Novel allele elh of the UBP14 gene affects plant organ size via cell expansion in Arabidopsis thaliana
Plant organ size control is an essential process of plant growth and development. The regulation of plant organ size involves a complicated network of genetic, molecular interactions, as well as the interplay of environmental factors. Here, we report a temperature-sensitive hypocotyl elongation EMS-...
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Published in | microPublication biology Vol. 2021 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Caltech Library
01.06.2021
|
Subjects | |
Online Access | Get full text |
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Summary: | Plant organ size control is an essential process of plant growth and development. The regulation of plant organ size involves a complicated network of genetic, molecular interactions, as well as the interplay of environmental factors. Here, we report a temperature-sensitive hypocotyl elongation EMS-generated mutant, hereby referred to as
elongated hypocotyl under high-temperature
(
elh
)
.
The elongated hypocotyl phenotype was prominent when the
elh
seedlings were grown at high temperature, 28
°
C, but not under the growth temperature of 21
°
C. We observed significantly larger organ sizes in
elh
plants, including cotyledons, petals and seeds. In
elh
plants, the cell sizes in cotyledons and petals were significantly larger than wild type. By measuring the cell density and organ area of cotyledons, petals and mature dissected embryos, we found no differences in total cell numbers in any organ indicating that cell expansion rather than cell proliferation was perturbed in
elh
.
elh
plants produced leaves at a slower rate than wild type plants, suggesting that perturbing the balance between cell division and cell expansion is linked to the developmental rate at which leaves are produced. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 PN: Formal analysis, Writing - original draft, Writing - review and editing, Visualization LS: Writing - review and editing, Investigation RD: Investigation, Visualization, Writing - review and editing IS: Conceptualization, Investigation, Writing - original draft, Writing - review and editing, Visualization, Funding acquisition, Project administration, Supervision |
ISSN: | 2578-9430 |
DOI: | 10.17912/micropub.biology.000401 |