Results 51 to 60 of about 820 (154)

Imaging of Molecular and Developmental Responses to Abiotic Stresses in Reproductive Tissues

Physiologia Plantarum, Volume 178, Issue 1, January/February 2026.
ABSTRACT Abiotic stresses, such as drought, salinity, and extreme temperatures, have profound effects on plant reproduction, often leading to reduced fertility and yield. Reproduction in plants involves complex interactions between diverse cells, necessitating spatiotemporal resolution to understand how stress impacts each component of this intricate ...
Hana Daryanavard, Teresa Paraiso, María Cielo Pasten, Bianca Maria Orlando Marchesano, Marta Adelina Mendes, Hélène S. Robert, Francesca Resentini, Joëlle K. Mühlemann   +7 more
wiley   +1 more source

Comparative insights into molecular pathways influencing germline development in early‐divergent angiosperms

The Plant Journal, Volume 125, Issue 2, January 2026.
SUMMARY The molecular and genetic mechanisms regulating female germline development remain largely unknown in basal and early‐divergent angiosperms. This contrasts with recent progress in model eudicots such as Arabidopsis thaliana and monocots, such as rice, barley, and maize. In this study, we investigate the genetic pathway governing female germline
Jorge Lora, Matthew R. Tucker, Neil J. Shirley, Chao Ma, José I. Hormaza   +4 more
wiley   +1 more source

3D Electron Microscopy Reveals the Structural Complexity of the Intravacuolar Membranous Network in Cyrilia lignieresi‐Infected Erythrocytes of the Fish Synbranchus marmoratus

Journal of Eukaryotic Microbiology, Volume 72, Issue 4, July/August 2025.
ABSTRACT This study employs advanced three‐dimensional electron microscopy techniques, including Transmission Electron Microscopy (TEM) tomography and freeze‐fracture imaging via scanning electron microscopy (SEM), to investigate the ultrastructural organization of Cyrilia lignieresi‐infected red blood cells (iRBCs) in the host fish Synbranchus ...
Brenda Santarém Fachetti, Maíra Turiel‐Silva, Camila Wendt, Hilton Tulio Costi, Edilene Oliveira da Silva, Ana Paula Drummond Rodrigues, Wanderley de Souza, Kildare Miranda, José Antonio Picanço Diniz   +8 more
wiley   +1 more source

Symmetric pollen mitosis I and suppression of pollen mitosis II prevent pollen development in Brachiaria jubata (Gramineae)

Brazilian Journal of Medical and Biological Research, 2005
Microsporogenesis and pollen development were analyzed in a tetraploid (2n = 4x = 36) accession of the forage grass Brachiaria jubata (BRA 007820) from the Embrapa Beef Cattle Brachiaria collection that showed partial male sterility.
C. Risso-Pascotto, M.S. Pagliarini, C.B. Valle, L. Jank   +3 more
doaj   +1 more source

Patterns and Drivers of Pollen Temperature Tolerance

Plant, Cell &Environment, Volume 48, Issue 2, Page 1366-1379, February 2025.
ABSTRACT Pollen, a pivotal stage in the plant reproductive cycle, is highly sensitive to temperature fluctuations, impacting seed quality and quantity. While the importance of understanding pollen temperature limits (Tmin, Topt, Tmax – collectively PTLs) is recognized, a comprehensive synthesis of underlying drivers is lacking.
Donam Tushabe, Sergey Rosbakh
wiley   +1 more source

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

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

Microgametogenesis and Megagametogenesis in Cichorium-intybus L - Successive Stages and Some Symptoms of Apospory

, 2014
In Cichorium intybus L., the mode of reproduction could be at the same time sexual and apomicbic. This could explain the contradictions existing in the interpretation of the heritaibidity of the characters in this species.
B. Longly, B. Louant
semanticscholar   +1 more source