In:
Frontiers in Plant Science, Frontiers Media SA, Vol. 12 ( 2022-1-18)
Abstract:
Cleomaceae is closely related to Brassicaceae and includes C 3 , C 3 –C 4 , and C 4 species. Thus, this family represents an interesting system for studying the evolution of the carbon concentrating mechanism. However, inadequate genetic information on Cleomaceae limits their research applications. Here, we characterized 22 Cleomaceae accessions [3 genera ( Cleoserrata , Gynandropsis , and Tarenaya ) and 11 species] in terms of genome size; molecular phylogeny; as well as anatomical, biochemical, and photosynthetic traits. We clustered the species into seven groups based on genome size. Interestingly, despite clear differences in genome size (2C, ranging from 0.55 to 1.3 pg) in Tarenaya spp., this variation was not consistent with phylogenetic grouping based on the internal transcribed spacer (ITS) marker, suggesting the occurrence of multiple polyploidy events within this genus. Moreover, only G. gynandra , which possesses a large nuclear genome, exhibited the C 4 metabolism. Among the C 3 -like species, we observed intra- and interspecific variation in nuclear genome size as well as in biochemical, physiological, and anatomical traits. Furthermore, the C 3 -like species had increased venation density and bundle sheath cell size, compared to C 4 species, which likely predisposed the former lineages to C 4 photosynthesis. Accordingly, our findings demonstrate the potential of Cleomaceae, mainly members of Tarenaya , in offering novel insights into the evolution of C 4 photosynthesis.
Type of Medium:
Online Resource
ISSN:
1664-462X
DOI:
10.3389/fpls.2021.756505
DOI:
10.3389/fpls.2021.756505.s001
DOI:
10.3389/fpls.2021.756505.s002
DOI:
10.3389/fpls.2021.756505.s003
DOI:
10.3389/fpls.2021.756505.s004
DOI:
10.3389/fpls.2021.756505.s005
DOI:
10.3389/fpls.2021.756505.s006
DOI:
10.3389/fpls.2021.756505.s007
DOI:
10.3389/fpls.2021.756505.s008
DOI:
10.3389/fpls.2021.756505.s009
DOI:
10.3389/fpls.2021.756505.s010
DOI:
10.3389/fpls.2021.756505.s011
DOI:
10.3389/fpls.2021.756505.s012
DOI:
10.3389/fpls.2021.756505.s013
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2022
detail.hit.zdb_id:
2687947-5
detail.hit.zdb_id:
2613694-6
Permalink