Results 21 to 30 of about 442,091 (288)

Pollen and Pollen Enzymes [PDF]

open access: greenAmerican Journal of Botany, 1921
A review of the literature shows very few complete or satisfactory reports of experiments in regard to either the general chemistry or the enzymes of pollen. Our knowledge of the subject seems to be very fragmentary. It is conspicuous by its omission from the textbooks of botany.
Julia Bayles Paton
openalex   +4 more sources

Allergenic pollen and pollen allergy in Europe

open access: yesAllergy, 2007
The allergenic content of the atmosphere varies according to climate, geography and vegetation. Data on the presence and prevalence of allergenic airborne pollens, obtained from both aerobiological studies and allergological investigations, make it possible to design pollen calendars with the approximate flowering period of the plants in the sampling ...
Carlos Nunes   +10 more
openaire   +6 more sources

Pectin De-methylesterification and AGP Increase Promote Cell Wall Remodeling and Are Required During Somatic Embryogenesis of Quercus suber

open access: yesFrontiers in Plant Science, 2019
Somatic embryogenesis is a reliable system for in vitro plant regeneration, with biotechnological applications in trees, but the regulating mechanisms are largely unknown.
Yolanda Pérez-Pérez   +9 more
doaj   +1 more source

Metabolomics and Biomarkers for Drug Discovery

open access: yesMetabolites, 2018
Metabolomics and biomarkers are increasingly used in drug discovery and development, and are applied to personalized medicine. Progress in these research areas has increased our understanding of disease pathology and improved therapeutic strategies for ...
Pollen K. Yeung
doaj   +1 more source

A combinatorial approach to angiosperm pollen morphology [PDF]

open access: yes, 2016
Angiosperms (flowering plants) are strikingly diverse. This is clearly expressed in the morphology of their pollen grains, which are characterized by enormous variety in their shape and patterning.
Blackmore S   +7 more
core   +1 more source

Cumulative Pollen Concentration Curves for Pollen Allergy Diagnosis [PDF]

open access: yesJournal of Investigational Allergology and Clinical Immunology, 2021
This study was supported by a grant from Euroimmun (code 118583).
S Caglayan Sozmen   +38 more
openaire   +5 more sources

Effects of Alternaria alternata f.sp. lycopersici toxins on pollen [PDF]

open access: yes, 1988
Effects of the phytotoxic compounds (AAL-toxins) isolated from cell-free culture filtrates of Alternaria alternata f.sp. lycopersici on in vitro pollen development were studied. AAL-toxins inhibited both germination and tube growth of pollen from several
Bino, R.J.,   +4 more
core   +2 more sources

Pollen selection

open access: yesTheoretical and Applied Genetics, 1992
In recent years a large number of reports have been published hinting about the possible role of selection at the male gametophyte level in natural conditions and its possible use as a tool in plant breeding programs. In this work, the evidence that has so far emerged on gametophytic selection is reviewed, and its relationship to pollen competition ...
Hormaza Urroz, José Ignacio   +1 more
openaire   +3 more sources

Functional expression and subcellular localization of pea polymorphic isoflavone synthase CYP93C18

open access: yesBiologia Plantarum, 2013
Isoflavone synthase (IFS; CYP93C) plays a key role in the biosynthesis of phenolic secondary metabolites, isoflavonoids. These compounds, which are well-known for their benefits to human health and plant defence, are produced mostly in legumes.
M. Pičmanová   +6 more
doaj   +1 more source

Self-pollination by sliding pollen in Caulokaempferia coenobialis (Zingiberaceae) [PDF]

open access: yes, 2005
Caulokaempferia coenobialis (Zingiberaceae) forms dense populations on steep cliffs in shady, humid monsoon forests in south China. It produces few consecutively opening bright yellow flowers that are 3 cm long and oriented parallel to the ground.
Chen, Zhongyi   +3 more
core   +1 more source

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