Results 1 to 10 of about 10,623 (232)

Tapetum-Dependent Male Meiosis Progression in Plants: Increasing Evidence Emerges

open access: yesFrontiers in Plant Science, 2020
In higher plants, male meiosis is a key process during microsporogenesis and is crucial for male fertility and seed set. Meiosis involves a highly dynamic organization of chromosomes and cytoskeleton and specifically takes place within sexual cells ...
Xiaoning Lei, Bing Liu
exaly   +3 more sources

Identity Transitions of Tapetum Phases: Insights into Vesicular Dynamics and in Mortem Support During Pollen Maturation [PDF]

open access: yesPlants
Flower development progresses through twelve distinct stages, meticulously regulated to optimize plant reproductive success. At stage 5, the initiation of anther development occurs, which is further categorized into 14 stages divided into two defined ...
Gabriel Luis L. S. Moreira   +2 more
doaj   +2 more sources

Ethylene Activates the EIN2-EIN3/EIL1 Signaling Pathway in Tapetum and Disturbs Anther Development in Arabidopsis

open access: yesCells, 2022
Ethylene was previously reported to repress stamen development in both cucumber and Arabidopsis. Here, we performed a detailed analysis of the effect of ethylene on anther development.
Ben-Shun Zhu   +8 more
doaj   +1 more source

Abnormal Programmed Cell Death of Tapetum Leads to the Pollen Abortion of Lycium barbarum Linnaeus

open access: yesHorticulturae, 2022
Programmed cell death (PCD) in tapetum provides nutrients for pollen development. Once this process becomes abnormal, the pollen will be aborted, and sterile lines will be formed. Lycium barbarum L.
Xin Zhang   +13 more
doaj   +1 more source

Imaging plant germline differentiation within Arabidopsis flowers by light sheet microscopy [PDF]

open access: yes, 2020
In higher plants, germline differentiation occurs during a relatively short period within developing flowers. Understanding of the mechanisms that govern germline differentiation lags behind other plant developmental processes.
Bainar, Petr   +8 more
core   +1 more source

Integrated cytological and transcriptomic analysis reveals insights into pollen fertility in newly synthetic Brassica allohexaploids

open access: yesFrontiers in Plant Science, 2023
Trigenomic Brassica allohexaploids (AABBCC, 2n = 6x = 54) have great potential in oilseed breeding and genetic diversity. However, Brassica allohexaploids do not exist naturally, and the underlying mechanism regulating pollen fertility in artificially ...
Zhaoran Tian   +11 more
doaj   +1 more source

Cytological and Molecular Mechanism of Low Pollen Grain Viability in a Germplasm Line of Double Lotus

open access: yesPlants, 2023
Self-fertilization rate is an essential index of lotus reproductive system development, and pollen activity is a key factor affecting lotus seed setting rate. Based on cytology and molecular biology, this study addresses the main reasons for the low self-
Guangyang Liu   +8 more
doaj   +1 more source

A Cytological Study of Anther and Pollen Development in Chinquapin (Castanea henryi)

open access: yesHortScience, 2020
The normal development of anthers and the formation of functional pollen are the prerequisites for successful pollination and fertilization. In this study, we observed dynamic changes in inflorescence and anther development in the chinquapin (Castanea ...
Weiping Zhong   +5 more
doaj   +1 more source

Fine regulation of ARF17 for anther development and pollen formation

open access: yesBMC Plant Biology, 2017
Background In Arabidopsis, the tapetum and microsporocytes are critical for pollen formation. Previous studies have shown that ARF17 is expressed in microsporocytes and tetrads and directly regulates tetrad wall synthesis for pollen formation.
Bo Wang   +8 more
doaj   +1 more source

Anther Ontogeny and Microsporogenesis in <i>Helianthus annuus</i> L. (Compositae)

open access: yesNotulae Scientia Biologicae, 2015
In this study, anther ontogeny and microsporogenesis were analysed in Helianthus annuus L. The undifferentiated anther is ovoid-shaped and the differentiation starts with the appearance of archesporial cells. Mature anthers are tetrasporangiate.
Aslihan ÇETİNBAŞ, Meral ÜNAL
doaj   +3 more sources

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