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Environmental and Genetic Factors Affecting Apospory Expressivity in Diploid Paspalum rufum [PDF]

Plants, 2021
In angiosperms, gametophytic apomixis (clonal reproduction through seeds) is strongly associated with polyploidy and hybridization. The trait is facultative and its expressivity is highly variable between genotypes.
Mariano Soliman, Marika Bocchini, Juliana Stein, Juan Pablo A. Ortiz, Emidio Albertini, Luciana Delgado   +5 more
doaj   +4 more sources

Differential Epigenetic Marks Are Associated with Apospory Expressivity in Diploid Hybrids of Paspalum rufum [PDF]

Plants, 2021
Apomixis seems to emerge from the deregulation of preexisting genes involved in sexuality by genetic and/or epigenetic mechanisms. The trait is associated with polyploidy, but diploid individuals of Paspalum rufum can form aposporous embryo sacs and ...
Mariano Soliman, Maricel Podio, Gianpiero Marconi, Marco Di Marsico, Juan Pablo A. Ortiz, Emidio Albertini, Luciana Delgado   +6 more
doaj   +4 more sources

Apospory and Diplospory in Diploid Boechera (Brassicaceae) May Facilitate Speciation by Recombination-Driven Apomixis-to-Sex Reversals [PDF]

Frontiers in Plant Science, 2019
Apomixis (asexual seed formation) in angiosperms occurs either sporophytically, through adventitious embryony, or gametophytically, where an unreduced female gametophyte (embryo sac) forms and produces an unreduced egg that develops into an embryo ...
John G. Carman, Mayelyn Mateo de Arias, Mayelyn Mateo de Arias, Lei Gao, Xinghua Zhao, Xinghua Zhao, Becky M. Kowallis, David A. Sherwood, Manoj K. Srivastava, Manoj K. Srivastava, Krishna K. Dwivedi, Krishna K. Dwivedi, Krishna K. Dwivedi, Bo J. Price, Landon Watts, Michael D. Windham   +15 more
doaj   +5 more sources

Spotting the Targets of the Apospory Controller TGS1 in Paspalum notatum [PDF]

Plants, 2022
Sexuality and apomixis are interconnected plant reproductive routes possibly behaving as polyphenic traits under the influence of the environment.
Carolina Marta Colono, Maricel Podio, Lorena Adelina Siena, Juan Pablo A. Ortiz, Olivier Leblanc, Silvina Claudia Pessino   +5 more
doaj   +3 more sources

Diploid aposporous sunflower forms triploid BIII progeny displaying increased apospory levels and non-random genetic mutations [PDF]

Scientific Reports
Apomixis (asexual reproduction via seeds) has the potential to revolutionize sunflower breeding. In previous studies, we identified a diploid sunflower line (Rf975) that naturally exhibits extra gametophytes resembling aposporous apomictic embryo sacs ...
Silvina Pessino, Graciela Nestares, Marta B. Bianchi, Iara Katzaroff, Lucía Amato, Marika Bocchini, Gianpiero Marconi, Emidio Albertini, Ana C. Ochogavía   +8 more
doaj   +3 more sources

High-Resolution Linkage Map With Allele Dosage Allows the Identification of Regions Governing Complex Traits and Apospory in Guinea Grass (Megathyrsus maximus) [PDF]

Frontiers in Plant Science, 2020
Forage grasses are mainly used in animal feed to fatten cattle and dairy herds, and guinea grass (Megathyrsus maximus) is considered one of the most productive of the tropical forage crops that reproduce by seeds.
Thamiris G. Deo, Rebecca C. U. Ferreira, Letícia A. C. Lara, Aline C. L. Moraes, Alessandro Alves-Pereira, Fernanda A. de Oliveira, Antonio A. F. Garcia, Mateus F. Santos, Liana Jank, Anete P. de Souza, Anete P. de Souza   +10 more
doaj   +3 more sources

Apospory Expressivity and Segregation in Intraspecific Hybrids of <i>Paspalum notatum</i> Flügge. [PDF]

Genes (Basel)
Background/Objectives: Apospory is a key component of gametophytic apomixis in Paspalum notatum and is relevant to breeding because, together with parthenogenesis and appropriate endosperm development, it can enable clonal seed reproduction.
Peréz Góez A, Simioni C, Silveira DC, Dahmer N, Pagani Sangineto ME, Krug J, Stainhaus C, Bragé Dos Santos M, Ludvig Vogt H, Przyczynski Rauber P, Weiler RL.   +10 more
europepmc   +2 more sources

Auxin response factor 10 insensitive to miR160regulation induces apospory-like phenotypes in Arabidopsis. [PDF]

iScience
Summary The Arabidopsis megaspore mother cell (MMC) arises from somatic cells in the ovule primordium and enters meiosis to generate four megaspores. Only the most chalazal (functional megaspore, FM) survives, undergoing a series of mitoses to form the ...
Pessino S, Cucinotta M, Colono C, Costantini E, Perrone D, Di Marzo M, Callizaya Terceros G, Petrella R, Mizzotti C, Azzaro C, Podio M, Marconi G, Albertini E, Dickinson H, Colombo L, Mendes MA.   +15 more
europepmc   +2 more sources

Establishment of Apomixis in Diploid F2 Hybrids and Inheritance of Apospory From F1 to F2 Hybrids of the Ranunculus auricomus Complex

Frontiers in Plant Science, 2018
Hybridization and polyploidization play important roles in plant evolution but it is still not fully clarified how these evolutionary forces contribute to the establishment of apomicts.
Birthe H. Barke, Mareike Daubert, Elvira Hörandl   +2 more
doaj   +2 more sources

Features of embryonic development in sugar beet under apospory and cytoplasmic male sterility

Рослинництво та ґрунтознавство
The aim of the study was to evaluate the theoretical foundations of the phenomenon of high seed self-reproduction in substituted lines and to develop a methodology for studying embryonic development in sugar beet breeding materials with cytoplasmic male ...
M. Roik, N. Kovalchuk, O. Zinchenko, Ya. Manziuk, R. Spriazhka   +4 more
doaj   +2 more sources