Results 1 to 10 of about 145,199 (175)

A Plastid-Bound Ankyrin Repeat Protein Controls Gametophyte and Early Embryo Development in Arabidopsis thaliana

open access: yesFrontiers in Plant Science, 2022
Proplastids are essential precursors for multi-fate plastid biogenesis, including chloroplast differentiation, a powerhouse for photosynthesis in plants.
Katarína Kulichová   +5 more
doaj   +1 more source

Dynamics of Endogenous Auxin and Its Role in Somatic Embryogenesis Induction and Progression in Cork Oak

open access: yesPlants, 2023
Somatic embryogenesis (SE) is a feasible in vitro regeneration system with biotechnological applications in breeding programs, although, in many forest species, SE is highly inefficient, mainly due to their recalcitrance. On the other hand, SE represents
Elena Carneros   +5 more
doaj   +1 more source

Evolutionary diversification of cytokinin-specific glucosyltransferases in angiosperms and enigma of missing cis-zeatin O-glucosyltransferase gene in Brassicaceae

open access: yesScientific Reports, 2021
In the complex process of homeostasis of phytohormones cytokinins (CKs), O-glucosylation catalyzed by specific O-glucosyltransferases represents one of important mechanisms of their reversible inactivation.
Lenka Záveská Drábková   +2 more
doaj   +1 more source

Mechanical design of apertures and the infolding of pollen grain [PDF]

open access: yesProc. Natl. Acad. Sci. USA 117, 26600-26607 (2020), 2020
When pollen grains become exposed to the environment, they rapidly desiccate. To protect themselves until rehydration, the grains undergo characteristic infolding with the help of special structures in the grain wall---apertures---where the otherwise thick exine shell is absent or reduced in thickness.
arxiv   +1 more source

Development and application of a method to classify airborne pollen taxa concentration using light scattering data

open access: yesScientific Reports, 2021
Although automated pollen monitoring networks using laser optics are well-established in Japan, it is thought that these methods cannot distinguish between pollen counts when evaluating various pollen taxa. However, a method for distinguishing the pollen
Kenji Miki, Toshio Fujita, Norio Sahashi
doaj   +1 more source

Stress-Induced Microspore Embryogenesis Requires Endogenous Auxin Synthesis and Polar Transport in Barley

open access: yesFrontiers in Plant Science, 2019
Stress-induced microspore embryogenesis is a model in vitro system of cell reprogramming, totipotency acquisition, and embryo development. After induction, responsive microspores abandon their developmental program to follow an embryogenic pathway ...
Yolanda Pérez-Pérez   +5 more
doaj   +1 more source

Hormonome Dynamics During Microgametogenesis in Different Nicotiana Species

open access: yesFrontiers in Plant Science, 2021
Plant microgametogenesis involves stages leading to the progressive development of unicellular microspores into mature pollen. Despite the active and continuing interest in the study of male reproductive development, little is still known about the ...
Lenka Záveská Drábková   +6 more
doaj   +1 more source

The connection of pollen concentrations and crowd-sourced symptom data: new insights from daily and seasonal symptom load index data from 2013 to 2017 in Vienna

open access: yesWorld Allergy Organization Journal, 2018
Background Online pollen diaries and mobile applications nowadays allow easy and fast documentation of pollen allergy symptoms. Such crowd-sourced symptom data provides insights into the development and the onset of a pollen allergy.
Katharina Bastl   +3 more
doaj   +1 more source

Flood Mapping in the Coastal Region of Bangladesh Using Sentinel-1 SAR Images: A Case Study of Super Cyclone Amphan

open access: yesJournal of the Civil Engineering Forum, 2021
Floods are triggered by water overflow into drylands from several sources, including rivers, lakes, oceans, or heavy rainfall. Near real-time (NRT) flood mapping plays an important role in taking strategic measures to reduce flood damage after a flood ...
Pollen Chakma, Aysha Akter
doaj   +1 more source

Impact of homogenization and protein extraction conditions on the obtained tobacco pollen proteomic patterns

open access: yesBiologia Plantarum, 2011
Mature pollen grain represents a highly desiccated structure with an extremely tough cell wall. Thanks to it, it resists common proteomic protocols. Instead, a robust homogenization has to be performed since proteins are needed to burst out of the cell ...
J. Fíla   +3 more
doaj   +1 more source

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