Results 41 to 50 of about 302 (111)

Ecological and evolutionary implications of hybridization, polyploidy and apomixis in angiosperms

Botan‪ical Sciences
Hybridization, polyploidy, and apomixis are related to the diversification of angiosperms, generating complex taxonomic relationships between species. Despite the differences in the frequencies of these phenomena, apomixis, the asexual seed production ...
Cinthya I. Cervantes-Díaz, Ken Oyama, Eduardo Cuevas   +2 more
doaj   +1 more source

Role of paternal Oryza sativa Baby Booms (OsBBMs) in initiating de novo gene expression and regulating early zygotic development in rice

The Plant Journal, Volume 122, Issue 6, June 2025.
SUMMARY Oryza sativa BABY BOOM 1 (OsBBM1), a member of the AP2/ERF family of transcription factors, is expressed from paternal allele in rice zygote and plays a crucial role in initiating zygotic development. However, the mechanism how the paternal OsBBM1 drives this development remains unclear. Rice zygotes with four different gamete combinations with
Nargis Akter, Takumi Tezuka, Kasidit Rattanawong, Aya Satoh, Atsuko Kinoshita, Yutaka Sato, Takashi Okamoto   +6 more
wiley   +1 more source

Prospects and limits of the flow cytometric seed screen – insights from Potentilla sensu lato (Potentilleae, Rosaceae)

New Phytologist, Volume 198, Issue 2, Page 605-616, April 2013., 2013
Summary The flow cytometric seed screen allows for identification of reproductive modes of seed formation and inference of the ploidy of contributing gametes. However, the lack of a mathematical formalization to infer male/female genomic contributions, and the prerequisite of a binucleate female contribution to the endosperm limits its applicability ...
Christoph Dobeš, Andrea Lückl, Karl Hülber, Juraj Paule   +3 more
wiley   +1 more source

Depletion of Key Meiotic Genes and Transcriptome-Wide Abiotic Stress Reprogramming Mark Early Preparatory Events Ahead of Apomeiotic Transition

Frontiers in Plant Science, 2016
Molecular dissection of apomixis - an asexual reproductive mode - is anticipated to solve the enigma of loss of meiotic sex, and to help fixing elite agronomic traits.
Jubin N Shah, Olga Kirioukhova, Pallavi Pawar, Muhammad Tayyab, Juan Luis Mateo, Amal Joseph Johnston   +5 more
doaj   +1 more source

Taxonomic identification and life cycle comparison of two populations of the monostromatic green algae Monostroma nitidum

Ecology and Evolution, Volume 14, Issue 5, May 2024.
This study employed molecular markers and morphological studies of two populations of Monostroma nitidum collected from YJ and ZJ. The results revealed no obvious differences in tufA and 18S rDNA sequences between the two populations, although there were extremely significant differences in morphological characteristics. M.
Jiawei Liao, Sipan Wang, Kun Lin, Yongjian Huang, Xinyi Chen, Rong Xin, Youyou Guo, Enyi Xie   +7 more
wiley   +1 more source

A High-Density Linkage Map of the Forage Grass Eragrostis curvula and Localization of the Diplospory Locus

Frontiers in Plant Science, 2019
Eragrostis curvula (Schrad.) Nees (weeping lovegrass) is an apomictic species native to Southern Africa that is used as forage grass in semiarid regions of Argentina.
Diego Zappacosta, Jimena Gallardo, José Carballo, Mauro Meier, Juan Manuel Rodrigo, Cristian A. Gallo, Juan Pablo Selva, Juliana Stein, Juan Pablo A. Ortiz, Emidio Albertini, Viviana Echenique   +10 more
doaj   +1 more source

Distinct geographic parthenogenesis in spite of niche conservatism and a single ploidy level: A case of Rubus ser. Glandulosi (Rosaceae)

New Phytologist, Volume 242, Issue 3, Page 1348-1362, May 2024.
Summary Asexual organisms often differ in their geographic distributions from their sexual relatives. This phenomenon, termed geographic parthenogenesis, has long been known, but the underlying factors behind its diverse patterns have been under dispute. Particularly problematic is an association between asexuality and polyploidy in most taxa. Here, we
Michal Sochor, Martin Duchoslav, Věra Forejtová, Michal Hroneš, Michaela Konečná, Bohumil Trávníček   +5 more
wiley   +1 more source

Sex- versus apomixis-specific polymorphisms in the 5′UTR of APOLLO from Boechera shift gene expression from somatic to reproductive tissues in Arabidopsis

Frontiers in Plant Science
IntroductionAmong candidate genes underlying the control components of apomixis, APOLLO is known for its strong linkage to apomeiosis in the genus Boechera.
Maryam Honari, Joanne R. Ashnest, Timothy F. Sharbel   +2 more
doaj   +1 more source

Diploid gametes in maize by mutation of A-Type cyclins: a step towards apomeiosis and synthetic apomixis

Abstract Hybrid crops are agriculturally desirable due to heterosis but are costly or difficult to produce. Synthetic apomixis, clonal reproduction through seed, offers the ability to fix hybrid vigor. Two components are needed to achieve this goal: the formation of diploid gametes identical to the maternal parent ...
D.J. Skinner, A.H. Gaikwad, J.A. Fenner, J. Green, T. Kelliher, M-J. Cho, V. Sundaresan   +6 more
openaire   +1 more source

Pharmacologically Induced Meiosis Apomeiosis Interconversions in Boechera, Arabidopsis and Vigna

, 2018
Apomixis is a clonal propagation method that produces offspring identical to the mother plant. With this feature, superior traits could be maintained over generations. However, our knowledge about apomixis is limited. In this study, we analyzed several apomictic Boechera embryologically to learn the details of apomixis.
openaire   +2 more sources