Results 91 to 100 of about 86,726 (311)

Promoted ABA Hydroxylation by Capsicum annuum CYP707As Overexpression Suppresses Pollen Maturation in Nicotiana tabacum

open access: yesFrontiers in Plant Science, 2020
Abscisic acid (ABA) is a key signaling molecule that mediates plant response to stress. Increasing evidence indicates that ABA also regulates many aspects of plant development, such as seed germination, leaf development, and ripening.
Hyun Min Kim   +6 more
doaj   +1 more source

Fatty acid composition of pollen and the effect of two dominant fatty acids (linoleic and oleic) in pollen and flour diets on longevity and nutritional composition of honey bees (apis mellifera)

open access: yes, 2006
The size of the apiculture industry in Western Australia (W.A.) is one of the smallest in the nation but the production of pollen and honey per colony is the highest in Australia.
Manning, Robert
core  

Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Changing climates are leading to more frequent and severe heat waves, potentially threatening plant populations. Both acclimation to stress and selection for heat‐escape or heat‐resistance phenotypes occur during heat waves. However, plastic responses and selection do not necessarily interact cohesively—even producing trait responses ...
Lana F. Gaspard   +4 more
wiley   +1 more source

Studies on the effects of salinity and heavy metals on the sporophytic & gametophytic generations of Arabidopsis thaliana (L.) heynh [PDF]

open access: yes, 1994
The aim of this research was to study the effects of Salinity & Heavy Metals on the Sporophyte & Gametophyte generations of Arabidopsis thaliana.
Rind Baloch, Ali Hassan
core  

Development of an Automatic Pollen Classification System

open access: yes, 2015
This research applied image processing and machine learning techniques to develop an automatic process for the identification of 5 pollen species using images from a digital ...
Chudyk, C. (i3mainz, University of Applied Sciences Mainz)
core   +1 more source

Soil salinity effects on pollen and pollinator visitation in a buzz‐pollinated glycophyte, Solanum carolinense

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Human activity has significantly altered the salt cycle, affecting an estimated 2.5 billion acres of soil worldwide. Elevated soil salinity is a well‐known plant stressor, but it may also affect interactions between plants and insects, which are often sodium limited.
Kylie Bill, David E. Carr
wiley   +1 more source

Genome-scale analysis and comparison of gene expression profiles in developing and germinated pollen in Oryza sativa

open access: yesBMC Genomics, 2010
Background Pollen development from the microspore involves a series of coordinated cellular events, and the resulting mature pollen has a specialized function to quickly germinate, produce a polar-growth pollen tube derived from the vegetative cell, and ...
Xue Yongbiao   +5 more
doaj   +1 more source

History of Picea abies in west central Sweden [PDF]

open access: yes, 2006
Early Holocene Picea megafossils found in west central Sweden have challenged the prevailing theory based on pollen analysis that Picea migrated to Scandinavia during the second half of the Holocene.
Stedingk, Henrik von
core  

Allergic Rhinitis Amplifies Asthma Risk in Patients With Chronic Rhinosinusitis: A Large‐Scale Retrospective Cohort Analysis

open access: yesInternational Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Chronic rhinosinusitis (CRS) and allergic rhinitis (AR) are two highly prevalent airway diseases in the United States. While the coexistence of CRS and asthma is well recognized, less is known about the development of new‐onset asthma in CRS, particularly in the context of comorbid AR. This study assessed the impact of CRS and AR on
Austin J. Lee, Mohamad R. Chaaban
wiley   +1 more source

The Microtubular Cytoskeleton during Pollen Development and Pollen Tube Growth in Nicotiana tabacum

open access: yes, 1992
The role of the male partner in the fertilization process in higher plants has been defined from long time (Stanley and Linskens, 1972). As shown by optical and ultrastructural investigations, some closely related steps such as pollen development, pollen
Antonio Tiezzi   +11 more
core   +1 more source

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