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Title: An Agrobacterium ‐mediated stable transformation technique for the hornwort model Anthoceros agrestis
Summary

Despite their key phylogenetic position and their unique biology, hornworts have been widely overlooked. Until recently there was no hornwort model species amenable to systematic experimental investigation.Anthoceros agrestishas been proposed as the model species to study hornwort biology.

We have developed anAgrobacterium‐mediated method for the stable transformation ofA. agrestis, a hornwort model species for which a genetic manipulation technique was not yet available.

High transformation efficiency was achieved by using thallus tissue grown under low light conditions. We generated a total of 274 transgenicA. agrestislines expressing the β‐glucuronidase (GUS), cyan, green, and yellow fluorescent proteins under control of the CaMV 35S promoter and several endogenous promoters. Nuclear and plasma membrane localization with multiple color fluorescent proteins was also confirmed.

The transformation technique described here should pave the way for detailed molecular and genetic studies of hornwort biology, providing much needed insight into the molecular mechanisms underlying symbiosis, carbon‐concentrating mechanism, RNA editing and land plant evolution in general.

 
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Award ID(s):
1923011 1831428
NSF-PAR ID:
10446971
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley-Blackwell
Date Published:
Journal Name:
New Phytologist
Volume:
232
Issue:
3
ISSN:
0028-646X
Page Range / eLocation ID:
p. 1488-1505
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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