CRISPR/Cas9-based genome editing and functional analysis of SlHyPRP1 and SlDEA1 genes of Solanum lycopersicum L. in imparting genetic tolerance to multiple stress factors
CRISPR/Cas is a breakthrough genome editing system because of its precision, target specificity, and efficiency. As a speed breeding system, it is more robust than the conventional breeding and biotechnological approaches for qualitative and quantitative trait improvement. Tomato ( L.) is an economi...
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Published in | Frontiers in plant science Vol. 15; p. 1304381 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
Frontiers Media S.A
2024
|
Subjects | |
Online Access | Get full text |
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Summary: | CRISPR/Cas is a breakthrough genome editing system because of its precision, target specificity, and efficiency. As a speed breeding system, it is more robust than the conventional breeding and biotechnological approaches for qualitative and quantitative trait improvement. Tomato (
L.) is an economically important crop, but its yield and productivity have been severely impacted due to different abiotic and biotic stresses. The recently identified
and
are two potential negative regulatory genes in response to different abiotic (drought and salinity) and biotic stress (bacterial leaf spot and bacterial wilt) conditions in
L. The present study aimed to evaluate the drought, salinity, bacterial leaf spot, and bacterial wilt tolerance response in
L. crop through CRISPR/Cas9 genome editing of
and
and their functional analysis. The transient single- and dual-gene
and
CRISPR-edited plants were phenotypically better responsive to multiple stress factors taken under the study. The CRISPR-edited
and
plants showed a higher level of chlorophyll and proline content compared to wild-type (WT) plants under abiotic stress conditions. Reactive oxygen species accumulation and the cell death count per total area of leaves and roots under biotic stress were less in CRISPR-edited
and
plants compared to WT plants. The study reveals that the combined loss-of-function of
along with
is essential for imparting significant multi-stress tolerance (drought, salinity, bacterial leaf spot, and bacterial wilt) in
L. The main feature of the study is the detailed genetic characterization of
, a poorly studied 8CM family gene in multi-stress tolerance, through the CRISPR/Cas9 gene editing system. The study revealed the key negative regulatory role of
that function together as an anchor gene with
in imparting multi-stress tolerance in
L. It was interesting that the present study also showed that transient CRISPR/Cas9 editing events of
and
genes were successfully replicated in stably generated parent-genome-edited line (GEd0) and genome-edited first-generation lines (GEd1) of
L. With these upshots, the study's key findings demonstrate outstanding value in developing sustainable multi-stress tolerance in
L. and other crops to cope with climate change. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1664-462X 1664-462X |
DOI: | 10.3389/fpls.2024.1304381 |