Results 51 to 60 of about 519 (135)

Male gametogenesis in flowering plants

Frontiers in Sustainable Food Systems
The life cycles of plants are characterized by significant alternations between the diploid sporophytic and the haploid gametophytic generations. Meiosis and fertilization are the prerequisites for achieving the alternation of generations.
Dan-Lu Cui, Chun-Xia Xu, Ping Wang, Tian-Ying Gao, Bo Wang, Tian-Ying Yu   +5 more
doaj   +1 more source

Identification of microspore-active promoters that allow targeted manipulation of gene expression at early stages of microgametogenesis in Arabidopsis

BMC Plant Biology, 2006
Background The effective functional analysis of male gametophyte development requires new tools enabling the spatially and temporally controlled expression of both marker genes and modified genes of interest.
Donders Maarten, Reňák David, Oh Sung-Aeong, Honys David, Šolcová Blanka, Johnson James, Boudová Rita, Twell David   +7 more
doaj   +1 more source

Plastid differentiation during microgametogenesis determines green plant regeneration in barley microspore culture

Plant Science, 2020
Developing plants from in vitro culture of microspores or immature pollen grains (androgenesis) is a highly genotype-dependent process whose effectiveness in cereals is significantly reduced by occurrence of albino regenerants. Here, we examined a hypothesis that the molecular differentiation of plastids in barley microspores prior to in vitro culture ...
Monika Gajecka, Marek Marzec, Beata Chmielewska, Janusz Jelonek, Justyna Zbieszczyk, Iwona Szarejko   +5 more
openaire   +4 more sources

FACS-based purification of Arabidopsis microspores, sperm cells and vegetative nuclei

Plant Methods, 2012
Background The male germline in flowering plants differentiates by asymmetric division of haploid uninucleated microspores, giving rise to a vegetative cell enclosing a smaller generative cell, which eventually undergoes a second mitosis to originate two
Borges Filipe, Gardner Rui, Lopes Telma, Calarco Joseph P, Boavida Leonor C, Slotkin R, Martienssen Robert A, Becker Jörg D   +7 more
doaj   +1 more source

Differentiation of mixed flower buds in some traditional pear varieties in the region of Skopje [PDF]

Acta Agriculturae Serbica, 2018
The results in the present paper are part of the scientific research project 'Autochtonous genetic resources of pears in the Republic of Macedonia'. Flower bud differentiation was examined in five traditional pear varieties ('Carigradsko Avche', 'Letna ...
Selamovska Ana, Miskoska-Milevska Elizabeta   +1 more
doaj  

Development of pollen grain in yellow passion-fruit (Passiflora edulis f. flavicarpa; Passifloraceae)

Genetics and Molecular Biology, 2000
To clarify events occurring during pollen grain formation in yellow passion-fruit (Passiflora edulis f. flavicarpa), floral buds were collected at different stages of development. After bracket, petal and sepal removal the anthers were fixed, dehydrated,
Margarete Magalhães de Souza, Telma Nair Santana Pereira   +1 more
doaj   +1 more source

Cytology and Kinetics of microgametogenesis and fertilization in Plasmodium yoelii nigeriensis

Parasitology, 1975
The sexual development of the microgametocyte of Plasmodium yoelii nigeriensis may be subdivided into microgametogenesis which includes exflagellation, dispersal of the gametes and fertilization. Under our experimental conditions microgametogenesis takes about 8–15 min at 20 °C, the duration of this period being inversely related to temperature ...
R E, Sinden, N A, Croll
openaire   +2 more sources

Comprehensive analysis of Ogura cytoplasmic male sterility-related genes in turnip (Brassica rapa ssp. rapifera) using RNA sequencing analysis and bioinformatics.

PLoS ONE, 2019
Ogura-type cytoplasmic male sterility (Ogura-CMS) has been widely used in the hybrid breeding industry for cruciferous vegetables. Turnip (Brassica rapa ssp. rapifera) is one of the most important local cruciferous vegetables in China, cultivated for its
Sue Lin, Yingjing Miao, Shiwen Su, Jian Xu, Libo Jin, Da Sun, Renyi Peng, Li Huang, Jiashu Cao   +8 more
doaj   +1 more source

Repetitive DNA in the Architecture, Repatterning, and Diversification of the Genome of Aegilops speltoides Tausch (Poaceae, Triticeae)

Frontiers in Plant Science, 2018
The genome’s adaptability to environmental changes, especially during rapid climatic fluctuations, underlies the existence and evolution of species. In the wild, genetic and epigenetic genomic changes are accompanied by significant alterations in the ...
Yulia Pollak, Yulia Pollak, Einat Zelinger, Olga Raskina   +3 more
doaj   +1 more source

Azadirachtin Disrupts Formation of Organised Microtubule Arrays during Microgametogenesis of Plasmodium berghei

Journal of Eukaryotic Microbiology, 2002
ABSTRACT. Transmission of malaria parasites from vertebrate blood to the mosquito vector depends critically on the differentiation of the gametocytes into gametes. This occurs in response to environmental stimuli encountered by the parasite in the mosquito bloodmeal.
Billker, O, Shaw, M, Jones, I, Ley, S, Mordue, A, Sinden, R   +5 more
openaire   +3 more sources