Microscopy of Physcomitrella patens sperm cells.

Abstract:

BACKGROUND:Archegoniates (bryophytes, ferns and gymnosperms), such as the moss Physcomitrella patens, possess freely motile sperm cells (spermatozoids) which reach the egg cell via surface water. Although these motile flagellated sperm cells are a traditional botanical subject, they have not been thoroughly analysed in the flagship non-seed plant model species P. patens. Protocols are required to determine the behaviour of wild type sperms as a prerequisite for future research such as the characterization of mutants or factors that influence sperm number, morphology, viability and motility. RESULTS:Here, we present protocols for the observation of fixed, as well as live sperms utilizing a standard microscope at intermediate magnifications. Fixed samples can be used for the fast assessment of sperm number and morphology. To determine functionality, the observation of live sperms is required. Protocols for determining both sperm motility and viability are provided, allowing both parameters to be distinguished. CONCLUSIONS:These step-by-step protocols are particularly useful for researchers so far not familiar with the analysis of motile gametes and are meant to aid the establishment and improvement of these analyses in order to stimulate research on spermatogenesis in the moss model species P. patens.

journal_name

Plant Methods

journal_title

Plant methods

authors

Horst NA,Reski R

doi

10.1186/s13007-017-0186-2

subject

Has Abstract

pub_date

2017-05-10 00:00:00

pages

33

issn

1746-4811

pii

186

journal_volume

13

pub_type

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