Results 41 to 50 of about 10,623 (232)

Molecular cloning and transcriptional activity of a new Petunia calreticulin gene involved in pistil transmitting tract maturation, progamic phase, and double fertilization [PDF]

open access: yes, 2013
Calreticulin (CRT) is a highly conserved and ubiquitously expressed Ca2+-binding protein in multicellular eukaryotes. As an endoplasmic reticulum-resident protein, CRT plays a key role in many cellular processes including Ca2+ storage and release ...
A Christensen   +59 more
core   +2 more sources

SWOLLEN TAPETUM AND STERILITY 1 is required for tapetum degeneration and pollen wall formation in rice

open access: yesPlant Physiology, 2022
Abstract The pollen wall is important for protecting the male gametophyte and for fertilization. The lipid components of the pollen wall are mainly synthesized and transported from the sporophytic tapetum. Although several factors related to lipid biosynthesis have been characterized, the molecular mechanisms underlying lipid ...
Guoqiang Yuan   +26 more
openaire   +2 more sources

Microsporogênese e etapas da ontogenia do gametófito masculino de Tabebuia ochracea (Cham.) Standley (Bignoniaceae) Microsporogenesis and the early male gametophyte development of Tabebuia ochraceae (Cham.) Standley (Bignoniaceae)

open access: yesActa Botânica Brasílica, 1996
Foram analisadas as etapas da ontogenia do gametófito masculino e da parede da antera de Tabebuia ochracea. O método de formação da parede do microsporângio é do tipo Dicotiledôneo.
Nelson S. Bittencourt Jr
doaj   +1 more source

ABSENCE OR PRESENCE OF TAPETUM LUCIDUM: MACRO AND MICROSCOPIC INVESTIGATIONS IN DONKEY (EQUUS ASINUS), CAT (FELIS DOMESTICA) AND ONE-HUMPED CAMEL (CAMELUS DROMEDARIUS)

open access: yesSlovenian Veterinary Research, 2018
For explanation eye-shine phenomenon, we used both eyes of five healthy adult donkeys (Equus asinus), cats (Felis domestica) and one-humped camels (Camelus dromedarius).
Hanaa M. El-Ghazali, Eman A.A. Mahdy
doaj   +1 more source

Potential Association of Reactive Oxygen Species With Male Sterility in Peach

open access: yesFrontiers in Plant Science, 2021
Male sterility is an important agronomic trait for hybrid vigor utilization and hybrid seed production, but its underlying mechanisms remain to be uncovered.
Yaming Cai   +20 more
doaj   +1 more source

The fibrous tapetum of the horse eye

open access: yesJournal of Anatomy, 2013
AbstractThe tapetum lucidum is a light‐reflective tissue in the eyes of many animals. Many ungulates have a fibrous tapetum. The horse has one of the largest eyes of any living animal and also has excellent vision in low‐light environments. This study aimed to clarify the macroscopic tapetal shape, relationship between the tapetal thickness and the ...
Aya, Shinozaki   +3 more
openaire   +3 more sources

Documenting the Sporangium Development of the Polypodiales Fern Pteris multifida

open access: yesFrontiers in Plant Science, 2022
Reconstructing the development of sporangia in seed-free vascular plants provides crucial information about key processes enabling the production of spores that are important in the life cycle of these plants.
Nai-Ying Yang   +6 more
doaj   +1 more source

The making of gametes in higher plants [PDF]

open access: yes, 2005
Higher plants have evolved to be one of the predominant life forms on this planet. A great deal of this evolutionary success relies in a very short gametophytic phase which underlies the sexual reproduction cycle. Sexual plant reproduction takes place in
Becker, J.D., Boavida, L., Feijó, J.A.
core   +1 more source

Chromatin Topology Reconfiguration Orchestrates Thermotolerant Male Fertility via GhAL5 in Cotton

open access: yesAdvanced Science, EarlyView.
This study investigates cotton’s high‐temperature (HT) response using multi‑omics. Dynamic 3D genome changes drive expression bias affecting male fertility. The tolerant line shows controlled chromatin dynamics, while the sensitive line exhibits overactivation.
Yanlong Li   +15 more
wiley   +1 more source

Autophagy-mediated degradation of integumentary tapetum is critical for embryo pattern formation

open access: yesNature Communications
Autophagy modulates the degradation and recycling of intracellular materials and contributes to male gametophyte development and male fertility in plants. However, whether autophagy participates in seed development remains largely unknown.
Lin-lin Zhao   +7 more
doaj   +1 more source

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