Isolation of spinach sperm cells:1:Ultrastrucure and three-dimensional construction in the mature pollen. Wilms H J,Leferink-ten Klooster H B,Van Aelst A C. Biotechnology and Ecology of Pollen . 1985Wilms H J,Leferink-ten Klooster H B,Van Aelst A C.Isolation of spinach sperm cells:1:Ultrastrucure and three-dimensional co...
tod1 is defective in in vivo pollen tube growth To investigate the cause of male sterility, mature pollen grains were stained with Alexander’s stain and with 4′,6-diamidino-2-phenylindole (DAPI) and analysed by microscopy. The cytoplasm of tod1 pollen was red purple after Alexander’s stai...
View Solution How many pollen grains are formed from 10 microspore mother cells by meiosis View Solution A fertilized egg of a plant has 40 chromosomes. The number of chromosomes present in the microspore mother cell is View Solution Doubtnut is No.1 Study App and Learning App with Instant Vid...
In such seeds, the cotyledons or first seed leaves become quite large and accumulate the reserves that will be mobilized later in germination. Reserves may take the form of intracellular oil droplets (for example, the sunflower), protein bodies (beans), and starch grains (cereals), or ...
In some gymnosperms, male gametes are still sperms with flagella, but they do not reach eggs by swimming through external water; instead, pollen grains (male gametophytes encapsulated within a pollen wall) travel through dry air to the ovules; thus sperms must swim only a short distance ...
The proteomes of pollen from different species have been relatively well studied, but the pollen grains are not single cells because they contain two/three-cell gametophytes (10). A critical factor for large scale proteomics analysis of single cells is to obtain adequate amounts of sufficiently ...
Keywords Selenium · Oxidative stress · Ca2+ homeostasis · Olive callus cells · Thapsigargin Introduction The implication of selenium (Se) in human health is well- known. Whether naturally present in foods, taken with sup- plements, or biofortified in crops, Se has been used ...
However, several transcripts, which encode proteins that are most similar to hypothetical Arabidopsis proteins, appeared to be present exclusively in the sperm cells inside mature pollen, but were already present in unicellular microspores. This suggests that certain transcripts might be transcribed early...
The tissues of a plant that would provide the greatest opportunity to observe cells actively undergoing mitosis are the ones that are actively...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our ex...
The cells may be present as individual cells, cell cultures, tissues, meristems, differentiated organs (eg floral parts), specialized cells (eg pollen grains) or subcellular components (eg protoplasts). The living cells may advantageously be maintained in contact with a medium comprising an ...