Why siphonogamy is considered to be fertilisation?

  • Thread starter Hemant
  • Start date
  • #1
219
28

Main Question or Discussion Point

According to me fertilisation is fusion of gametes and siphonogamy is transfer of male gamete to the female gamete with the help of pollen tube.
According to these definitions it feels to me that fertilisation is process in which male and female gametes interact and fuse to form zygote.
Now problem is that it didn't make any sense to me that we are saying siphonogamy is a type of fertilisation in seed plants as siphonogamy seems something different from fertilisation.
Can you please tell me why siphonogamy is considered to be a part of fertilisation but not a different process.
 

Attachments

Answers and Replies

  • #2
BillTre
Science Advisor
Gold Member
1,462
3,169
The process of fertilization involves the transfer of one of two parents haploid genomes into the cell of another.
This occurs in both animal fertilization and pollenation.
The process of how the transfer is achieved is what differs with siphonogamy. This is a a functional different in a detail of the overall fertilization process. In the larger view (of combining haploid genomes), the processes are the same.

Now I am wondering what it is called in fungi.
 
  • Like
Likes Hemant
  • #3
219
28
The process of fertilization involves the transfer of one of two parents haploid genomes into the cell of another.
This occurs in both animal fertilization and pollenation.
So can we that insemination in humans is a part of fertilisation.
 
  • #4
BillTre
Science Advisor
Gold Member
1,462
3,169
So can we that insemination in humans is a part of fertilisation.
It would be the process of getting the sperm in to vicinity of the egg(s) so that they can fertilize.
The siphonogamy is the process of the plant equivalent of sperm (pollen) growing out a cell process that actually gets to the plant equivalent of an egg and then actually transferring its haploid genome to the ova.
 
  • Like
Likes Hemant
  • #5
219
28
It would be the process of getting the sperm in to vicinity of the egg(s) so that they can fertilize.
The siphonogamy is the process of the plant equivalent of sperm (pollen) growing out a cell process that actually gets to the plant equivalent of an egg and then actually transferring its haploid genome to the ova.
I got it,
If we consider the definition of fertilisation given by you then it makes sense and this definition seems to be very appropriate to me.
Thanks.
 
  • Like
Likes BillTre
  • #6
219
28
I think I have misinterpreted what you have written,it is not definition of fertilisation that solved my problem as it is same.
Please correct me if I am wrong.
I understood that in siphonogamy transfer of genome to another gamete is done differently and siphonogamy also involves the process after entry into micropylar region of embryosac and not only entry into micropylar region of embryosac.
 
  • #7
BillTre
Science Advisor
Gold Member
1,462
3,169
My understanding is that siphonogamy involves both getting the sperm equivalent (pollen) to the location where the female gamete is, as well as transferring its DNA into the female gamete.

Animal fertilization involves the transfer of the DNA into the female gamete. However, getting the sperm to the location of the female gamete involves the insemination process (for internally fertilized animals (such as mammals, birds, some fish, insects)). Externally fertilized animals (like many fish and frogs) release males gametes outside of the female animal in coordination with female gamete release, however this has to be done at the appropriate time and situation.
 
  • Like
Likes Hemant
  • #8
219
28
My understanding is that siphonogamy involves both getting the sperm equivalent (pollen) to the location where the female gamete is, as well as transferring its DNA into the female gamete.
Can I also know why process of transferring gamete to embryosac is not considered to be different than transferring genome.
 

Related Threads on Why siphonogamy is considered to be fertilisation?

Replies
13
Views
8K
Replies
12
Views
5K
Replies
103
Views
38K
Replies
8
Views
2K
  • Last Post
Replies
15
Views
32K
Replies
4
Views
897
Replies
3
Views
1K
Replies
2
Views
2K
Replies
3
Views
2K
Top