Results 61 to 70 of about 750 (185)

The androecium of Adenium obesum (Apocynaceae): anther and pollen grains development

Ornamental Horticulture
In this study, we describe anther development in Adenium obesum, providing information on microsporogenesis, microgametogenesis, and the structure of mature pollen grains.
Deborah Cristina Dias Campos, Clivia Carolina Fiorilo Possobom, Elka Fabiana Aparecida Almeida, Sabrina Maihave Barbosa Ramos, Silvia Nietsche   +4 more
doaj   +1 more source

Anther and ovule development of Clematis serratifolia (Ranunculaceae)-with new formation types in megaspore and nucellus.

PLoS ONE, 2020
Morphological indices of vegetative organs or reproductive organs, which are often used to analyze the evolution and classify Clematis, indicate that Clematis serratifolia and C. glauca could be related members at similar evolutionary levels.
Yi Yang, Jie Sun, Xiao Guo, Kuiling Wang, Qinghua Liu, Qingchao Liu   +5 more
doaj   +1 more source

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

Early emergence of P. falciparum microgametes.

, 2022
The merged image, microtubules (SiR-Tubulin), host erythrocyte membrane (WGA) and parasite nuclei (Vybrant DyeCycle Violet) of microgametogenesis in the early stages of exflagellation.
Mufuliat T. Famodimu (12055352), Holly X. Smith (12055349), Jake Baum (132234), Sarah Jordan (8307168), Alisje Churchyard (1484533), George W. Ashdown (12055358), Farah A. Dahalan (12055355), Sabrina Yahiya (7410695), David C. A. Gaboriau (9576176)   +8 more
core   +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

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

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

The male germ unit association is independently regulated of GUM in Arabidopsis thaliana

Plant Direct, Volume 8, Issue 7, July 2024.
Abstract Cytoplasmic projections (CPs) formed by the generative and sperm cells link the male gametes with the vegetative cell (VC) nucleus, which are required to build the male germ unit (MGU) assemblage in the angiosperm pollen grain. As molecular and genetic controls underlying CP development and formation of the MGU are unknown, it was hypothesized
Abdur Rauf, Anbang Wang, Yujia Li, Zhihao Lian, Shouxing Wei, Kashmala Jabbar, Muhammad Wisal, Ikramullah Khan, Muhammad Khalid, Jingyang Li   +9 more
wiley   +1 more source