Novelties of the flowering plant pollen tube underlie diversification of a key life history stage

Spatial characteristics to calcium signalling; the calcium wave as a basic unit in plant cell calcium signalling

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