Abstract
Cassava storage roots are an important source of food, feed, and material for starch-based industries in many countries. After harvest, rapid post-harvest physiological deterioration (PPD) reduces their palatability and marketability. During the PPD process, vascular streaking occurs through over-accumulation of coumarins, the biosynthesis of which involves the key enzyme p-coumaroyl shikimate/quinate 3′-hydroxylase (C3′H). Repression of MeC3′H expression by RNA interference in transgenic cassava plants caused a significant delay in PPD by decreasing scopoletin and scopolin accumulation in field-harvested storage roots. This study demonstrates that MeC3′H is the key enzyme participating in coumarin biosynthesis during PPD and shows that MeC3′H is a useful target gene for editing to prolong the shelf life of cassava storage roots.
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Claims 4
Claim · model-written summary
RNA interference against MeC3′H significantly delayed post-harvest physiological deterioration in transgenic cassava.
- Taxon
- cassava
Manihot esculentae0 - Treatment
- RNA interferencee0
- Outcome
- PPDe0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by RNA interference in transgenic cassava plants caused a significant delay in PPD”
Claim · model-written summary
RNA interference against MeC3′H decreased scopoletin and scopolin accumulation in field-harvested cassava storage roots.
- Taxon
- CassavaManihot esculentat0
- Organ / stage
- storage rootse1
- Treatment
- RNA interferencee0
- Outcome
- scopoletin and scopolin accumulatione1
- Direction
- decreasinge1
- Setting
- field-harvestede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cassava Storage Roots”
e0“by RNA interference in transgenic cassava plants caused a significant delay in PPD”
e1“by decreasing scopoletin and scopolin accumulation in field-harvested storage roots”
Claim · model-written summary
MeC3′H is the key enzyme participating in coumarin biosynthesis during PPD in cassava.
- Taxon
- cassavaManihot esculentat0
- Gene
- MeC3′He2
- Outcome
- coumarin biosynthesise2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cassava Storage Roots”
e2“This study demonstrates that MeC3′H is the key enzyme participating in coumarin biosynthesis during PPD”
Claim · model-written summary
MeC3′H is a useful target gene for editing to prolong the shelf life of cassava storage roots.
- Taxon
- cassavaManihot esculentae3
- Treatment
- editinge3
- Gene
- MeC3′He3
- Outcome
- shelf lifee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cassava Storage Roots”
e3“MeC3′H is a useful target gene for editing to prolong the shelf life of cassava storage roots”
The same questions in other papers
loss of function · molecular: metabolites · Manihot esculenta (cassava)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.