To protect stem cells, plants have diverse genetic backup plans

phys.org | 4/2/2019 | Staff
idkwatitis (Posted by) Level 3
Click For Photo: https://3c1703fe8d.site.internapcdn.net/newman/gfx/news/hires/2019/toprotectste.jpg

Despite evolution driving a wide variety of differences, many plants function the same way. Now a new study has revealed the different genetic strategies various flowering plant species use to achieve the same status quo.

In flowering plants, stem cells are critical for survival. Influenced by environmental factors, stem cells direct how and when a plant will grow. Whether a plant needs deep-reaching roots, taller stems, or more leaves and flowers, it is the stem cells that produce new cells for the job.

Stem - Cells - Plant - Growth

That's also why having too many or too few stem cells can disrupt a plant's growth.

Responsible for all this is a "core genetic circuitry found in all flowering plants," says CSHL Professor and HHMI Investigator Zach Lippman.

Paper - Nature - Genetics - Lippman - CSHL

In a paper published in Nature Genetics, Lippman and CSHL Professor David Jackson describe the genetic mechanisms that ensure "a deeply conserved stem cell circuit" maintains some function, even if defects occur in a signaling protein called CLV3, and the receptor with which it interacts, CLV1.

"Those players are critical for ensuring a plant has the right number of stem cells throughout life, and we discovered there are backup systems that kick in when these players are compromised through chance mutations," explains Lippman.

Researchers - Stem - Cell - Circuits - Plants

The researchers determined that although the stem cell circuits are essential for flowering plants, the genetic backup...
(Excerpt) Read more at: phys.org
Wake Up To Breaking News!
Sign In or Register to comment.

Welcome to Long Room!

Where The World Finds Its News!