Paper · 2019 · Plant Biotechnology Journal

Mutations in MIR396e and MIR396f increase grain size and modulate shoot architecture in rice

Chunbo Miao; Dong Wang; Reqing He; et al.

6
claims
12
verbatim quotes
134
citations
4
research areas
✓
Open access · cc-by

Abstract

Grain size and plant architecture are critical factors determining crop productivity. Here, we performed gene editing of the MIR396 gene family in rice and found that MIR396e and MIR396f are two important regulators of grain size and plant architecture. mir396ef mutations can increase grain yield by increasing grain size. In addition, mir396ef mutations resulted in an altered plant architecture, with lengthened leaves but shortened internodes, especially the uppermost internode. Our research suggests that mir396ef mutations promote leaf elongation by increasing the level of a gibberellin (GA) precursor, mevalonic acid, which subsequently promotes GA biosynthesis. However, internode elongation in mir396ef mutants appears to be suppressed via reduced CYP96B4 expression but not via the GA pathway. This research provides candidate gene-editing targets to breed elite rice varieties.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

mir396ef mutations can increase grain yield in rice by increasing grain size.

Organ / stage
graine1
Treatment
mir396ef mutationse1
Gene
MIR396e and MIR396fe5
Outcome
grain yielde1
Direction
increasee1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“we performed gene editing of the MIR396 gene family in rice”

✓ located verbatim in the source · abstract, characters 92–151 · show in text ↑
e1

“mir396ef mutations can increase grain yield by increasing grain size”

✓ located verbatim in the source · abstract, characters 254–322 · show in text ↑
e5

“MIR396e and MIR396f are two important regulators of grain size and plant architecture”

✓ located verbatim in the source · abstract, characters 167–252 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

mir396ef mutations lengthen leaves in rice.

Treatment
mir396ef mutationse2
Outcome
leavese2
Direction
lengthenede2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“we performed gene editing of the MIR396 gene family in rice”

✓ located verbatim in the source · abstract, characters 92–151 · show in text ↑
e2

“mir396ef mutations resulted in an altered plant architecture, with lengthened leaves but shortened internodes, especially the uppermost internode”

✓ located verbatim in the source · abstract, characters 337–482 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

mir396ef mutations shorten internodes in rice, especially the uppermost internode.

Organ / stage
uppermost internodee2
Treatment
mir396ef mutationse2
Outcome
internodese2
Direction
shortenede2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“we performed gene editing of the MIR396 gene family in rice”

✓ located verbatim in the source · abstract, characters 92–151 · show in text ↑
e2

“mir396ef mutations resulted in an altered plant architecture, with lengthened leaves but shortened internodes, especially the uppermost internode”

✓ located verbatim in the source · abstract, characters 337–482 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

mir396ef mutations are suggested to promote leaf elongation by raising mevalonic acid, a gibberellin precursor, which promotes GA biosynthesis in rice.

Treatment
mir396ef mutationse3
Compound
mevalonic acide3
Outcome
leaf elongatione3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“we performed gene editing of the MIR396 gene family in rice”

✓ located verbatim in the source · abstract, characters 92–151 · show in text ↑
e3

“mir396ef mutations promote leaf elongation by increasing the level of a gibberellin (GA) precursor, mevalonic acid, which subsequently promotes GA biosynthesis”

✓ located verbatim in the source · abstract, characters 511–670 · show in text ↑
Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

Internode elongation in mir396ef mutants appears to be suppressed via reduced CYP96B4 expression in rice, but not via the GA pathway.

Material
mir396ef mutantse4
Gene
CYP96B4e4
Outcome
internode elongatione4
Qualifier
but not via the GA pathwaye4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“we performed gene editing of the MIR396 gene family in rice”

✓ located verbatim in the source · abstract, characters 92–151 · show in text ↑
e4

“internode elongation in mir396ef mutants appears to be suppressed via reduced CYP96B4 expression but not via the GA pathway”

✓ located verbatim in the source · abstract, characters 681–804 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend the candidate gene-editing targets of MIR396ef for breeding elite rice varieties.

Outcome
candidate gene-editing targetse6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e6

“This research provides candidate gene-editing targets to breed elite rice varieties”

✓ located verbatim in the source · abstract, characters 806–889 · show in text ↑

loss of function · yield · Oryza sativa (rice)Positive and negative results

134 papers: 62 positive, 72 negative or no effect

61 papers in the same direction as this paper · 72 in the opposite direction

  1. positive
  2. positive
  3. negative

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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.