SEA-PHAGES Logo

The official website of the HHMI Science Education Alliance-Phage Hunters Advancing Genomics and Evolutionary Science program.

Welcome to the forums at seaphages.org. Please feel free to ask any questions related to the SEA-PHAGES program. Any logged-in user may post new topics and reply to existing topics. If you'd like to see a new forum created, please contact us using our form or email us at info@seaphages.org.

Sub-culturing from PyCa Broth

| posted today, 15:55
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.
| posted today, 17:03
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
| posted today, 18:04
viknesh
jayadasgupta
Hello everyone,
I have been getting broth cultures ready from agar plates (isolated colonies). I was wondering if it is ok to subculture the broth Arthrobacter for next day's experiments? Meaning, take 1ml of the overnight broth and add to 50ml fresh broth for next day's lab? Or is that a no-no? And that we should start from the plate every time?.

Thank you,
Jaya.

The recommendation is to minimize the number of passages, as each passage increases the genetic variation in the population and possibly phenotypes important for infection. For a reliable culture, we recommend always starting a culture from a colonies off a freshly streaked plate. In a pinch, you can subculture from an existing culture, but I would do this regularly.
Thank you, Vic.
 
Login to post a reply.