Journal Article10.1071/BT10152
Late-acting self-incompatibility in Acca sellowiana (Myrtaceae)
Taciane Finatto,Karine Louise dos Santos,Neusa Steiner,Leon Bizzocchi,Daniel Ferreira Holderbaum,Jean Pierre Henry Joseph Ducroquet,Miguel Pedro Guerra,Rubens Onofre Nodari +7 more
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TL;DR: This study indicates late-acting self-incompatibility occurring through the rejection/abscission of self-pollinated flowers precisely after syngamy and zygote formation in A. sellowiana.
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Abstract: Acca sellowiana (Berg) Burret is a predominantly allogamous species with hermaphrodite flowers that has barriers to self-fertilisation such as dichogamy by protogyny and self-incompatibility. This study aimed to identify when self-incompatibility occurs in A. sellowiana flowers submitted to self-pollinations. Pollinations were made using nine known self-incompatible accessions in several treatments including manual cross-pollination, manual self-pollination, no pollination and natural pollination. Flowers were pollinated and pistils collected at times ranging from 1 to 30 days after pollination (DAP). In both cross- and self-pollinations the fertilisation occurred from 18 DAP and the zygote was visualised at 24 and 26 DAP, respectively. The abscission of the self-pollinated flowers increased from 26 DAP onwards, when significant differences (P < 0.05) were found for the percentage of abscission among self-pollinated and cross-pollinated flowers. At 30 DAP, 72% of self-pollinated flowers were abscised. The size of ovules and ovaries of self-pollinated flowers showed no significant difference from those of non-pollinated flowers throughout 30 DAP, while those from cross-pollinated flowers were significantly larger (P < 0.05) than the other treatments from 22 and 24 DAP, respectively. After 40 DAP, there was no fruit development in self-pollination and non-pollination treatments. Our study brings greater clarity to the mechanism of self-incompatibility in A. sellowiana, indicating late-acting self-incompatibility occurring through the rejection/abscission of self-pollinated flowers precisely after syngamy and zygote formation.
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Citations
5-Azacytidine combined with 2,4-D improves somatic embryogenesis of Acca sellowiana (O. Berg) Burret by means of changes in global DNA methylation levels.
Hugo Pacheco de Freitas Fraga,Leila do Nascimento Vieira,Clarissa Alves Caprestano,Douglas André Steinmacher,Gustavo Amadeu Micke,Daniel A. Spudeit,Rosete Pescador,Miguel Pedro Guerra +7 more
TL;DR: The results suggest that DNA methylation dramatically influences SE in Acca sellowiana, and globalDNA methylation dynamics are related to morphogenetic response.
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5-Azacytidine combined with 2,4-D improves somatic embryogenesis of Acca sellowiana (O. Berg) Burret by means of changes in global DNA methylation levels Hugo P. F. FragaLeila N. VieiraClarissa A. CaprestanoDouglas A. Steinmacher • Gustavo A. MickeDaniel A. SpudeitRosete PescadorMiguel P. Guerra
D. A. Steinmacher,A. Spudeit +1 more
- 01 Jan 2012
TL;DR: In this paper, the effects of 5-azacytidine (AzaC) and 2,4-dichlorophenoxyacetic acid (2-4-D) on Acca sellowiana somatic embryogenesis and global DNA methylation levels were evaluated.
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Feijoa [Acca sellowiana (O. Berg) Burret] pollination: A review
TL;DR: This review seeks to expand the current information on feijoa pollination in tropical and subtropical environments and is expected that this review will be useful to senior researchers, undergraduate students, growers and the general public.
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Comparative De Novo Transcriptome Analysis of Fertilized Ovules in Xanthoceras sorbifolium Uncovered a Pool of Genes Expressed Specifically or Preferentially in the Selfed Ovule That Are Potentially Involved in Late-Acting Self-Incompatibility
Qingyuan Zhou,Yuanrun Zheng +1 more
TL;DR: This study represents the first genome-wide identification of genes expressed in the fertilized ovules of an LSI species and indicates that 5 DAP is likely to be a turning point for the development of the selfed ovules.
On farm management of Acca sellowiana (Myrtaceae) as a strategy for conservation of species genetic diversity
TL;DR: It is shown that the management used by farmers, in addition to conserving molecular diversity, tend to increase the genetic variability, an important element for sustainable agricultural designs such as agroforestry systems, and better use of agroecosystem resources.
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