Polyamines as markers in sexual reproduction of kiwifruit

Biasi, R.; Franceschetti, Marina; Falasca, Giuseppina; Altamura, M. M.; Bagni, Nello

doi:10.1007/978-3-642-59985-9_4

Cited by 7 publications

(7 citation statements)

References 19 publications

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“…The latter are often conjugated with cell wall components such as hemicelluloses (Markwalder and Neukon 1976). Generally greater insoluble-conjugated polyamines, especially SPD, was related to flower differentiation (Scaramagli et al 1999;Tassoni et al 2000), as observed in kiwi ovaries (Biasi et al 1999), since polyamine interaction with cell wall components can be responsible for a transition from relaxation to rigidity (Berta et al 1997). Our results, in particular when exogenous PAs were supplied in the culture medium, support previous studies.…”

Section: Polyamine Content In Antherssupporting

confidence: 92%

“…Moreover, exogenous SPD induced its endogenous accumulation in anthers. In fact, previous studies demonstrated that SPD is present in a physiologically significant amount that increases during kiwi microsporogenesis (Biasi et al 1999). Spermidine has been implicated in somatic embryogenesis in tissue cultures of Daucus carota, Vigna, Hevea and Panax ginseng in coadjuvated gynogenesis in Allium cepa (Martinez et al 2000) and androgenesis in Solanum tuberosum (Tiainen 1992) and somatic embryogenesis in ginseng (Monteiro et al 2002).…”

Section: Discussionmentioning

confidence: 95%

“…Few data are available for polyamine content in anthers in contrast to those for ovaries (Antognoni et al 2002) and isolated pollen from both in vivo and in vitro culture (Biasi et al 1999). At time zero, SPD was the most abundant among the free PAs detected in anthers (Fig.…”

Section: Polyamine Content In Anthersmentioning

confidence: 92%

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Effect of polyamines on in vitro anther culture of Citrus clementina Hort. ex Tan

Chiancone

Tassoni

Bagni

et al. 2006

Plant Cell Tiss Organ Cult

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The improvement of the induction rate in Citrus anther culture is important for taking practical advantage of the haploid potential in breeding. The influence of polyamines on anther culture of Citrus clementina, cv Nules, with particular attention to the free, soluble and insoluble-conjugated polyamine levels, has been investigated. Putrescine, spermidine and putrescine plus spermidine, were added to the standard induction medium. Before culture, spermidine was the most abundant among the free polyamines detected in anthers. The exogenous supply of either putrescine or spermidine, either independently or combined, effected greater uptake and accumulation of polyamines. The addition of 2 mM spermidine to the medium stimulated gametic embryogenesis in clementine Nules, whereas putrescine did not influence embryo production. Regenerants were mostly tri-haploids; a few doubled-haploids and no haploid plants were obtained. © 2006 Springer Science+Business Media B.V

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Section: Polyamine Content In Antherssupporting

confidence: 92%

Section: Discussionmentioning

confidence: 95%

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Effect of polyamines on in vitro anther culture of Citrus clementina Hort. ex Tan

Chiancone

Tassoni

Bagni

et al. 2006

Plant Cell Tiss Organ Cult

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“…The insoluble conjugated PA (especially Put and Spd) in olive flowers may be related to flower differentiation processes, because PA interaction with cell wall components may be responsible for changes in its rigidity (Berta et al 1997). Similar results were found in kiwi ovaries (Biasi et al 1999) and Arabidopsis (Tassoni et al 2000) flowers. These conjugates are of particular importance both for the regulation of the PA concentration inside the cell as well as for their interaction with cell wall components (Bagni and Tassoni 2001).…”

Section: Discussionsupporting

confidence: 75%

Tissue-specific expression of olive S-adenosyl methionine decarboxylase and spermidine synthase genes and polyamine metabolism during flower opening and early fruit development

Gómez-Jiménez

Paredes

Gallardo

et al. 2010

Planta

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Polyamines (PAs) are required for cell growth and cell division in eukaryotic and prokaryotic organisms. The present study is aimed at understanding the developmental regulation of PA biosynthesis and catabolism during flower opening and early fruit development in relation to fruit size and shape. Two full-length cDNA clones coding for S-adenosyl methionine decarboxylase (SAMDC) and spermidine synthase (SPDS) homologs, key steps in the PA biosynthesis pathway, in the stone-fruit of olive (Olea europaea L.) were identified and the spatial and temporal organization of these genes were described. In olive flowers, OeSAMDC gene transcripts were highly expressed in ovary wall, placenta and ovules, while OeSPDS transcript was confined to the ovules of ovary at anthesis stage. A correlation was detected between the SAMDC enzyme activity/accumulation transcript and spermidine (Spd) and spermine (Spm) levels during flower opening, implying that the synthesis of decarboxylated SAM might be a rate-limiting step in Spd and Spm biosynthesis. OeSAMDC and OeSPDS transcripts were co-expressed in fruit mesocarp and exocarp at all developmental stages analyzed as well as in nucellus, integuments and inner epidermis tissues of fertilized ovules. In contrast, the OeSAMDC and OeSPDS genes had different expression patterns during early fruit development. The results provide novel data about localization of PA biosynthesis gene transcripts, indicating that transcript levels of PA biosynthesis genes are all highly regulated in a developmental and tissue-specific manner. The differences between the two olive cultivars in the fruit size in relation to the differences in the accumulation patterns of PAs are discussed.

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“…In those organs, Pas content has been shown to be related to the processes of cell proliferation, ovule differentiation, embryo sac formation, transcriptional and proteinlevel regulation during pollen-tube emergence and sexual differentiation (Bagni et al 1981;Biasi et al 1999;Song et al 2001). In the styles of 'Housui' Japanese pear (P. pyrifolia), an increase in Pas was observed 20 h after pollination, mainly owing to a significant putrescine increase after self-and cross-pollination; at the same time, an increase in ethylene production was reported (Franco-Mora et al 2005b).…”

Section: Introductionmentioning

confidence: 99%

Putrescine content of Japanese pear (Pyrus pyrifolia) styles increases in response to pollination

Franco-Mora

Tanabe

Tamura

2009

New Zealand Journal of Crop and Horticultural Science

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Although poly amines (Pas) are suggested to be involved in the pollination process, the kinetics of this process in Japanese pear (Pyruspyrifolia) are not currently understood. In this work, the content of putrescine increased (α 0.05) 5 h after in vitro pollination in styles of five different cultivars of Japanese pear. The evolution of spermidine and spermine within the cultivars used was not consistent; whereas spermidine contents decreased, increased, or did not have statistically significant changes (α 0.05), spermine content either decreased or increased. Moreover, the regulation of the ethylene and putrescine responses to pollination seemed to be linked to the cultivar's gynoecious genotype, and was influenced by the pollen source. These results agree with the idea that putrescine increases in the styles during the first few hours after pollination in this species.

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Polyamines as markers in sexual reproduction of kiwifruit

Cited by 7 publications

References 19 publications

Effect of polyamines on in vitro anther culture of Citrus clementina Hort. ex Tan

Effect of polyamines on in vitro anther culture of Citrus clementina Hort. ex Tan

Tissue-specific expression of olive S-adenosyl methionine decarboxylase and spermidine synthase genes and polyamine metabolism during flower opening and early fruit development

Putrescine content of Japanese pear (Pyrus pyrifolia) styles increases in response to pollination

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